SFO - LHR

£353 Find Cheap Flights from San Francisco to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Heathrow departing on 31/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to London, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£672
Typical prices: £645-£451
British Airways
Sat 12/9Sat 26/9
SFO - LHR • Direct
Cheapest one-way flight
£353
Typical prices: £299-£407
Multiple Airlines
Fri 31/7
SFO - LHR • 2 stops
Advice from real travellers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
BA premium economy adds 18 cm legroom; Virgin Economy Delight adds space too.
United Wi-Fi has free messaging; Lufthansa Premium Economy adds a checked bag.
Expert advice
Expert advice
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Expert advice
Expert advice
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Top airlines
Cheapest • from £672 (return)
Best reviews • 7.8 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with British Airways, United Airlines, and Virgin Atlantic. Average duration is 10h 22m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 92% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £434 (return)
Shortest trip • 13h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
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Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Francisco to Heathrow (SFO-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Francisco to Heathrow

Sat, 12 Sep - Sat, 26 Sep
British Airways Logo
16:35 - 11:00
SFO
-
LHR
10h 25mdirect
British Airways Logo
10:45 - 13:50
LHR
-
SFO
11h 05mdirect
£672British Airways
Thu, 3 Sep - Mon, 7 Sep
Aer Lingus Logo
17:35 - 15:00
SFO
-
LHR
13h 25m
1 stop
Aer Lingus Logo
09:50 - 15:50
LHR
-
SFO
14h 00m
1 stop
£674Aer Lingus
Fri, 4 Sep - Sun, 13 Sep
Scandinavian Airlines Logo
16:45 - 09:35
SFO
-
LHR
32h 50m
2 stops
Scandinavian Airlines Logo
10:20 - 14:40
LHR
-
SFO
36h 20m
1 stop
£675Scandinavian Airlines
Fri, 14 Aug - Sat, 22 Aug
Scandinavian Airlines Logo
23:50 - 09:20
SFO
-
LHR
49h 30m
2 stops
Scandinavian Airlines Logo
06:40 - 14:40
LHR
-
SFO
16h 00m
1 stop
£675Scandinavian Airlines
Tue, 8 Sep - Mon, 14 Sep
SWISS Logo
19:35 - 17:50
SFO
-
LHR
14h 15m
1 stop
SWISS Logo
14:25 - 16:15
LHR
-
SFO
33h 50m
2 stops
£676SWISS
Sun, 30 Aug - Thu, 10 Sep
Alaska Airlines Logo
15:43 - 15:05
SFO
-
LHR
15h 22m
1 stop
Alaska Airlines Logo
17:00 - 23:40
LHR
-
SFO
14h 40m
1 stop
£677Alaska Airlines
Wed, 16 Sep - Sun, 27 Sep
Scandinavian Airlines Logo
07:00 - 09:20
SFO
-
LHR
18h 20m
2 stops
Scandinavian Airlines Logo
19:50 - 14:40
LHR
-
SFO
26h 50m
2 stops
£678Scandinavian Airlines
Tue, 18 Aug - Mon, 31 Aug
SWISS Logo
13:05 - 07:25
SFO
-
LHR
10h 20mdirect
SWISS Logo
10:35 - 13:35
LHR
-
SFO
11h 00mdirect
£678SWISS
Fri, 11 Sep - Tue, 22 Sep
British Airways Logo
16:35 - 11:00
SFO
-
LHR
10h 25mdirect
British Airways Logo
14:30 - 17:40
LHR
-
SFO
11h 10mdirect
£679British Airways
Sat, 12 Sep - Sat, 19 Sep
United Airlines Logo
16:45 - 11:10
SFO
-
LHR
10h 25mdirect
United Airlines Logo
07:25 - 14:30
LHR
-
SFO
15h 05m
1 stop
£680United Airlines
Booking Insights

KAYAK’s insights & trends for San Francisco to Heathrow flights

Get data-powered insights and trends into flights from San Francisco to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from San Francisco to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to London Heathrow Airport departing in September.

What’s the cheapest day of the week to fly from San Francisco to London Heathrow Airport?

The average price of all round-trip flights from San Francisco to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Wednesday and more expensive on a Tuesday. On your return trip to San Francisco, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

What is the cheapest month to fly from San Francisco to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to London Heathrow Airport is February, where tickets cost £483 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is £922 and £728 respectively.

Can I save money by flying with a stopover from San Francisco to London Heathrow Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £946, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from San Francisco to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from San Francisco to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Blane Bachelor

Blane Bachelor

Expert on KLM and SFO

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Kirstie Pickering

Kirstie Pickering

Expert on LHR

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Good to know - Cheap tickets from San Francisco to London Heathrow Airport

Low seasonJanuary
Cheapest flight£353
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (13% more expensive on average)
Flight from San Francisco to London Heathrow Airport

When to book flights from San Francisco to Heathrow

Are your dates flexible? Find out the best times to travel from San Francisco to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from San Francisco to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from San Francisco to Heathrow 
Verified travelerFlew with British Airways
SFO
-
LHR
Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia
SFO
-
LHR
Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic
SFO
-
LHR
Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines
SFO
-
LHR
Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
PallaviFlew with British Airways
SFO
-
LHR
Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
TapanFlew with British Airways
SFO
-
LHR
Oct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.

FAQs for booking San Francisco to London Heathrow Airport flights

  • Are there nonstop flights from San Francisco to Heathrow Airport?

    It is possible to fly directly into London from San Francisco. American Airlines and British Airways offer direct London flight deals, making the two airlines highly sought after by business travelers. However, you’ll have to add a few dollars for a ticket. Other airlines, such as Lufthansa, Aer Lingus, KLM, and Finnair have one-stop flights with one or multiple layovers in Frankfurt, Munich, Dublin, Amsterdam, and Helsinki.

  • Where can I find car rental companies at Heathrow Airport?

    If you prefer driving to your hotel or the city center from Heathrow Airport, you can rent a car from the car rental agencies located at every terminal's arrival concourses. You can rent a vehicle from some renowned companies, such as National, Avis, Europcar, Alamo, Enterprise Rent-A-Car, and Budget.

  • How can I get to London City from Heathrow Airport?

    You can access London city from Heathrow Airport by bus. The National Express buses depart the Heathrow Central Station, nestled between Terminals 2 and 3, every 15min. The journey takes about 50min. You can also take the Heathrow Express Trains that connect to Paddington Station in London. Fares cost around £15.87 ($22) - £18.04 ($25). Otherwise, take the typical black taxis, Minicabit, or cabs, which might charge about £2.89 ($4) - £5.05 ($7). You can also book a Heathrow Shuttle Transfer to your hotel or city center, although these have several stops.

  • Where are the airport lounges at San Francisco Airport?

    There are about seven lounges at San Francisco Airport (SFO) where you can relax and enjoy VIP services before your Heathrow (LHR) flight. They include the Air France-KLM Lounge (International Terminal A), American Airlines Admirals Club (Terminal 1), The Centurion Lounge (Terminal 3), Delta Sky Club (Terminal 2), Japan Airlines Sakura Lounge (Terminal A, immediately next to Gate A1), and others.

  • What is the cheapest flight from San Francisco to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from San Francisco to London Heathrow Airport was £353 for a one-way ticket and £672 for a return.

  • Which airports will I be using when flying from San Francisco to London Heathrow Airport?

    San Francisco and London Heathrow Airport are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at London Heathrow.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to London Heathrow Airport?

    KLM, and American Airlines offer inflight Wi-Fi service on the San Francisco to London Heathrow Airport flight route.

  • Which aircraft models fly most regularly from San Francisco to London Heathrow Airport?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the San Francisco to London Heathrow Airport flight route.

  • Which airline alliances offer flights from San Francisco to London Heathrow Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between San Francisco and London Heathrow Airport, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from San Francisco to London Heathrow Airport?

    There are direct flights from San Francisco to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from San Francisco to London, KLM or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from San Francisco to London are KLM and Virgin Atlantic. With an average price for the route of £708 and an overall rating of 7.8, KLM is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £541 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from San Francisco to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from San Francisco is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to San Francisco? 25% of our users found flights on this route for £376 or less one-way and £812 or less round-trip.
  • Are you traveling for business? San Francisco Airport (SFO) offers business-centric services to make your trip as productive and convenient as possible. There is a Business Center in the International Terminal Main Building with free Wi-Fi, charging outlets, fax and copying solutions.
  • Flight boarding and cargo handling can be more convenient if you're at the right terminal. If you booked a Virgin Atlantic or British Airways ticket from San Francisco Airport (SFO), it would be best to check-in at the International Terminal. However, American Airlines depart from Terminal 2.
  • Do you have a lot of baggage and require inter-terminal transport at London-Heathrow Airport (LHR)? There are bus shuttles that transfer passengers from the arrival terminals to the Main Arrival Hall. You can also take the underground train, but you'll have to purchase a ticket at the terminal station.
  • Families will relish flying from San Francisco Airport (SFO) because it has many family-friendly amenities. The airport provides baggage assistance, nursing rooms, and children's play areas in Terminals 1, 2, and 3.
  • Travelers driving to the airport can find plenty of parking spaces within the San Francisco hub. You can park at the International Garage A or G. These charge about $2 per 15min, with a daily maximum of around $36. There's also a long-term parking lot with a daily maximum of about $18.

Prefer to fly direct from San Francisco to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Francisco to London Heathrow.
Find which airlines fly direct from San Francisco Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

San Francisco to London Heathrow

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

Direct returns

London Heathrow to San Francisco

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

Reviews of the top 5 airlines flying from San Francisco to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1526 reviews
7.2Entertainment
7.7Comfort
7.8Boarding
8.4Crew
7.3Food
Airline reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

10.0 ExcellentBob, May 2026
MAD - AMS
Read more KLM reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Empty seats next to me - wish it had been for a longer flight!!

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Some crew were unfriendly or in some cases just straight up rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Flights were delayed and due to a checked hand luggage bag by an overzealous gate agent in Berlin I missed my ground connection costing me another £80. Food was cold and bland, I honestly expect better from a national carrier operating out of one of their major hubs.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Wish the food and overall service was better. They treat Business class passengers same as economy

They had us seating down for one hour just waiting on the plane

Everything you need to know for your flight from San Francisco to Heathrow

Information on your arrival and departure airports