£254 Find Cheap Flights from London Heathrow Airport to Fremont

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Fremont departing on 18/5. 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.
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Cheap Flight Deals from Heathrow to Fremont (LHR-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Fremont 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.

Recent return flight deals from Heathrow to Fremont

KAYAK's recommended return flight deals from the most popular airlines that fly from Heathrow to Fremont.
Discover the best prices for you by selecting your travel dates on KAYAK.
SWISS Logo
08:45 - 16:10LHR-SFO
15h 25m1 stop
SWISS Logo
19:30 - 07:55SFO-LHR
28h 25m1 stop
£384SWISS
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Sat, 10 May - Sat, 17 May
TAP AIR PORTUGAL Logo
18:45 - 13:35LHR-SFO
26h 50m1 stop
TAP AIR PORTUGAL Logo
16:20 - 22:55SFO-LHR
22h 35m1 stop
£390TAP AIR PORTUGAL
Find Deal
Mon, 6 Oct - Mon, 13 Oct
Lufthansa Logo
09:00 - 19:00LHR-SFO
18h 00m1 stop
Lufthansa Logo
15:55 - 10:25SFO-LHR
10h 30mdirect
£403Lufthansa
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Sat, 10 May - Sat, 17 May
Lufthansa Logo
08:40 - 16:10LHR-SFO
15h 30m1 stop
Lufthansa Logo
06:30 - 08:20SFO-LHR
17h 50m1 stop
£405Lufthansa
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Wed, 10 Sep - Wed, 17 Sep
United Airlines Logo
09:00 - 19:00LHR-SFO
18h 00m1 stop
United Airlines Logo
11:50 - 06:30SFO-LHR
34h 40m1 stop
£412United Airlines
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Sat, 6 Sep - Mon, 15 Sep
United Airlines Logo
06:30 - 12:40LHR-SFO
14h 10m1 stop
United Airlines Logo
14:25 - 11:10SFO-LHR
12h 45m1 stop
£415United Airlines
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Fri, 9 May - Fri, 23 May
Virgin Atlantic Logo
16:25 - 19:30LHR-SFO
11h 05mdirect
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
£421Virgin Atlantic
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Sun, 11 May - Tue, 20 May
British Airways Logo
14:15 - 17:15LHR-SFO
11h 00mdirect
British Airways Logo
16:20 - 10:55SFO-LHR
10h 35mdirect
£427British Airways
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Fri, 9 May - Fri, 23 May
British Airways Logo
10:45 - 13:50LHR-SFO
11h 05mdirect
British Airways Logo
19:30 - 13:55SFO-LHR
10h 25mdirect
£436British Airways
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Mon, 12 May - Mon, 19 May
Virgin Atlantic Logo
11:15 - 14:15LHR-SFO
11h 00mdirect
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
£456Virgin Atlantic
Find Deal
Tue, 9 Sep - Mon, 15 Sep
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Good to know - Cheap tickets from London Heathrow Airport to Fremont

Low season

January

High season

July

Cheapest flight

£254
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (36% more expensive on average)
Flight from London Heathrow Airport to San Francisco

When to book flights from Heathrow to Fremont

Are your dates flexible? Find out the best times to travel from Heathrow to Fremont based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

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

Insights shared by verified travellers who flew the route from Heathrow to Fremont 
AlastairFlew with British AirwaysLHR-SFOFeb 2025
Make sure your free checked luggage is for outward and return flights.
Verified travelerFlew with American AirlinesLHR-SFOMar 2024
Heathrow is vast, allow plenty of time to drop bags and go through security. At San Francisco the immigration takes a bit of time and we had to wait around 1.5hrs, bare this in mind when booking car rental. The is a shuttle train from the airport to the car rental area which is very slick and efficient.
Ana-MariaFlew with IberiaLHR-SFOMar 2024
In London triple check your flight they have multiple leaving for the same destination once - it is easy to get them confused

FAQs for booking flights from London to Fremont

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

    When flying out of London Heathrow Airport you’ll be using London Heathrow. Fremont does not have its own airport so you’ll be flying into nearby San Francisco airport, which is 21.9 mi away.

  • How long does a flight from London Heathrow Airport to Fremont take?

    Direct flights cover the 5,350 miles separating London Heathrow Airport and Fremont in about 10h 55m.

  • How many flights are there between London Heathrow Airport and Fremont?

    42 direct flights run between London Heathrow Airport and Fremont on a daily basis. On average, there are about 294 departures each week.

  • What’s the cheapest day of the week to fly between London Heathrow Airport and Fremont?

    Consider leaving on a Saturday and avoid Tuesdays if you're looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Mondays and the most expensive ones on Saturdays.

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

    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 London Heathrow Airport to Fremont.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fremont from London Heathrow Airport 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 London Heathrow Airport to Fremont?

    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 Fremont with an airline and back to London Heathrow Airport with another airline.

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

    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 Fremont from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from London Heathrow Airport to Fremont?

    In the last 72 hours, the cheapest one-way ticket between London Heathrow Airport and Fremont found on KAYAK was with TAP AIR PORTUGAL for £274. SWISS offered a return connection from £384 and TAP AIR PORTUGAL from £390.

Top tips for finding cheap flights from London Heathrow Airport to Fremont

  • There is no airport in Fremont. Instead, you’ll be flying into San Francisco Airport when flying between London Heathrow Airport and Fremont.
  • The cheapest flight from London to Fremont was found 83 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be June, July and August. The cheapest month to fly is February.

Top 5 airlines serving Heathrow to Fremont

Need help choosing which airline to fly with from Heathrow to Fremont? 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.
7.5
Austrian AirlinesOverall score based on 780 reviews
8.1Crew
6.7Food
7.6Boarding
7.3Comfort
6.7Entertainment
Airline reviews

Not so good. I paid for a preference economic seat, and I couldn’t incline it back because it was blocked. They explained me that because is the last before emergency exit. The company new that but it was not explained in the seat selection

8.0 ExcellentMichael, Apr 2025TLV - VIE
Read more Austrian Airlines reviews

Not so good. I paid for a preference economic seat, and I couldn’t incline it back because it was blocked. They explained me that because is the last before emergency exit. The company new that but it was not explained in the seat selection

It was on time. Snacks could have been provided for free.

Tirana was crazy check in and getting bussed to another gate. Both Germany stops were intensive customs but organized, but that wasn't the airlines problem. The crews were fabulous on the planes. The announcements were not easy to understand in English, slurred speech. Customs inthe US were fast. We waited for luggage, three later arriving planes had their luggage and left before us

Business class old style from 10 years ago. Ok for short flights but nor for 12 hours journey. The passenger near the window have to jump over the passenger seat aisle side or wake him up to upright the seat. That’s not the business class that you expect on long night flight. Seats are not so confortable. And believe it or not no wifi!

Friendly staff, always good food , as comfortable as it can be in economy

Business class is not worth it. Not comfortable and old plane with no privacy or enough space unless you on the single seats

We didn’t fly into Neuark , because it departed without us . We ran to a closed gate , and no staff to assist, then to a customer service center that was also closed, then briskly walked (20mins) to another customer center and got a ticket , waited 2 hours , got a flight to JFK instead, because of the time delay we Ran to catch our train home , and again our luggage arrived 3 days later delivery time at 3:45 in the MORNING!!!! Crazy!!!!!! Took a few days to shake off this disappointment of your service. You’re an embarrassment to customer service .

A bellow average experience. A delayed flight , no staff to assist , running and panic to connecting flight , 2 hour wait for customer service. No luggage when we arrived , luggage delivered 3 days after at 3:45 AM !!!! Much stress and anxiety from this experience. Please repair your Brand .

My luggage was lost and I did not receive any compensation

The option to check in the carry on bag for free was very convenient. If one checked bag could be included in the ticket price that would be even better.

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.

We’ve used VA before many times the experience is always been good they have lovely staff and the food is always delicious.

Everything about the flight was amazing from check in to boarding entertainment was okay food we didn’t try.

Seats were old and dirty, for a long haul flight you expect to be able to recline and for the av to work properly. Choice for vegans was fruit….

The Virgin Atlantic crew was very good. However, the equipment was OK, the seats were OK, but her bags did not arrive with me. Two bags showed up a day later and I’m still waiting for my third back.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

The flight was delayed by an hour. Made the connection uncomfortably tight.

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Terrible experience. Should be a short simple flight from San Francisco to Palm Springs. Disgusting insult that United Air doesn’t have a cabin crew ready to receive a plane that’s already an hour plus late in departure. Lots of misinformation along the way from cockpit and crew. Definitely unimpressed with both union and management.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

This was the best carrier, comfort, service, good food, on time experience on a long haul flight. New, clean, quiet, smooth aircraft!!!

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

Everything you need to know for your flight from Heathrow to Fremont

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