£255 Find Cheap Flights from London Heathrow Airport to Fremont

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Fremont departing on 25/8. 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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1 adult, Economy

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Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Fremont

Mon, 25 Aug - Sun, 7 Sep
SWISS Logo
08:40 - 16:10LHR-SFO
15h 30m1 stop
SWISS Logo
19:30 - 17:50SFO-LHR
14h 20m1 stop
£255SWISS
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Wed, 12 Nov - Wed, 19 Nov
SWISS Logo
20:05 - 16:25LHR-SFO
28h 20m1 stop
SWISS Logo
19:25 - 21:40SFO-LHR
18h 15m1 stop
£326SWISS
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Mon, 25 Aug - Tue, 9 Sep
Virgin Atlantic Logo
06:30 - 11:45LHR-SFO
13h 15m1 stop
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
£372Virgin Atlantic
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Wed, 3 Sep - Tue, 23 Sep
Virgin Atlantic Logo
06:30 - 11:45LHR-SFO
13h 15m1 stop
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
£374Virgin Atlantic
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Wed, 24 Sep - Thu, 2 Oct
British Airways Logo
10:45 - 13:50LHR-SFO
11h 05mdirect
British Airways Logo
16:30 - 10:55SFO-LHR
10h 25mdirect
£378British Airways
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Wed, 3 Sep - Wed, 1 Oct
British Airways Logo
14:15 - 17:25LHR-SFO
11h 10mdirect
British Airways Logo
19:20 - 13:45SFO-LHR
10h 25mdirect
£380British Airways
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Fri, 5 Sep - Sat, 20 Sep
Lufthansa Logo
08:40 - 16:10LHR-SFO
15h 30m1 stop
Lufthansa Logo
19:55 - 14:10SFO-LHR
10h 15mdirect
£425Lufthansa
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Fri, 5 Sep - Fri, 19 Sep
Lufthansa Logo
06:30 - 12:40LHR-SFO
14h 10m1 stop
Lufthansa Logo
19:55 - 14:10SFO-LHR
10h 15mdirect
£428Lufthansa
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Sun, 7 Sep - Sun, 14 Sep
United Airlines Logo
07:25 - 19:00LHR-SFO
19h 35m1 stop
United Airlines Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
£439United Airlines
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Wed, 3 Sep - Mon, 22 Sep
United Airlines Logo
08:40 - 16:35LHR-SFO
15h 55m1 stop
United Airlines Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
£459United Airlines
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Good to know - Cheap tickets from London Heathrow Airport to Fremont

Low seasonJanuary
High seasonJuly
Cheapest flight£255
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (33% 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 United AirlinesLHR-SFOSept 2024
Download all your music. Add shows and movies to your queue. Bring short so you can relax. Bring long charger cords.
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 20m.

  • 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 Monday and avoid Saturdays if you're looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Thursdays 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 Vueling for £308. SWISS offered a return connection from £255 and Scandinavian Airlines from £341.

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 82 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 July, August and September. 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.
7.6
Austrian AirlinesOverall score based on 802 reviews
8.1Crew
6.8Food
7.3Comfort
6.8Entertainment
7.6Boarding
Airline reviews

Five star experience all around except for my seat, which was broken. It would only go down 70%.Of the way. It defeats the purpose of buying a business class ticket if you don’t actually get to lay flat..

6.0 GoodBo, May 2025VIE - CPH
Read more Austrian Airlines reviews

Five star experience all around except for my seat, which was broken. It would only go down 70%.Of the way. It defeats the purpose of buying a business class ticket if you don’t actually get to lay flat..

I love this airline.God bless CAO and the whole staff of this company

Great staff, efficient and knowledgeable. Very helpful with others and considerate towards those with children

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

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 .

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

Its good expeince but in enternteiment please be like you tube the music i like or movie

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

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 ;)

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

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.

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

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.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

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

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