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Cheap flights from London to Fremont from £363

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
8 2월 — 15 2월1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Fremont are usually found in February or September, booked 51 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from London to Fremont

Keep the following information in mind while searching for London to Fremont flight deals. Data was last updated 9 1월 2026.

Round-trip from

£403

One-way from

£363

Popular in

July

Cheapest in

February

Average price

£495
United Airlines
  • United Airlines
  • 6/4-27/4
  • 2 total stops
  • 32h 50m total
  • London to Fremont
Search Deals
SWISS
  • SWISS
  • 15/6
  • 1 total stop
  • 30h 10m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from London to Fremont

Enter your travel dates to find the best prices.

Cheapest flights from London to Fremont
Explore the most affordable flight options available from London to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 1월 2026.

월 6/406:30LHR - SFO
1 stop14h 10mUnited Airlines
월 27/405:00SFO - LHR
1 stop18h 40mUnited Airlines
Deal found 8/1£403
수 1/414:45LHR - SFO
1 stop16h 59mFinnair
수 15/410:50SFO - LHR
1 stop12h 50mFinnair
Deal found 8/1£404
금 6/211:35LHR - SFO
2 stops16h 32mUnited Airlines
금 13/216:15SFO - LHR
1 stop13h 15mUnited Airlines
Deal found 8/1£405
일 8/317:40LCY - SFO
1 stop30h 50mSWISS
일 15/320:25SFO - LCY
1 stop15h 15mSWISS
Deal found 8/1£405
목 14/520:55LHR - SFO
1 stop22h 50mVirgin Atlantic
금 29/517:55SFO - LHR
Nonstop10h 20mVirgin Atlantic
Deal found 8/1£405
토 24/1013:10LHR - SFO
1 stop16h 16mFinnair
금 6/1117:30SFO - LHR
Nonstop10h 30mFinnair
Deal found 8/1£406
수 6/510:35LHR - SFO
Nonstop11h 05mMultiple Airlines
수 27/513:00SFO - LHR
Nonstop10h 25mMultiple Airlines
Deal found 8/1£407
토 18/409:30LHR - SFO
2 stops20h 00mAir Canada
토 25/413:20SFO - LHR
1 stop16h 00mAir Canada
Deal found 8/1£408
일 1/220:30STN - SFO
2 stops24h 10mMultiple Airlines
금 6/214:40SFO - STN
2 stops22h 05mMultiple Airlines
Deal found 7/1£408
월 16/214:30LHR - SFO
1 stop29h 50mAir Canada
일 22/208:25SFO - LHR
2 stops28h 10mAir Canada
Deal found 7/1£408
월 22/616:10LHR - SFO
1 stop14h 26mFinnair
일 12/707:00SFO - LHR
1 stop16h 20mFinnair
Deal found 7/1£409
금 24/409:25LGW - SFO
1 stop14h 50mSWISS
금 8/514:00SFO - LGW
1 stop19h 50mSWISS
Deal found 8/1£409

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Fremont that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 1월 2026.
Use the filters below to find and compare flights from London to Fremont that are best for you.

Fly from

London

Fly to

Fremont

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

금 6/2

11:35-20:07

2 stops16h 32m

San Francisco

금 13/2

16:15-13:30

1 stop13h 15m

£405

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

월 19/1

19:30-16:30

2 stops53h 00m

San Francisco

월 26/1

11:45-16:20

2 stops20h 35m

£410

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

월 26/1

07:00-16:30

2 stops17h 30m

San Francisco

월 2/2

19:25-21:25

2 stops18h 00m

£410

LondonSan Francisco

LCY - SFO

LCYSFO

London City

금 30/1

17:40-16:30

1 stop30h 50m

San Francisco

금 6/2

19:25-12:45

1 stop33h 20m

£411

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

화 31/3

05:40-17:55

1 stop20h 15m

San Francisco

일 19/4

19:40-23:15

1 stop19h 35m

£414

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

토 18/4

10:35-13:40

Nonstop11h 05m

San Francisco

토 25/4

16:35-11:10

Nonstop10h 35m

£414

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

월 9/2

18:40-16:30

1 stop29h 50m

San Francisco

월 16/2

19:25-17:50

1 stop14h 25m

£415

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

금 30/1

17:25-16:30

2 stops31h 05m

San Francisco

금 6/2

19:25-08:15

2 stops28h 50m

£421

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

금 23/1

13:25-22:58

2 stops17h 33m

San Francisco

금 30/1

07:30-11:20

2 stops19h 50m

£422

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

목 2/4

10:45-13:50

Nonstop11h 05m

San Francisco

일 19/4

10:50-07:40

1 stop12h 50m

£425

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Fremont

How far ahead should I book a flight from London to Fremont?

Use this chart to determine the optimal time to book a return flight from London to Fremont. Price data was last updated on 2 January 2026.

The price you pay for your flight from London to Fremont may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London to Fremont?

Currently, February is the cheapest month in which you can book a flight from London to Fremont (average of £353). Flying from London to Fremont in July is currently the most expensive (average of £444). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to FR8?

Find hourly flight availability from London to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 1월 2026.

When flying from London to Fremont, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Fremont

Explore weekly flight availability from London to Fremont. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 9 1월 2026.

The most flights from LON to FR8 are scheduled on a Monday (31 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 on average).

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fremont. Reviews last updated 9 1월 2026.
See what other customers who have flown with KLM, Virgin Atlantic, andUnited Airlines from London to Fremont have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,143 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,698 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,659 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Comfort

7.6

Food

7.2

Overall

7.7

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from London to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Fremont?

    For as low as £405, United Airlines can have you in Fremont from London in 16h 32m. London and Fremont are separated by a distance of 5350 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London to Fremont one-way?

    The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as £249. However, be on the lookout for offers from TAP AIR PORTUGAL and WestJet, as they are both options that can get you from London to Fremont for a low price.

  • What are the most popular routes from London to Fremont?

    The most popular route from London to Fremont is London Heathrow - San Francisco. You may also consider London Gatwick - San Francisco or London City - San Francisco.

  • What are the most reliable airlines from London to Fremont?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Fremont on time: Air Canada (88%), Austrian Airlines (88%), United Airlines (88%).

  • What are the cheapest flights from London to Fremont?

    Looking at all options, your cheapest flight can be booked for £381. While the most popular route (London Heathrow - San Francisco) can be booked for £307 on average, our data indicates £2,008 when flying from London to Fremont.

  • Can I find deals for flights from London to Fremont that include hotel bookings?

    Yes. In addition to deals on London to Fremont flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Fremont.

  • Can I find deals for business class flights from London to Fremont?

    Yes. Cheapflights offers flight deals from London to Fremont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Fremont?

    Currently, February is the cheapest month in which you can book a flight from London to Fremont (average of £353). Flying from London to Fremont in July is currently the most expensive (average of £444). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for London to Fremont

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Top 10 airlines flying from London to Fremont

Discover the top 10 airlines that operate flights from London to Fremont. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 1월 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£237Average£565FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£335Average£479FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£337Average£551FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£352Average£556FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£354Average£542FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
SWISSCheapest£357Average£439FlexibilityNo cancel feeOn-time79%
Search SWISS flights
TAP AIR PORTUGALCheapest£358Average£458FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£373Average£482FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£375Average£534FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£375Average£572FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Fremont?

Deals for London to Fremont flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Fremont?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Fremont.

Can Cheapflights find flights from London to Fremont with no change fees?

Yes, we can. To see specific flights from London to Fremont with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Fremont become cheaper?

Yes, Cheapflights offers price alerts on London to Fremont flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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