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Cheap flights from London to Fremont from £391

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
20 May — 27 May1
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 Tuesday

Cheap 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 20 April 2026.

Thu 1/1014:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Sat 10/1019:30
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 17/4£405
Tue 22/906:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Sat 26/916:45
SFO
-
LHR
1 stop17h 45m
Scandinavian Airlines
Deal found 16/4£415
Mon 1/606:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Wed 2/916:45
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Deal found 17/4£416
Fri 1/514:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Mon 11/516:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 18/4£421
Wed 24/612:25
LHR
-
SFO
1 stop16h 17m
Delta
Thu 6/813:38
SFO
-
LHR
1 stop17h 57m
Delta
Deal found 16/4£422
Tue 28/414:10
LHR
-
SFO
1 stop17h 49m
American Airlines
Mon 11/521:45
SFO
-
LHR
1 stop15h 55m
American Airlines
Deal found 18/4£424
Wed 29/414:05
LHR
-
SFO
1 stop15h 17m
Air Canada
Sun 10/511:10
SFO
-
LHR
1 stop14h 50m
Air Canada
Deal found 18/4£425
Sat 2/509:30
LHR
-
SFO
1 stop19h 32m
Air Canada
Mon 11/513:35
SFO
-
LHR
1 stop14h 15m
Air Canada
Deal found 18/4£427
Thu 4/606:00
LHR
-
SFO
1 stop18h 35m
TAP AIR PORTUGAL
Thu 3/916:30
SFO
-
LHR
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 17/4£431
Thu 4/606:00
LHR
-
SFO
1 stop18h 35m
TAP AIR PORTUGAL
Wed 9/916:35
SFO
-
LHR
1 stop18h 15m
TAP AIR PORTUGAL
Deal found 17/4£431
Sun 31/508:20
LHR
-
SFO
1 stop17h 16m
American Airlines
Tue 8/906:00
SFO
-
LHR
1 stop17h 50m
American Airlines
Deal found 17/4£433
Tue 9/610:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Mon 6/716:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 15/4£433

Find flight deals from London to Fremont

Keep the following information in mind while searching for London to Fremont flight deals. Data was last updated 20 April 2026.

Round-trip from

£405

One-way from

£391

Popular in

December

Cheapest in

February

Average price

£493
British Airways
  • British Airways
  • 1/10-10/10
  • Nonstop
  • 21h 35m total
  • London to Fremont
Search Deals
3/5
  • 3/5
  • 3 total stops
  • 46h 23m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 20 April 2026.
Use the filters below to find and compare flights from London to Fremont that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/5

10:35-13:40

Nonstop11h 05m

San Francisco

Tue 12/5

19:30-14:10

Nonstop10h 40m

£539

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 17/9

11:30-18:00

1 stop14h 30m

San Francisco

Thu 24/9

17:55-12:15

Nonstop10h 20m

£543

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 14/5

08:45-16:15

1 stop15h 30m

San Francisco

Thu 21/5

19:45-10:10

1 stop30h 25m

£547

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 2/9

06:30-12:40

1 stop14h 10m

San Francisco

Sun 13/9

19:55-14:10

Nonstop10h 15m

£547

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Wed 3/6

06:15-15:55

1 stop17h 40m

San Francisco

Wed 10/6

17:40-21:15

1 stop19h 35m

£550

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 25/6

10:55-21:51

1 stop18h 56m

San Francisco

Sun 5/7

23:15-17:30

Nonstop10h 15m

£551

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 2/7

10:25-18:00

1 stop15h 35m

San Francisco

Thu 23/7

15:05-16:00

1 stop16h 55m

£552

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sun 3/5

17:00-12:50

1 stop27h 50m

San Francisco

Sun 10/5

15:05-16:00

1 stop16h 55m

£560

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 22/6

12:45-15:45

Nonstop11h 00m

San Francisco

Wed 1/7

23:15-17:30

Nonstop10h 15m

£561

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 16/10

12:45-15:45

Nonstop11h 00m

San Francisco

Fri 23/10

17:55-12:15

Nonstop10h 20m

£561

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 17 April 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 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 20 April 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 20 April 2026.

The most flights from LON to FR8 are scheduled on a Monday (37 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (31 on average).

How much does it cost for a return flight from London to Fremont?

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 20 April 2026.
See what other customers who have flown with Austrian Airlines,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.
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Austrian Airlines
7.6
Good
904 reviews
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Virgin Atlantic
7.5
Good
687 reviews
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
United Airlines
7.4
Good
9,611 reviews
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Lufthansa
6.8
Okay
7,935 reviews
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
British Airways
6.7
Okay
7,896 reviews
Austrian Airlines
7.6
Good
904 reviews
Check prices

Boarding

7.6

Comfort

7.3

Food

6.8

Crew

8.1

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.

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 £539, United Airlines can have you in Fremont from London in 11h 05m. 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £268. However, be on the lookout for offers from WestJet and Virgin Atlantic, 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 Stansted - 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 (87%), Austrian Airlines (87%), United Airlines (87%).

  • What are the cheapest flights from London to Fremont?

    Looking at all options, your cheapest flight can be booked for £396. While the most popular route (London Heathrow - San Francisco) can be booked for £486 on average, our data indicates £1,176 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.

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 20 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£318Average£586FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£333Average£411FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£336Average£549FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£341Average£506FlexibilityNo cancel feeOn-time70%
Search British Airways flights
SWISSCheapest£349Average£447FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£350Average£555FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£354Average£499FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£357Average£464FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£361Average£480FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£365Average£530FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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