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Cheap flights from London to Fremont from £400

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
30 May — 6 Jun1
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 30 April 2026.

Fri 15/511:05
LHR
-
SFO
1 stop18h 15m
United Airlines
Sun 31/523:59
SFO
-
LHR
1 stop13h 36m
United Airlines
Deal found 28/4£460
Fri 15/513:00
LHR
-
SFO
Nonstop11h 10m
United Airlines
Fri 29/523:59
SFO
-
LHR
1 stop13h 26m
United Airlines
Deal found 28/4£462
Sat 2/506:55
LHR
-
SFO
1 stop15h 35m
Lufthansa
Sat 16/519:30
SFO
-
LHR
Nonstop10h 40m
Lufthansa
Deal found 25/4£474
Mon 7/906:30
LHR
-
SFO
1 stop13h 15m
Virgin Atlantic
Mon 14/912:20
SFO
-
LHR
1 stop14h 20m
Virgin Atlantic
Deal found 27/4£476
Wed 6/506:55
LHR
-
SFO
1 stop15h 35m
Lufthansa
Wed 13/516:35
SFO
-
LHR
Nonstop10h 35m
Lufthansa
Deal found 25/4£479
Wed 16/1210:05
LHR
-
SFO
Nonstop11h 15m
United Airlines
Mon 4/112:50
SFO
-
LHR
Nonstop10h 35m
United Airlines
Deal found 29/4£480
Tue 5/506:55
LHR
-
SFO
1 stop15h 35m
Lufthansa
Tue 12/512:45
SFO
-
LHR
1 stop13h 55m
Lufthansa
Deal found 28/4£481
Mon 4/506:55
LHR
-
SFO
1 stop15h 35m
Multiple Airlines
Mon 11/519:35
SFO
-
LHR
1 stop14h 15m
Multiple Airlines
Deal found 26/4£482
Tue 12/507:45
LHR
-
SFO
1 stop16h 56m
United Airlines
Fri 29/521:15
SFO
-
LHR
1 stop16h 10m
United Airlines
Deal found 28/4£482
Wed 6/507:25
LHR
-
SFO
1 stop15h 05m
Lufthansa
Fri 15/521:05
SFO
-
LHR
1 stop14h 35m
Lufthansa
Deal found 27/4£485
Mon 7/910:45
LHR
-
SFO
Nonstop11h 05m
Iberia
Mon 14/919:30
SFO
-
LHR
Nonstop10h 25m
Iberia
Deal found 27/4£485
Mon 7/919:15
LCY
-
SFO
1 stop29h 05m
Multiple Airlines
Mon 14/908:49
SFO
-
LCY
2 stops24h 31m
Multiple Airlines
Deal found 27/4£499

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 30 April 2026.

Round-trip from

£460

One-way from

£400

Popular in

December

Cheapest in

February

Average price

£497
United Airlines
  • United Airlines
  • 15/5-31/5
  • 2 total stops
  • 31h 51m total
  • London to Fremont
Search Deals
15/5
  • 15/5
  • 1 total stop
  • 22h 45m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 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 30 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

Tue 27/10

06:30-12:50

1 stop13h 20m

San Francisco

Tue 3/11

16:45-10:55

Nonstop10h 10m

£510

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 15/5

08:40-16:15

1 stop15h 35m

San Francisco

Fri 22/5

06:00-10:10

1 stop20h 10m

£511

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 12/5

08:45-16:25

1 stop15h 40m

San Francisco

Fri 22/5

12:15-10:10

1 stop13h 55m

£513

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 30/9

08:50-15:55

1 stop15h 05m

San Francisco

Wed 7/10

15:50-12:45

1 stop12h 55m

£521

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 30/8

06:30-11:45

1 stop13h 15m

San Francisco

Sun 6/9

18:50-17:35

1 stop14h 45m

£532

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 14/5

16:15-19:25

Nonstop11h 10m

San Francisco

Thu 21/5

19:45-10:10

1 stop30h 25m

£543

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Thu 25/6

08:25-21:50

2 stops21h 25m

San Francisco

Fri 10/7

06:00-07:15

2 stops17h 15m

£572

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Thu 25/6

17:50-11:45

1 stop25h 55m

San Francisco

Sun 16/8

06:00-07:15

2 stops17h 15m

£576

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 5/9

17:30-14:40

2 stops29h 10m

San Francisco

Sat 12/9

16:45-18:50

2 stops18h 05m

£578

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 26/5

10:45-13:50

Nonstop11h 05m

San Francisco

Fri 5/6

06:01-07:50

1 stop17h 49m

£584

Flights are sorted by cheapest return flights first.

Deals found on 26/4

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

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 30 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 30 April 2026.

The most flights from LON to FR8 are scheduled on a Monday (42 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (25 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 30 April 2026.
See what other customers who have flown with Austrian Airlines,United Airlines, andVirgin Atlantic 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
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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
913 reviews
Austrian Airlines
7.6
Good
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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
9,677 reviews
Austrian Airlines
7.6
Good
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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
7.4
Good
688 reviews
Austrian Airlines
7.6
Good
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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
7,962 reviews
Austrian Airlines
7.6
Good
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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
7,937 reviews
Austrian Airlines
7.6
Good
913 reviews
Check prices

Food

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Entertainment

6.8

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 £510, KLM can have you in Fremont from London in 13h 20m. 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 £269. However, be on the lookout for offers from Virgin Atlantic and JetBlue, 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 (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 £391. While the most popular route (London Heathrow - San Francisco) can be booked for £399 on average, our data indicates £1,160 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Fremont

See prices for flight routes from nearby airports that may be better suited for you.
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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 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£319Average£665FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£333Average£412FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£342Average£508FlexibilityNo cancel feeOn-time70%
Search British Airways flights
SWISSCheapest£349Average£448FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£351Average£558FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£354Average£488FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£358Average£464FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£362Average£481FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£366Average£531FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£370Average£508FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines 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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