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Cheap flights from London to Fremont from £435

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
20 Jun — 27 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 21 May 2026.

Sat 5/912:45
LHR
-
SFO
Nonstop11h 00m
Delta
Sat 12/909:00
SFO
-
LHR
1 stop15h 50m
Delta
Deal found 17/5£497
Wed 2/917:00
LGW
-
SFO
1 stop27h 50m
Virgin Atlantic
Wed 9/913:00
SFO
-
LGW
2 stops19h 00m
Virgin Atlantic
Deal found 17/5£497
Thu 30/716:20
LHR
-
SFO
1 stop16h 33m
Multiple Airlines
Wed 12/817:55
SFO
-
LHR
Nonstop10h 20m
Multiple Airlines
Deal found 17/5£498
Wed 2/907:30
LHR
-
SFO
1 stop15h 45m
Lufthansa
Wed 16/912:24
SFO
-
LHR
1 stop15h 11m
Lufthansa
Deal found 18/5£499
Fri 30/1011:40
LHR
-
SFO
Nonstop11h 00m
Virgin Atlantic
Mon 2/1118:50
SFO
-
LHR
1 stop14h 00m
Virgin Atlantic
Deal found 16/5£500
Sat 15/815:15
LHR
-
SFO
1 stop16h 39m
Virgin Atlantic
Sat 22/815:37
SFO
-
LHR
1 stop13h 28m
Virgin Atlantic
Deal found 16/5£501
Mon 17/817:50
LCY
-
SFO
1 stop25h 55m
Virgin Atlantic
Mon 24/805:36
SFO
-
LCY
2 stops17h 39m
Virgin Atlantic
Deal found 16/5£501
Wed 29/706:45
LHR
-
SFO
2 stops26h 14m
British Airways
Wed 12/816:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 17/5£502
Sat 5/918:30
LHR
-
SFO
Nonstop10h 55m
KLM
Sat 12/917:55
SFO
-
LHR
Nonstop10h 20m
KLM
Deal found 17/5£503
Fri 21/806:30
LHR
-
SFO
1 stop13h 15m
Virgin Atlantic
Mon 14/910:00
SFO
-
LHR
1 stop16h 00m
Virgin Atlantic
Deal found 16/5£503
Tue 22/909:25
LGW
-
SFO
1 stop14h 50m
SWISS
Tue 29/919:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 18/5£503
Tue 22/908:45
LHR
-
SFO
1 stop15h 30m
SWISS
Tue 29/919:35
SFO
-
LHR
1 stop14h 15m
SWISS
Deal found 18/5£504

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 21 May 2026.

Round-trip from

£497

One-way from

£435

Popular in

December

Cheapest in

February

Average price

£538
Delta
  • Delta
  • 5/9-12/9
  • 1 total stop
  • 26h 50m total
  • London to Fremont
Search Deals
19/10
  • 19/10
  • 2 total stops
  • 32h 35m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 21 May 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

Sat 5/9

12:45-15:45

Nonstop11h 00m

San Francisco

Sat 12/9

12:20-10:40

1 stop14h 20m

£497

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 16/11

06:30-11:45

1 stop13h 15m

San Francisco

Mon 23/11

10:00-10:00

1 stop16h 00m

£505

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 6/8

08:20-18:24

1 stop18h 04m

San Francisco

Mon 10/8

09:41-10:00

1 stop16h 19m

£512

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 22/8

12:45-15:45

Nonstop11h 00m

San Francisco

Thu 17/9

23:15-17:30

Nonstop10h 15m

£523

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Sun 23/8

20:15-18:13

2 stops29h 58m

San Francisco

Wed 16/9

07:30-09:30

2 stops18h 00m

£529

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 21/9

07:30-15:20

1 stop15h 50m

San Francisco

Mon 28/9

19:45-14:10

Nonstop10h 25m

£544

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 9/9

21:15-14:30

2 stops25h 15m

San Francisco

Tue 15/9

19:20-09:45

2 stops30h 25m

£554

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Tue 17/11

18:40-16:30

1 stop29h 50m

San Francisco

Tue 24/11

19:25-17:50

1 stop14h 25m

£568

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 2/9

19:00-11:45

1 stop24h 45m

San Francisco

Wed 23/9

06:00-07:55

2 stops17h 55m

£576
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 25/8

12:45-15:45

Nonstop11h 00m

San Francisco

Fri 11/9

23:15-17:30

Nonstop10h 15m

£577

Flights are sorted by cheapest return flights first.

Deals found on 17/5

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 21 May 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 21 May 2026.

The most flights from LON to FR8 are scheduled on a Thursday (42 on average). You will have fewer flight options on Friday, 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 21 May 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
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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
919 reviews
Austrian Airlines
7.6
Good
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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
689 reviews
Austrian Airlines
7.6
Good
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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
9,748 reviews
Austrian Airlines
7.6
Good
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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
8,018 reviews
Austrian Airlines
7.6
Good
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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
7,991 reviews
Austrian Airlines
7.6
Good
919 reviews
Check prices

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Overall

7.6

Comfort

7.3

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 £497, Delta can have you in Fremont from London in 11h. 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 £273. However, be on the lookout for offers from Virgin Atlantic and Iberia, 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 £449. While the most popular route (London Heathrow - San Francisco) can be booked for £419 on average, our data indicates £1,216 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

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 21 May 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£321Average£670FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£336Average£419FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£344Average£620FlexibilityNo cancel feeOn-time70%
Search British Airways flights
SWISSCheapest£352Average£452FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£353Average£576FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£355Average£482FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£360Average£469FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£364Average£484FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£368Average£553FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£372Average£511FlexibilityNo 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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