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Cheap flights from London to Fremont from £378

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
29 Aug — 5 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Fremont are usually found in February or September, booked 41 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

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 July 2026.

Fri 6/1110:05
LHR
-
SFO
Nonstop11h 15m
United Airlines
Tue 10/1112:50
SFO
-
LHR
Nonstop10h 35m
United Airlines
Deal found 28/7£454
Tue 29/909:15
LCY
-
SFO
1 stop18h 35m
Multiple Airlines
Tue 29/923:39
SFO
-
LCY
2 stops35h 01m
Multiple Airlines
Deal found 29/7£454
Thu 1/1015:20
LHR
-
SFO
2 stops27h 55m
Lufthansa
Sun 18/1012:28
SFO
-
LHR
1 stop13h 42m
Lufthansa
Deal found 28/7£454
Thu 24/914:05
LHR
-
SFO
1 stop29h 12m
Air Canada
Wed 30/911:10
SFO
-
LHR
1 stop14h 50m
Air Canada
Deal found 26/7£455
Tue 29/913:00
LHR
-
SFO
Nonstop11h 00m
Multiple Airlines
Tue 29/919:45
SFO
-
LHR
Nonstop10h 25m
Multiple Airlines
Deal found 28/7£456
Tue 22/909:15
LCY
-
SFO
1 stop15h 00m
SWISS
Mon 12/1019:35
SFO
-
LCY
1 stop13h 55m
SWISS
Deal found 26/7£456
Sat 24/1009:30
LHR
-
SFO
2 stops19h 50m
Air Canada
Sat 31/1009:00
SFO
-
LHR
2 stops19h 20m
Air Canada
Deal found 25/7£457
Wed 21/1009:15
LCY
-
SFO
2 stops17h 26m
Multiple Airlines
Thu 22/1019:35
SFO
-
LCY
1 stop28h 50m
Multiple Airlines
Deal found 27/7£457
Wed 9/908:40
LHR
-
SFO
1 stop15h 35m
Multiple Airlines
Wed 16/908:10
SFO
-
LHR
1 stop14h 45m
Multiple Airlines
Deal found 26/7£457
Tue 29/1215:20
LHR
-
SFO
1 stop16h 47m
United Airlines
Fri 8/113:10
SFO
-
LHR
1 stop13h 40m
United Airlines
Deal found 28/7£458
Sun 11/1012:20
LGW
-
SFO
2 stops20h 24m
American Airlines
Thu 15/1006:47
SFO
-
LGW
2 stops19h 53m
American Airlines
Deal found 29/7£458
Sat 26/908:30
LHR
-
SFO
1 stop14h 54m
Air Canada
Thu 1/1011:35
SFO
-
LHR
1 stop14h 00m
Air Canada
Deal found 26/7£459

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 July 2026.

Round-trip from

£454

One-way from

£378

Popular in

July

Cheapest in

February

Average price

£627
United Airlines
  • United Airlines
  • 6/11-8/11
  • Nonstop
  • 21h 45m total
  • London to Fremont
Search Deals
8/10
  • 8/10
  • 3 total stops
  • 35h 47m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 July 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

Wed 23/9

14:50-22:55

2 stops16h 05m

San Francisco

Sat 26/9

12:45-10:40

1 stop13h 55m

£456

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 27/8

06:30-12:40

1 stop14h 10m

San Francisco

Wed 9/9

12:50-07:25

Nonstop10h 35m

£480

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 21/10

08:40-16:15

1 stop15h 35m

San Francisco

Mon 2/11

12:50-07:25

Nonstop10h 35m

£486

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 27/8

16:15-19:10

Nonstop10h 55m

San Francisco

Thu 3/9

21:15-20:40

1 stop15h 25m

£504

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 4/9

08:40-16:15

1 stop15h 35m

San Francisco

Fri 4/9

23:59-07:55

1 stop23h 56m

£509

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 9/9

09:25-16:15

1 stop14h 50m

San Francisco

Tue 15/9

14:40-17:50

2 stops19h 10m

£514

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Thu 27/8

15:50-14:40

2 stops30h 50m

San Francisco

Wed 9/9

16:45-21:15

2 stops20h 30m

£514
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 21/9

10:35-13:35

Nonstop11h 00m

San Francisco

Mon 28/9

16:45-11:10

Nonstop10h 25m

£514

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 22/9

16:15-19:15

Nonstop11h 00m

San Francisco

Sun 27/9

19:45-14:10

Nonstop10h 25m

£515

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 2/9

16:15-19:10

Nonstop10h 55m

San Francisco

Sat 19/9

12:55-07:25

Nonstop10h 30m

£515

Flights are sorted by cheapest return flights first.

Deals found on 29/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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 July 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 July 2026.

The most flights from LON to FR8 are scheduled on a Wednesday (44 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

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

Airfare is below average for this route at the moment.
London to Fremont flights typically cost between £518 and £689 in November.
The cheapest return price found within the last 5 days was £454 on United Airlines (6 Nov–8 Nov).

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 July 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
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Austrian Airlines
7.6
Good
950 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Virgin Atlantic
7.5
Good
694 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
United Airlines
7.4
Good
10,046 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Lufthansa
6.8
Okay
8,166 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
British Airways
6.7
Okay
8,127 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Entertainment

6.8

Crew

8.1

Food

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

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 £514, United Airlines can have you in Fremont from London in 14h 50m. London and Fremont are separated by a distance of 5374 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 £271. 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: SAUDIA (100%), Air Canada (80%), Austrian Airlines (80%).

  • What are the cheapest flights from London to Fremont?

    Looking at all options, your cheapest flight can be booked for £323. While the most popular route (London Heathrow - San Francisco) can be booked for £389 on average, our data indicates £1,617 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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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 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£276Average£680FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£350Average£467FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£355Average£579FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£360Average£480FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£368Average£546FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£372Average£523FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£375Average£498FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Scandinavian AirlinesCheapest£378Average£488FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£378Average£596FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£380Average£562FlexibilityNo 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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