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Cheap flights from London Heathrow Airport to Fremont from £404

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 19/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Fremont are usually found in February or September, booked 23 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Fremont

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Fremont
Explore the most affordable flight options available from Heathrow to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Thu 24/910:15
LHR
-
SFO
1 stop15h 01m
Air Canada
Tue 29/908:28
SFO
-
LHR
2 stops17h 07m
Air Canada
Deal found 23/7£459
Tue 22/914:05
LHR
-
SFO
1 stop15h 43m
United Airlines
Thu 24/912:28
SFO
-
LHR
1 stop13h 42m
United Airlines
Deal found 22/7£459
Fri 16/1010:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Sat 31/1018:25
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 20/7£460
Sat 26/909:30
LHR
-
SFO
2 stops18h 02m
Multiple Airlines
Sat 3/1008:10
SFO
-
LHR
1 stop14h 20m
Multiple Airlines
Deal found 22/7£461
Sat 24/1009:30
LHR
-
SFO
2 stops19h 50m
Air Canada
Sun 1/1109:00
SFO
-
LHR
2 stops18h 20m
Air Canada
Deal found 22/7£462
Wed 19/807:25
LHR
-
SFO
1 stop14h 55m
Lufthansa
Mon 24/813:54
SFO
-
LHR
1 stop14h 01m
Lufthansa
Deal found 22/7£462
Fri 20/1111:10
LHR
-
SFO
2 stops19h 47m
Air Canada
Mon 30/1109:00
SFO
-
LHR
2 stops18h 20m
Air Canada
Deal found 24/7£463
Tue 29/917:40
LHR
-
SFO
1 stop23h 28m
Air Canada
Sun 1/1123:29
SFO
-
LHR
1 stop25h 01m
Air Canada
Deal found 23/7£464
Wed 23/1213:45
LHR
-
SFO
Nonstop11h 10m
Multiple Airlines
Tue 5/112:50
SFO
-
LHR
Nonstop10h 35m
Multiple Airlines
Deal found 21/7£465
Wed 9/908:50
LHR
-
SFO
1 stop15h 05m
British Airways
Sun 13/916:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 21/7£465
Sat 26/913:00
LHR
-
SFO
Nonstop11h 00m
Brussels Airlines
Tue 6/1012:55
SFO
-
LHR
Nonstop10h 30m
Brussels Airlines
Deal found 22/7£466
Thu 20/809:50
LHR
-
SFO
1 stop14h 00m
British Airways
Sat 5/916:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 20/7£467

Find flight deals from Heathrow to Fremont

Keep the following information in mind while searching for Heathrow to Fremont flight deals. Data was last updated 25 July 2026.

Round-trip from

£459

One-way from

£404

Popular in

December

Cheapest in

February

Average price

£621
Air Canada
  • Air Canada
  • 24/9-29/9
  • 3 total stops
  • 32h 08m total
  • London to Fremont
Search Deals
19/12
  • 19/12
  • 2 total stops
  • 49h 55m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£2 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 July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 25 July 2026.
Use the filters below to find and compare flights from London Heathrow Airport 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 20/1

10:05-13:20

Nonstop11h 15m

San Francisco

Wed 27/1

16:40-11:15

Nonstop10h 35m

£480

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 25/8

13:30-19:45

1 stop14h 15m

San Francisco

Sun 6/9

16:50-11:10

Nonstop10h 20m

£488

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 11/9

09:00-19:00

1 stop18h 00m

San Francisco

Fri 18/9

23:59-05:55

1 stop21h 56m

£496

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 5/9

06:55-14:20

1 stop15h 25m

San Francisco

Sat 12/9

11:10-10:00

1 stop14h 50m

£498

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 24/9

07:00-16:15

2 stops17h 15m

San Francisco

Mon 28/9

14:25-13:00

1 stop14h 35m

£514
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 8/9

16:15-19:15

Nonstop11h 00m

San Francisco

Tue 15/9

12:55-07:25

Nonstop10h 30m

£517

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 29/9

10:35-13:35

Nonstop11h 00m

San Francisco

Sun 1/11

23:59-07:40

1 stop23h 41m

£519

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 6/9

14:50-22:55

2 stops16h 05m

San Francisco

Wed 21/10

14:20-12:35

1 stop14h 15m

£522

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 8/10

07:00-16:35

2 stops17h 35m

San Francisco

Thu 22/10

19:35-21:30

2 stops17h 55m

£543

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 23/10

10:35-13:35

Nonstop11h 00m

San Francisco

Fri 30/10

17:40-11:15

Nonstop10h 35m

£543

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Heathrow 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 Heathrow Airport to Fremont

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

Find hourly flight availability from Heathrow 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 25 July 2026.

When flying from London Heathrow Airport 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 Heathrow Airport to Fremont

Explore weekly flight availability from Heathrow 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 25 July 2026.

The most flights from LHR to FR8 are scheduled on a Monday (44 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (38 on average).

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

Airfare is below average for this route at the moment.
London Heathrow Airport to Fremont flights typically cost between £515 and £706 in September.
The cheapest return price found within the last 5 days was £459 on Air Canada (24 Sept–29 Sept).

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 25 July 2026.
Get a feel of what it's like to fly with Austrian Airlines,Virgin Atlantic, andUnited Airlines from London Heathrow Airport to Fremont by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.
Austrian Airlines
7.6
Good
950 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.
Virgin Atlantic
7.5
Good
695 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.
United Airlines
7.4
Good
10,034 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.
Lufthansa
6.8
Okay
8,155 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.
British Airways
6.7
Okay
8,132 reviews
Austrian Airlines
7.6
Good
950 reviews
Check prices

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Boarding

7.6

Food

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2026

VIE - IAD

The vegetarian choice wasn’t good. The snack was bad. Otherwise, everything was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow Airport to Fremont?

    Lufthansa, United Airlines, and SWISS can get you from London Heathrow Airport to Fremont in just under 14h 15m. Your travel time can differ by up to 3h 45m. Airlines will cover a distance of 5350 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £272. Virgin Atlantic flights start at £327 while deals on Iberia start at £328 one-way.

  • What are the most reliable airlines from London Heathrow Airport 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 Heathrow Airport to Fremont on time: SAUDIA (100%), Air Canada (80%), Austrian Airlines (80%).

  • What are the cheapest flights from London Heathrow Airport to Fremont?

    On average you can expect to pay £1,726 for a flight from London Heathrow Airport to Fremont. The cheapest flight overall is £328 while the most popular route, (London Heathrow - San Francisco) is currently priced at £369.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow 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 Heathrow to Fremont

Discover the top 10 airlines that operate flights from Heathrow 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 25 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£323Average£684FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£352Average£435FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£357Average£583FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£363Average£474FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£370Average£549FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£375Average£530FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£377Average£499FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Scandinavian AirlinesCheapest£380Average£488FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£381Average£599FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£382Average£563FlexibilityNo 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 Heathrow to Fremont?

Deals for Heathrow 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 Heathrow to Fremont?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Fremont from Heathrow.

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

Yes! Cheapflights helps users easily find flights from Heathrow to Fremont with no change fees.

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

Yes! Start tracking prices for Heathrow to Fremont flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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