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Cheap flights from London Heathrow Airport to Fremont from £342

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
23 Nov — 30 Nov1
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 82 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Find 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 24 October 2025.

Tue 25/1118:30LHR - SFO
1 stop28h 00mTAP AIR PORTUGAL
Wed 3/1216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 23/10£383
Sat 8/1106:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Sat 15/1116:35SFO - LHR
1 stop36h 05mTAP AIR PORTUGAL
Deal found 23/10£389
Mon 24/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Mon 8/1216:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 23/10£397
Fri 5/1206:00LHR - SFO
1 stop18h 05mTAP AIR PORTUGAL
Mon 8/1216:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 23/10£398
Thu 20/1117:30LHR - SFO
2 stops29h 05mScandinavian Airlines
Fri 5/1216:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 22/10£405
Sat 22/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Sat 6/1216:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Deal found 23/10£413
Wed 12/1106:00LHR - SFO
1 stop16h 30mTAP AIR PORTUGAL
Wed 14/116:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 23/10£414
Fri 21/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Sun 30/1116:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Deal found 22/10£415
Mon 10/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Thu 13/1116:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 22/10£415
Fri 7/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Fri 14/1116:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 22/10£418

Cheap flight deals from Heathrow to Fremont

Keep the following information in mind while searching for Heathrow to Fremont flight deals. Data was last updated 24 October 2025.

Round-trip from

£383

One-way from

£342

Popular in

July

Cheapest in

February

Average price

£502
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 25/11-3/12
  • 2 total stops
  • 50h 05m total
  • London to Fremont
Search Deals
SWISS
  • SWISS
  • 11/12
  • 1 total stop
  • 15h 30m total
  • London to Fremont
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 24 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Fremont that are best for you.

Fly from

Heathrow

Fly to

Fremont

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 14/11

06:40-14:35

1 stop15h 55m

San Francisco

Mon 24/11

16:40-16:00

1 stop15h 20m

£433

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 18/1

21:05-14:35

2 stops25h 30m

San Francisco

Fri 23/1

16:40-08:55

2 stops32h 15m

£442

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/3

21:05-15:35

2 stops25h 30m

San Francisco

Sat 21/3

17:40-18:50

2 stops18h 10m

£455

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 14/3

06:40-15:35

1 stop15h 55m

San Francisco

Sun 22/3

17:40-16:00

1 stop15h 20m

£456

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 14/1

09:00-16:30

1 stop15h 30m

San Francisco

Mon 2/2

12:55-10:50

1 stop13h 55m

£466

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 21/1

09:00-16:30

1 stop15h 30m

San Francisco

Wed 28/1

11:45-16:20

2 stops20h 35m

£467

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 8/11

15:35-14:35

2 stops31h 00m

San Francisco

Sat 15/11

16:40-17:00

2 stops16h 20m

£472

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

09:00-16:30

1 stop15h 30m

San Francisco

Mon 10/11

13:08-09:40

1 stop12h 32m

£474

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 5/12

09:00-16:30

1 stop15h 30m

San Francisco

Tue 9/12

16:15-13:30

1 stop13h 15m

£492

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 14/11

13:45-17:00

Nonstop11h 15m

San Francisco

Mon 24/11

16:15-13:30

1 stop13h 15m

£494

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 23 results
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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

How far ahead should I book a flight from London Heathrow Airport to Fremont?

Use this chart to determine the optimal time to book a return flight from Heathrow to Fremont. Price data was last updated on 17 October 2025.

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Fremont. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Fremont?

Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Fremont (average of £340). Flying from London Heathrow Airport to Fremont in July is currently the most expensive (average of £460). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 24 October 2025.

It’s typically best to fly out from London Heathrow Airport to Fremont in the evening. Doing so could potentially save you 35% on the flight price compared to flying at midday, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Fremont?

Use this chart to determine the cheapest time to fly return from Heathrow to Fremont. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Fremont flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from London Heathrow Airport 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 24 October 2025.
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
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Austrian Airlines
7.6
Good
863 reviews
Austrian Airlines
7.6
Good
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Virgin Atlantic
7.5
Good
670 reviews
Austrian Airlines
7.6
Good
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
United Airlines
7.4
Good
8,994 reviews
Austrian Airlines
7.6
Good
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
Lufthansa
6.8
Okay
7,518 reviews
Austrian Airlines
7.6
Good
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.
British Airways
6.7
Okay
7,469 reviews
Austrian Airlines
7.6
Good
863 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

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?

    Scandinavian Airlines and United Airlines can get you from London Heathrow Airport to Fremont in just under 15h 30m. Your travel time can differ by up to 25m. 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 British Airways, which is currently one of the cheapest options available, starting at £349. United Airlines flights start at £355 while deals on SWISS start at £358 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: Air New Zealand (87%), KLM (85%), Air France (85%).

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

    On average you can expect to pay £1,966 for a flight from London Heathrow Airport to Fremont. The cheapest flight overall is £338 while the most popular route, (London Heathrow - San Francisco) is currently priced at £355.

  • 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.

  • What is the cheapest month to book a flight from London Heathrow Airport to Fremont?

    Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Fremont (average of £340). Flying from London Heathrow Airport to Fremont in July is currently the most expensive (average of £460). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£239Average£496FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£338Average£497FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£340Average£557FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£353Average£565FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£355Average£500FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£358Average£523FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£360Average£480FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
SWISSCheapest£360Average£408FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Virgin AtlanticCheapest£375Average£532FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£375Average£460FlexibilityNo cancel feeOn-time75%
Search KLM 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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