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$384+ Cheap flights from Fremont, CA to Heathrow (LHR)

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
ene. 14 — ene. 211
mié. 1/14
mié. 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Fremont to London Heathrow are usually found in February or October, booked 63 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Fremont to Heathrow

Cheapest flights from Fremont to Heathrow
Explore the most affordable flight options available from Fremont to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:25 pmSFO - LHR
1 stop15h 50mSWISS
mar. 1/138:05 pmLHR - SFO
1 stop28h 25mSWISS
Deal found 12/14$596
This Gotogate deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/294:15 pmSFO - LHR
1 stop30h 15mMultiple Airlines
mar. 1/1311:10 amLHR - SFO
1 stop16h 25mMultiple Airlines
Deal found 12/15$597
This Flighttix deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2912:50 pmSFO - LHR
Nonstop10h 35mLufthansa
mar. 1/1311:10 amLHR - SFO
1 stop16h 25mLufthansa
Deal found 12/15$603
This Cheapflightsfares deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/304:10 pmSFO - LHR
1 stop13h 20mMultiple Airlines
sáb. 1/319:00 amLHR - SFO
1 stop15h 30mMultiple Airlines
Deal found 12/14$604
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/315:25 pmSFO - LHR
Nonstop10h 35mUnited Airlines
mar. 1/1311:10 amLHR - SFO
1 stop16h 25mUnited Airlines
Deal found 12/14$606
This Cheapflightsfares deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/304:10 pmSFO - LHR
1 stop13h 20mMultiple Airlines
mar. 2/37:00 amLHR - SFO
2 stops17h 30mMultiple Airlines
Deal found 12/14$607
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/2811:35 pmSFO - LHR
1 stop22h 20mUnited Airlines
jue. 2/59:00 amLHR - SFO
1 stop15h 30mUnited Airlines
Deal found 12/14$611
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/294:15 pmSFO - LHR
1 stop30h 15mUnited Airlines
mié. 2/411:10 amLHR - SFO
1 stop16h 25mUnited Airlines
Deal found 12/14$613
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2910:35 pmSFO - LHR
1 stop30h 55mUnited Airlines
jue. 1/2911:10 amLHR - SFO
1 stop15h 45mUnited Airlines
Deal found 12/14$616

Find flight deals from Fremont to Heathrow

Keep the following information in mind while searching for Fremont to Heathrow flight deals. Data was last updated diciembre 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$596
(Kiwi.com)

One-way from

$384
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$954
Provider with most accurate pricing for San Francisco-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-London (LON) flights.
Search Deals
From Fremont to London Heathrow
Search Deals
One-way flight from Fremont to London Heathrow
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($167 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Fremont to Heathrow 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 2,558,603 searches. Data last updated diciembre 15, 2025.
Use the filters below to find and compare flights from Fremont to London Heathrow Airport that are best for you.

Fly from

Fremont

Fly to

Heathrow

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

dom. 12/28

11:35 pm-5:55 am

1 stop22h 20m

London Heathrow

jue. 2/5

9:00 am-4:30 pm

1 stop15h 30m

$611

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mar. 3/17

6:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

mar. 3/24

11:10 am-8:35 pm

1 stop16h 25m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mié. 1/7

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

vie. 1/16

11:10 am-7:35 pm

1 stop16h 25m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mar. 3/3

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

dom. 3/8

11:10 am-8:35 pm

1 stop16h 25m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mié. 1/7

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

mié. 1/28

6:35 am-7:35 pm

1 stop21h 00m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mié. 2/25

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

lun. 3/2

9:00 am-4:30 pm

1 stop15h 30m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

sáb. 1/24

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

dom. 2/1

11:10 am-7:35 pm

1 stop16h 25m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

mié. 1/21

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

mié. 2/4

9:00 am-4:30 pm

1 stop15h 30m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

jue. 1/29

8:33 am-10:10 am

1 stop17h 37m

London Heathrow

jue. 2/5

6:35 am-2:50 pm

1 stop16h 15m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

jue. 3/12

6:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

lun. 3/23

7:40 am-8:35 pm

1 stop19h 55m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 24 results
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Best time to book a flight from Fremont to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Fremont with our price prediction graph.
Estimated round-trip 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 Fremont to London Heathrow Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Fremont to Heathrow. Price data was last updated on December 12, 2025.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Fremont to London Heathrow Airport. 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 Fremont to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from Fremont to London Heathrow Airport (average of $497). Flying from Fremont to London Heathrow Airport in June is currently the most expensive (average of $813). 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 FR8 to LHR?

Find hourly flight availability from Fremont to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 15, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 17% on flights from Fremont to London Heathrow Airport by exploring options for tickets in the evening.

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

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

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

Weekly flight availability from Fremont to London Heathrow Airport

Explore weekly flight availability from Fremont to Heathrow. 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 diciembre 15, 2025.

The most flights from FR8 to LHR are scheduled on a Tuesday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (25 on average).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated diciembre 15, 2025.
Read reviews from past customers who have flown Delta, Virgin Atlantic, and United Airlines from Fremont to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.5
Good
675 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,092 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
3,051 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,575 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    Airlines like United Airlines fly from Fremont to London Heathrow Airport in about 22h 20m. The time it takes to get you to your destination can typically vary by up to . There are 5350 mi between Fremont and London Heathrow Airport.

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

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $185. Aer Lingus flights start at $192 while deals on WestJet start at $206 one-way.

  • What are the most reliable airlines from Fremont to London Heathrow Airport?

    No one likes to see their flight delayed. When booking a flight from Fremont to London Heathrow Airport consider choosing American Airlines (90%), Aer Lingus (90%) or Alaska Airlines (90%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $313. While the most popular route (San Francisco - London Heathrow) can be booked for $423 on average, our data indicates $2,500 when flying from Fremont to London Heathrow Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Fremont to Heathrow 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 Fremont to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Fremont to London Heathrow Airport (average of $497). Flying from Fremont to London Heathrow Airport in June is currently the most expensive (average of $813). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Fremont to Heathrow

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Top 10 airlines flying from Fremont to Heathrow

Discover the top 10 airlines that operate flights from Fremont to Heathrow. 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 2,558,603 searches. Data last updated diciembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$151Average$826FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$364Average$580FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$371Average$558FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$494Average$655FlexibilityNo cancel feeOn-time75%
SWISSCheapest$513Average$703FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$535Average$759FlexibilityNo cancel feeOn-time70%
DeltaCheapest$541Average$792FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$567Average$826FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$568Average$846FlexibilityNo cancel feeOn-time72%
IberiaCheapest$572Average$673FlexibilityNo cancel feeOn-time77%

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