Which airline has the best punctuality record on San Francisco to London flights?

Over the past year, British Airways has had the lowest number of delays on this route, with just 9% of flights being delayed.

What is the most punctual flight time for San Francisco to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

How often are flights from San Francisco to London delayed?

About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 152 minutes.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

How long is the flight from San Francisco to London Heathrow Airport?

Departing from San Francisco to London Heathrow Airport will take you 15h 15m. The distance from San Francisco to London Heathrow Airport is about 8610 km.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most reliable airlines from San Francisco to London Heathrow Airport?

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 San Francisco to London Heathrow Airport on time: KLM (82%), SAUDIA (82%), Air France (82%).

What airport do you fly from for flights from San Francisco to London Heathrow?

San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to London Heathrow. You should not have trouble finding flights to London Heathrow from San Francisco; the airport handles an average of 17 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to London Heathrow. It is only a 17.7 km journey to San Francisco (SFO) from San Francisco’s city centre.

Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?

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

How can I find direct flights from San Francisco to Heathrow?

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

Can I find deals for business class flights from San Francisco to Heathrow?

Yes. Cheapflights offers flight deals from San Francisco 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.

C$ 515+ Cheap Flights from San Francisco to London Heathrow Airport

Cheap flight deals from San Francisco to Heathrow

Enter your travel dates to find the best prices.

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Direct

Last-minute

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Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Sat 28/114:45 p.m. -

2 stops44h 35m

Tue 1/127:30 p.m. -

1 stop27h 20m

Deal found 27/10C$ 1,029

Sun 29/114:45 p.m. -

2 stops44h 50m

Wed 2/126:05 p.m. -

2 stops52h 45m

Deal found 26/10C$ 1,035

Wed 9/124:45 p.m. -

2 stops56h 50m

Sun 13/126:40 a.m. -

1 stop16h 10m

Deal found 25/10C$ 1,045

Fri 4/124:45 p.m. -

2 stops32h 10m

Mon 7/126:40 a.m. -

1 stop16h 10m

Deal found 26/10C$ 1,053

Sun 29/114:45 p.m. -

2 stops20h 50m

Sat 5/126:40 a.m. -

1 stop16h 10m

Deal found 29/10C$ 1,086

Mon 16/114:45 p.m. -

2 stops20h 50m

Thu 19/116:40 a.m. -

1 stop16h 10m

Deal found 27/10C$ 1,088

Fri 27/114:45 p.m. -

2 stops32h 10m

Sun 13/126:40 a.m. -

1 stop16h 10m

Deal found 30/10C$ 1,089

Fri 27/114:45 p.m. -

2 stops32h 10m

Fri 4/126:40 p.m. -

1 stop28h 10m

Deal found 29/10C$ 1,091

Best flights from San Francisco to Heathrow
Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Thu 18/24:45 p.m. -

1 stop15h 15m

Thu 4/36:40 a.m. -

1 stop16h 10m

Deal found 29/10C$ 1,103

Tue 23/212:50 p.m. -

Nonstop10h 35m

Sat 6/310:05 a.m. -

Nonstop11h 15m

Deal found 29/10C$ 1,331

Thu 12/116:00 a.m. -

1 stop19h 30m

Sat 9/112:20 p.m. -

1 stop18h 29m

Deal found 28/10C$ 1,339

Tue 17/114:40 p.m. -

Nonstop10h 35m

Tue 24/119:00 a.m. -

1 stop15h 30m

Deal found 26/10C$ 1,364

Tue 29/126:10 a.m. -

1 stop20h 30m

Thu 7/16:30 a.m. -

2 stops21h 01m

Deal found 27/10C$ 1,380

Sun 11/44:45 p.m. -

2 stops18h 05m

Mon 19/49:05 p.m. -

2 stops25h 35m

Deal found 29/10C$ 1,105

Sat 16/14:45 p.m. -

1 stop16h 55m

Thu 20/510:35 a.m. -

2 stops36h 05m

Deal found 25/10C$ 1,140

Tue 15/122:45 p.m. -

1 stop13h 05m

Tue 22/126:35 a.m. -

1 stop21h 00m

Deal found 25/10C$ 1,350

Fri 19/24:45 p.m. -

2 stops32h 10m

Mon 1/310:20 a.m. -

2 stops20h 51m

Deal found 26/10C$ 1,201

Tue 8/122:59 p.m. -

2 stops19h 31m

Mon 14/126:40 a.m. -

2 stops26h 39m

Deal found 28/10C$ 1,264

Sun 28/34:45 p.m. -

2 stops18h 05m

Sun 11/49:05 p.m. -

2 stops25h 35m

Deal found 26/10C$ 1,275

Sun 29/114:45 p.m. -

2 stops18h 05m

Sat 5/126:40 a.m. -

2 stops24h 10m

Deal found 29/10C$ 1,367

Find flight deals from San Francisco to Heathrow

Round-trip from	C$ 1,029
One-way from	C$ 515
Popular in	June
Cheapest in	February
Average price	C$ 1,331

United Airlines
14/2-16/2
2 total stops
36h 50m total
San Francisco to London

Search Deals

JetBlue
13/12-31/12
1 total stop
15h 25m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (C$ 418 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 69 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Thu 1/4

10:35 a.m.-1:20 p.m.

1 stop18h 45m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 531

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Wed 17/2

6:30 a.m.-9:20 a.m.

2 stops18h 50m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 628

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Sun 13/12

9:58 a.m.-3:40 p.m.

2 stops21h 42m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 686

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Mon 14/12

11:32 p.m.-9:40 p.m.

1 stop14h 08m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 707

Quickest round-trip

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Sun 17/1

4:40 p.m.-10:55 a.m.

Nonstop10h 15m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 816

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Tue 1/12

4:40 p.m.-11:15 a.m.

Nonstop10h 35m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 816

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Thu 14/1

4:40 p.m.-10:55 a.m.

Nonstop10h 15m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 878

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Tue 17/11

4:40 p.m.-10:55 a.m.

Nonstop10h 15m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 885

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Tue 17/11

4:40 p.m.-10:55 a.m.

Nonstop10h 15m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 885

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Sun 8/11

4:40 p.m.-10:55 a.m.

Nonstop10h 15m

London Heathrow

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 885

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 24 resultsSorted by cheapest first

Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.

SFO-LHR

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 San Francisco to London Heathrow Airport

Prices

Delays

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

The price you pay for your flight from San Francisco to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of C$ 909). Flying from San Francisco to London Heathrow Airport in June is currently the most expensive (average of C$ 1,853). 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 SFO to LHR?

A simple way to save on the total cost of your ticket is to fly from San Francisco to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from San Francisco to London Heathrow Airport?

Airfare is typical for this route at the moment.

San Francisco to London Heathrow Airport flights typically cost between C$ 955 and C$ 1,503 in February.
The cheapest round-trip price found within the last 5 days was C$ 1,029 on United Airlines (14 Feb-16 Feb).

Related info for your journey

What airport do you fly from for flights from San Francisco to London Heathrow?
San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to London Heathrow. You should not have trouble finding flights to London Heathrow from San Francisco; the airport handles an average of 17 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to London Heathrow. It is only a 17.7 km journey to San Francisco (SFO) from San Francisco’s city centre.
How long is the flight from San Francisco to London Heathrow Airport?
Departing from San Francisco to London Heathrow Airport will take you 15h 15m. The distance from San Francisco to London Heathrow Airport is about 8610 km.
What are the most reliable airlines from San Francisco to London Heathrow Airport?
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 San Francisco to London Heathrow Airport on time: KLM (82%), SAUDIA (82%), Air France (82%).
Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?
Yes. In addition to deals on San Francisco to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Heathrow.
Can I find deals for business class flights from San Francisco to Heathrow?
Yes. Cheapflights offers flight deals from San Francisco 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 San Francisco to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of C$ 909). Flying from San Francisco to London Heathrow Airport in June is currently the most expensive (average of C$ 1,853). 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.

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How does Cheapflights help users find flights from San Francisco to Heathrow?

Cheapflights makes it easy to find San Francisco to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Heathrow?

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 Heathrow from San Francisco.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Heathrow, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on San Francisco to Heathrow 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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Cheap flights from San Francisco to London Heathrow Airport from C$ 515

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Francisco to Heathrow

Cheapest flights from San Francisco to HeathrowExplore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from San Francisco to HeathrowDiscover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from San Francisco to HeathrowExplore direct flight options from San Francisco to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from San Francisco to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from San Francisco to HeathrowDiscover last-minute flight deals from San Francisco to Heathrow. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Heathrow. Data last updated 30 October 2026 and is based on user searches.

One-way flights from San Francisco to HeathrowSearch for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from San Francisco to Heathrow

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Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.

Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.

Cheapflights Insights

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

The price you pay for your flight from San Francisco to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

A simple way to save on the total cost of your ticket is to fly from San Francisco to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from San Francisco to London Heathrow Airport?

Airfare is typical for this route at the moment.

San Francisco to London Heathrow Airport flights typically cost between C$ 955 and C$ 1,503 in February.The cheapest round-trip price found within the last 5 days was C$ 1,029 on United Airlines (14 Feb-16 Feb).

How often are flights from San Francisco to London delayed?

About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 152 minutes.

What is the most punctual flight time for San Francisco to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to London flights?

Over the past year, British Airways has had the lowest number of delays on this route, with just 9% of flights being delayed.

Related info for your journey

What airport do you fly from for flights from San Francisco to London Heathrow?

How long is the flight from San Francisco to London Heathrow Airport?

What are the most reliable airlines from San Francisco to London Heathrow Airport?

Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?

How can I find direct flights from San Francisco to Heathrow?

Can I find deals for business class flights from San Francisco to Heathrow?

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.

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Book a non-stop flight to one of these other cities located in England.

Search flights from San Francisco to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.

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How does Cheapflights help users find flights from San Francisco to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Heathrow?

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

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

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Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from San Francisco to Heathrow
Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from San Francisco to Heathrow
Explore direct flight options from San Francisco to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from San Francisco to Heathrow
Discover last-minute flight deals from San Francisco to Heathrow. Data last updated 30 October 2026 and is based on user searches.

One-way flights from San Francisco to Heathrow
Search for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

San Francisco to London Heathrow Airport flights typically cost between C$ 955 and C$ 1,503 in February.
The cheapest round-trip price found within the last 5 days was C$ 1,029 on United Airlines (14 Feb-16 Feb).