How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 141 minutes.

What’s the top layover airport for flights from London Heathrow Airport to San Francisco?

Lisbon (LIS) – chosen by Cheapflights users on 60% of 1-stop itineraries from London Heathrow Airport to San Francisco on Cheapflights.

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

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

What’s the fastest layover option from London Heathrow Airport to San Francisco?

Flights via Copenhagen (CPH) have the shortest average one-way travel time for 1-stop routes: 16h 30m.

What’s the cheapest layover airport for flights from London Heathrow Airport to San Francisco?

Copenhagen (CPH) is the most affordable 1-stop option, with an average round-trip price of $520.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to San Francisco?

Flights via Lisbon (LIS) offer the fastest connection on this route, with an average layover time of 1h 54m.

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

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

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

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

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

A quick flight from London Heathrow Airport to San Francisco can take about 17h 15m. Scandinavian Airlines provides one of the quickest options available for as low as $637. The distance between London Heathrow Airport and San Francisco is about 5350 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from London Heathrow Airport to San Francisco round-trip?

According to our current data, TAP AIR PORTUGAL ($449), Aer Lingus ($492), and British Airways ($515) offers the cheapest pricing from London Heathrow Airport to San Francisco. TAP AIR PORTUGAL is priced at 34% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from London Heathrow Airport to San Francisco one-way?

To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at $358. TAP AIR PORTUGAL flights start at $370 while deals on WestJet start at $418 one-way.

Weekly flight availability from London Heathrow Airport to San Francisco

The most flights from LHR to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 on average).

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the cheapest flights from London Heathrow Airport to San Francisco?

While on average a flight from London Heathrow Airport to San Francisco is generally $1,392, our data shows the cheapest flight currently is $457. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $416 for that flight.

What are the most popular airlines that fly from London Heathrow Airport to San Francisco?

British Airways, United Airlines and Lufthansa are the most popular airlines when flying from London Heathrow Airport to San Francisco.

Most accurate provider : When it comes to deals on London Heathrow Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London Heathrow Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from London Heathrow. Booking flights from London Heathrow to San Francisco (SFO) should be relatively easy as there are 29 daily inbound flights from London Heathrow from 12 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Heathrow to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$492+ Flights from London Heathrow Airport to San Francisco

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

Airfare is below average for this route at the moment. London Heathrow Airport to San Francisco flights typically cost between $626 and $940 in January. The cheapest round-trip price found within the last 3 days was $614 on British Airways (Jan 12-Feb 28).

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Find cheap flights from Heathrow to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or September, booked 45 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to San Francisco

Cheapest flights from Heathrow to San Francisco
Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2025.

Wed 12/3111:55 amLHR - SFO

1 stop15h 51mFinnair

Mon 1/128:40 pmSFO - LHR

Nonstop10h 30mFinnair

Deal found 12/22

$633

Sat 12/2710:05 amLHR - SFO

Nonstop11h 15mBrussels Airlines

Wed 12/318:25 amSFO - LHR

1 stop13h 30mBrussels Airlines

Deal found 12/21

$649

Thu 12/257:55 pmLHR - SFO

1 stop28h 10mTAP AIR PORTUGAL

Sat 1/104:35 pmSFO - LHR

1 stop18h 20mTAP AIR PORTUGAL

Deal found 12/22

$652

Sat 12/271:45 pmLHR - SFO

Nonstop11h 15mAustrian Airlines

Thu 1/18:20 amSFO - LHR

1 stop14h 20mAustrian Airlines

Deal found 12/21

$654

Fri 12/261:45 pmLHR - SFO

Nonstop11h 15mAustrian Airlines

Thu 1/18:20 amSFO - LHR

1 stop14h 20mAustrian Airlines

Deal found 12/21

$659

Fri 12/266:00 amLHR - SFO

1 stop18h 05mTAP AIR PORTUGAL

Mon 1/124:35 pmSFO - LHR

1 stop16h 55mTAP AIR PORTUGAL

Deal found 12/22

$662

Fri 12/266:00 amLHR - SFO

1 stop18h 05mTAP AIR PORTUGAL

Sat 1/104:35 pmSFO - LHR

1 stop16h 55mTAP AIR PORTUGAL

Deal found 12/21

$663

Wed 12/245:00 pmLHR - SFO

1 stop29h 35mScandinavian Airlines

Mon 1/124:40 pmSFO - LHR

1 stop17h 50mScandinavian Airlines

Deal found 12/23

$668

Thu 12/254:30 pmLHR - SFO

1 stop31h 35mTAP AIR PORTUGAL

Wed 12/314:35 pmSFO - LHR

1 stop34h 50mTAP AIR PORTUGAL

Deal found 12/23

$669

Sat 12/271:45 pmLHR - SFO

Nonstop11h 15mLufthansa

Thu 1/112:50 pmSFO - LHR

Nonstop10h 35mLufthansa

Deal found 12/21

$672

Best flights from Heathrow to San Francisco
Discover carefully curated flight deals from Heathrow to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 24, 2025.

Fri 1/163:35 pmLHR - SFO

2 stops31h 00mScandinavian Airlines

Mon 2/234:40 pmSFO - LHR

1 stop15h 20mScandinavian Airlines

Deal found 12/23

$616

Wed 5/207:00 amLHR - SFO

2 stops17h 15mSWISS

Mon 6/12:20 pmSFO - LHR

2 stops18h 15mSWISS

Deal found 12/21

$637

Sun 5/244:55 pmLHR - SFO

1 stop36h 07mFinnair

Sun 5/311:21 pmSFO - LHR

2 stops32h 54mFinnair

Deal found 12/21

$653

Wed 5/206:30 amLHR - SFO

1 stop13h 15mDelta

Wed 6/311:15 pmSFO - LHR

Nonstop10h 15mDelta

Deal found 12/21

$662

Sat 2/145:30 pmLHR - SFO

2 stops29h 05mScandinavian Airlines

Sat 2/214:40 pmSFO - LHR

2 stops18h 10mScandinavian Airlines

Deal found 12/23

$629

Thu 5/217:00 amLHR - SFO

2 stops17h 35mSWISS

Tue 5/262:40 pmSFO - LHR

2 stops19h 10mSWISS

Deal found 12/22

$644

Mon 4/137:50 pmLHR - SFO

2 stops26h 50mScandinavian Airlines

Sun 4/194:45 pmSFO - LHR

1 stop16h 55mScandinavian Airlines

Deal found 12/21

$638

Wed 3/117:00 amLHR - SFO

2 stops17h 30mSWISS

Wed 3/188:25 pmSFO - LHR

1 stop14h 25mSWISS

Deal found 12/22

$657

Mon 4/137:50 pmLHR - SFO

2 stops26h 50mScandinavian Airlines

Mon 4/274:45 pmSFO - LHR

2 stops18h 05mScandinavian Airlines

Deal found 12/22

$641

Mon 1/192:25 pmLHR - SFO

2 stops58h 05mSWISS

Mon 2/27:25 pmSFO - LHR

1 stop14h 25mSWISS

Deal found 12/20

$665

Sun 4/1210:20 amLHR - SFO

1 stop36h 20mScandinavian Airlines

Tue 4/214:45 pmSFO - LHR

1 stop20h 55mScandinavian Airlines

Deal found 12/22

$647

Last-minute flights from Heathrow to San Francisco
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated December 24, 2025 and is based on user searches.

Wed 12/3111:55 amLHR - SFO

1 stop15h 51mFinnair

Mon 1/128:40 pmSFO - LHR

Nonstop10h 30mFinnair

Deal found 12/22

$633

Thu 1/84:20 pmLHR - SFO

1 stop17h 10mLufthansa

Thu 1/156:50 pmSFO - LHR

2 stops18h 10mLufthansa

Deal found 12/22

$617

Sun 1/117:45 amLHR - SFO

1 stop33h 55mJetBlue

Sat 1/178:29 pmSFO - LHR

1 stop26h 26mJetBlue

Deal found 12/21

$637

Mon 1/123:35 pmLHR - SFO

1 stop26h 09mBritish Airways

Sat 2/2811:59 pmSFO - LHR

1 stop24h 36mBritish Airways

Deal found 12/23

$614

Tue 1/135:30 pmLHR - SFO

2 stops53h 05mScandinavian Airlines

Fri 2/274:40 pmSFO - LHR

1 stop15h 20mScandinavian Airlines

Deal found 12/23

$616

Tue 1/137:50 pmLHR - SFO

2 stops50h 45mScandinavian Airlines

Fri 1/164:40 pmSFO - LHR

1 stop15h 20mScandinavian Airlines

Deal found 12/21

$634

Tue 1/137:50 pmLHR - SFO

2 stops50h 45mScandinavian Airlines

Sat 2/284:40 pmSFO - LHR

1 stop15h 20mScandinavian Airlines

Deal found 12/23

$636

Thu 1/153:35 pmLHR - SFO

2 stops31h 00mScandinavian Airlines

Mon 1/194:40 pmSFO - LHR

2 stops18h 10mScandinavian Airlines

Deal found 12/22

$618

Sun 1/189:05 pmLHR - SFO

2 stops25h 30mScandinavian Airlines

Fri 1/234:40 pmSFO - LHR

2 stops32h 15mScandinavian Airlines

Deal found 12/23

$635

Mon 1/196:00 amLHR - SFO

1 stop16h 35mTAP AIR PORTUGAL

Fri 1/237:10 pmSFO - LHR

1 stop18h 25mTAP AIR PORTUGAL

Deal found 12/23

$629

Sat 1/248:50 amLHR - SFO

1 stop14h 45mBritish Airways

Wed 4/81:24 pmSFO - LHR

1 stop13h 06mBritish Airways

Deal found 12/22

$619

One-way flights from Heathrow to San Francisco
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated December 24, 2025.

Wed 1/282:50 pmLHR - SFO

3 stops29h 30mMultiple Airlines

Deal found 12/22

$492

Wed 3/257:00 amLHR - SFO

2 stops17h 30mSWISS

Deal found 12/21

$493

Sat 2/2111:50 amLHR - SFO

1 stop14h 52mBritish Airways

Deal found 12/23

$494

Thu 3/268:50 pmLHR - SFO

2 stops27h 15mMultiple Airlines

Deal found 12/23

$495

Sat 1/311:45 pmLHR - SFO

Nonstop11h 15mLufthansa

Deal found 12/22

$496

Fri 5/86:30 amLHR - SFO

1 stop14h 10mUnited Airlines

Deal found 12/22

$497

Wed 3/251:45 pmLHR - SFO

Nonstop11h 15mLufthansa

Deal found 12/21

$498

Sun 3/16:50 amLHR - SFO

2 stops20h 45mBrussels Airlines

Deal found 12/23

$499

Thu 4/237:00 amLHR - SFO

2 stops17h 15mSWISS

Deal found 12/21

$500

Thu 2/196:40 amLHR - SFO

3 stops22h 04mMultiple Airlines

Deal found 12/23

$501

Tue 3/3110:45 amLHR - SFO

Nonstop11h 05mBritish Airways

Deal found 12/23

$502

Wed 3/256:40 amLHR - SFO

3 stops41h 03mMultiple Airlines

Deal found 12/21

$504

Find flight deals from Heathrow to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$614 (British Airways)
One-way from	$492 (Mytrip)
Popular in	December
Cheapest in	February
Average price	$878
Good round-trip deal	$750 or less
Good one-way deal	$520 or less

Provider with most accurate pricing for London Heathrow-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for London Heathrow-San Francisco flights.

Search Deals

From London Heathrow to San Francisco

Search Deals

One-way flight from London Heathrow to San Francisco

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($29 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from London Heathrow to San Francisco.

Search Deals

Price to beat on a one-way flight from London Heathrow to San Francisco.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 1/16

3:35 pm-2:35 pm

2 stops31h 00m

San Francisco

Mon 2/23

4:40 pm-4:00 pm

1 stop15h 20m

$616

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 2/14

5:30 pm-2:35 pm

2 stops29h 05m

San Francisco

Sat 2/21

4:40 pm-6:50 pm

2 stops18h 10m

$629

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/20

7:00 am-4:15 pm

2 stops17h 15m

San Francisco

Mon 6/1

2:20 pm-4:35 pm

2 stops18h 15m

$637

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/13

7:50 pm-2:40 pm

2 stops26h 50m

San Francisco

Sun 4/19

4:45 pm-5:40 pm

1 stop16h 55m

$638

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/13

7:50 pm-2:40 pm

2 stops26h 50m

San Francisco

Mon 4/27

4:45 pm-6:50 pm

2 stops18h 05m

$641

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 5/21

7:00 am-4:35 pm

2 stops17h 35m

San Francisco

Tue 5/26

2:40 pm-5:50 pm

2 stops19h 10m

$644

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 4/12

10:20 am-2:40 pm

1 stop36h 20m

San Francisco

Tue 4/21

4:45 pm-9:40 pm

1 stop20h 55m

$647

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 5/24

4:55 pm-9:02 pm

1 stop36h 07m

San Francisco

Sun 5/31

1:21 pm-6:15 am

2 stops32h 54m

$653

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/11

7:00 am-5:30 pm

2 stops17h 30m

San Francisco

Wed 3/18

8:25 pm-5:50 pm

1 stop14h 25m

$657

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Wed 6/3

11:15 pm-5:30 pm

Nonstop10h 15m

$662

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 21 results

Compare providers for flights from Heathrow to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to San Francisco in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Thrive Travel	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London Heathrow Airport-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London Heathrow Airport-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Heathrow 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 London Heathrow Airport to San Francisco

Prices

Airlines

Delays

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

The price you pay for your flight from London Heathrow Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 45 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 London Heathrow Airport to San Francisco?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of $475). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of $604). 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 SFO?

When flying from London Heathrow Airport to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 4% versus a flight in the afternoon.

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

The best insider tips for London Heathrow Airport to San Francisco flights

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to San Francisco trip

Airlines

British Airways

BA's Club Suite offers private pods with a door for enhanced privacy on long-haul flights.

BA's World Traveller Plus offers extra seat width and legroom, ideal for long-haul comfort.

United Airlines

United's Polaris Business Class offers lie-flat seats and Saks Fifth Avenue bedding.

United's Premium Plus offers upgraded comfort with extra legroom and priority check-in.

Lufthansa

Lufthansa's Allegris cabins enhance comfort with adjustable headrests and slim seat design.

Lufthansa's Sleeper's Row offers extra space with a mattress and blanket for long-haul flights.

Virgin Atlantic

Virgin's Upper Class features lie-flat beds and a four-course meal for a VIP experience.

Virgin's Economy Delight offers extra legroom and priority boarding for enhanced comfort.

Airports

LHR

For a smooth departure from Heathrow, use the Heathrow Express for quick access to central London. It's the fastest way to reach the airport.

SFO

Upon arrival at SFO, use BART for an affordable trip to downtown San Francisco. The journey takes about 40 minutes.

Our travel experts

Gabriel Leigh

Expert on British Airways

Harriet Baskas

Expert on United Airlines and SFO

Blane Bachelor

Expert on Lufthansa and Virgin Atlantic

Ramsey Qubein

Expert on LHR

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Virgin Atlantic, United Airlines, and Iberia from London Heathrow Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Virgin Atlantic

7.5

Good

677 reviews

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

United Airlines

7.4

Good

9,111 reviews

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Iberia

7.0

Good

3,057 reviews

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Lufthansa

6.8

Okay

7,652 reviews

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

British Airways

6.7

Okay

7,609 reviews

Virgin Atlantic

7.5

Good

677 reviews

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Related info for your journey

What airport do you fly into for flights to San Francisco from London Heathrow?
Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from London Heathrow. Booking flights from London Heathrow to San Francisco (SFO) should be relatively easy as there are 29 daily inbound flights from London Heathrow from 12 different airlines.
How long is the flight from London Heathrow Airport to San Francisco?
A quick flight from London Heathrow Airport to San Francisco can take about 17h 15m. Scandinavian Airlines provides one of the quickest options available for as low as $637. The distance between London Heathrow Airport and San Francisco is about 5350 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to San Francisco round-trip?
According to our current data, TAP AIR PORTUGAL ($449), Aer Lingus ($492), and British Airways ($515) offers the cheapest pricing from London Heathrow Airport to San Francisco. TAP AIR PORTUGAL is priced at 34% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to San Francisco one-way?
To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at $358. TAP AIR PORTUGAL flights start at $370 while deals on WestJet start at $418 one-way.
What are the most reliable airlines from London Heathrow Airport to San Francisco?
The top 3 most reliable airlines when flying from London Heathrow Airport to San Francisco are Air New Zealand (88%), Air France (86%) and Delta (86%).
What are the cheapest flights from London Heathrow Airport to San Francisco?
While on average a flight from London Heathrow Airport to San Francisco is generally $1,392, our data shows the cheapest flight currently is $457. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $416 for that flight.
Can I find deals for flights from Heathrow to San Francisco that include hotel bookings?
Yes. In addition to deals on Heathrow to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Heathrow to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to San Francisco.
Can I find deals for business class flights from Heathrow to San Francisco?
Yes. Cheapflights offers flight deals from Heathrow to San Francisco 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 San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of $475). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of $604). 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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Top 10 airlines flying from Heathrow to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$449	Average$494	FlexibilityNo cancel fee	On-timeN/A
Aer Lingus	Cheapest$492	Average$760	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$516	Average$664	FlexibilityNo cancel fee	On-time70%
Scandinavian Airlines	Cheapest$520	Average$823	FlexibilityNo cancel fee	On-time77%
Brussels Airlines	Cheapest$530	Average$703	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$534	Average$681	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$542	Average$666	FlexibilityNo cancel fee	On-time76%
Virgin Atlantic	Cheapest$550	Average$736	FlexibilityNo cancel fee	On-time72%
Delta	Cheapest$555	Average$708	FlexibilityNo cancel fee	On-timeN/A
Austrian Airlines	Cheapest$567	Average$720	FlexibilityNo cancel fee	On-time78%

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$492+ Cheap flights from Heathrow (LHR) to San Francisco (SFO)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or September, booked 45 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to San Francisco

Cheapest flights from Heathrow to San FranciscoExplore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2025.

Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2025.

Find flight deals from Heathrow to San Francisco

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Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to San Francisco in December.

Best time to book a flight from Heathrow to San Francisco

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to San Francisco

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

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

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

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

Weekly flight availability from London Heathrow Airport to San Francisco

How often are flights from London to San Francisco delayed?

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

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

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

What’s the top layover airport for flights from London Heathrow Airport to San Francisco?

What’s the cheapest layover airport for flights from London Heathrow Airport to San Francisco?

What’s the fastest layover option from London Heathrow Airport to San Francisco?

Which airport typically offers the quickest layover for flights from London Heathrow Airport to San Francisco?

The best insider tips for London Heathrow Airport to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to San Francisco trip

Airlines

British Airways

United Airlines

Lufthansa

Virgin Atlantic

Airports

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SFO

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Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Virgin Atlantic, United Airlines, and Iberia from London Heathrow Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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What are the cheapest airlines flying from London Heathrow Airport to San Francisco round-trip?

What are the cheapest airlines to fly from London Heathrow Airport to San Francisco one-way?

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

What are the cheapest flights from London Heathrow Airport to San Francisco?

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

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

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

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

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Alternative routes for Heathrow to San Francisco

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Top 10 airlines flying from Heathrow to San Francisco

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Cheapest flights from Heathrow to San Francisco
Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2025.