Find Cheap Flights from London Heathrow to San Francisco (LHR - SFO)

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Good to Know

Low Season:
February
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
17%
expected price increase
Average Price:
$1530
(avg. price over the last 2 weeks)
Good Deal:
$893
or less (round trip)

When to Book Flights from London Heathrow to San Francisco

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $893 or less.
The cheapest flight from London Heathrow to San Francisco was found 79 days before departure, on average.
Book at least 5 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is February.
Morning departure is around 13% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to San Francisco Flights

How long does a flight from London Heathrow to San Francisco take?
An average nonstop flight takes 11h 05m, covering a distance of 5355 miles.
How many flights are there between London Heathrow and San Francisco?
There are 496 (nonstop) flights between London Heathrow and San Francisco per week, averaging 70 per day.
Which airlines provide the cheapest flights from London Heathrow to San Francisco?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($565), KLM ($598) and Virgin Atlantic ($600).
Do I need a passport to fly between London Heathrow and San Francisco?
Yes.
Which airlines fly most frequently between London Heathrow and San Francisco?
Air New Zealand (10 times daily), Delta (8 times daily), Virgin Atlantic (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly London Heathrow to San Francisco?
For London Heathrow to San Francisco, Saturday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from San Francisco back to London Heathrow, the best deals are generally found on Friday, with Thursday being the most expensive.

Book cheap flights from London Heathrow to San Francisco (round-trip)

Airports
Origin
London
$565
only
$565
Destination
San Francisco
$565
only
$565
Sat, Feb 3
LHR
SFO
28h 20m
Sun, Feb 11
SFO
LHR
15h 45m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 10
LHR
SFO
30h 15m
Sun, Feb 18
SFO
LHR
15h 15m
Trip: 9 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1488 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
AMS
ATL
Good 7.0

newer plane, good staff

need better and more food options, more often

DMM
AMS
Okay 4.0

OLD OLD plane with hard seats and tiny screens

JFK
AMS
Good 7.6

Two hours delay in the start.

JNB
AMS
Excellent 9.6

Comfort economy well worth the extra.

SVO
AMS
Okay 5.2

KLM can't seem to figure out the order of boarding the plane. Should be business - priority - everyone else. Instead they do priority first, and that's usually two-thirds of the passengers. Also, really tired of the fake business class on these flights...

Tue, Feb 13
LHR
SFO
11h 05m
Tue, Feb 27
SFO
LHR
15h 15m
Trip: 15 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 52 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.1
Food
7.8
LHR
SFO
Excellent 10.0

Amazing food and drinks, and to top it off we were served a frozen ice cream treat during our flight.

LHR
SFO
Excellent 10.0

Very comfortable and spacious seats, good air circulation and friendly crew.

Food and wine selections were limited and only mediocre. We flew economy plus.

LHR
SFO
Excellent 10.0

comfort, entertainment, food

nothing

LHR
SFO
Excellent 9.0

cabin was nice but cold

LHR
SFO
Okay 5.0

There are lots of relatively new movies to choose from.

The complimentary headset breaks easily. Tray table was broken and they can't fix it. Very small bathrooms, knees almost touch the door when sitting down. Food selection for dinner ran out quickly, resulting in only 2 choices and one is hot spicy, so basically only one choice. All beverages are given out in small cups, even water is given out in small cups increments (finish in one gulp), they don't even give out small bottles of water. No complimentary packet (eye shades, socks etc.) , not even a barf bag for collecting trash.

Fri, Feb 9
LHR
SFO
15h 15m
Mon, Feb 19
SFO
LHR
13h 55m
Trip: 11 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3750 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
DUB
LAX
Excellent 8.0

Crew was pleasant. Food was OK and service too. Boarding was fine.

The 4 hours wait before my connection, the extra security selection that got me all patted for the 2nd time.

DUB
LAX
Good 6.0

Crew was responsive and kind if something was requested but service without asking is no longer part of a transatlantic experience.

If you're on the Airbus transatlantic flight, the last section nis so noisy I'm surprised it's even a legal noise level. You can't even hear the entertainment it's so loud. Had to buy an upgraded economy just to be able to endure the long flight. It would be nice to see the cart come through again for coffee refill service.

BRU
DUB
Good 6.6

I loved that the trip was relatively short and uneventful. The food was adequate, but nothing to brag about and very little. The hostesses were nice,better than last time. The price was right on, mostly for a trip of under 15 hours...when usually it is 20h with a stopover.

On the way over, I couldnt get water. The trolley didn't come by, and I had to "leg-over" my sleeping neighbor to get a glass of water fo the back reserve. The TV wasn't working; the remote was dead. As it was a night flight, it didn't matter tt much for me, but it should've been working. The passengers could have been spread out better as there were completely empty middle rows. It would have helped with comfort.

LAX
DUB
Mediocre 2.6

The flight was very bare bones. Entertainment system froze up half way into a movie. You had to pay for wine with dinner. Even on budget carriers, wine is included with meals on the long hauls. Half a cup of water was served twice during the flight. The cabin was kept quite cold. I wore thick socks and slippers throughout the flight, but had to use the small blanket provided to keep my feet warm. Glad I had a heavy coat! I will avoid this carrier on any long hauls in the future.

Dinner not too good. Breakfast very poor. Cold flight. Entertainment not working. Avoid for long hauls.

DUB
BOS
Excellent 9.3

Crew and food were excellent. Very happy to accommodate my husbands health issue.

Choice of movies and tv shows limited and lacked variety.

Tue, Jan 23
LHR
SFO
13h 50m
Mon, Jan 29
SFO
LHR
13h 45m
Trip: 7 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 1 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

SAV
ATL
Good 7.0

The flight was on schedule

It was crowded and cramped.

SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

PTY
ATL
Excellent 9.6

Crew was kind, entertainment and food were good

Seats are really tight

JFK
DTW
Excellent 10.0

I got off the flight at out side,but i forgot to carried my small bag .and then the Crew returned me the bag very soon.they were very kind,thank you very much.

Wed, Feb 7
LHR
SFO
28h 20m
Wed, Feb 14
SFO
LHR
21h 50m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Jan 20
LHR
SFO
11h 05m
Tue, Jan 30
SFO
LHR
10h 10m
Trip: 11 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 52 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.1
Food
7.8
LHR
SFO
Excellent 10.0

Very comfortable and spacious seats, good air circulation and friendly crew.

Food and wine selections were limited and only mediocre. We flew economy plus.

LHR
SFO
Excellent 9.0

cabin was nice but cold

LHR
SFO
Okay 4.3

My video monitor didn't work so I couldn't watch movies, asked the crew twice to help and they never did. Then to top off a terrible 10 hour flight with no entertainment, my bag never made it. Worst experience ever

LHR
SFO
Excellent 10.0

comfort, entertainment, food

nothing

LHR
SFO
Okay 5.0

There are lots of relatively new movies to choose from.

The complimentary headset breaks easily. Tray table was broken and they can't fix it. Very small bathrooms, knees almost touch the door when sitting down. Food selection for dinner ran out quickly, resulting in only 2 choices and one is hot spicy, so basically only one choice. All beverages are given out in small cups, even water is given out in small cups increments (finish in one gulp), they don't even give out small bottles of water. No complimentary packet (eye shades, socks etc.) , not even a barf bag for collecting trash.

Tue, Jan 23
LHR
SFO
13h 50m
Sun, Feb 11
SFO
LHR
15h 20m
Trip: 20 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1488 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
DMM
AMS
Okay 4.0

OLD OLD plane with hard seats and tiny screens

SVO
AMS
Okay 5.2

KLM can't seem to figure out the order of boarding the plane. Should be business - priority - everyone else. Instead they do priority first, and that's usually two-thirds of the passengers. Also, really tired of the fake business class on these flights...

AMS
ATL
Good 7.0

newer plane, good staff

need better and more food options, more often

FCO
AMS
Excellent 10.0

Flight crew was pleasant and attentive. Seats were comfortable for economy as well. We were allowed to check in extra baggage for free at check in which really helped since we would be catching a connecting flight in Amsterdam

AMS
IAH
Good 7.3

Per usual, KLM can't seem to figure out the order of boarding the plane. Should be business - priority - everyone else. Instead they do priority first, and that's usually two-thirds of the passengers. Strange choice of in-flight movies; no accounting for taste, I guess.

Tue, Feb 13
LHR
SFO
15h 30m
Sat, Feb 24
SFO
LHR
13h 45m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Dec 17
LHR
SFO
14h 45m
Sat, Dec 30
SFO
LHR
19h 30m
Trip: 14 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3750 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
FRA
DUB
Good 6.3

Flight attendants were excellent.

DUB
ORD
Okay 4.3

Tight plane. Curry? Really? Couldn't get boarding pass for partner airline until I got to the airport. Never again! Amateurish airline. Directions from staff made us go through security again.

DUB
LAX
Excellent 8.0

Crew was pleasant. Food was OK and service too. Boarding was fine.

The 4 hours wait before my connection, the extra security selection that got me all patted for the 2nd time.

LAX
DUB
Mediocre 2.6

The flight was very bare bones. Entertainment system froze up half way into a movie. You had to pay for wine with dinner. Even on budget carriers, wine is included with meals on the long hauls. Half a cup of water was served twice during the flight. The cabin was kept quite cold. I wore thick socks and slippers throughout the flight, but had to use the small blanket provided to keep my feet warm. Glad I had a heavy coat! I will avoid this carrier on any long hauls in the future.

Dinner not too good. Breakfast very poor. Cold flight. Entertainment not working. Avoid for long hauls.

DUB
LAX
Okay 5.6

Flight attendants were excellent.

Food was so so. Entertainment selection was so so. Entertainment technology was substandard.

Thu, Jan 25
LHR
SFO
13h 50m
Fri, Feb 2
SFO
LHR
20h 05m
Trip: 9 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 1 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

OMA
ATL
Good 7.6

My comfort zone seat

JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

JFK
DTW
Excellent 10.0

I got off the flight at out side,but i forgot to carried my small bag .and then the Crew returned me the bag very soon.they were very kind,thank you very much.

SAV
ATL
Good 7.0

The flight was on schedule

It was crowded and cramped.

Thu, Jan 25
LHR
SFO
13h 50m
Sun, Feb 11
SFO
LHR
13h 35m
Trip: 18 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1488 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
DMM
AMS
Okay 4.0

OLD OLD plane with hard seats and tiny screens

AMS
IAH
Good 7.3

Per usual, KLM can't seem to figure out the order of boarding the plane. Should be business - priority - everyone else. Instead they do priority first, and that's usually two-thirds of the passengers. Strange choice of in-flight movies; no accounting for taste, I guess.

AMS
PRG
Excellent 10.0

Equally friendly crew and experience. It was complimented by the time we got to spend in the fantastic KLM lounge while we waited for the flight.

Nothing!

AMS
ATL
Good 7.0

newer plane, good staff

need better and more food options, more often

ATL
CLE
Okay 4.6

old plane, tight and uncomfortable

Fri, Feb 16
LHR
SFO
28h 20m
Thu, Feb 22
SFO
LHR
13h 10m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Nov 29
LHR
SFO
16h 45m
Wed, Dec 6
SFO
LHR
15h 15m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3750 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
BRU
DUB
Good 6.6

I loved that the trip was relatively short and uneventful. The food was adequate, but nothing to brag about and very little. The hostesses were nice,better than last time. The price was right on, mostly for a trip of under 15 hours...when usually it is 20h with a stopover.

On the way over, I couldnt get water. The trolley didn't come by, and I had to "leg-over" my sleeping neighbor to get a glass of water fo the back reserve. The TV wasn't working; the remote was dead. As it was a night flight, it didn't matter tt much for me, but it should've been working. The passengers could have been spread out better as there were completely empty middle rows. It would have helped with comfort.

LAX
DUB
Mediocre 2.6

The flight was very bare bones. Entertainment system froze up half way into a movie. You had to pay for wine with dinner. Even on budget carriers, wine is included with meals on the long hauls. Half a cup of water was served twice during the flight. The cabin was kept quite cold. I wore thick socks and slippers throughout the flight, but had to use the small blanket provided to keep my feet warm. Glad I had a heavy coat! I will avoid this carrier on any long hauls in the future.

Dinner not too good. Breakfast very poor. Cold flight. Entertainment not working. Avoid for long hauls.

DUB
FRA
Mediocre 3.3

It got me there.

Had to pay for sodas.

DUB
LAX
Excellent 8.0

Crew was pleasant. Food was OK and service too. Boarding was fine.

The 4 hours wait before my connection, the extra security selection that got me all patted for the 2nd time.

DUB
LAX
Good 6.0

Crew was responsive and kind if something was requested but service without asking is no longer part of a transatlantic experience.

If you're on the Airbus transatlantic flight, the last section nis so noisy I'm surprised it's even a legal noise level. You can't even hear the entertainment it's so loud. Had to buy an upgraded economy just to be able to endure the long flight. It would be nice to see the cart come through again for coffee refill service.

Sun, Jan 28
LHR
SFO
11h 05m
Thu, Feb 1
SFO
LHR
10h 15m
Trip: 5 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 52 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.1
Food
7.8
LHR
SFO
Excellent 8.0

NA

LHR
SFO
Excellent 9.0

cabin was nice but cold

LHR
SFO
Excellent 10.0

Virgin has the nicest staff, good food, and excellent movie options. I had a great time on my flight!

LHR
SFO
Okay 4.3

My video monitor didn't work so I couldn't watch movies, asked the crew twice to help and they never did. Then to top off a terrible 10 hour flight with no entertainment, my bag never made it. Worst experience ever

LHR
SFO
Mediocre 2.0

I was selected for additional screening at the gate. I have no problem with this at all. From the start I told them I am traveling with my fiancee. They tried to hold me back in a separate area after the screening and I once again told them my fiancee was waiting for me. One staff memeber walked with me half way back to get her and then disappeared. By the time I found her and came back, the staff memeber was no where to be found. Now we had lost are spot in the line and had to go to the back of the line. We spoke to 3 different staff people about what was going on and everyone said, oh the guy over there will help you. But no one did. The staff had No idea how to run a security check or handle paople. There was No working wifi! There was no tvs in the seats, only the old style in the aisle. The staff told me the plan was going to retire at the end of the month. The food was more for animals then for humans! We got updates by txt 10 mins before the staff updated the gate on our flight out from SFO. I have traveled all over the world with a lot of airlines and Never had such a poor service, but what is it to expect. It was United after all!

Refund of the whole flight.

Tue, Jan 30
LHR
SFO
13h 50m
Wed, Feb 7
SFO
LHR
13h 45m
Trip: 9 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 1 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
PHL
JFK
Excellent 9.0

We were probably in the air for 30 mins; great short flight. Plane wasn’t filled so had plenty of space.

JFK
DTW
Excellent 10.0

I got off the flight at out side,but i forgot to carried my small bag .and then the Crew returned me the bag very soon.they were very kind,thank you very much.

PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

SAV
ATL
Good 7.0

The flight was on schedule

It was crowded and cramped.

JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

Tue, Jan 30
LHR
SFO
13h 50m
Tue, Feb 6
SFO
LHR
15h 55m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1488 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
LHR
AMS
Good 7.6

I was pleasantly surprised they had a snack service on such a short flight. The flight attendants were very friendly

Amsterdam customs is the most disorganized I have ever seen. With the number of tourists entering the country you would think they would have done something about it. There were only 2 customs agents!! One for all passports and 1 for all passports. We were in the customs hall longer than we were in flight!

FCO
AMS
Excellent 10.0

Flight crew was pleasant and attentive. Seats were comfortable for economy as well. We were allowed to check in extra baggage for free at check in which really helped since we would be catching a connecting flight in Amsterdam

JFK
AMS
Good 7.6

Two hours delay in the start.

DMM
AMS
Okay 4.3

staff was fine

old old plane, very uncomfortable. Tiny bad screen made movies pointless

SFO
AMS
Excellent 10.0

From pre-boarding, to boarding, to the food, and the attentiveness, everything was top notch! The cleanliness of the plane was only topped by the friendliness of the crew.

The flight was marked at almost 11hrs but ended up being only 9...not a negative other than it meant not spending as much time on board!

Thu, Mar 1
LHR
SFO
15h 30m
Thu, Mar 22
SFO
LHR
22h 15m
Trip: 21 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Dec 18
LHR
SFO
15h 45m
Sun, Jan 14
SFO
LHR
13h 55m
Trip: 28 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3750 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
DUB
ORD
Okay 4.3

Tight plane. Curry? Really? Couldn't get boarding pass for partner airline until I got to the airport. Never again! Amateurish airline. Directions from staff made us go through security again.

FRA
DUB
Good 6.3

Flight attendants were excellent.

BRU
DUB
Excellent 10.0

Everything

DUB
LAX
Excellent 8.0

Crew was pleasant. Food was OK and service too. Boarding was fine.

The 4 hours wait before my connection, the extra security selection that got me all patted for the 2nd time.

JFK
DUB
Excellent 8.0

Good

Thu, Feb 1
LHR
SFO
13h 50m
Wed, Feb 7
SFO
LHR
13h 45m
Trip: 7 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 1 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
LAX
HNL
Okay 5.0

The gentleman at the gate was super helpful and helped us check our bags at the gate.

Zero leg room. Zero arm room. The entertainment system did not function. No food for such a long flight unless you pay more then the food is actually worth.

SEA
SJC
Okay 5.6

No vegetarian options in first class.. and go go wouldn5 hook up. Flight was an hour late...but that was ok.

The pilot did a nice job of flying in and banking so we could see the view..

SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

PHL
JFK
Excellent 9.0

We were probably in the air for 30 mins; great short flight. Plane wasn’t filled so had plenty of space.

PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.