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

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Sat 21/10
Sat 28/10
Any month
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Good to know

Low season:
October
Best time to beat the crowds
3%
expected price decrease
High season:
July
Most popular time to fly
11%
expected price increase
Average price:
£824
(avg. price over the last 72 hours)
Good deal:
£719
or less return trip within
6 months
of travel is a good deal

When to Book Flights from London to San Francisco

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

Top tips for Finding a Cheap Flight

The cheapest flight from London to San Francisco was found, on average, 47 days before departure.
Book at least 3 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 October.
Morning departure is around 1% cheaper 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 to San Francisco Flights

How long does a flight from London to San Francisco take?
An average non-stop flight takes 11h 05m, covering a distance of 5362 miles.
How many flights are there between London and San Francisco?
There are 610 (non-stop) flights between London and San Francisco per week, averaging 87 per day.
Which airlines provide the cheapest flights from London to San Francisco?
In the past 3 days, the cheapest return tickets were found on WOW air (£300), Multiple Airlines (£360) and Lufthansa (£382).
Do I need a passport to fly between London and San Francisco?
Yes.
Which airlines fly most frequently between London and San Francisco?
Air New Zealand (11 times daily), Delta (7 times daily), Virgin Atlantic (7 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly from London to San Francisco?
For London to San Francisco, Friday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from San Francisco back to London, the best deals are generally found on Wednesday, with Sunday being the most expensive.

Book cheap flights from London to San Francisco (return)

Airports
Origin
London
£360
only
£360
£413
only
£413
£404
only
£404
£300
only
£300
£382
only
£382
Destination
San Francisco
£300
only
£300
Fri, 1 Dec
LGW
SFO
14h 25m
Tue, 5 Dec
SFO
LGW
13h 55m
£300
Trip: 5 days
Overall 5.8 OK
Based on 923 reviews
Overall
6.1
Boarding
6.4
Comfort
5.7
Crew
7.1
Entertainment
4.1
Food
4.7
BOS
KEF
OK 4.6

Delayed/Missed Checked-In Baggage

PIT
KEF
Good 7.0

Extremely polite and professional staff who spoke English perfectly. Very impressive. And the flights were all on time, which was very much appreciated.

Wish we could have had access to movies. Even if we had to pay to watch them. Overseas flights are too long for no in flight entertainment.

BOS
KEF
OK 5.0

Having to pay an extra $200 for a normal amount of suitcases. 2 fliers with 1@ carry on and 1@ checked bag. WOW, alright. :( And not even a drink of water.

KEF
FRA
OK 4.6

Delayed/Missed Checked-In Baggage

YYZ
KEF
OK 4.0

Way overpriced for a budget airline for everything. It is no Ryanair!

Mon, 22 Jan
LTN
SFO
17h 35m
Thu, 25 Jan
SFO
LTN
19h 15m
£360
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Sat, 3 Feb
STN
SFO
19h 15m
Sat, 10 Feb
SFO
STN
19h 10m
£382
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16220 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
BUD
MUC
Excellent 10.0

Agents in the airport helped us avoid long passport lines in order to board connecting flight by putting us forward to front of lines. Otherwise we would have missed connecting flight.

Nothng

DEN
MUC
Excellent 9.3

The best in-flight service I have ever had on the Lufthansa flight from Denver to Munic!

MUC
BUD
Excellent 10.0

Courtesy

SEA
FRA
Excellent 10.0

service, care for my 85 pound dog and his kennel while traveling halfway across the globe! Thank you! Flight was smooth, services on board excellent.

SFO
FRA
OK 4.3

there was a couple nice flight attendants.

They still used old crappy screens that you couldn't see very well with any glare from windows. The movie selection was not great, not many good newer choices, lots of old movies/shows they probably got for super cheep or free. The food wasn't great at all. I've had much better elsewhere. They cut corners there too, not impressed.

Sat, 3 Feb
LCY
SFO
14h 20m
Sat, 10 Feb
SFO
LCY
14h 00m
£404
Trip: 8 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 5274 reviews
Overall
8.3
Boarding
8.3
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
8.0
ZRH
SFO
Excellent 9.3

The crew fed us well throughout the flight--and we got free wine with dinner. The food was pretty good for airplane food. We got fresh dinner rolls, salad, dessert, and Swiss cheese. We got ice cream part way through the trip. I loved that we got a piece of Swiss chocolate on each leg of the journey. The crew was friendly. There was a screen at each seat where you could watch movies or TV, listen to music, or track your flight. The entertainment was free, and the crew provided free earphones. Blankets and pillows were provided.

Like most planes, there was not enough leg room. It makes it pretty uncomfortable for an 11-1/2 hour flight. The boarding was a little confusing, but no serious issues.

ATH
ZRH
Good 6.6

Crew was attentive and friendly

Very disorganized boarding.

BOS
ZRH
Excellent 8.0

Kindness, courtesy and smiles

nothing in particular

ORD
ZRH
Excellent 10.0

Great service and friendly staff! Also great food!

There's nothing I didn't like :)

BCN
ZRH
Excellent 9.6

The boarding process was smooth. The crew was friendly and attentive. Even though it was a short flight, we each got a piece of Swiss chocolate.

Like most planes, there was not enough leg room.

Tue, 20 Feb
LHR
SFO
28h 36m
Tue, 27 Feb
SFO
LHR
15h 30m
£413
Trip: 8 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 19287 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.4
DUB
YYZ
Good 6.6

Reasonable food

One suitcase did not arrive. Not sure when will arrive

YUL
ATH
OK 5.3

No movies to watch, they told us to download their app and we would be able to watch movies. Tried to download the app on my phone without success, then tired to download the app on my laptop, again no luck. The staff had no clue how to help me, really old plane.

YVR
SFO
Good 6.0

The flight was delayed.

YVR
PDX
Excellent 8.5

A short flight on a small plane.Smooth flight, smooth, smooth landing. Although the flight was delayed, the passengers were kept informed as to where the plane was and the expected time of departure.

FRA
YUL
Excellent 8.0

Movie selection

Everything was ok

Sun, 21 Jan
LHR
SFO
11h 05m
Wed, 31 Jan
SFO
LHR
24h 05m
£438
Trip: 11 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 50 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
SFO
Mediocre 3.0

I did not get the requested meal. I had requested Asian Veg meal. I had reconfirmed that Virgin Atlantic Kiosk at Heathrow airport as well. In flight when I asked cabin crew they said they didn't get any request. I was hungry whole flight. Very bad experience.

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
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 9.0

Fast check in Fast security line Upper Class Clubhouse Fast boarding Excellent onboard service Great crew

Old entertainment system Although the seats can be turned into a bed they don't fully recline

LHR
SFO
OK 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

Sat, 10 Feb
LHR
SFO
11h 05m
Sat, 17 Feb
SFO
LHR
10h 30m
£439
Trip: 8 days
6.0GoodShow reviews
Overall 6.0 Good
Based on 7 reviews
Overall
8.2
Boarding
8.2
Comfort
8.0
Crew
8.5
Entertainment
7.4
Food
7.6
VIE
JFK
Good 6.3

Make sure your carry on luggage is less then 8 kg. Or you would have to check it at your own cost. The food is OK but the portion is very small. If you want a window or isle seat, it would’ve cost you 30 euro to reserve it. The crew is very nice. I guess because the air fare is very cheap, they need to do everything to make the extra cash.

JFK
VIE
Excellent 9.3

I can not afford first class tickets...

BEG
VIE
Good 6.0

Wonderful flight attendant. (I think his name was Stephen?)

Plane took off and landed late.. Few amenities near the gate. Odd procedure to have everyone go through security into waiting area.

LHR
SFO
Good 6.6

So there ended up being issues with my inbound flight. It was very complicated and I had to wait in line at Heathrow airport for 45 min. I'm glad I arrived extra early. The service rep. was very nice and professional, but the system needs some improvements.

VIE
BRU
Excellent 10.0

Very organized airline. Friendly staff.

Sat, 10 Feb
LHR
SFO
11h 05m
Thu, 15 Feb
SFO
LHR
10h 30m
£440
Trip: 6 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.6
Entertainment
6.5
Food
6.4
YYZ
BRU
Good 6.0

Even after meal request few days back, no veg meal available for this long journey

BRU
JFK
Excellent 8.0

They tried and succeeded in making flying as enjoyable and comfortable as it can be these days in economy class. Plenty of legroom. I would absolutely fly with them again.

Really, really bad food. Also, the selection of movies could have been better. Most of the foreign films did not have English subtitles.

BRU
NCE
Mediocre 2.0

No service - not even a glass of water!

BRU
TLV
Mediocre 2.6

Very uncomfortable, no refreshments. Everyone on the flight was suprised to find that food and drink cost money. The entire flight, the crew was selling something and you could not pass in aisle or even use toilet for half the fight. No entertainmrnt on a flight of 4.5 hrs and this was not supposed to be a low cost flight.

BRU
FLR
OK 4.0

I was not allowed to get on board even though the plane was sitting at the airport still and it was the airlines delay that I made me late.

Fri, 9 Feb
LCY
SFO
30h 45m
Sun, 18 Feb
SFO
LCY
18h 05m
£451
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 1379 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
TSF
JFK
Excellent 10.0

Of the multiple international airlines I recently flew with, I would have to say KLM was by far the best. Relaxing atmosphere, comfortable seating, great in-flight entertainment, although I have the go-go in-flight data/entertainment plan with t-mobile (highly recommended), the flight included a decent selection of movies, television programs, etc. The food far exceeded typical "airline quality," even for an international flight - and included a fabulous little snack box with locally sourced gourmet and specialty items such as chocolate from Belgium, fine cheeses from France, and crackers from England. Drinks = gratis, and crew was exceptionally attentive and went out of their way to make flight as pleasant as possible.

Nothing.

JRO
DAR
Good 6.3

The pilot kept us informed periodically during our journey. I liked that we could choose our seating online. The entertainment was good.

The plane was dirty, all seats did not have pillows and blankets. Seating was not very comfortable, particularly as there was a box attached to one of the legs of the seat in front of me, making it necessary to move my legs to an uncomfortable angle.

SFO
AMS
Excellent 10.0

Great crew service. Among the best ever.

FLR
AMS
Good 6.0

Airline staff good and professional

Nothing one can do, for a 6.2" guy, the metal bar that forms the shape for the pouch for magazines and such digs into knees, ESP if person in front adjusts seat back. Fold out table barely accommodates laptop.

AMS
FAO
OK 4.0

Not only was there free food but they tried to sell you a bunch of stuff. Not a moments piece.

Wed, 17 Jan
LGW
SFO
14h 25m
Sat, 27 Jan
SFO
LGW
13h 55m
£303
Trip: 11 days
Overall 5.8 OK
Based on 923 reviews
Overall
6.1
Boarding
6.4
Comfort
5.7
Crew
7.1
Entertainment
4.1
Food
4.7
KEF
FRA
OK 4.6

Delayed/Missed Checked-In Baggage

BOS
KEF
OK 4.0

Flight delayed due to apparent lack of flight plan.

BOS
KEF
OK 5.0

Having to pay an extra $200 for a normal amount of suitcases. 2 fliers with 1@ carry on and 1@ checked bag. WOW, alright. :( And not even a drink of water.

KEF
SXF
Mediocre 2.0

No one informed us an international flight don't provide snack meal or at least water for free

LGW
KEF
OK 5.3

It was on time

Cabin Baggage allowance even smaller than usual Plane still had rubbish in seat pockets Food and drink more expensive than usual

Mon, 22 Jan
LGW
SFO
14h 25m
Thu, 25 Jan
SFO
LGW
13h 55m
£303
Trip: 4 days
Overall 5.8 OK
Based on 923 reviews
Overall
6.1
Boarding
6.4
Comfort
5.7
Crew
7.1
Entertainment
4.1
Food
4.7
SFO
KEF
Mediocre 3.6

The take off and landing

Not even cup of water was served

BOS
KEF
OK 5.0

Having to pay an extra $200 for a normal amount of suitcases. 2 fliers with 1@ carry on and 1@ checked bag. WOW, alright. :( And not even a drink of water.

KEF
SXF
Mediocre 2.0

No one informed us an international flight don't provide snack meal or at least water for free

LGW
KEF
OK 5.3

It was on time

Cabin Baggage allowance even smaller than usual Plane still had rubbish in seat pockets Food and drink more expensive than usual

BOS
KEF
OK 4.6

Delayed/Missed Checked-In Baggage

Fri, 16 Mar
LGW
SFO
14h 25m
Sat, 24 Mar
SFO
LGW
14h 05m
£303
Trip: 9 days
Overall 5.8 OK
Based on 923 reviews
Overall
6.1
Boarding
6.4
Comfort
5.7
Crew
7.1
Entertainment
4.1
Food
4.7
LGW
KEF
OK 5.3

It was on time

Cabin Baggage allowance even smaller than usual Plane still had rubbish in seat pockets Food and drink more expensive than usual

KEF
BOS
Excellent 8.0

New plane with charging ports. Cheap tickets

Not sure how to feel about waiting 40 mins for another flight. Good for those passengers but what about my plans (and 100 other people on the plane)?

BOS
KEF
OK 4.0

Flight delayed due to apparent lack of flight plan.

YYZ
KEF
OK 4.0

Way overpriced for a budget airline for everything. It is no Ryanair!

PIT
KEF
Good 7.0

Extremely polite and professional staff who spoke English perfectly. Very impressive. And the flights were all on time, which was very much appreciated.

Wish we could have had access to movies. Even if we had to pay to watch them. Overseas flights are too long for no in flight entertainment.

Wed, 17 Jan
LTN
SFO
17h 35m
Sat, 27 Jan
SFO
LTN
19h 15m
£368
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Thu, 1 Mar
LCY
SFO
14h 20m
Thu, 22 Mar
SFO
LCY
14h 00m
£404
Trip: 21 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 5274 reviews
Overall
8.3
Boarding
8.3
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
8.0
BCN
ZRH
Excellent 9.6

The boarding process was smooth. The crew was friendly and attentive. Even though it was a short flight, we each got a piece of Swiss chocolate.

Like most planes, there was not enough leg room.

ORD
ZRH
Excellent 10.0

Great service and friendly staff! Also great food!

There's nothing I didn't like :)

ZRH
BOS
Good 6.0

Left on time Crew friendly and helpful

Uncomfortable seats, half of the toilets not working for portion ao flight. Entertainment system not working properly on many seats

ZRH
JFK
OK 5.3

on time and got us there on time.

untrained staff waking people up no flexibility with ordering GF dinner late

ZRH
PRG
Excellent 10.0

Super service, nice crew. On time and flawless baggage transfer to my final destination. Could not be more pleasant experience. I would recommend travel with Swiss to all travelers. Thank you

Sat, 17 Feb
STN
SFO
19h 40m
Mon, 26 Feb
SFO
STN
36h 15m
£407
Trip: 10 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16220 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
MUC
BUD
Excellent 10.0

Courtesy

SFO
FRA
OK 4.3

there was a couple nice flight attendants.

They still used old crappy screens that you couldn't see very well with any glare from windows. The movie selection was not great, not many good newer choices, lots of old movies/shows they probably got for super cheep or free. The food wasn't great at all. I've had much better elsewhere. They cut corners there too, not impressed.

IAD
MUC
Excellent 10.0

Courtesy

MUC
EWR
Excellent 8.6

Walk between connecting flights in Munich was very long (25 minutes) and when we got to the gate for the flight to EWR, there was a very long, and very slow-moving line with only one attendant checking boarding passes for 6 gates. We arrived at the gate and were among the last passengers to board. A last minute additional attendant that was brought on, helped to make the line move a bit faster, but this under-staffed checkpoint added unnecessary stress to our long travel day.

FRA
IST
OK 5.3

Boarding seamed inefficient. Loaded handicap onto separate vehicle in middle of us boarding, so it stopped our process. My seat didn't recline even though it had a button. No in flight entertainment?! At all... Got a crappy breakfast omelet that i didn't want to put in my stomach.

Fri, 8 Dec
LGW
SFO
14h 25m
Tue, 12 Dec
SFO
LGW
13h 55m
£313
Trip: 5 days
Overall 5.8 OK
Based on 923 reviews
Overall
6.1
Boarding
6.4
Comfort
5.7
Crew
7.1
Entertainment
4.1
Food
4.7
PIT
KEF
Good 7.0

Extremely polite and professional staff who spoke English perfectly. Very impressive. And the flights were all on time, which was very much appreciated.

Wish we could have had access to movies. Even if we had to pay to watch them. Overseas flights are too long for no in flight entertainment.

BOS
KEF
OK 5.0

Having to pay an extra $200 for a normal amount of suitcases. 2 fliers with 1@ carry on and 1@ checked bag. WOW, alright. :( And not even a drink of water.

KEF
BOS
Excellent 8.0

New plane with charging ports. Cheap tickets

Not sure how to feel about waiting 40 mins for another flight. Good for those passengers but what about my plans (and 100 other people on the plane)?

LGW
KEF
OK 5.3

It was on time

Cabin Baggage allowance even smaller than usual Plane still had rubbish in seat pockets Food and drink more expensive than usual

SFO
KEF
Mediocre 3.6

The take off and landing

Not even cup of water was served

Sun, 4 Mar
LGW
SFO
20h 20m
Mon, 5 Mar
SFO
LGW
14h 30m
£388
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Sun, 18 Mar
LHR
SFO
11h 05m
Mon, 26 Mar
SFO
LHR
14h 45m
£438
Trip: 9 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 50 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
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 10.0

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

LHR
SFO
Mediocre 3.0

I did not get the requested meal. I had requested Asian Veg meal. I had reconfirmed that Virgin Atlantic Kiosk at Heathrow airport as well. In flight when I asked cabin crew they said they didn't get any request. I was hungry whole flight. Very bad experience.

LHR
SFO
Excellent 9.0

cabin was nice but cold

LHR
SFO
Excellent 10.0

comfort, entertainment, food

nothing

Thu, 25 Jan
LHR
SFO
11h 05m
Sat, 17 Mar
SFO
LHR
10h 30m
£442
Trip: 51 days
6.0GoodShow reviews
Overall 6.0 Good
Based on 7 reviews
Overall
8.2
Boarding
8.2
Comfort
8.0
Crew
8.5
Entertainment
7.4
Food
7.6
MIA
VIE
Excellent 9.6

The crew was very attentive, generous and courteous.

VIE
JFK
Good 6.3

Make sure your carry on luggage is less then 8 kg. Or you would have to check it at your own cost. The food is OK but the portion is very small. If you want a window or isle seat, it would’ve cost you 30 euro to reserve it. The crew is very nice. I guess because the air fare is very cheap, they need to do everything to make the extra cash.

VIE
BRU
Excellent 10.0

Very organized airline. Friendly staff.

VIE
IAD
Mediocre 2.0

When our plane arrived late, many on board had missed connections. We received no help/guidance at gate, other than to be told to go up one floor. One floor up we had to go thru security to reach customer service. 100 people lined up for customer service from 3 Austrian airline reps. After 2 hours of standing, there were still 27 people ahead of me. The woman behind me gave me the local phone number for Austrian airlines and I was able to get on a flight to US leaving in 30 minutes. I managed to make it, and would not have had I waited another hour in line. Why no surge of staff to help? All 3 help numbers on my Lufthansa e-mail receipt could not help. Horrible experience.

VIE
LHR
Excellent 9.3

The flight was nowhere near full, which was terrific. The crew were excellent, polite and attentive. Everything was on time.

I don't remember anything about the food.

Tue, 27 Feb
LHR
SFO
11h 05m
Tue, 13 Mar
SFO
LHR
10h 30m
£443
Trip: 14 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.6
Entertainment
6.5
Food
6.4
YYZ
BRU
Good 6.0

Even after meal request few days back, no veg meal available for this long journey

BRU
FLR
OK 4.0

I was not allowed to get on board even though the plane was sitting at the airport still and it was the airlines delay that I made me late.

BRU
IBZ
Excellent 10.0

On time, good price, convenient, !

Charge for coffee and water

BRU
JFK
Mediocre 3.6

crew indifferent; entertainment limited; food not so good

FCO
BRU
Mediocre 2.0

3€ coffee, no space, flight overbooked.

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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.