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

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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
19%
expected price increase
Average Price:
$1842
(avg. price over the last 2 weeks)
Good Deal:
$1515
or less (round trip)

When to Book Flights from San Francisco to London

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 $1514 or less.
The cheapest flight from San Francisco to London was found 67 days before departure, on average.
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 February.
Morning departure is around 8% 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 San Francisco to London Flights

How long does a flight from San Francisco to London take?
An average nonstop flight takes 14h 05m, covering a distance of 5362 miles.
How many flights are there between San Francisco and London?
There are 389 (nonstop) flights between San Francisco and London per week, averaging 55 per day.
Which airlines provide the cheapest flights from San Francisco to London?
In the past 3 days, the cheapest round-trip tickets were found on WOW air ($320) and Multiple Airlines ($486)
Do I need a passport to fly between San Francisco and London?
Yes.
Which airlines fly most frequently between San Francisco and London?
Air New Zealand (8 times daily), Delta (6 times daily), Virgin Atlantic (6 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to London?
For San Francisco to London, Saturday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from London back to San Francisco, the best deals are generally found on Wednesday, with Monday being the most expensive.

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

Airports
Origin
San Francisco
$320
only
$320
Destination
London
$486
only
$486
$320
only
$320
Sat, Feb 24
SFO
LGW
14h 10m
Fri, Mar 2
LGW
SFO
14h 45m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

Mon, May 21
SFO
LTN
34h 50m
Thu, May 31
LTN
SFO
19h 15m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 1
SFO
LGW
14h 10m
Fri, Mar 9
LGW
SFO
14h 45m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

KEF
CDG
Okay 5.6

Same as listed above

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

Sat, Mar 3
SFO
LGW
14h 10m
Fri, Mar 9
LGW
SFO
14h 45m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

BOS
KEF
Okay 5.6

Discomfort in seat, need to pay for water, no WiFi or Internet/entertainment for international flight.

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

Tue, Mar 6
SFO
LGW
14h 10m
Mon, Mar 12
LGW
SFO
14h 45m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
CDG
Okay 5.6

Same as listed above

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

Sat, Mar 10
SFO
LGW
14h 10m
Wed, Mar 14
LGW
SFO
14h 45m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

Tue, Apr 17
SFO
LGW
23h 50m
Mon, Apr 23
LGW
SFO
14h 45m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

Sat, May 19
SFO
LTN
34h 50m
Fri, Jun 1
LTN
SFO
18h 05m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 26
SFO
LGW
23h 50m
Sun, May 13
LGW
SFO
13h 35m
Trip: 18 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

BOS
KEF
Okay 5.6

Discomfort in seat, need to pay for water, no WiFi or Internet/entertainment for international flight.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

KEF
CDG
Okay 5.6

Same as listed above

Mon, May 21
SFO
LTN
34h 50m
Fri, Jun 1
LTN
SFO
18h 05m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 28
SFO
LGW
14h 05m
Sun, May 13
LGW
SFO
13h 35m
Trip: 16 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

KEF
CDG
Okay 5.6

Same as listed above

Sat, May 19
SFO
LTN
34h 50m
Thu, May 31
LTN
SFO
19h 15m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 1
SFO
LGW
14h 05m
Thu, May 10
LGW
SFO
13h 35m
Trip: 10 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
CDG
Okay 5.6

Same as listed above

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

Mon, May 21
SFO
LTN
34h 50m
Thu, May 31
LTN
SFO
19h 15m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Thu, May 3
SFO
LGW
23h 50m
Sun, May 13
LGW
SFO
13h 35m
Trip: 11 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
CDG
Okay 5.6

Same as listed above

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

Wed, May 23
SFO
LTN
34h 50m
Thu, May 31
LTN
SFO
19h 15m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sun, May 6
SFO
LGW
17h 15m
Sun, May 13
LGW
SFO
13h 35m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

KEF
CDG
Okay 5.6

Same as listed above

Tue, May 22
SFO
LTN
33h 45m
Thu, May 31
LTN
SFO
19h 15m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 7
SFO
LGW
17h 30m
Fri, May 11
LGW
SFO
13h 35m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1225 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
7.0
Entertainment
4.1
Food
4.7
KEF
BOS
Good 6.0

That was a pleasant flight with quick check in.

There was no free beverages like water, tea or coffee.

BOS
KEF
Okay 5.6

Discomfort in seat, need to pay for water, no WiFi or Internet/entertainment for international flight.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

KEF
CDG
Okay 5.6

Same as listed above

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

Sat, Apr 28
SFO
LTN
17h 25m
Mon, May 21
LTN
SFO
18h 05m
Trip: 24 days
Overall 0.0 Poor
Based on 0 reviews
Show more results

San Francisco to London Flight Information

Flights Arrive in London
Flights Depart from San Francisco
Flight Price $320
Distance 5362 miles
Airlines WOW air
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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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.