Find Cheap Flights to London

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights to London

(Round-trip)
Depart: Wed Apr 5 2017 Return: Wed Apr 26 2017 Trip spans 22 days
WOW air
WOW air
SFO
LGW
13h 20m
1 stop
LGW
SFO
16h 30m
1 stop
Depart: Tue Feb 28 2017 Return: Sat Mar 4 2017 Trip spans 5 days
Icelandair
Icelandair
BOS
LHR
9h 40m
1 stop
LHR
BOS
26h 05m
1 stop
Depart: Wed May 3 2017 Return: Tue May 16 2017 Trip spans 14 days
Norwegian
Norwegian
JFK
LGW
7h 00m
nonstop
LGW
JFK
8h 00m
nonstop
Depart: Wed Mar 8 2017 Return: Sun Mar 12 2017 Trip spans 5 days
Major Airline
Major Airline
BOS
LHR
10h 15m
1 stop
LHR
BOS
13h 30m
1 stop
Depart: Wed Mar 22 2017 Return: Mon Mar 27 2017 Trip spans 6 days
Air India
Air India
EWR
LHR
6h 50m
nonstop
LHR
EWR
9h 20m
nonstop
Depart: Thu Apr 6 2017 Return: Mon Apr 24 2017 Trip spans 19 days
Air Canada
Air Canada
SFO
LHR
15h 15m
1 stop
LHR
SFO
17h 07m
1 stop
Depart: Tue May 2 2017 Return: Fri May 12 2017 Trip spans 11 days
United
United
SFO
LHR
10h 35m
nonstop
LHR
SFO
11h 05m
nonstop
Depart: Wed Aug 9 2017 Return: Fri Sep 1 2017 Trip spans 24 days
Virgin Atlantic
Virgin Atlantic
BOS
LHR
6h 44m
nonstop
LHR
BOS
7h 10m
nonstop
Depart: Mon Mar 27 2017 Return: Sat Apr 29 2017 Trip spans 34 days
British Airways
British Airways
JFK
LGW
7h 00m
nonstop
LGW
JFK
7h 55m
nonstop
Depart: Sun Apr 9 2017 Return: Mon Apr 17 2017 Trip spans 9 days
KLM
KLM
BOS
LHR
6h 47m
nonstop
LHR
BOS
7h 36m
nonstop
Depart: Sun Apr 2 2017 Return: Tue Apr 25 2017 Trip spans 24 days
Brussels Airlines
Brussels Airlines
SFO
LHR
10h 15m
nonstop
LHR
SFO
11h 00m
nonstop
Depart: Sun Aug 6 2017 Return: Wed Aug 23 2017 Trip spans 18 days
Iberia
Iberia
BOS
LHR
16h 25m
1 stop
LHR
BOS
13h 20m
1 stop
Depart: Fri Mar 24 2017 Return: Tue Apr 4 2017 Trip spans 12 days
Delta
Delta
BOS
LHR
13h 25m
1 stop
LHR
BOS
7h 36m
nonstop
Depart: Mon Jun 5 2017 Return: Tue Jun 13 2017 Trip spans 9 days
SWISS
SWISS
EWR
LHR
13h 25m
1 stop
LHR
EWR
11h 25m
1 stop
Depart: Sun Apr 30 2017 Return: Tue May 9 2017 Trip spans 10 days
Lufthansa
Lufthansa
SFO
LHR
10h 35m
nonstop
LHR
SFO
16h 05m
1 stop
Depart: Wed Mar 29 2017 Return: Thu Apr 6 2017 Trip spans 9 days
Austrian Airlines
Austrian Airlines
EWR
LHR
7h 20m
nonstop
LHR
EWR
8h 25m
nonstop
Depart: Sun Jul 23 2017 Return: Wed Aug 16 2017 Trip spans 25 days
Royal Air Maroc
Royal Air Maroc
JFK
LGW
27h 30m
1 stop
LGW
JFK
24h 55m
1 stop
Depart: Mon Feb 27 2017 Return: Sun Mar 5 2017 Trip spans 7 days
Aer Lingus
Aer Lingus
EWR
LGW
11h 55m
1 stop
LGW
EWR
11h 40m
1 stop
Depart: Tue Feb 28 2017 Return: Tue Mar 14 2017 Trip spans 14 days
Turkish Airlines
Turkish Airlines
ORD
LGW
30h 00m
1 stop
LGW
ORD
37h 35m
1 stop
Depart: Sun Feb 26 2017 Return: Mon Mar 6 2017 Trip spans 9 days
TAP Portugal
TAP Portugal
JFK
LGW
29h 10m
1 stop
LGW
JFK
28h 05m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

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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.

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Airports
Origin

San Francisco
$360
New York
$416
Chicago
$538
Newark
$443
Boston
$416
Destination

London
only $416
only $360
Airlines Airline reviews

113 travelers who booked a flight from San Francisco to London rated their chosen airlines with an average of 7.7.

Overall
7.8
Boarding
7.8
Crew
8.2
Comfort
7.3
Food
7.1
Entertainment
7.5