Find Cheap Flights to Europe

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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(Round-trip)
Depart: Mon Oct 23 2017 Return: Tue Oct 31 2017 Trip spans 9 days
Major Airline
Major Airline
BOS
LHR
12h 20m
1 stop
LHR
BOS
12h 36m
1 stop
Depart: Fri Sep 22 2017 Return: Tue Sep 26 2017 Trip spans 5 days
Icelandair
Icelandair
BOS
LHR
17h 40m
1 stop
LHR
BOS
26h 25m
1 stop
Depart: Wed Oct 25 2017 Return: Wed Nov 8 2017 Trip spans 15 days
TAP Portugal
TAP Portugal
BOS
LHR
22h 25m
1 stop
LHR
BOS
24h 00m
1 stop
Depart: Sat Nov 18 2017 Return: Sat Nov 25 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
BOS
LHR
6h 25m
nonstop
LHR
BOS
7h 40m
nonstop
Depart: Mon Jul 24 2017 Return: Sat Aug 26 2017 Trip spans 34 days
British Airways
British Airways
EWR
CDG
14h 00m
1 stop
CDG
EWR
11h 25m
1 stop
Depart: Tue Oct 3 2017 Return: Thu Oct 19 2017 Trip spans 17 days
Emirates
Emirates
EWR
ATH
9h 10m
nonstop
ATH
EWR
11h 30m
nonstop
Depart: Wed Sep 13 2017 Return: Wed Sep 27 2017 Trip spans 15 days
Aer Lingus
Aer Lingus
BOS
LHR
8h 50m
1 stop
LHR
BOS
28h 05m
1 stop
Depart: Sat Dec 30 2017 Return: Wed Jan 10 2018 Trip spans 12 days
Iberia
Iberia
BWI
LHR
7h 00m
nonstop
LHR
BWI
8h 15m
nonstop
Depart: Sun Aug 20 2017 Return: Sun Aug 27 2017 Trip spans 8 days
Air Canada
Air Canada
BOS
LHR
15h 55m
1 stop
LHR
BOS
10h 50m
1 stop
Depart: Tue Oct 31 2017 Return: Sat Nov 4 2017 Trip spans 5 days
SWISS
SWISS
EWR
ATH
11h 35m
1 stop
ATH
EWR
25h 35m
1 stop
Depart: Thu Aug 31 2017 Return: Thu Sep 14 2017 Trip spans 15 days
KLM
KLM
EWR
ATH
21h 30m
2 stops
ATH
EWR
19h 06m
1 stop
Depart: Tue Oct 31 2017 Return: Thu Nov 9 2017 Trip spans 10 days
Major Airline
Major Airline
BOS
LHR
6h 15m
nonstop
LHR
BOS
7h 40m
nonstop
Depart: Wed Dec 20 2017 Return: Tue Dec 26 2017 Trip spans 7 days
SAS
SAS
EWR
ATH
12h 25m
1 stop
ATH
EWR
30h 45m
1 stop
Depart: Thu Jul 27 2017 Return: Wed Aug 9 2017 Trip spans 14 days
American Airlines
American Airlines
BWI
LHR
7h 10m
nonstop
LHR
BWI
24h 24m
1 stop
Depart: Tue Aug 1 2017 Return: Fri Aug 18 2017 Trip spans 18 days
United
United
BWI
LHR
12h 38m
1 stop
LHR
BWI
12h 59m
1 stop
Depart: Wed Dec 13 2017 Return: Sun Dec 17 2017 Trip spans 5 days
TAP Portugal
TAP Portugal
BOS
LHR
10h 25m
1 stop
LHR
BOS
22h 35m
1 stop
Depart: Wed Nov 1 2017 Return: Wed Nov 8 2017 Trip spans 8 days
Major Airline
Major Airline
BOS
LHR
6h 20m
nonstop
LHR
BOS
7h 35m
nonstop
Depart: Wed Nov 29 2017 Return: Wed Dec 6 2017 Trip spans 8 days
Major Airline
Major Airline
BOS
LHR
6h 25m
nonstop
LHR
BOS
7h 50m
nonstop
Depart: Mon Oct 30 2017 Return: Wed Nov 1 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
BWI
LHR
17h 50m
1 stop
LHR
BWI
13h 30m
1 stop
Depart: Mon Dec 4 2017 Return: Mon Dec 11 2017 Trip spans 8 days
Major Airline
Major Airline
BOS
LHR
6h 15m
nonstop
LHR
BOS
7h 50m
nonstop
* 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 email and someone from our team will get back to you promptly.

^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users 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.
Airports
Origin

Baltimore
$538
Newark
$519
Boston
$404
Destination

London
$404
Athens
$569
Paris
$519