Find Cheap Flights to Spain

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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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights to

(Round-trip)
Depart: Wed Feb 28 2018 Return: Wed Mar 7 2018 Trip spans 8 days
Multiple Airlines
Multiple Airlines
BOS
BCN
23h 00m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Mon Mar 26 2018 Return: Mon Apr 2 2018 Trip spans 8 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
21h 15m
1 stop
BCN
BOS
21h 00m
1 stop
Depart: Sun Jan 14 2018 Return: Wed Jan 24 2018 Trip spans 11 days
Norwegian
Norwegian
BOS
BCN
12h 40m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Mon Mar 5 2018 Return: Fri Mar 9 2018 Trip spans 5 days
Multiple Airlines
Multiple Airlines
BOS
BCN
11h 10m
1 stop
BCN
BOS
15h 10m
1 stop
Depart: Wed Apr 25 2018 Return: Thu Jun 21 2018 Trip spans 58 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
23h 25m
1 stop
BCN
BOS
12h 40m
1 stop
Depart: Wed Jan 24 2018 Return: Sun Feb 4 2018 Trip spans 12 days
Multiple Airlines
Multiple Airlines
BOS
BCN
11h 10m
1 stop
BCN
BOS
15h 30m
1 stop
Depart: Wed Jan 17 2018 Return: Wed Jan 24 2018 Trip spans 8 days
Norwegian
Norwegian
BOS
BCN
10h 35m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Thu Jan 25 2018 Return: Sat Feb 3 2018 Trip spans 10 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
16h 40m
1 stop
BCN
BOS
25h 25m
1 stop
Depart: Thu Jan 25 2018 Return: Wed Jan 31 2018 Trip spans 7 days
Multiple Airlines
Multiple Airlines
BOS
MAD
17h 10m
1 stop
MAD
BOS
16h 50m
1 stop
Depart: Fri Jan 19 2018 Return: Wed Jan 24 2018 Trip spans 6 days
Norwegian
Norwegian
BOS
BCN
10h 35m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Mon Jan 29 2018 Return: Sat Feb 3 2018 Trip spans 6 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
16h 40m
1 stop
BCN
BOS
25h 25m
1 stop
Depart: Mon Jan 29 2018 Return: Mon Feb 5 2018 Trip spans 8 days
Multiple Airlines
Multiple Airlines
BOS
BCN
19h 40m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Sun Feb 4 2018 Return: Mon Feb 12 2018 Trip spans 9 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
11h 10m
1 stop
BCN
BOS
12h 45m
1 stop
Depart: Sun Jan 14 2018 Return: Mon Jan 22 2018 Trip spans 9 days
Norwegian
Norwegian
BOS
BCN
12h 40m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Sun Feb 4 2018 Return: Mon Feb 12 2018 Trip spans 9 days
Multiple Airlines
Multiple Airlines
BOS
MAD
10h 50m
1 stop
MAD
BOS
16h 15m
1 stop
Depart: Mon Feb 5 2018 Return: Mon Feb 12 2018 Trip spans 8 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
23h 00m
1 stop
BCN
BOS
12h 45m
1 stop
Depart: Mon Jan 15 2018 Return: Mon Jan 22 2018 Trip spans 8 days
Norwegian
Norwegian
BOS
BCN
10h 50m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Wed Feb 28 2018 Return: Mon Mar 12 2018 Trip spans 12 days
TAP AIR PORTUGAL
TAP AIR PORTUGAL
BOS
BCN
23h 00m
1 stop
BCN
BOS
12h 45m
1 stop
Depart: Fri Jan 19 2018 Return: Mon Jan 22 2018 Trip spans 4 days
Norwegian
Norwegian
BOS
BCN
10h 35m
1 stop
BCN
BOS
14h 40m
1 stop
Depart: Mon Feb 5 2018 Return: Fri Feb 23 2018 Trip spans 19 days
Multiple Airlines
Multiple Airlines
BOS
MAD
8h 40m
1 stop
MAD
BOS
17h 20m
1 stop
* 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

Boston
$327
Destination

Barcelona
$327
Madrid
$328