$324+ Cheap flights from Boston (BOS) to Barcelona
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Jul 2 — Jul 91
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston to Barcelona with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in October or January, booked 85 days in advance, depart on a Monday or Thursday and return on a Thursday
Cheap flight deals from Boston to Barcelona
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to BarcelonaExplore the most affordable flight options available from Boston to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
Explore the most affordable flight options available from Boston to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
This oojo deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Tue 10/135:45 pm
BCN
- BOS
1 stop27h 00m
TAP AIR PORTUGAL
Deal found 5/29![TAP AIR PORTUGAL logo]()
$562
This Gotogate deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Sat 10/1710:40 pm
BCN
- BOS
1 stop22h 00m
TAP AIR PORTUGAL
Deal found 6/1![TAP AIR PORTUGAL logo]()
$564
This Justfly.com deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Fri 10/93:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 5/28![Icelandair logo]()
$565
This Gotogate deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:20 pm
BOS
- BCN
1 stop17h 30m
TAP AIR PORTUGAL
Thu 10/296:05 pm
BCN
- BOS
1 stop26h 35m
TAP AIR PORTUGAL
Deal found 5/29![TAP AIR PORTUGAL logo]()
$566
This FlightHub deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/208:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Sat 10/103:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 6/2![Icelandair logo]()
$567
This FlightHub deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Sat 10/2410:40 pm
BCN
- BOS
1 stop23h 00m
TAP AIR PORTUGAL
Deal found 6/1![TAP AIR PORTUGAL logo]()
$568
This Justfly.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 pm
BOS
- BCN
1 stop13h 45m
TAP AIR PORTUGAL
Fri 11/612:35 pm
BCN
- BOS
1 stop13h 20m
TAP AIR PORTUGAL
Deal found 5/29![TAP AIR PORTUGAL logo]()
$569
This Booking.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:05 pm
BOS
- BCN
1 stop13h 55m
TAP AIR PORTUGAL
Wed 10/216:00 am
BCN
- BOS
1 stop14h 45m
TAP AIR PORTUGAL
Deal found 5/30![TAP AIR PORTUGAL logo]()
$571
This Booking.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Sun 9/2011:25 am
BCN
- BOS
1 stop14h 55m
TAP AIR PORTUGAL
Deal found 6/2![TAP AIR PORTUGAL logo]()
$572
This Justfly.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:05 pm
BOS
- BCN
1 stop10h 30m
TAP AIR PORTUGAL
Sun 10/116:00 am
BCN
- BOS
1 stop14h 40m
TAP AIR PORTUGAL
Deal found 6/1![TAP AIR PORTUGAL logo]()
$573
This FlightHub deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Tue 9/223:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 6/2![Icelandair logo]()
$574
This Mytrip deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:45 am
BOS
- GRO
2 stops34h 55m
Multiple Airlines
Fri 7/246:15 am
GRO
- BOS
2 stops22h 23m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$878
Best flights from Boston to BarcelonaDiscover carefully curated flight deals from Boston to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
Discover carefully curated flight deals from Boston to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm
BOS
- BCN
2 stops34h 35m
Scandinavian Airlines
Mon 11/95:45 pm
BCN
- BOS
2 stops27h 55m
Scandinavian Airlines
Deal found 5/30![Scandinavian Airlines logo]()
$664
This KLM deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Mon 9/283:15 pm
BCN
- BOS
Nonstop8h 30m
KLM
Deal found 5/30![KLM logo]()
$737
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:25 pm
BOS
- BCN
1 stop14h 25m
Delta
Fri 9/253:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 6/1![Delta logo]()
$741
This KLM deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:20 pm
BOS
- BCN
Nonstop7h 15m
Multiple Airlines
Tue 10/136:10 am
BCN
- BOS
1 stop14h 50m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$764
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:45 am
BOS
- BCN
1 stop20h 35m
United Airlines
Thu 7/1612:15 pm
BCN
- BOS
1 stop11h 52m
United Airlines
Deal found 5/31![United Airlines logo]()
$833
This Scandinavian Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:40 pm
BOS
- BCN
2 stops34h 05m
Scandinavian Airlines
Fri 10/97:00 pm
BCN
- BOS
2 stops33h 25m
Scandinavian Airlines
Deal found 5/28![Scandinavian Airlines logo]()
$731
This KLM deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:55 pm
BOS
- BCN
1 stop12h 55m
Multiple Airlines
Tue 8/43:15 pm
BCN
- BOS
Nonstop8h 26m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$826
This Scandinavian Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:30 am
BOS
- BCN
2 stops28h 40m
Scandinavian Airlines
Thu 8/2712:50 pm
BCN
- BOS
2 stops32h 45m
Scandinavian Airlines
Deal found 6/1![Scandinavian Airlines logo]()
$751
This KLM deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:25 pm
BOS
- BCN
Nonstop7h 10m
KLM
Wed 8/263:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 5/30![KLM logo]()
$827
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
Sat 8/13:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 6/1![Delta logo]()
$832
This KLM deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Wed 7/153:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 5/28![KLM logo]()
$832
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
Sun 8/303:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 5/28![Delta logo]()
$832
This Mytrip deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1310:40 am
BOS
- GRO
2 stops29h 20m
Multiple Airlines
Mon 7/2011:20 pm
GRO
- BOS
2 stops24h 47m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$898
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:45 pm
BOS
- REU
2 stops30h 00m
Iberia
Tue 8/189:15 am
REU
- BOS
2 stops33h 25m
Iberia
Deal found 5/30![Iberia logo]()
$2,141
This Mytrip deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/14:55 pm
BOS
- GRO
2 stops24h 00m
Multiple Airlines
Tue 7/710:35 pm
GRO
- BOS
2 stops23h 28m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,121
This Iberia deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/289:20 pm
BOS
- REU
2 stops29h 25m
Iberia
Tue 7/79:25 am
REU
- BOS
2 stops40h 05m
Iberia
Deal found 5/28![Iberia logo]()
$2,245
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:20 pm
BOS
- GRO
2 stops31h 55m
Iberia
Thu 8/2011:45 am
GRO
- BOS
2 stops35h 15m
Iberia
Deal found 5/30![Iberia logo]()
$2,272
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:45 pm
BOS
- REU
2 stops30h 00m
Iberia
Sat 8/2210:25 am
REU
- BOS
2 stops35h 45m
Iberia
Deal found 5/30![Iberia logo]()
$2,301
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:45 pm
BOS
- GRO
2 stops35h 15m
Iberia
Thu 8/2011:45 am
GRO
- BOS
2 stops30h 55m
Iberia
Deal found 5/30![Iberia logo]()
$2,332
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:20 pm
BOS
- REU
2 stops30h 35m
Iberia
Sat 8/2210:25 am
REU
- BOS
2 stops35h 45m
Iberia
Deal found 5/30![Iberia logo]()
$2,361
This Iberia deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/259:20 pm
BOS
- REU
2 stops29h 25m
Iberia
Tue 7/79:25 am
REU
- BOS
2 stops40h 05m
Iberia
Deal found 5/28![Iberia logo]()
$2,396
This Iberia deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:10 pm
BOS
- GRO
2 stops33h 05m
Iberia
Thu 7/911:45 am
GRO
- BOS
2 stops14h 05m
Iberia
Deal found 5/28![Iberia logo]()
$2,464
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/257:25 am
BOS
- GRO
2 stops24h 35m
Iberia
Thu 8/2011:45 am
GRO
- BOS
2 stops30h 55m
Iberia
Deal found 5/30![Iberia logo]()
$2,501
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:50 pm
BOS
- GRO
2 stops58h 10m
Iberia
Thu 8/2011:45 am
GRO
- BOS
2 stops40h 50m
Iberia
Deal found 5/30![Iberia logo]()
$2,612
This Iberia deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:50 pm
BOS
- GRO
2 stops55h 25m
Iberia
Thu 7/911:45 am
GRO
- BOS
2 stops14h 05m
Iberia
Deal found 5/28![Iberia logo]()
$2,633
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated June 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated June 2, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:45 pm
BOS
- BCN
1 stop17h 15m
Condor
Fri 6/58:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 6/1![Condor logo]()
$615
This Kiwi.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:50 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Thu 7/97:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/30![LEVEL logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:50 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Wed 7/86:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/31![LEVEL logo]()
$589
This Kiwi.com deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:50 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Wed 7/86:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 5/28![Iberia logo]()
$595
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:15 pm
BOS
- GRO
1 stop19h 40m
Multiple Airlines
Tue 7/710:35 pm
GRO
- BOS
2 stops26h 40m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,112
This Kiwi.com deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/511:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 7/226:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/28![LEVEL logo]()
$586
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/511:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Thu 7/97:10 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 5/30![Iberia logo]()
$598
This LEVEL deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1211:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 7/226:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/1![LEVEL logo]()
$587
This Iberia deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1211:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Thu 7/237:10 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 6/2![Iberia logo]()
$597
This Mytrip deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1310:40 am
BOS
- GRO
2 stops29h 20m
Multiple Airlines
Mon 7/2011:20 pm
GRO
- BOS
2 stops24h 47m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$898
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 8/56:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/1![LEVEL logo]()
$585
This Mytrip deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:45 am
BOS
- GRO
2 stops34h 55m
Multiple Airlines
Fri 7/246:15 am
GRO
- BOS
2 stops22h 23m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$878
One-way flights from Boston to BarcelonaSearch for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
This Iberia deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 6/2![Iberia logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:04 am
BOS
- BCN
2 stops28h 36m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:50 pm
BOS
- BCN
3 stops17h 20m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:50 pm
BOS
- BCN
2 stops17h 45m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$328
This Mytrip deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 5/29![Icelandair logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:05 am
BOS
- BCN
2 stops27h 40m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:41 am
BOS
- BCN
3 stops27h 04m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:50 pm
BOS
- BCN
2 stops19h 10m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:10 pm
BOS
- BCN
2 stops43h 05m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:10 am
BOS
- BCN
2 stops28h 25m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:04 am
BOS
- BCN
2 stops42h 26m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$337
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:40 pm
BOS
- REU
2 stops33h 05m
Iberia
Deal found 5/30![Iberia logo]()
$1,148
Find flight deals from Boston to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 2, 2026.
Round-trip from | $562 (oojo) |
|---|---|
One-way from | $324 (Iberia) |
Popular in | June |
Cheapest in | October |
Average price | $809 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Barcelona that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
Use the filters below to find and compare flights from Boston to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 10/26
6:35 pm-10:10 am
2 stops34h 35m
Barcelona-El Prat
Mon 11/9
5:45 pm-3:40 pm
2 stops27h 55m
$664
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 10/2
5:40 pm-9:45 am
2 stops34h 05m
Barcelona-El Prat
Fri 10/9
7:00 pm-10:25 pm
2 stops33h 25m
$731
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 9/20
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Mon 9/28
3:15 pm-5:45 pm
Nonstop8h 30m
$737
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 9/14
4:25 pm-12:50 pm
1 stop14h 25m
Barcelona-El Prat
Fri 9/25
3:15 pm-5:45 pm
Nonstop8h 30m
$741
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 8/23
7:30 am-6:10 pm
2 stops28h 40m
Barcelona-El Prat
Thu 8/27
12:50 pm-3:35 pm
2 stops32h 45m
$751
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Thu 10/8
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Tue 10/13
6:10 am-3:00 pm
1 stop14h 50m
$764
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 7/28
5:55 pm-12:50 pm
1 stop12h 55m
Barcelona-El Prat
Tue 8/4
3:15 pm-5:41 pm
Nonstop8h 26m
$826
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 8/18
7:25 pm-8:35 am
Nonstop7h 10m
Barcelona-El Prat
Wed 8/26
3:15 pm-5:41 pm
Nonstop8h 26m
$827
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 7/7
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Sat 8/1
3:15 pm-5:41 pm
Nonstop8h 26m
$832
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 7/4
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Wed 7/15
3:15 pm-5:41 pm
Nonstop8h 26m
$832
Showing 1-10 of 45 resultsSorted by cheapest first
Best time to book a flight from Boston to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boston with our price prediction graph.
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Barcelona
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $275). Flying from Boston to Barcelona in February is currently the most expensive (average of $1,209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOS to BCN?
Find hourly flight availability from Boston to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 2, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Barcelona as you normally would.
Weekly flight availability from Boston to Barcelona
Explore weekly flight availability from Boston to Barcelona. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 2, 2026.
The most flights from BOS to S37 are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Boston to Barcelona?
How often are flights from Boston to Barcelona delayed?
About 11% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 130 minutes.
What is the most punctual flight time for Boston to Barcelona flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Barcelona flights?
Over the last year, LEVEL have had the lowest number of delays on this route, with just 11% of flights being delayed.
How far ahead should I book a flight from Boston to Barcelona?
The best time to book flights from Boston to Barcelona is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated June 2, 2026.
Read reviews from past customers who have flown Delta,JetBlue, andIberia from Boston to Barcelona. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Boston to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Boston
Popular flights
Alternative routes for Boston to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Barcelona by cabin class
Find flights from Boston to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Barcelona flights
Browse other Boston and Barcelona flight options. Last updated on June 2, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on June 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Boston to Barcelona
Discover the top 10 airlines that operate flights from Boston to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$317 | Average$589 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$330 | Average$609 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$337 | Average$486 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$499 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$433 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$385 | Average$686 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$398 | Average$633 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$466 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$406 | Average$603 | FlexibilityNo cancel fee | On-timeN/A |