$281+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
May 4 — May 111
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Barcelona with Cheapflights
1. Tell us where you want to go
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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 September or October, booked 29 days in advance, depart on a Monday or Tuesday and return on a Thursday
Cheap flight deals from Boston to Barcelona
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Best
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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 April 4, 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 April 4, 2026.
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Tue 5/1210:40 pm
BCN
- BOS
1 stop22h 05m
TAP AIR PORTUGAL
Deal found 3/30![TAP AIR PORTUGAL logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 8/311:00 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Thu 8/206:30 pm
BCN
- BOS
Nonstop8h 45m
LEVEL
Deal found 3/30![LEVEL logo]()
$513
This oojo deal was found by Cheapflights users on 4/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Tue 5/1910:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 4/1![TAP AIR PORTUGAL logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 8/1811:00 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Tue 8/256:30 pm
BCN
- BOS
Nonstop8h 45m
Iberia
Deal found 3/30![Iberia logo]()
$526
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 11/310:40 pm
BOS
- BCN
Nonstop7h 15m
LEVEL
Thu 11/126:10 pm
BCN
- BOS
Nonstop8h 45m
LEVEL
Deal found 3/30![LEVEL logo]()
$529
This Gotogate deal was found by Cheapflights users on 3/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Thu 5/710:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$532
This lol.travel deal was found by Cheapflights users on 3/31. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:15 pm
BOS
- BCN
2 stops20h 15m
TAP AIR PORTUGAL
Tue 5/1210:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$538
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:15 pm
BOS
- BCN
2 stops11h 40m
TAP AIR PORTUGAL
Thu 5/146:00 am
BCN
- BOS
1 stop14h 45m
TAP AIR PORTUGAL
Deal found 3/30![TAP AIR PORTUGAL logo]()
$539
This Vliegwinkel deal was found by Cheapflights users on 4/3. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:40 pm
BOS
- BCN
1 stop18h 30m
Scandinavian Airlines
Tue 5/127:00 pm
BCN
- BOS
1 stop26h 35m
Scandinavian Airlines
Deal found 4/3![Scandinavian Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/2710:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Wed 5/63:00 pm
BCN
- BOS
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$544
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 10/511:00 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Sun 10/117:20 pm
BCN
- BOS
Nonstop8h 45m
LEVEL
Deal found 3/30![LEVEL logo]()
$545
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:00 pm
BOS
- GRO
2 stops17h 00m
Multiple Airlines
Thu 5/711:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$662
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 April 4, 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 April 4, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 4/3. 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 5/45:40 pm
BOS
- BCN
1 stop18h 30m
Scandinavian Airlines
Fri 5/812:00 pm
BCN
- BOS
2 stops33h 35m
Scandinavian Airlines
Deal found 4/3![Scandinavian Airlines logo]()
$603
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:00 pm
BOS
- GRO
2 stops17h 00m
Multiple Airlines
Thu 5/711:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$662
This Finnair deal was found by Cheapflights users on 4/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:50 pm
BOS
- BCN
Nonstop7h 20m
Finnair
Tue 5/126:30 pm
BCN
- BOS
Nonstop8h 35m
Finnair
Deal found 4/1![Finnair logo]()
$696
This Delta deal was found by Cheapflights users on 4/1. 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 6/19:05 am
BOS
- BCN
1 stop17h 40m
Delta
Tue 6/93:15 pm
BCN
- BOS
Nonstop8h 23m
Delta
Deal found 4/1![Delta logo]()
$739
This KLM deal was found by Cheapflights users on 4/3. 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.
Fri 5/224:35 pm
BOS
- BCN
1 stop10h 10m
KLM
Fri 5/293:15 pm
BCN
- BOS
Nonstop8h 20m
KLM
Deal found 4/3![KLM logo]()
$765
This United Airlines deal was found by Cheapflights users on 4/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:45 am
BOS
- BCN
1 stop20h 35m
United Airlines
Mon 4/271:25 pm
BCN
- BOS
1 stop34h 15m
United Airlines
Deal found 4/2![United Airlines logo]()
$811
This Delta deal was found by Cheapflights users on 4/1. 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 6/16:00 am
BOS
- BCN
1 stop20h 45m
Delta
Mon 6/83:15 pm
BCN
- BOS
Nonstop8h 23m
Delta
Deal found 4/1![Delta logo]()
$739
This KLM deal was found by Cheapflights users on 3/30. 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.
Sat 5/304:35 pm
BOS
- BCN
1 stop10h 10m
KLM
Tue 6/910:55 am
BCN
- BOS
1 stop14h 19m
KLM
Deal found 3/30![KLM logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Wed 8/1912:34 pm
BOS
- BCN
2 stops13h 46m
United Airlines
Wed 8/2611:15 am
BCN
- BOS
2 stops16h 40m
United Airlines
Deal found 4/3![United Airlines logo]()
$825
This Delta deal was found by Cheapflights users on 4/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 pm
BOS
- BCN
1 stop10h 15m
Delta
Wed 6/311:00 am
BCN
- BOS
1 stop16h 07m
Delta
Deal found 4/2![Delta logo]()
$763
This Mytrip deal was found by Cheapflights users on 4/4. 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 5/205:50 am
BOS
- GRO
2 stops35h 05m
Multiple Airlines
Mon 6/88:55 pm
GRO
- BOS
3 stops47h 50m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$935
This Delta deal was found by Cheapflights users on 4/3. 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.
Wed 6/37:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
Sat 6/136:20 am
BCN
- BOS
1 stop12h 45m
Delta
Deal found 4/3![Delta logo]()
$811
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Mon 8/109:40 pm
BOS
- GRO
2 stops19h 00m
Multiple Airlines
Mon 8/2411:20 pm
GRO
- BOS
2 stops24h 15m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$992
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/214:35 pm
BOS
- BCN
1 stop20h 15m
Delta
Sat 5/303:15 pm
BCN
- BOS
Nonstop8h 20m
Delta
Deal found 3/31![Delta logo]()
$826
This Delta deal was found by Cheapflights users on 4/3. 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.
Sun 7/59:05 am
BOS
- BCN
1 stop17h 40m
Delta
Tue 7/146:20 am
BCN
- BOS
1 stop16h 20m
Delta
Deal found 4/3![Delta logo]()
$828
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 9/305:25 pm
BOS
- GRO
1 stop23h 30m
Multiple Airlines
Wed 10/711:30 pm
GRO
- BOS
1 stop21h 25m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$1,052
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:10 am
BOS
- GRO
2 stops27h 15m
Multiple Airlines
Fri 6/196:15 am
GRO
- BOS
2 stops17h 20m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,331
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated April 4, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated April 4, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Tue 5/1210:40 pm
BCN
- BOS
1 stop22h 05m
TAP AIR PORTUGAL
Deal found 3/30![TAP AIR PORTUGAL logo]()
$500
This Gotogate deal was found by Cheapflights users on 3/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Thu 5/710:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/2710:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Wed 5/63:00 pm
BCN
- BOS
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$544
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:00 pm
BOS
- GRO
2 stops17h 00m
Multiple Airlines
Thu 5/711:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$662
This lol.travel deal was found by Cheapflights users on 3/31. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:15 pm
BOS
- BCN
2 stops20h 15m
TAP AIR PORTUGAL
Tue 5/1210:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 3/31![TAP AIR PORTUGAL logo]()
$538
This Vliegwinkel deal was found by Cheapflights users on 4/3. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:40 pm
BOS
- BCN
1 stop18h 30m
Scandinavian Airlines
Tue 5/127:00 pm
BCN
- BOS
1 stop26h 35m
Scandinavian Airlines
Deal found 4/3![Scandinavian Airlines logo]()
$543
This oojo deal was found by Cheapflights users on 4/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:45 pm
BOS
- BCN
1 stop14h 35m
TAP AIR PORTUGAL
Tue 5/1910:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 4/1![TAP AIR PORTUGAL logo]()
$521
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:15 pm
BOS
- BCN
2 stops11h 40m
TAP AIR PORTUGAL
Thu 5/146:00 am
BCN
- BOS
1 stop14h 45m
TAP AIR PORTUGAL
Deal found 3/30![TAP AIR PORTUGAL logo]()
$539
This Mytrip deal was found by Cheapflights users on 4/4. 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 5/205:50 am
BOS
- GRO
2 stops35h 05m
Multiple Airlines
Mon 6/88:55 pm
GRO
- BOS
3 stops47h 50m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$935
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2112:30 pm
BOS
- GRO
3 stops28h 05m
Multiple Airlines
Sun 6/78:50 am
GRO
- BOS
3 stops41h 30m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,181
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 April 4, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated April 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Sun 4/268:50 pm
BOS
- BCN
2 stops20h 15m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/288:50 pm
BOS
- BCN
3 stops22h 15m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Sun 5/319:50 pm
BOS
- BCN
3 stops21h 25m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/278:50 pm
BOS
- BCN
2 stops20h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 5/48:50 pm
BOS
- BCN
3 stops39h 55m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Fri 5/110:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
Deal found 3/30![LEVEL logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sat 5/210:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
Deal found 3/31![LEVEL logo]()
$322
This Iberia deal was found by Cheapflights users on 4/4. 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 6/219:20 pm
BOS
- REU
2 stops29h 25m
Iberia
Deal found 4/4![Iberia logo]()
$1,524
This Iberia deal was found by Cheapflights users on 4/3. 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 6/145:40 pm
BOS
- REU
2 stops33h 05m
Iberia
Deal found 4/3![Iberia logo]()
$1,529
This Iberia deal was found by Cheapflights users on 4/4. 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.
Wed 6/249:20 pm
BOS
- REU
2 stops53h 25m
Iberia
Deal found 4/4![Iberia logo]()
$1,537
This Iberia deal was found by Cheapflights users on 4/4. 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
Deal found 4/4![Iberia logo]()
$1,594
This Iberia deal was found by Cheapflights users on 4/3. 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 6/139:20 pm
BOS
- REU
2 stops53h 25m
Iberia
Deal found 4/3![Iberia logo]()
$1,607
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 April 4, 2026.
Round-trip from | $500 (Justfly.com) |
|---|---|
One-way from | $281 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $593 |
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 April 4, 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 5/4
5:40 pm-6:10 pm
1 stop18h 30m
Barcelona-El Prat
Fri 5/8
12:00 pm-3:35 pm
2 stops33h 35m
$603
BostonGirona
BOS - GRO
BOSGRO
Boston Logan Intl
Mon 4/27
11:00 pm-10:00 pm
2 stops17h 00m
Girona Costa Brava
Thu 5/7
11:20 pm-6:50 pm
2 stops25h 30m
$662
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 5/4
10:50 pm-12:10 pm
Nonstop7h 20m
Barcelona-El Prat
Tue 5/12
6:30 pm-9:05 pm
Nonstop8h 35m
$696
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 6/1
9:05 am-8:45 am
1 stop17h 40m
Barcelona-El Prat
Tue 6/9
3:15 pm-5:38 pm
Nonstop8h 23m
$739
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 6/1
6:00 am-8:45 am
1 stop20h 45m
Barcelona-El Prat
Mon 6/8
3:15 pm-5:38 pm
Nonstop8h 23m
$739
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 5/27
7:00 pm-11:15 am
1 stop10h 15m
Barcelona-El Prat
Wed 6/3
11:00 am-9:07 pm
1 stop16h 07m
$763
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 5/22
4:35 pm-8:45 am
1 stop10h 10m
Barcelona-El Prat
Fri 5/29
3:15 pm-5:35 pm
Nonstop8h 20m
$765
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 5/30
4:35 pm-8:45 am
1 stop10h 10m
Barcelona-El Prat
Tue 6/9
10:55 am-7:14 pm
1 stop14h 19m
$775
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 4/20
5:45 am-8:20 am
1 stop20h 35m
Barcelona-El Prat
Mon 4/27
1:25 pm-5:40 pm
1 stop34h 15m
$811
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 6/3
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Sat 6/13
6:20 am-1:05 pm
1 stop12h 45m
$811
Showing 1-10 of 33 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
How far ahead should I book a flight from Boston to Barcelona?
Use this chart to determine the optimal time to book a round-trip flight from Boston to Barcelona. Price data was last updated on April 2, 2026.
The best time to book flights from Boston to Barcelona is 29 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.
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, September is the cheapest month in which you can book a flight from Boston to Barcelona (average of $275). Flying from Boston to Barcelona in June is currently the most expensive (average of $415). 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 April 4, 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.
How much does it cost to fly round-trip from Boston to Barcelona?
How often are flights from Boston to Barcelona delayed?
About 10% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 135 minutes.
What is the most punctual flight time for Boston to Barcelona flights?
Historically, flights departing in the morning 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 9% of flights being delayed.
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 April 4, 2026.
Read reviews from past customers who have flown Delta,American Airlines, 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.
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Comfort
7.9
Food
7.2
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
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Alternative routes for Boston to Barcelona
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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 April 4, 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 April 4, 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 April 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$330 | Average$583 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$337 | Average$486 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$506 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$592 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$352 | Average$442 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$382 | Average$516 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$398 | Average$683 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$466 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$406 | Average$599 | FlexibilityNo cancel fee | On-timeN/A |