$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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Jun 10 — Jun 171
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
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 46 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
Last-minute
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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 May 11, 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 May 11, 2026.
This FlightHub deal was found by Cheapflights users on 5/10. 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.
Mon 9/288:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Wed 10/73:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 5/10![Icelandair logo]()
$551
This FlightHub deal was found by Cheapflights users on 5/7. 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
Wed 9/303:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 5/7![Icelandair logo]()
$552
This FlightHub deal was found by Cheapflights users on 5/10. 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.
Mon 9/288:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Mon 10/53:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 5/10![Icelandair logo]()
$553
This oojo deal was found by Cheapflights users on 5/10. 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.
Mon 9/148:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Sat 9/263:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 5/10![Icelandair logo]()
$554
This oojo deal was found by Cheapflights users on 5/6. 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.
Sun 9/138:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Tue 9/223:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 5/6![Icelandair logo]()
$555
This oojo deal was found by Cheapflights users on 5/10. 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 9/118:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Fri 9/253:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 5/10![Icelandair logo]()
$556
This FlightHub deal was found by Cheapflights users on 5/7. 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 9/293:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 5/7![Icelandair logo]()
$560
This Gotogate deal was found by Cheapflights users on 5/10. 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 5/114:45 pm
BOS
- BCN
1 stop23h 25m
Condor
Tue 5/198:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 5/10![Condor logo]()
$562
This Gotogate deal was found by Cheapflights users on 5/7. 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.
Wed 9/2310:45 pm
BOS
- BCN
1 stop17h 05m
TAP AIR PORTUGAL
Sat 10/33:00 pm
BCN
- BOS
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 5/7![TAP AIR PORTUGAL logo]()
$563
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 10/18:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Fri 10/93:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 5/10![Icelandair logo]()
$564
This KAYAK deal was found by Cheapflights users on 5/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Mon 10/193:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 5/6![Icelandair logo]()
$565
This Mytrip deal was found by Cheapflights users on 5/8. 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 6/2610:05 am
BOS
- GRO
2 stops29h 40m
Multiple Airlines
Sat 7/49:05 am
GRO
- BOS
2 stops30h 00m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,068
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 May 11, 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 May 11, 2026.
This LEVEL deal was found by Cheapflights users on 5/10. 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.
Thu 8/611:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 8/126:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/10![LEVEL logo]()
$659
This United Airlines deal was found by Cheapflights users on 5/9. 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.
Fri 6/510:55 am
BOS
- BCN
2 stops15h 25m
United Airlines
Mon 6/811:15 am
BCN
- BOS
2 stops16h 38m
United Airlines
Deal found 5/9![United Airlines logo]()
$754
This Delta deal was found by Cheapflights users on 5/10. 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 5/257:00 pm
BOS
- BCN
1 stop14h 35m
Delta
Mon 6/111:10 am
BCN
- BOS
1 stop13h 20m
Delta
Deal found 5/10![Delta logo]()
$782
This KLM deal was found by Cheapflights users on 5/6. 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 6/307:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Thu 7/163:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 5/6![KLM logo]()
$796
This KLM deal was found by Cheapflights users on 5/6. 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.
Wed 8/55:10 pm
BOS
- BCN
1 stop12h 05m
Multiple Airlines
Tue 8/113:15 pm
BCN
- BOS
Nonstop8h 26m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$803
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 7/45:45 am
BOS
- BCN
1 stop20h 15m
United Airlines
Thu 8/1312:15 pm
BCN
- BOS
2 stops30h 32m
United Airlines
Deal found 5/10![United Airlines logo]()
$790
This Delta deal was found by Cheapflights users on 5/10. 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 7/234:30 pm
BOS
- BCN
1 stop14h 20m
Delta
Tue 8/43:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 5/10![Delta logo]()
$801
This KLM deal was found by Cheapflights users on 5/8. 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 6/287:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Sun 7/196:20 am
BCN
- BOS
1 stop12h 58m
KLM
Deal found 5/8![KLM logo]()
$824
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/1610:35 am
BOS
- BCN
1 stop15h 25m
United Airlines
Tue 6/2312:15 pm
BCN
- BOS
2 stops39h 38m
United Airlines
Deal found 5/8![United Airlines logo]()
$790
This Delta deal was found by Cheapflights users on 5/7. 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
Tue 7/146:20 am
BCN
- BOS
1 stop12h 58m
Delta
Deal found 5/7![Delta logo]()
$824
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sun 6/213:35 pm
BOS
- BCN
1 stop10h 25m
United Airlines
Sun 6/286:40 am
BCN
- BOS
2 stops17h 27m
United Airlines
Deal found 5/7![United Airlines logo]()
$833
This Delta deal was found by Cheapflights users on 5/7. 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 8/26:05 am
BOS
- BCN
1 stop20h 40m
Delta
Mon 8/173:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 5/7![Delta logo]()
$835
This Mytrip deal was found by Cheapflights users on 5/8. 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 6/2610:05 am
BOS
- GRO
2 stops29h 40m
Multiple Airlines
Sat 7/49:05 am
GRO
- BOS
2 stops30h 00m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,068
This Mytrip deal was found by Cheapflights users on 5/9. 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.
Sun 6/145:50 am
BOS
- GRO
3 stops35h 05m
Multiple Airlines
Sat 6/2012:10 am
GRO
- BOS
3 stops38h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,076
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated May 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/10. 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 5/114:45 pm
BOS
- BCN
1 stop23h 25m
Condor
Tue 5/198:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 5/10![Condor logo]()
$562
This CheapOair deal was found by Cheapflights users on 5/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:45 pm
BOS
- BCN
1 stop10h 45m
Condor
Thu 5/148:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 5/9![Condor logo]()
$581
This Iberia deal was found by Cheapflights users on 5/8. 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 6/1010:50 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Tue 6/236:30 pm
BCN
- BOS
Nonstop8h 30m
Iberia
Deal found 5/8![Iberia logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/1010:50 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Tue 6/236:30 pm
BCN
- BOS
Nonstop8h 30m
LEVEL
Deal found 5/9![LEVEL logo]()
$576
This LEVEL deal was found by Cheapflights users on 5/8. 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 6/1411:30 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Tue 6/236:30 pm
BCN
- BOS
Nonstop8h 30m
LEVEL
Deal found 5/8![LEVEL logo]()
$586
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/1411:30 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Tue 6/236:30 pm
BCN
- BOS
Nonstop8h 30m
Iberia
Deal found 5/8![Iberia logo]()
$595
This Iberia deal was found by Cheapflights users on 5/10. 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 6/1411:30 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 5/10![Iberia logo]()
$597
This Mytrip deal was found by Cheapflights users on 5/9. 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.
Sun 6/145:50 am
BOS
- GRO
3 stops35h 05m
Multiple Airlines
Sat 6/2012:10 am
GRO
- BOS
3 stops38h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,076
This Mytrip deal was found by Cheapflights users on 5/8. 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 6/2610:05 am
BOS
- GRO
2 stops29h 40m
Multiple Airlines
Sat 7/49:05 am
GRO
- BOS
2 stops30h 00m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,068
This LEVEL deal was found by Cheapflights users on 5/6. 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.
Mon 6/2910:50 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Thu 7/167:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/6![LEVEL logo]()
$587
This LEVEL deal was found by Cheapflights users on 5/8. 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.
Mon 6/2910:50 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Wed 7/86:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 5/8![LEVEL logo]()
$588
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 May 11, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This Iberia deal was found by Cheapflights users on 5/9. 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 6/1411:30 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Deal found 5/9![Iberia logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 7/711:00 pm
BOS
- BCN
2 stops37h 40m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 7/135:10 pm
BOS
- BCN
3 stops23h 50m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 7/128:50 pm
BOS
- BCN
2 stops20h 35m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/411:55 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Deal found 5/8![LEVEL logo]()
$333
This Super.com deal was found by Cheapflights users on 5/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
Deal found 5/6![LEVEL logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/411:55 pm
BOS
- BCN
Nonstop7h 10m
Iberia
Deal found 5/8![Iberia logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 5/3010:50 pm
BOS
- BCN
Nonstop7h 20m
Iberia
Deal found 5/6![Iberia logo]()
$339
This Mytrip deal was found by Cheapflights users on 5/10. 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.
Tue 6/28:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 5/10![Icelandair logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 8/28:50 pm
BOS
- BCN
2 stops16h 25m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 7/58:50 pm
BOS
- BCN
2 stops32h 20m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$343
This Mytrip deal was found by Cheapflights users on 5/9. 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.
Tue 5/269:15 pm
BOS
- BCN
1 stop10h 05m
Azores Airlines
Deal found 5/9![Azores Airlines logo]()
$345
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 May 11, 2026.
Round-trip from | $551 (FlightHub) |
|---|---|
One-way from | $324 (Iberia) |
Popular in | June |
Cheapest in | October |
Average price | $688 |
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 May 11, 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
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Thu 8/6
11:35 pm-12:40 pm
Nonstop7h 05m
Barcelona-El Prat
Wed 8/12
6:30 pm-9:05 pm
Nonstop8h 35m
$659
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 6/5
10:55 am-8:20 am
2 stops15h 25m
Barcelona-El Prat
Mon 6/8
11:15 am-9:53 pm
2 stops16h 38m
$754
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 5/25
7:00 pm-3:35 pm
1 stop14h 35m
Barcelona-El Prat
Mon 6/1
11:10 am-6:30 pm
1 stop13h 20m
$782
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 7/4
5:45 am-8:00 am
1 stop20h 15m
Barcelona-El Prat
Thu 8/13
12:15 pm-12:47 pm
2 stops30h 32m
$790
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 6/16
10:35 am-8:00 am
1 stop15h 25m
Barcelona-El Prat
Tue 6/23
12:15 pm-9:53 pm
2 stops39h 38m
$790
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 6/30
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Thu 7/16
3:15 pm-5:41 pm
Nonstop8h 26m
$796
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Thu 7/23
4:30 pm-12:50 pm
1 stop14h 20m
Barcelona-El Prat
Tue 8/4
3:15 pm-5:41 pm
Nonstop8h 26m
$801
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 8/5
5:10 pm-11:15 am
1 stop12h 05m
Barcelona-El Prat
Tue 8/11
3:15 pm-5:41 pm
Nonstop8h 26m
$803
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 6/28
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Sun 7/19
6:20 am-1:18 pm
1 stop12h 58m
$824
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 7/7
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Tue 7/14
6:20 am-1:18 pm
1 stop12h 58m
$824
Showing 1-10 of 28 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?
The best time to book flights from Boston to Barcelona is 84 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, December is the cheapest month in which you can book a flight from Boston to Barcelona (average of $305). Flying from Boston to Barcelona in January is currently the most expensive (average of $1,500). 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 May 11, 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 May 11, 2026.
The most flights from BOS to S37 are scheduled on a Friday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 10% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 132 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 Saturday 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 10% 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 May 11, 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.
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
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.
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Complete your trip
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Search flights from Boston to Barcelona by cabin class
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Boston and Barcelona flights
Browse other Boston and Barcelona flight options. Last updated on May 11, 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 May 11, 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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$573 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$330 | Average$595 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$337 | Average$483 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$491 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$438 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$393 | Average$755 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$398 | Average$677 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$466 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$406 | Average$599 | FlexibilityNo cancel fee | On-timeN/A |