$262+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Sep 20 — Sep 271
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 January or February, booked 56 days in advance, depart on a Monday or Sunday 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 August 21, 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 August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/1811:35 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/18![Multiple Airlines logo]()
$482
This Vliegwinkel deal was found by Cheapflights users on 8/21. 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.
Thu 10/158:50 pm -
1 stop11h 55m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/21![Multiple Airlines logo]()
$487
This Mytrip deal was found by Cheapflights users on 8/20. 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 11/77:50 pm -
1 stop11h 50m
Sat 11/1412:25 pm -
1 stop11h 25m
Deal found 8/20![Icelandair logo]()
$494
This Mytrip deal was found by Cheapflights users on 8/17. 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 11/77:50 pm -
1 stop11h 50m
Sun 11/152:45 pm -
1 stop33h 05m
Deal found 8/17![Icelandair logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/48:50 pm -
2 stops20h 40m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/18![Multiple Airlines logo]()
$499
This Trip.com deal was found by Cheapflights users on 8/19. 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.
Sun 10/118:50 pm -
1 stop11h 55m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/19![Multiple Airlines logo]()
$501
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Wed 11/47:50 pm -
1 stop11h 50m
Tue 11/1712:25 pm -
1 stop11h 25m
Deal found 8/18![Icelandair logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 10/49:15 pm -
1 stop19h 40m
Sun 10/118:50 am -
2 stops18h 55m
Deal found 8/20![Multiple Airlines logo]()
$840
This Mytrip deal was found by Cheapflights users on 8/19. 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 10/38:50 pm -
2 stops19h 20m
Sat 10/1010:05 am -
3 stops34h 35m
Deal found 8/19![Multiple Airlines logo]()
$855
This Mytrip deal was found by Cheapflights users on 8/17. 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 10/110:50 am -
2 stops29h 35m
Thu 10/89:30 pm -
2 stops26h 34m
Deal found 8/17![Multiple Airlines logo]()
$863
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/15:25 pm -
1 stop12h 15m
Thu 10/811:20 pm -
2 stops25h 50m
Deal found 8/17![Multiple Airlines logo]()
$905
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/79:15 pm -
1 stop17h 40m
Sat 10/245:55 pm -
2 stops33h 50m
Deal found 8/17![Multiple Airlines logo]()
$926
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 August 21, 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 August 21, 2026.
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/267:13 pm -
1 stop31h 07m
Wed 10/712:15 pm -
1 stop27h 35m
Deal found 8/18![United Airlines logo]()
$622
This Delta deal was found by Cheapflights users on 8/18. 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.
Sat 9/197:20 pm -
Nonstop7h 15m
Mon 9/283:15 pm -
Nonstop8h 30m
Deal found 8/18![Delta logo]()
$632
This LEVEL deal was found by Cheapflights users on 8/20. 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 9/611:35 pm -
Nonstop7h 05m
Sun 9/137:10 pm -
Nonstop8h 35m
Deal found 8/20![LEVEL logo]()
$685
This Mytrip deal was found by Cheapflights users on 8/19. 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 10/38:50 pm -
2 stops19h 20m
Sat 10/1010:05 am -
3 stops34h 35m
Deal found 8/19![Multiple Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 8/16. 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 10/103:35 pm -
1 stop10h 25m
Wed 10/2112:15 pm -
2 stops27h 29m
Deal found 8/16![United Airlines logo]()
$625
This Delta deal was found by Cheapflights users on 8/16. 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 11/161:35 pm -
1 stop13h 00m
Tue 11/2410:50 am -
1 stop15h 33m
Deal found 8/16![Delta logo]()
$646
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/255:50 am -
1 stop20h 10m
Tue 10/63:15 pm -
1 stop14h 09m
Deal found 8/19![United Airlines logo]()
$645
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/254:40 pm -
1 stop20h 10m
Wed 10/73:15 pm -
Nonstop8h 30m
Deal found 8/20![Delta logo]()
$662
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/126:50 pm -
1 stop31h 10m
Sat 9/1912:15 pm -
2 stops30h 35m
Deal found 8/19![United Airlines logo]()
$655
This Delta deal was found by Cheapflights users on 8/16. 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.
Fri 10/98:25 pm -
1 stop10h 05m
Sat 10/173:15 pm -
Nonstop8h 30m
Deal found 8/16![Delta logo]()
$662
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 11/267:31 am -
1 stop23h 44m
Sun 11/291:35 pm -
1 stop26h 23m
Deal found 8/17![United Airlines logo]()
$657
This Mytrip deal was found by Cheapflights users on 8/17. 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 10/15:00 pm -
2 stops23h 25m
Thu 10/89:05 pm -
3 stops47h 40m
Deal found 8/17![Multiple Airlines logo]()
$905
This Delta deal was found by Cheapflights users on 8/16. 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 10/17:20 pm -
Nonstop7h 15m
Sat 10/33:15 pm -
Nonstop8h 30m
Deal found 8/16![Delta logo]()
$680
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/15:25 pm -
1 stop12h 15m
Thu 10/811:20 pm -
2 stops25h 50m
Deal found 8/17![Multiple Airlines logo]()
$905
This Delta deal was found by Cheapflights users on 8/20. 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 9/137:05 pm -
1 stop14h 30m
Sat 9/193:15 pm -
Nonstop8h 30m
Deal found 8/20![Delta logo]()
$681
This Mytrip deal was found by Cheapflights users on 8/20. 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 10/411:00 pm -
2 stops17h 55m
Sun 10/1110:10 am -
2 stops35h 00m
Deal found 8/20![Multiple Airlines logo]()
$930
This Mytrip deal was found by Cheapflights users on 8/17. 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 10/79:15 pm -
1 stop17h 40m
Sat 10/2410:05 am -
3 stops40h 50m
Deal found 8/17![Multiple Airlines logo]()
$952
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated August 21, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/611:35 pm -
Nonstop7h 05m
Thu 9/1010:25 am -
1 stop34h 30m
Deal found 8/21![Multiple Airlines logo]()
$505
This Justfly.com deal was found by Cheapflights users on 8/16. 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 9/1610:55 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/16![LEVEL logo]()
$527
This LEVEL deal was found by Cheapflights users on 8/16. 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 9/2011:35 pm -
Nonstop7h 05m
Sun 9/277:10 pm -
Nonstop8h 35m
Deal found 8/16![LEVEL logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/2410:55 pm -
Nonstop7h 05m
Thu 10/16:30 pm -
Nonstop8h 35m
Deal found 8/18![LEVEL logo]()
$540
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/2711:35 pm -
Nonstop7h 05m
Wed 10/76:30 pm -
Nonstop8h 35m
Deal found 8/17![LEVEL logo]()
$543
This Super.com deal was found by Cheapflights users on 8/17. 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.
Wed 9/3010:55 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/17![LEVEL logo]()
$507
This LEVEL deal was found by Cheapflights users on 8/18. 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.
Wed 9/3010:55 pm -
Nonstop7h 05m
Sun 10/117:10 pm -
Nonstop8h 35m
Deal found 8/18![LEVEL logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/3010:55 pm -
Nonstop7h 05m
Wed 10/146:30 pm -
Nonstop8h 35m
Deal found 8/20![LEVEL logo]()
$545
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 August 21, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Mytrip deal was found by Cheapflights users on 8/19. 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 9/278:50 pm -
1 stop11h 55m
Deal found 8/19![Icelandair logo]()
$262
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:50 pm -
1 stop11h 55m
Deal found 8/17![Icelandair logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 11/147:50 pm -
1 stop11h 50m
Deal found 8/17![Icelandair logo]()
$267
This Booking.com deal was found by Cheapflights users on 8/17. 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.
Tue 9/298:50 pm -
1 stop11h 55m
Deal found 8/17![Icelandair logo]()
$268
This FlightHub deal was found by Cheapflights users on 8/19. 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 10/2511:40 pm -
1 stop30h 50m
Deal found 8/19![Icelandair logo]()
$269
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm -
1 stop11h 55m
Deal found 8/17![Icelandair logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/138:50 pm -
1 stop11h 55m
Deal found 8/17![Icelandair logo]()
$277
This eDestinos deal was found by Cheapflights users on 8/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:20 pm -
Nonstop7h 15m
Deal found 8/16![Virgin Atlantic logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/1111:35 pm -
Nonstop7h 05m
Deal found 8/18![LEVEL logo]()
$283
This LEVEL deal was found by Cheapflights users on 8/17. 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.
Wed 9/3010:55 pm -
Nonstop7h 05m
Deal found 8/17![LEVEL logo]()
$284
This eDestinos deal was found by Cheapflights users on 8/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:36 am -
1 stop13h 09m
Deal found 8/16![Iberia logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 11/157:50 pm -
2 stops17h 45m
Deal found 8/17![Multiple Airlines logo]()
$286
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 August 21, 2026.
Round-trip from | $482 (Kiwi.com) |
|---|---|
One-way from | $262 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $732 |
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 7,457,451 searches. Data last updated August 21, 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 Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/26
7:13 pm-8:20 am
1 stop31h 07m
Barcelona-El Prat
Wed 10/7
12:15 pm-9:50 am
1 stop27h 35m
$622
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 10/10
3:35 pm-8:00 am
1 stop10h 25m
Barcelona-El Prat
Wed 10/21
12:15 pm-9:44 am
2 stops27h 29m
$625
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/19
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Mon 9/28
3:15 pm-5:45 pm
Nonstop8h 30m
$632
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/25
5:50 am-8:00 am
1 stop20h 10m
Barcelona-El Prat
Tue 10/6
3:15 pm-11:24 pm
1 stop14h 09m
$645
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 11/16
1:35 pm-8:35 am
1 stop13h 00m
Barcelona-El Prat
Tue 11/24
10:50 am-8:23 pm
1 stop15h 33m
$646
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/12
6:50 pm-8:00 am
1 stop31h 10m
Barcelona-El Prat
Sat 9/19
12:15 pm-12:50 pm
2 stops30h 35m
$655
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Thu 11/26
7:31 am-1:15 pm
1 stop23h 44m
Barcelona-El Prat
Sun 11/29
1:35 pm-9:58 am
1 stop26h 23m
$657
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/25
4:40 pm-6:50 pm
1 stop20h 10m
Barcelona-El Prat
Wed 10/7
3:15 pm-5:45 pm
Nonstop8h 30m
$662
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 10/9
8:25 pm-12:30 pm
1 stop10h 05m
Barcelona-El Prat
Sat 10/17
3:15 pm-5:45 pm
Nonstop8h 30m
$662
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Thu 10/1
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Sat 10/3
3:15 pm-5:45 pm
Nonstop8h 30m
$680
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-REU
BOS-GRO
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-REU
BOS-GRO
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 $502). Flying from Boston to Barcelona in June is currently the most expensive (average of $859). 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 August 21, 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 August 21, 2026.
The most flights from BOS to S37 are scheduled on a Wednesday (9 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?
Airfare is below average for this route at the moment.
Boston to Barcelona flights typically cost between $549 and $814 in October.The cheapest round-trip price found within the last 5 days was $482 on Multiple Airlines (Oct 18-Oct 21).
How often are flights from Boston to Barcelona delayed?
About 16% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 131 minutes.
What is the most punctual flight time for Boston to Barcelona flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday 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 12% 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 55 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 August 21, 2026.
Read reviews from past customers who have flown Delta,American Airlines, andJetBlue 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
7.8
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
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
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 August 21, 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 August 21, 2026.
Popular flight searches
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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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$780 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$347 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$453 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$722 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$434 | Average$469 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$435 | Average$623 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$791 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$443 | Average$646 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$447 | Average$755 | FlexibilityNo cancel fee | On-time71% |