$263+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Sep 14 — Sep 211
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 Thursday and return on a Thursday
Cheap flight deals from Boston to Barcelona
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to BarcelonaExplore the most affordable flight options available from Boston to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 15, 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 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 8/13![Multiple Airlines logo]()
$470
This Mytrip deal was found by Cheapflights users on 8/15. 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 11/187:50 pm -
1 stop11h 50m
Tue 11/2412:25 pm -
1 stop11h 25m
Deal found 8/15![Icelandair logo]()
$493
This flugladen.de deal was found by Cheapflights users on 8/10. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:50 pm -
1 stop11h 55m
Sun 10/187:10 pm -
Nonstop8h 35m
Deal found 8/10![Multiple Airlines logo]()
$499
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares 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 8/10![Icelandair logo]()
$500
This FlightHub deal was found by Cheapflights users on 8/15. 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 11/1012:25 pm -
1 stop11h 25m
Deal found 8/15![Icelandair logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10/1410:55 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/12![LEVEL logo]()
$505
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 10/148:50 pm -
2 stops20h 15m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/14![Multiple Airlines logo]()
$507
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 10/118:50 pm -
2 stops37h 00m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/14![Multiple Airlines logo]()
$508
This Mytrip deal was found by Cheapflights users on 8/14. 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 9/119:15 pm -
1 stop19h 25m
Fri 9/186:15 am -
1 stop18h 35m
Deal found 8/14![Multiple Airlines logo]()
$775
This Mytrip deal was found by Cheapflights users on 8/13. 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 9/279:35 am -
3 stops31h 20m
Sun 10/42:50 pm -
3 stops35h 30m
Deal found 8/13![Multiple Airlines logo]()
$849
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 15, 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 15, 2026.
This LEVEL deal was found by Cheapflights users on 8/10. 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.
Sun 9/2011:35 pm -
Nonstop7h 05m
Sun 9/277:10 pm -
Nonstop8h 35m
Deal found 8/10![LEVEL logo]()
$540
This Delta deal was found by Cheapflights users on 8/11. 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 9/267:20 pm -
Nonstop7h 15m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 8/11![Delta logo]()
$631
This KLM deal was found by Cheapflights users on 8/12. 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 10/149:45 pm -
1 stop11h 05m
Mon 10/193:15 pm -
Nonstop8h 30m
Deal found 8/12![Multiple Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/148:30 pm -
1 stop30h 30m
Fri 9/2512:15 pm -
1 stop32h 26m
Deal found 8/13![United Airlines logo]()
$651
This KLM deal was found by Cheapflights users on 8/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:20 pm -
Nonstop7h 15m
Mon 10/2610:05 am -
1 stop14h 56m
Deal found 8/10![KLM logo]()
$659
This Delta deal was found by Cheapflights users on 8/11. 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 10/209:10 am -
1 stop17h 35m
Sat 10/243:15 pm -
Nonstop8h 30m
Deal found 8/11![Delta logo]()
$636
This United Airlines deal was found by Cheapflights users on 8/14. 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 9/148:30 pm -
1 stop30h 30m
Sat 9/1912:15 pm -
1 stop27h 35m
Deal found 8/14![United Airlines logo]()
$651
This Delta deal was found by Cheapflights users on 8/13. 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 10/197:20 pm -
Nonstop7h 15m
Mon 11/1610:30 am -
1 stop14h 25m
Deal found 8/13![Delta logo]()
$642
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/2412:36 pm -
2 stops13h 24m
Mon 9/2812:15 pm -
2 stops16h 30m
Deal found 8/12![United Airlines logo]()
$653
This Mytrip deal was found by Cheapflights users on 8/14. 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 9/119:15 pm -
1 stop19h 25m
Fri 9/186:15 am -
1 stop18h 35m
Deal found 8/14![Multiple Airlines logo]()
$775
This Delta deal was found by Cheapflights users on 8/13. 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 10/147:20 pm -
Nonstop7h 15m
Fri 11/1310:50 am -
1 stop15h 33m
Deal found 8/13![Delta logo]()
$642
This Delta deal was found by Cheapflights users on 8/13. 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 9/275:10 pm -
1 stop15h 40m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 8/13![Delta logo]()
$650
This Mytrip deal was found by Cheapflights users on 8/13. 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 9/275:50 am -
2 stops35h 05m
Sun 10/42:50 pm -
3 stops35h 30m
Deal found 8/13![Multiple Airlines logo]()
$853
This Delta deal was found by Cheapflights users on 8/13. 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 10/84:45 pm -
1 stop10h 00m
Sat 10/173:15 pm -
Nonstop8h 30m
Deal found 8/13![Delta logo]()
$662
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated August 15, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated August 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 8/2011:35 pm -
Nonstop7h 05m
Thu 8/277:10 pm -
Nonstop8h 35m
Deal found 8/12![LEVEL logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 8/2311:35 pm -
Nonstop7h 05m
Thu 8/277:10 pm -
Nonstop8h 35m
Deal found 8/11![LEVEL logo]()
$545
This Mytrip deal was found by Cheapflights users on 8/14. 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 9/119:15 pm -
1 stop19h 25m
Fri 9/186:15 am -
1 stop18h 35m
Deal found 8/14![Multiple Airlines logo]()
$775
This Justfly.com deal was found by Cheapflights users on 8/14. 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 8/14![LEVEL logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/2011:35 pm -
Nonstop7h 05m
Thu 10/16:30 pm -
Nonstop8h 35m
Deal found 8/11![LEVEL logo]()
$539
This LEVEL deal was found by Cheapflights users on 8/12. 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 8/12![LEVEL logo]()
$540
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Wed 9/2310:55 pm -
Nonstop7h 05m
Wed 9/306:30 pm -
Nonstop8h 35m
Deal found 8/10![Iberia logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 8/12. 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
Wed 9/306:30 pm -
Nonstop8h 35m
Deal found 8/12![Iberia logo]()
$549
This Mytrip deal was found by Cheapflights users on 8/13. 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 9/279:35 am -
3 stops31h 20m
Sun 10/42:50 pm -
3 stops35h 30m
Deal found 8/13![Multiple Airlines logo]()
$849
This SmartFares deal was found by Cheapflights users on 8/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm -
1 stop11h 55m
Mon 10/53:45 pm -
1 stop33h 05m
Deal found 8/14![Icelandair logo]()
$558
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 15, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
This Mytrip deal was found by Cheapflights users on 8/13. 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 9/298:50 pm -
1 stop11h 55m
Deal found 8/13![Icelandair logo]()
$263
This Cheapflightsfares deal was found by Cheapflights users on 8/11. 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 8/11![Icelandair logo]()
$264
This Gotogate deal was found by Cheapflights users on 8/13. 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.
Sun 9/278:50 pm -
1 stop11h 55m
Deal found 8/13![Icelandair logo]()
$265
This FlightHub deal was found by Cheapflights users on 8/11. 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 10/118:50 pm -
1 stop11h 55m
Deal found 8/11![Icelandair logo]()
$267
This Icelandair deal was found by Cheapflights users on 8/12. 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 Icelandair 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 8/12![Icelandair logo]()
$268
This Cheapflightsfares deal was found by Cheapflights users on 8/11. 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 8/11![Icelandair logo]()
$271
This Mytrip deal was found by Cheapflights users on 8/12. 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 10/48:50 pm -
2 stops20h 40m
Deal found 8/12![Multiple Airlines logo]()
$274
This Icelandair deal was found by Cheapflights users on 8/12. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:50 pm -
1 stop11h 50m
Deal found 8/12![Icelandair logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10/2511:40 pm -
1 stop30h 50m
Deal found 8/12![Icelandair logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Fri 9/1111:35 pm -
1 stop16h 25m
Deal found 8/10![Multiple Airlines logo]()
$443
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 15, 2026.
Round-trip from | $470 (Kiwi.com) |
|---|---|
One-way from | $263 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $724 |
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 August 15, 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 Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 9/20
11:35 pm-12:40 pm
Nonstop7h 05m
Barcelona-El Prat
Sun 9/27
7:10 pm-9:45 pm
Nonstop8h 35m
$540
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/26
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Thu 10/1
3:15 pm-5:45 pm
Nonstop8h 30m
$631
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Tue 10/20
9:10 am-8:45 am
1 stop17h 35m
Barcelona-El Prat
Sat 10/24
3:15 pm-5:45 pm
Nonstop8h 30m
$636
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 10/19
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Mon 11/16
10:30 am-6:55 pm
1 stop14h 25m
$642
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Wed 10/14
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Fri 11/13
10:50 am-8:23 pm
1 stop15h 33m
$642
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Wed 10/14
9:45 pm-2:50 pm
1 stop11h 05m
Barcelona-El Prat
Mon 10/19
3:15 pm-5:45 pm
Nonstop8h 30m
$650
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 9/27
5:10 pm-2:50 pm
1 stop15h 40m
Barcelona-El Prat
Thu 10/1
3:15 pm-5:45 pm
Nonstop8h 30m
$650
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 9/14
8:30 pm-9:00 am
1 stop30h 30m
Barcelona-El Prat
Fri 9/25
12:15 pm-2:41 pm
1 stop32h 26m
$651
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 9/14
8:30 pm-9:00 am
1 stop30h 30m
Barcelona-El Prat
Sat 9/19
12:15 pm-9:50 am
1 stop27h 35m
$651
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Thu 9/24
12:36 pm-8:00 am
2 stops13h 24m
Barcelona-El Prat
Mon 9/28
12:15 pm-10:45 pm
2 stops16h 30m
$653
Showing 1-10 of 26 resultsSorted by cheapest first
Best time to book a flight from Boston to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boston with our price prediction graph.
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Barcelona
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $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 15, 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 15, 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 $587 and $830 in October.The cheapest round-trip price found within the last 5 days was $470 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 15, 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.
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Food
7.2
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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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 August 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$782 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$345 | Average$535 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$459 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$722 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$431 | Average$753 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$435 | Average$626 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$440 | Average$473 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$441 | Average$791 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$443 | Average$644 | FlexibilityNo cancel fee | On-timeN/A |