$263+ Cheap flights from Boston (BOS) to Barcelona
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Oct 17 — Oct 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston to Barcelona with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in January or February, booked 56 days in advance, depart on a Sunday or Monday 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 September 17, 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 September 17, 2026.
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:05 pm -
1 stop12h 10m
Tue 10/2012:30 pm -
1 stop13h 20m
Deal found 9/13![American Airlines logo]()
$491
This KLM deal was found by Cheapflights users on 9/12. 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.
Fri 9/257:20 pm -
Nonstop7h 15m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 9/12![KLM logo]()
$532
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:20 pm -
Nonstop7h 15m
Thu 10/110:55 am -
1 stop18h 15m
Deal found 9/12![Delta logo]()
$542
This FlightHub deal was found by Cheapflights users on 9/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:40 pm -
1 stop18h 35m
Thu 10/11:30 pm -
1 stop15h 58m
Deal found 9/12![British Airways logo]()
$545
This British Airways deal was found by Cheapflights users on 9/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:30 am -
1 stop19h 45m
Mon 11/308:20 pm -
1 stop24h 00m
Deal found 9/15![British Airways logo]()
$556
This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/285:45 am -
2 stops21h 50m
Sat 1/99:55 am -
1 stop16h 25m
Deal found 9/16![Multiple Airlines logo]()
$557
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 9/277:20 pm -
Nonstop7h 15m
Mon 10/196:20 am -
1 stop16h 16m
Deal found 9/16![Delta logo]()
$558
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/223:35 pm -
1 stop10h 25m
Tue 10/276:20 am -
2 stops22h 39m
Deal found 9/17![United Airlines logo]()
$559
This Air Canada deal was found by Cheapflights users on 9/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:45 am -
2 stops45h 20m
Fri 11/131:35 pm -
1 stop31h 18m
Deal found 9/16![Air Canada logo]()
$560
This ITA Airways deal was found by Cheapflights users on 9/15. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:20 pm -
1 stop11h 30m
Tue 11/104:50 pm -
1 stop26h 55m
Deal found 9/15![ITA Airways logo]()
$561
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:55 pm -
1 stop17h 55m
Thu 10/223:15 pm -
Nonstop8h 30m
Deal found 9/17![Delta logo]()
$562
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:40 am -
1 stop15h 20m
Sat 11/71:35 pm -
1 stop11h 27m
Deal found 9/15![United Airlines logo]()
$563
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 September 17, 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 September 17, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 2/1612:10 pm -
2 stops14h 50m
Sun 2/215:55 am -
2 stops14h 58m
Deal found 9/16![United Airlines logo]()
$578
This British Airways deal was found by Cheapflights users on 9/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:30 pm -
1 stop10h 15m
Sat 11/286:35 am -
1 stop13h 45m
Deal found 9/13![British Airways logo]()
$586
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/67:20 pm -
Nonstop7h 15m
Wed 10/143:15 pm -
Nonstop8h 30m
Deal found 9/16![Delta logo]()
$631
This KLM deal was found by Cheapflights users on 9/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:20 pm -
Nonstop7h 15m
Tue 10/63:15 pm -
Nonstop8h 30m
Deal found 9/13![KLM logo]()
$633
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:20 pm -
Nonstop7h 15m
Sun 10/46:10 am -
1 stop13h 29m
Deal found 9/15![Multiple Airlines logo]()
$709
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/14. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:45 pm -
2 stops12h 30m
Wed 12/29:10 pm -
1 stop23h 20m
Deal found 9/14![TAP AIR PORTUGAL logo]()
$736
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/810:00 pm -
2 stops18h 25m
Tue 10/136:00 am -
2 stops23h 59m
Deal found 9/16![United Airlines logo]()
$624
This KLM deal was found by Cheapflights users on 9/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:20 pm -
Nonstop7h 15m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 9/13![KLM logo]()
$633
This United Airlines deal was found by Cheapflights users on 9/16. 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 2/134:30 pm -
2 stops34h 30m
Sat 2/201:50 pm -
2 stops31h 03m
Deal found 9/16![United Airlines logo]()
$627
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:20 pm -
Nonstop7h 15m
Mon 10/53:15 pm -
Nonstop8h 30m
Deal found 9/14![Delta logo]()
$732
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:51 am -
2 stops15h 09m
Sun 11/111:50 am -
2 stops14h 30m
Deal found 9/15![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Fri 12/253:30 pm -
2 stops22h 25m
Thu 12/316:20 am -
1 stop20h 00m
Deal found 9/12![United Airlines logo]()
$737
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated September 17, 2026 and is based on user searches.
This KLM deal was found by Cheapflights users on 9/12. 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.
Fri 9/257:20 pm -
Nonstop7h 15m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 9/12![KLM logo]()
$532
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:20 pm -
Nonstop7h 15m
Thu 10/110:55 am -
1 stop18h 15m
Deal found 9/12![Delta logo]()
$542
This FlightHub deal was found by Cheapflights users on 9/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:40 pm -
1 stop18h 35m
Thu 10/11:30 pm -
1 stop15h 58m
Deal found 9/12![British Airways logo]()
$545
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:50 pm -
1 stop31h 10m
Sun 10/48:00 pm -
1 stop29h 55m
Deal found 9/14![Multiple Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 9/277:20 pm -
Nonstop7h 15m
Mon 10/196:20 am -
1 stop16h 16m
Deal found 9/16![Delta logo]()
$558
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 10/57:38 am -
2 stops18h 22m
Mon 10/127:55 am -
1 stop15h 45m
Deal found 9/16![United Airlines logo]()
$561
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:35 pm -
2 stops22h 55m
Mon 10/196:40 pm -
1 stop29h 00m
Deal found 9/16![Multiple Airlines logo]()
$565
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:05 pm -
1 stop12h 10m
Tue 10/2012:30 pm -
1 stop13h 20m
Deal found 9/13![American Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:40 am -
1 stop15h 20m
Sat 11/71:35 pm -
1 stop11h 27m
Deal found 9/15![United Airlines logo]()
$563
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:55 pm -
1 stop17h 55m
Thu 10/223:15 pm -
Nonstop8h 30m
Deal found 9/17![Delta logo]()
$562
This FlightHub deal was found by Cheapflights users on 9/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:15 pm -
1 stop19h 15m
Wed 10/2111:00 am -
1 stop13h 50m
Deal found 9/17![Aer Lingus logo]()
$564
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/223:35 pm -
1 stop10h 25m
Tue 10/276:20 am -
2 stops22h 39m
Deal found 9/17![United Airlines logo]()
$559
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 September 17, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$263
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:50 pm -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Icelandair logo]()
$264
This Booking.com deal was found by Cheapflights users on 9/15. 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 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Icelandair logo]()
$265
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:50 pm -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Icelandair logo]()
$266
This oojo deal was found by Cheapflights users on 9/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Icelandair logo]()
$267
This Trip.com deal was found by Cheapflights users on 9/15. 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 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 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Icelandair logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Mon 10/58:50 pm -
3 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 9/2310:55 pm -
Nonstop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![LEVEL logo]()
$277
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Icelandair logo]()
$278
This Icelandair deal was found by Cheapflights users on 9/13. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:50 pm -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Icelandair logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/211:00 pm -
2 stops32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:00 pm -
2 stops17h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$332
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 September 17, 2026.
Round-trip from | $491 (American Airlines) |
|---|---|
One-way from | $263 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $662 |
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 September 17, 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 10/4
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$295
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
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$295
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 10/5
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$295
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 10/10
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$295
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Tue 10/13
7:38 am-8:20 am
2 stops18h 42m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$299
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 10/12
9:51 am-8:20 am
2 stops16h 29m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$299
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 10/11
7:38 am-8:20 am
2 stops18h 42m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$299
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/26
5:10 pm-3:35 pm
1 stop16h 25m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$314
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Tue 10/27
5:55 pm-9:00 am
1 stop10h 05m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$314
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 10/5
7:05 pm-3:35 pm
1 stop14h 30m
Barcelona-El Prat
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$314
Showing 1-10 of 27 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
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
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 $518). Flying from Boston to Barcelona in June is currently the most expensive (average of $862). 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 September 17, 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 September 17, 2026.
The most flights from BOS to S37 are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Boston to Barcelona?
Airfare is below average for this route at the moment.
Boston to Barcelona flights typically cost between $542 and $822 in October.The cheapest round-trip price found within the last 5 days was $491 on American Airlines (Oct 13-Oct 20).
How often are flights from Boston to Barcelona delayed?
About 18% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 129 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 13% 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 September 17, 2026.
Read reviews from past customers who have flown Delta,Virgin Atlantic, 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
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Boston
Popular flights
Alternative routes for Boston to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Barcelona by cabin class
Find flights from Boston to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Barcelona flights
Browse other Boston and Barcelona flight options. Last updated on September 17, 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 September 17, 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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$325 | Average$772 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$348 | Average$546 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$459 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$740 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$440 | Average$504 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$441 | Average$791 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$449 | Average$675 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$453 | Average$676 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$455 | Average$706 | FlexibilityNo cancel fee | On-time76% |