$264+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Sep 6 — Sep 131
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 38 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 7, 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 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/7![Multiple Airlines logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Thu 10/226:30 pm -
Nonstop8h 35m
Deal found 8/4![Multiple Airlines logo]()
$480
This deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:30 pm -
1 stop14h 55m
Tue 11/1010:05 am -
1 stop15h 35m
Deal found 8/4![British Airways logo]()
$485
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:50 pm -
1 stop11h 50m
Sat 11/1412:25 pm -
1 stop11h 25m
Deal found 8/7![Icelandair logo]()
$497
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:50 pm -
1 stop11h 50m
Sun 11/222:45 pm -
1 stop33h 05m
Deal found 8/7![Icelandair logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/4![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:50 pm -
2 stops20h 15m
Sun 10/187:10 pm -
Nonstop8h 35m
Deal found 8/6![Multiple Airlines logo]()
$503
This FlightHub deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:50 pm -
1 stop11h 50m
Sun 11/152:45 pm -
1 stop33h 05m
Deal found 8/7![Icelandair logo]()
$505
This Mytrip deal was found by Cheapflights users on 8/5. 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 9/43:35 pm -
3 stops25h 05m
Fri 9/116:15 am -
2 stops22h 25m
Deal found 8/5![Multiple Airlines logo]()
$1,006
This Mytrip deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am -
2 stops34h 55m
Thu 8/139:55 pm -
3 stops38h 55m
Deal found 8/6![Multiple Airlines logo]()
$1,531
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 7, 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 7, 2026.
This LEVEL deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL 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 8/4![LEVEL logo]()
$546
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:41 pm -
1 stop32h 19m
Sun 11/151:35 pm -
2 stops32h 15m
Deal found 8/4![United Airlines logo]()
$626
This KLM deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:20 pm -
Nonstop7h 15m
Wed 10/213:15 pm -
Nonstop8h 30m
Deal found 8/4![KLM logo]()
$631
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:00 am -
1 stop22h 50m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 8/3![Delta logo]()
$636
This Mytrip deal was found by Cheapflights users on 8/5. 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 9/43:35 pm -
3 stops25h 05m
Fri 9/116:15 am -
2 stops22h 25m
Deal found 8/5![Multiple Airlines logo]()
$1,006
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:10 pm -
1 stop9h 50m
Mon 10/53:15 pm -
Nonstop8h 30m
Deal found 8/6![Delta logo]()
$650
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/1610:50 am -
1 stop16h 30m
Wed 10/2112:15 pm -
2 stops27h 29m
Deal found 8/5![United Airlines logo]()
$659
This KLM deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:20 pm -
Nonstop7h 15m
Sat 10/33:15 pm -
Nonstop8h 30m
Deal found 8/6![KLM logo]()
$680
This Delta deal was found by Cheapflights users on 8/5. 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
Sun 10/46:10 am -
1 stop15h 05m
Deal found 8/5![Delta logo]()
$659
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:35 pm -
2 stops14h 00m
Fri 9/2512:15 pm -
2 stops16h 30m
Deal found 8/4![United Airlines logo]()
$676
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/317:23 pm -
1 stop30h 57m
Thu 9/1012:15 pm -
2 stops27h 33m
Deal found 8/5![United Airlines logo]()
$676
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:45 pm -
1 stop11h 50m
Sun 10/46:10 am -
1 stop15h 05m
Deal found 8/3![Delta logo]()
$678
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:25 pm -
Nonstop7h 10m
Fri 8/2110:55 am -
1 stop17h 48m
Deal found 8/3![Delta logo]()
$686
This Mytrip deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am -
2 stops34h 55m
Thu 8/139:55 pm -
3 stops38h 55m
Deal found 8/6![Multiple Airlines logo]()
$1,531
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated August 7, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am -
2 stops34h 55m
Thu 8/139:55 pm -
3 stops38h 55m
Deal found 8/6![Multiple Airlines logo]()
$1,531
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:55 pm -
Nonstop7h 05m
Thu 8/277:10 pm -
Nonstop8h 35m
Deal found 8/6![LEVEL logo]()
$544
This LEVEL deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL 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 8/4![LEVEL logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/4![LEVEL logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:35 pm -
Nonstop7h 05m
Thu 9/36:30 pm -
Nonstop8h 35m
Deal found 8/3![LEVEL logo]()
$548
This Expedia deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:45 pm -
1 stop10h 45m
Fri 8/288:00 am -
1 stop12h 45m
Deal found 8/4![Condor logo]()
$538
This Mytrip deal was found by Cheapflights users on 8/5. 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 9/43:35 pm -
3 stops25h 05m
Fri 9/116:15 am -
2 stops22h 25m
Deal found 8/5![Multiple Airlines logo]()
$1,006
This Justfly.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/7![LEVEL logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Wed 9/306:30 pm -
Nonstop8h 35m
Deal found 8/7![LEVEL logo]()
$541
This FlightHub deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/208:50 pm -
1 stop11h 55m
Sun 11/12:45 pm -
1 stop33h 05m
Deal found 8/6![Icelandair logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/7![LEVEL logo]()
$539
This LEVEL deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:55 pm -
Nonstop7h 05m
Wed 9/306:30 pm -
Nonstop8h 35m
Deal found 8/5![LEVEL logo]()
$540
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 7, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 8/5![Icelandair logo]()
$264
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip 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 8/7![Icelandair logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:50 pm -
1 stop11h 55m
Deal found 8/5![Icelandair logo]()
$266
This FlightHub deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:35 pm -
Nonstop7h 05m
Deal found 8/3![LEVEL logo]()
$267
This Mytrip deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:50 pm -
1 stop11h 55m
Deal found 8/4![Icelandair logo]()
$268
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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.
Sun 9/138:50 pm -
1 stop11h 55m
Deal found 8/5![Icelandair logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:50 pm -
2 stops31h 10m
Deal found 8/7![Multiple Airlines logo]()
$273
This Icelandair deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:50 pm -
1 stop11h 55m
Deal found 8/7![Icelandair logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 8/7![Icelandair logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:50 pm -
2 stops34h 55m
Deal found 8/7![Multiple Airlines logo]()
$280
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 7, 2026.
Round-trip from | $475 (Kiwi.com) |
|---|---|
One-way from | $264 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $708 |
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 7, 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
Thu 8/20
11:35 pm-12:40 pm
Nonstop7h 05m
Barcelona-El Prat
Thu 8/27
7:10 pm-9:45 pm
Nonstop8h 35m
$546
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 10/30
7:41 pm-9:00 am
1 stop32h 19m
Barcelona-El Prat
Sun 11/15
1:35 pm-3:50 pm
2 stops32h 15m
$626
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 10/21
3:15 pm-5:45 pm
Nonstop8h 30m
$631
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 9/27
8:00 am-12:50 pm
1 stop22h 50m
Barcelona-El Prat
Thu 10/1
3:15 pm-5:45 pm
Nonstop8h 30m
$636
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/25
5:10 pm-9:00 am
1 stop9h 50m
Barcelona-El Prat
Mon 10/5
3:15 pm-5:45 pm
Nonstop8h 30m
$650
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Wed 9/16
10:50 am-9:20 am
1 stop16h 30m
Barcelona-El Prat
Wed 10/21
12:15 pm-9:44 am
2 stops27h 29m
$659
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
Sun 10/4
6:10 am-3:15 pm
1 stop15h 05m
$659
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/18
3:35 pm-11:35 am
2 stops14h 00m
Barcelona-El Prat
Fri 9/25
12:15 pm-10:45 pm
2 stops16h 30m
$676
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 8/31
7:23 pm-8:20 am
1 stop30h 57m
Barcelona-El Prat
Thu 9/10
12:15 pm-9:48 am
2 stops27h 33m
$676
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Thu 10/1
9:45 pm-3:35 pm
1 stop11h 50m
Barcelona-El Prat
Sun 10/4
6:10 am-3:15 pm
1 stop15h 05m
$678
Showing 1-10 of 25 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 $497). Flying from Boston to Barcelona in June is currently the most expensive (average of $857). 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 7, 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 7, 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 $577 and $822 in October.The cheapest round-trip price found within the last 5 days was $475 on Multiple Airlines (Oct 18-Oct 21).
How often are flights from Boston to Barcelona delayed?
About 14% 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 in the early afternoon 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 11% 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 37 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 7, 2026.
Read reviews from past customers who have flown Delta,TAP AIR PORTUGAL, 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.
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
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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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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$787 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$339 | Average$533 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$454 | 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$627 | 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$641 | FlexibilityNo cancel fee | On-timeN/A |