$279+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
août 18 — août 251
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 24 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 juillet 19, 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 juillet 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
dim. 10/118:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
ven. 10/163:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 7/14![Icelandair logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
lun. 10/58:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
mar. 10/203:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 7/17![Icelandair logo]()
$435
This Icelandair deal was found by Cheapflights users on 7/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 10/48:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
sam. 11/712:25 pm
BCN
- BOS
1 stop11h 25m
Icelandair
Deal found 7/16![Icelandair logo]()
$436
This Icelandair deal was found by Cheapflights users on 7/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 10/48:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
dim. 11/82:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 7/16![Icelandair logo]()
$438
This Icelandair deal was found by Cheapflights users on 7/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/288:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
sam. 11/712:25 pm
BCN
- BOS
1 stop11h 25m
Icelandair
Deal found 7/16![Icelandair logo]()
$443
This Icelandair deal was found by Cheapflights users on 7/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/288:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
mer. 10/73:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 7/15![Icelandair logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 10/1811:35 pm
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
jeu. 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$470
This FlightHub deal was found by Cheapflights users on 7/16. 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.
lun. 10/58:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
mar. 11/1012:25 pm
BCN
- BOS
1 stop11h 25m
Icelandair
Deal found 7/16![Icelandair logo]()
$487
This FlightHub deal was found by Cheapflights users on 7/15. 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.
mar. 10/208:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
dim. 11/12:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 7/15![Icelandair logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/148:50 pm
BOS
- BCN
2 stops17h 40m
Multiple Airlines
jeu. 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/98:50 pm
BOS
- BCN
2 stops18h 40m
Multiple Airlines
mer. 10/216:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$496
This Mytrip deal was found by Cheapflights users on 7/14. 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.
lun. 8/105:45 am
BOS
- GRO
2 stops34h 15m
Multiple Airlines
lun. 8/2411:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$753
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 juillet 19, 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 juillet 19, 2026.
This Turkish Airlines deal was found by Cheapflights users on 7/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/249:50 pm
BOS
- BCN
1 stop19h 25m
Turkish Airlines
lun. 10/1212:10 pm
BCN
- BOS
1 stop37h 45m
Turkish Airlines
Deal found 7/15![Turkish Airlines logo]()
$649
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/1211:15 pm
BOS
- BCN
2 stops20h 15m
TAP AIR PORTUGAL
lun. 10/196:00 am
BCN
- BOS
2 stops20h 20m
TAP AIR PORTUGAL
Deal found 7/18![TAP AIR PORTUGAL logo]()
$739
This JetBlue deal was found by Cheapflights users on 7/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/148:13 pm
BOS
- BCN
Nonstop7h 32m
JetBlue
mer. 9/2312:50 pm
BCN
- BOS
Nonstop8h 38m
JetBlue
Deal found 7/17![JetBlue logo]()
$745
This Mytrip deal was found by Cheapflights users on 7/14. 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.
lun. 8/105:45 am
BOS
- GRO
2 stops34h 15m
Multiple Airlines
lun. 8/2411:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$753
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/77:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
jeu. 9/103:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/18![Delta logo]()
$765
This United Airlines deal was found by Cheapflights users on 7/17. 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.
jeu. 12/318:30 am
BOS
- BCN
2 stops19h 05m
United Airlines
sam. 1/91:35 pm
BCN
- BOS
2 stops27h 04m
United Airlines
Deal found 7/17![United Airlines logo]()
$788
This Virgin Atlantic deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/97:20 pm
BOS
- BCN
Nonstop7h 15m
Virgin Atlantic
mar. 10/203:15 pm
BCN
- BOS
Nonstop8h 30m
Virgin Atlantic
Deal found 7/18![Virgin Atlantic logo]()
$792
This KLM deal was found by Cheapflights users on 7/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/137:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
dim. 9/203:15 pm
BCN
- BOS
Nonstop8h 30m
KLM
Deal found 7/14![KLM logo]()
$799
This Turkish Airlines deal was found by Cheapflights users on 7/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/19:50 pm
BOS
- BCN
1 stop33h 40m
Turkish Airlines
dim. 10/42:35 pm
BCN
- BOS
1 stop35h 20m
Turkish Airlines
Deal found 7/15![Turkish Airlines logo]()
$740
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/810:45 pm
BOS
- BCN
2 stops12h 30m
TAP AIR PORTUGAL
jeu. 11/122:35 pm
BCN
- BOS
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 7/18![TAP AIR PORTUGAL logo]()
$765
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 10/39:05 am
BOS
- BCN
1 stop21h 45m
Delta
sam. 10/103:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/15![Delta logo]()
$795
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/14. 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.
jeu. 8/274:30 pm
BOS
- BCN
2 stops20h 50m
TAP AIR PORTUGAL
mer. 9/210:40 pm
BCN
- BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 7/14![TAP AIR PORTUGAL logo]()
$766
This Delta deal was found by Cheapflights users on 7/14. 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.
jeu. 8/137:25 pm
BOS
- BCN
Nonstop7h 10m
Delta
jeu. 8/203:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 7/14![Delta logo]()
$799
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated juillet 19, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated juillet 19, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/194:45 pm
BOS
- BCN
1 stop17h 15m
Condor
mer. 7/228:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/17![Condor logo]()
$558
This SmartFares deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/104:45 pm
BOS
- BCN
1 stop10h 45m
Condor
ven. 8/218:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/19![Condor logo]()
$547
This Mytrip deal was found by Cheapflights users on 7/14. 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.
lun. 8/105:45 am
BOS
- GRO
2 stops34h 15m
Multiple Airlines
lun. 8/2411:20 pm
GRO
- BOS
2 stops25h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$753
This LEVEL deal was found by Cheapflights users on 7/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/1311:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
jeu. 8/207:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/14![LEVEL logo]()
$556
This oojo deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/164:45 pm
BOS
- BCN
1 stop17h 15m
Condor
ven. 8/218:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/18![Condor logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/1910:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
mer. 8/266:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/18![LEVEL logo]()
$555
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/244:45 pm
BOS
- BCN
1 stop17h 15m
Condor
mar. 9/88:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/14![Condor logo]()
$536
This SmartFares deal was found by Cheapflights users on 7/14. 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.
lun. 8/244:45 pm
BOS
- BCN
1 stop10h 45m
Condor
lun. 8/318:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/14![Condor logo]()
$546
This CheapOair deal was found by Cheapflights users on 7/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/274:45 pm
BOS
- BCN
1 stop23h 25m
Condor
mer. 9/28:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/14![Condor logo]()
$551
This Booking.com deal was found by Cheapflights users on 7/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/304:45 pm
BOS
- BCN
1 stop23h 25m
Condor
jeu. 9/38:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/14![Condor logo]()
$561
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/314:45 pm
BOS
- BCN
1 stop10h 45m
Condor
mer. 9/98:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/15![Condor logo]()
$535
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 juillet 19, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated juillet 19, 2026.
This Mytrip deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/268:50 pm
BOS
- BCN
2 stops21h 35m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
mar. 10/208:50 pm
BOS
- BCN
3 stops18h 25m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
dim. 10/1111:00 pm
BOS
- BCN
3 stops42h 00m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
sam. 10/178:50 pm
BOS
- BCN
2 stops20h 35m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
mar. 10/138:50 pm
BOS
- BCN
3 stops17h 15m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
jeu. 10/158:50 pm
BOS
- BCN
2 stops15h 20m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$285
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/1510:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 7/15![LEVEL logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
mer. 11/187:50 pm
BOS
- BCN
2 stops17h 45m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
ven. 10/211:00 pm
BOS
- BCN
2 stops36h 25m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
dim. 9/611:00 pm
BOS
- BCN
2 stops41h 00m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/16. 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.
dim. 10/2511:40 pm
BOS
- BCN
3 stops18h 25m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$290
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 juillet 19, 2026.
Round-trip from | $434 (Kiwi.com) |
|---|---|
One-way from | $279 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $784 |
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 juillet 19, 2026.
Use the filters below to find and compare flights from Boston to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
jeu. 9/24
9:50 pm-11:15 pm
1 stop19h 25m
Barcelona-El Prat
lun. 10/12
12:10 pm-7:55 pm
1 stop37h 45m
$649
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
lun. 10/12
11:15 pm-1:30 am
2 stops20h 15m
Barcelona-El Prat
lun. 10/19
6:00 am-8:20 pm
2 stops20h 20m
$739
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
jeu. 10/1
9:50 pm-1:30 pm
1 stop33h 40m
Barcelona-El Prat
dim. 10/4
2:35 pm-7:55 pm
1 stop35h 20m
$740
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
lun. 9/14
8:13 pm-9:45 am
Nonstop7h 32m
Barcelona-El Prat
mer. 9/23
12:50 pm-3:28 pm
Nonstop8h 38m
$745
BostonGirona
BOS - GRO
BOSGRO
Boston Logan Intl
lun. 8/10
5:45 am-10:00 pm
2 stops34h 15m
Girona Costa Brava
lun. 8/24
11:20 pm-6:50 pm
2 stops25h 30m
$753
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
lun. 9/7
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
jeu. 9/10
3:15 pm-5:45 pm
Nonstop8h 30m
$765
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
dim. 11/8
10:45 pm-5:15 pm
2 stops12h 30m
Barcelona-El Prat
jeu. 11/12
2:35 pm-7:55 pm
1 stop11h 20m
$765
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
jeu. 8/27
4:30 pm-7:20 pm
2 stops20h 50m
Barcelona-El Prat
mer. 9/2
10:40 pm-8:20 pm
1 stop27h 40m
$766
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
jeu. 12/31
8:30 am-9:35 am
2 stops19h 05m
Barcelona-El Prat
sam. 1/9
1:35 pm-10:39 am
2 stops27h 04m
$788
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ven. 10/9
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
mar. 10/20
3:15 pm-5:45 pm
Nonstop8h 30m
$792
Showing 1-10 of 24 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 $496). Flying from Boston to Barcelona in June is currently the most expensive (average of $855). 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 juillet 19, 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 juillet 19, 2026.
The most flights from BOS to S37 are scheduled on a Thursday (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?
How often are flights from Boston to Barcelona delayed?
About 12% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 126 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, JetBlue have had the lowest number of delays on this route, with just 7% 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 23 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 juillet 19, 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.
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
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 juillet 19, 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 juillet 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Boston to Barcelona
Discover the top 10 airlines that operate flights from Boston to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated juillet 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$298 | Average$742 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$338 | Average$525 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$444 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$714 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$399 | Average$517 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$400 | Average$636 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$407 | Average$701 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$433 | Average$752 | FlexibilityNo cancel fee | On-time71% |