$304+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Aug 3 — Aug 101
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 87 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 July 4, 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 July 4, 2026.
This LEVEL deal was found by Cheapflights users on 6/30. 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
BOS
- BCN
Nonstop7h 05m
LEVEL
Sun 9/277:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/30![LEVEL logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 10/411:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Thu 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/1![LEVEL logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 10/216:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/29![LEVEL logo]()
$462
This Iberia deal was found by Cheapflights users on 6/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Thu 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 6/30![Iberia logo]()
$470
This LEVEL deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 10/76:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/30![LEVEL logo]()
$473
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/1010:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 9/166:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/30![LEVEL logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/1311:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Wed 9/236:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/29![LEVEL logo]()
$475
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 9/2410:55 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Thu 10/16:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 6/30![Iberia logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/1311:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Wed 9/236:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 6/29![Iberia logo]()
$481
This Iberia deal was found by Cheapflights users on 6/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:55 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Wed 9/166:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 6/29![Iberia logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/910:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Sun 9/207:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 6/30![LEVEL logo]()
$519
This Trip.com deal was found by Cheapflights users on 6/30. 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 7/54:45 pm
BOS
- BCN
1 stop17h 15m
Condor
Wed 7/88:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 6/30![Condor logo]()
$523
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 July 4, 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 July 4, 2026.
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/2. 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.
Wed 10/2111:15 pm
BOS
- BCN
2 stops20h 15m
TAP AIR PORTUGAL
Wed 10/289:10 pm
BCN
- BOS
1 stop23h 30m
TAP AIR PORTUGAL
Deal found 7/2![TAP AIR PORTUGAL logo]()
$639
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:37 pm
BOS
- BCN
1 stop32h 23m
United Airlines
Thu 11/121:35 pm
BCN
- BOS
1 stop26h 23m
United Airlines
Deal found 7/3![United Airlines logo]()
$686
This KLM deal was found by Cheapflights users on 6/30. 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 10/27:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Tue 10/610:55 am
BCN
- BOS
1 stop14h 11m
KLM
Deal found 6/30![KLM logo]()
$750
This Delta deal was found by Cheapflights users on 6/30. 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 9/812:20 pm
BOS
- BCN
1 stop18h 30m
Delta
Tue 9/223:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 6/30![Delta logo]()
$750
This Mytrip deal was found by Cheapflights users on 7/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:00 am
BOS
- GRO
2 stops34h 55m
Multiple Airlines
Wed 10/711:30 pm
GRO
- BOS
2 stops22h 40m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$782
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/3. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:05 pm
BOS
- BCN
1 stop13h 55m
TAP AIR PORTUGAL
Fri 10/1610:40 pm
BCN
- BOS
2 stops27h 40m
TAP AIR PORTUGAL
Deal found 7/3![TAP AIR PORTUGAL logo]()
$687
This Delta deal was found by Cheapflights users on 6/29. 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 8/195:10 pm
BOS
- BCN
1 stop18h 00m
Delta
Sat 8/293:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 6/29![Delta logo]()
$764
This KLM deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:25 pm
BOS
- BCN
Nonstop7h 10m
KLM
Sat 8/223:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 7/2![KLM logo]()
$799
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/3. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:15 pm
BOS
- BCN
2 stops20h 15m
TAP AIR PORTUGAL
Sun 8/305:45 pm
BCN
- BOS
2 stops32h 35m
TAP AIR PORTUGAL
Deal found 7/3![TAP AIR PORTUGAL logo]()
$768
This Delta deal was found by Cheapflights users on 7/2. 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 9/67:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
Sat 9/123:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/2![Delta logo]()
$799
This KLM deal was found by Cheapflights users on 7/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Wed 7/293:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 7/3![KLM logo]()
$800
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:30 pm
BOS
- REU
2 stops27h 55m
Multiple Airlines
Thu 9/179:30 pm
REU
- BOS
2 stops26h 34m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$925
This Delta deal was found by Cheapflights users on 7/3. 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 7/197:20 pm
BOS
- BCN
Nonstop7h 15m
Delta
Thu 7/233:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 7/3![Delta logo]()
$800
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated July 4, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/29. 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.
Sat 7/44:45 pm
BOS
- BCN
1 stop10h 45m
Condor
Tue 7/75:00 pm
BCN
- BOS
1 stop27h 45m
Condor
Deal found 6/29![Condor logo]()
$543
This SmartFares deal was found by Cheapflights users on 7/1. 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.
Sat 7/44:45 pm
BOS
- BCN
1 stop10h 45m
Condor
Mon 7/68:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/1![Condor logo]()
$546
This Trip.com deal was found by Cheapflights users on 6/30. 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 7/54:45 pm
BOS
- BCN
1 stop17h 15m
Condor
Wed 7/88:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 6/30![Condor logo]()
$523
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/166:00 am
BOS
- BCN
2 stops33h 05m
Multiple Airlines
Wed 8/2611:10 pm
BCN
- BOS
2 stops29h 28m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$530
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/193:35 pm
BOS
- BCN
2 stops23h 40m
Multiple Airlines
Sat 8/295:45 am
BCN
- BOS
2 stops18h 22m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Wed 8/194:45 pm
BOS
- BCN
1 stop10h 40m
Condor
Thu 8/278:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/3![Condor logo]()
$542
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/2410:50 am
BOS
- BCN
2 stops27h 55m
Multiple Airlines
Wed 9/211:10 pm
BCN
- BOS
2 stops21h 31m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$528
This Vliegwinkel deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:45 pm
BOS
- BCN
1 stop10h 45m
Condor
Wed 9/28:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 6/30![Condor logo]()
$531
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/2510:50 am
BOS
- BCN
2 stops29h 45m
Multiple Airlines
Mon 8/315:45 am
BCN
- BOS
2 stops34h 05m
Multiple Airlines
Deal found 6/30![Multiple Airlines 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 July 4, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This LEVEL deal was found by Cheapflights users on 6/30. 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 7/2311:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 6/30![LEVEL logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 7/2611:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 6/29![LEVEL logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 12/267:50 pm
BOS
- BCN
1 stop11h 50m
Icelandair
Deal found 7/1![Icelandair logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/2310:04 am
BOS
- BCN
2 stops32h 36m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$307
This LEVEL deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 7/2![LEVEL logo]()
$308
This Iberia deal was found by Cheapflights users on 6/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2311:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 6/30![Iberia logo]()
$309
This Trip.com deal was found by Cheapflights users on 6/30. 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.
Wed 8/58:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 6/30![Icelandair logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 10/1911:00 pm
BOS
- BCN
2 stops20h 15m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$311
This Super.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/211:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 7/1![Iberia logo]()
$312
This oojo deal was found by Cheapflights users on 6/30. 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.
Thu 10/18:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 6/30![Icelandair logo]()
$313
This Icelandair deal was found by Cheapflights users on 7/3. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/3![Icelandair logo]()
$314
This eDestinos deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:20 pm
BOS
- BCN
Nonstop7h 15m
Virgin Atlantic
Deal found 7/2![Virgin Atlantic logo]()
$315
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 July 4, 2026.
Round-trip from | $460 (LEVEL) |
|---|---|
One-way from | $304 (LEVEL) |
Popular in | June |
Cheapest in | January |
Average price | $768 |
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 July 4, 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
Wed 10/21
11:15 pm-1:30 am
2 stops20h 15m
Barcelona-El Prat
Wed 10/28
9:10 pm-3:40 pm
1 stop23h 30m
$639
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 10/31
7:37 pm-9:00 am
1 stop32h 23m
Barcelona-El Prat
Thu 11/12
1:35 pm-9:58 am
1 stop26h 23m
$686
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 10/4
6:05 pm-2:00 pm
1 stop13h 55m
Barcelona-El Prat
Fri 10/16
10:40 pm-8:20 pm
2 stops27h 40m
$687
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 10/2
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Tue 10/6
10:55 am-7:06 pm
1 stop14h 11m
$750
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 9/8
12:20 pm-12:50 pm
1 stop18h 30m
Barcelona-El Prat
Tue 9/22
3:15 pm-5:45 pm
Nonstop8h 30m
$750
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 8/19
5:10 pm-5:10 pm
1 stop18h 00m
Barcelona-El Prat
Sat 8/29
3:15 pm-5:41 pm
Nonstop8h 26m
$764
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 8/26
11:15 pm-1:30 am
2 stops20h 15m
Barcelona-El Prat
Sun 8/30
5:45 pm-8:20 pm
2 stops32h 35m
$768
BostonGirona
BOS - GRO
BOSGRO
Boston Logan Intl
Wed 9/30
6:00 am-10:55 pm
2 stops34h 55m
Girona Costa Brava
Wed 10/7
11:30 pm-4:10 pm
2 stops22h 40m
$782
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 8/12
7:25 pm-8:35 am
Nonstop7h 10m
Barcelona-El Prat
Sat 8/22
3:15 pm-5:41 pm
Nonstop8h 26m
$799
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 9/6
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Sat 9/12
3:15 pm-5:45 pm
Nonstop8h 30m
$799
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Boston to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boston with our price prediction graph.
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Barcelona
BOS-S37
BOS-BCN
BOS-GRO
BOS-REU
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $253). Flying from Boston to Barcelona in February is currently the most expensive (average of $1,255). 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 July 4, 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 July 4, 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 early afternoon 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 44 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 July 4, 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.
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
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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Alternative routes for Boston to Barcelona
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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 July 4, 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 July 4, 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 July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$234 | Average$384 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$337 | Average$504 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$529 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$437 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$651 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$475 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$400 | Average$631 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$406 | Average$608 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$409 | Average$693 | FlexibilityNo cancel fee | On-time79% |