$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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Sep 1 — Sep 81
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
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Best
Last-minute
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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 2, 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 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. 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
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
Wed 10/216:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 10/1811:35 pm
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
Thu 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 10/178:50 pm
BOS
- BCN
2 stops20h 35m
Multiple Airlines
Thu 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$497
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/48:50 pm
BOS
- BCN
2 stops20h 40m
Multiple Airlines
Thu 10/226:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Wed 10/78:50 pm
BOS
- BCN
2 stops20h 15m
Multiple Airlines
Wed 10/216:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/2210:55 pm
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
Sun 11/15:55 am
BCN
- BOS
2 stops20h 05m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$514
This eDestinos deal was found by Cheapflights users on 7/28. 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 9/74:45 pm
BOS
- BCN
1 stop10h 45m
Condor
Mon 9/218:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/28![Condor logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 10/1811:35 pm
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
Sun 11/15:55 am
BCN
- BOS
2 stops20h 05m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$519
This Mytrip deal was found by Cheapflights users on 7/31. 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 10/710:05 am
BOS
- GRO
3 stops30h 50m
Multiple Airlines
Sun 10/189:15 pm
GRO
- BOS
3 stops39h 55m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$782
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 10/39:15 pm
BOS
- GRO
1 stop10h 35m
Multiple Airlines
Sun 10/189:15 pm
GRO
- BOS
2 stops30h 30m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$798
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:25 pm
BOS
- GRO
2 stops13h 40m
Multiple Airlines
Sat 9/196:15 am
GRO
- BOS
3 stops38h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$885
This Mytrip deal was found by Cheapflights users on 7/28. 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 8/412:30 pm
BOS
- GRO
2 stops28h 25m
Multiple Airlines
Wed 8/1211:30 pm
GRO
- BOS
2 stops21h 11m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$939
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 2, 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 2, 2026.
This Delta deal was found by Cheapflights users on 8/2. 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 10/186:00 am
BOS
- BCN
1 stop20h 45m
Delta
Thu 10/223:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 8/2![Delta logo]()
$636
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/29. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:45 pm
BOS
- BCN
1 stop20h 45m
TAP AIR PORTUGAL
Wed 10/76:00 am
BCN
- BOS
2 stops20h 20m
TAP AIR PORTUGAL
Deal found 7/29![TAP AIR PORTUGAL logo]()
$667
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Sat 10/178:13 pm
BOS
- BCN
Nonstop7h 32m
JetBlue
Wed 10/2112:50 pm
BCN
- BOS
Nonstop8h 38m
JetBlue
Deal found 7/31![JetBlue logo]()
$671
This KLM deal was found by Cheapflights users on 8/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:25 pm
BOS
- BCN
Nonstop7h 10m
KLM
Sat 8/223:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 8/1![KLM logo]()
$676
This Finnair deal was found by Cheapflights users on 8/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 pm
BOS
- BCN
Nonstop7h 05m
Finnair
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
Finnair
Deal found 8/1![Finnair logo]()
$694
This Mytrip deal was found by Cheapflights users on 7/31. 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 10/710:05 am
BOS
- GRO
3 stops30h 50m
Multiple Airlines
Sun 10/189:15 pm
GRO
- BOS
3 stops39h 55m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$782
This Delta deal was found by Cheapflights users on 7/29. 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.
Sat 10/105:10 pm
BOS
- BCN
1 stop9h 50m
Delta
Fri 10/233:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/29![Delta logo]()
$653
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/28. 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.
Mon 9/286:05 pm
BOS
- BCN
1 stop21h 45m
TAP AIR PORTUGAL
Wed 10/711:25 am
BCN
- BOS
2 stops14h 55m
TAP AIR PORTUGAL
Deal found 7/28![TAP AIR PORTUGAL logo]()
$668
This KLM deal was found by Cheapflights users on 7/28. 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 10/97:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
Thu 10/153:15 pm
BCN
- BOS
Nonstop8h 30m
KLM
Deal found 7/28![KLM logo]()
$690
This Delta deal was found by Cheapflights users on 7/31. 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
BOS
- BCN
1 stop22h 50m
Delta
Thu 10/13:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/31![Delta logo]()
$665
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 10/39:15 pm
BOS
- GRO
1 stop10h 35m
Multiple Airlines
Sun 10/189:15 pm
GRO
- BOS
2 stops30h 30m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$798
This Delta deal was found by Cheapflights users on 7/30. 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.
Sun 8/167:25 pm
BOS
- BCN
Nonstop7h 10m
Delta
Fri 8/213:15 pm
BCN
- BOS
Nonstop8h 26m
Delta
Deal found 7/30![Delta logo]()
$676
This Delta deal was found by Cheapflights users on 7/31. 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 8/147:55 am
BOS
- BCN
1 stop22h 55m
Delta
Tue 9/13:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/31![Delta logo]()
$681
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:25 pm
BOS
- GRO
2 stops13h 40m
Multiple Airlines
Sat 9/196:15 am
GRO
- BOS
3 stops38h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$885
This Delta deal was found by Cheapflights users on 7/29. 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 9/99:45 pm
BOS
- BCN
1 stop11h 50m
Delta
Tue 9/153:15 pm
BCN
- BOS
Nonstop8h 30m
Delta
Deal found 7/29![Delta logo]()
$681
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated August 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated August 2, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/28. 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 8/412:30 pm
BOS
- GRO
2 stops28h 25m
Multiple Airlines
Wed 8/1211:30 pm
GRO
- BOS
2 stops21h 11m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$939
This Mytrip deal was found by Cheapflights users on 7/31. 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 8/72:45 pm
BOS
- REU
3 stops22h 20m
Multiple Airlines
Sat 8/810:25 pm
REU
- BOS
2 stops26h 32m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$1,095
This LEVEL deal was found by Cheapflights users on 7/31. 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 8/1311:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/31![LEVEL logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 8/1611:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/30![LEVEL logo]()
$549
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/1910:55 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/30![LEVEL logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/2011:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Thu 8/277:10 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 7/30![LEVEL logo]()
$547
This Vliegwinkel deal was found by Cheapflights users on 8/1. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:45 pm
BOS
- BCN
1 stop17h 20m
Condor
Thu 8/275:00 pm
BCN
- BOS
1 stop27h 45m
Condor
Deal found 8/1![Condor logo]()
$552
This oojo deal was found by Cheapflights users on 7/28. 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 8/204:45 pm
BOS
- BCN
1 stop17h 20m
Condor
Wed 8/265:00 pm
BCN
- BOS
1 stop27h 45m
Condor
Deal found 7/28![Condor logo]()
$559
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Thu 8/273:45 pm
BCN
- BOS
1 stop12h 00m
Icelandair
Deal found 7/29![Icelandair logo]()
$531
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Tue 8/258:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Mon 8/313:45 pm
BCN
- BOS
1 stop33h 05m
Icelandair
Deal found 7/31![Icelandair logo]()
$563
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/304:45 pm
BOS
- BCN
1 stop17h 15m
Condor
Thu 9/38:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 7/29![Condor logo]()
$542
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:45 pm
BOS
- BCN
1 stop17h 15m
Condor
Wed 9/28:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 8/1![Condor logo]()
$557
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 2, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
This Iberia deal was found by Cheapflights users on 7/31. 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 8/1611:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 7/31![Iberia logo]()
$264
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$265
This Justfly.com deal was found by Cheapflights users on 8/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 8/1![LEVEL logo]()
$267
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$270
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:35 pm
BOS
- BCN
Nonstop7h 05m
LEVEL
Deal found 7/28![LEVEL logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/28. 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
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 7/28![Iberia logo]()
$277
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Thu 10/18:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/31![Icelandair logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 10/28:50 pm
BOS
- BCN
1 stop11h 55m
Icelandair
Deal found 7/29![Icelandair logo]()
$281
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 2, 2026.
Round-trip from | $485 (Kiwi.com) |
|---|---|
One-way from | $264 (Iberia) |
Popular in | June |
Cheapest in | January |
Average price | $686 |
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 2, 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
Sun 10/18
6:00 am-8:45 am
1 stop20h 45m
Barcelona-El Prat
Thu 10/22
3:15 pm-5:45 pm
Nonstop8h 30m
$636
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 10/10
5:10 pm-9:00 am
1 stop9h 50m
Barcelona-El Prat
Fri 10/23
3:15 pm-5:45 pm
Nonstop8h 30m
$653
BostonBarcelona
BOS - BCN
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
$665
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Tue 9/29
10:45 pm-1:30 am
1 stop20h 45m
Barcelona-El Prat
Wed 10/7
6:00 am-8:20 pm
2 stops20h 20m
$667
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 9/28
6:05 pm-9:50 pm
1 stop21h 45m
Barcelona-El Prat
Wed 10/7
11:25 am-8:20 pm
2 stops14h 55m
$668
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sat 10/17
8:13 pm-9:45 am
Nonstop7h 32m
Barcelona-El Prat
Wed 10/21
12:50 pm-3:28 pm
Nonstop8h 38m
$671
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 8/16
7:25 pm-8:35 am
Nonstop7h 10m
Barcelona-El Prat
Sat 8/22
3:15 pm-5:41 pm
Nonstop8h 26m
$676
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 8/16
7:25 pm-8:35 am
Nonstop7h 10m
Barcelona-El Prat
Fri 8/21
3:15 pm-5:41 pm
Nonstop8h 26m
$676
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 8/14
7:55 am-12:50 pm
1 stop22h 55m
Barcelona-El Prat
Tue 9/1
3:15 pm-5:45 pm
Nonstop8h 30m
$681
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Wed 9/9
9:45 pm-3:35 pm
1 stop11h 50m
Barcelona-El Prat
Tue 9/15
3:15 pm-5:45 pm
Nonstop8h 30m
$681
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
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 $496). Flying from Boston to Barcelona in June is currently the most expensive (average of $856). 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 2, 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 2, 2026.
The most flights from BOS to S37 are scheduled on a Friday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 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 $557 and $809 in October.The cheapest round-trip price found within the last 5 days was $485 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 2, 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.
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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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 August 2, 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 August 2, 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 August 2, 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 |