$264+ Cheap flights from Boston (BOS) to Barcelona
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Sep 25 — Oct 21
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 56 days in advance, depart on a Monday or Sunday and return on a Thursday
Cheap flight deals from Boston to Barcelona
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to BarcelonaExplore the most affordable flight options available from Boston to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 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 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:35 pm -
Nonstop7h 05m
Thu 10/227:35 pm -
1 stop25h 20m
Deal found 8/21![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:35 pm -
Nonstop7h 05m
Thu 10/291:10 pm -
2 stops30h 40m
Deal found 8/21![Multiple Airlines logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:35 pm -
Nonstop7h 05m
Thu 11/56:55 am -
2 stops18h 00m
Deal found 8/21![Multiple Airlines logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 10/1510:55 pm -
Nonstop7h 05m
Wed 10/2111:10 pm -
1 stop21h 45m
Deal found 8/21![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:35 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/21![Multiple Airlines logo]()
$484
This eDestinos deal was found by Cheapflights users on 8/22. 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.
Sat 11/77:50 pm -
1 stop11h 50m
Sat 11/1412:25 pm -
1 stop11h 25m
Deal found 8/22![Icelandair logo]()
$490
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 10/1510:55 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/23![LEVEL logo]()
$507
This Mytrip deal was found by Cheapflights users on 8/22. 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 10/68:50 pm -
2 stops20h 05m
Tue 10/1311:05 pm -
2 stops22h 35m
Deal found 8/22![Multiple Airlines logo]()
$750
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/85:25 pm -
1 stop12h 15m
Thu 10/1511:20 pm -
2 stops21h 25m
Deal found 8/24![Multiple Airlines logo]()
$902
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 26, 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 26, 2026.
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/103:35 pm -
1 stop10h 25m
Wed 10/2112:15 pm -
2 stops27h 29m
Deal found 8/21![United Airlines logo]()
$625
This KLM deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:20 pm -
Nonstop7h 15m
Thu 10/13:15 pm -
Nonstop8h 30m
Deal found 8/22![KLM logo]()
$632
This TAP AIR PORTUGAL deal was found by Cheapflights users on 8/22. 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 10/1411:15 pm -
2 stops29h 20m
Wed 10/2110:40 pm -
1 stop27h 40m
Deal found 8/22![TAP AIR PORTUGAL logo]()
$641
This Delta deal was found by Cheapflights users on 8/24. 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 10/187:20 pm -
Nonstop7h 15m
Thu 10/2210:55 am -
1 stop18h 13m
Deal found 8/24![Delta logo]()
$642
This Finnair deal was found by Cheapflights users on 8/22. 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 9/2410:55 pm -
Nonstop7h 05m
Mon 10/127:00 am -
1 stop18h 45m
Deal found 8/22![Finnair logo]()
$649
This Mytrip deal was found by Cheapflights users on 8/22. 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 10/68:50 pm -
2 stops20h 05m
Tue 10/1311:05 pm -
2 stops22h 35m
Deal found 8/22![Multiple Airlines logo]()
$750
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:00 pm -
1 stop32h 00m
Fri 9/2512:15 pm -
2 stops29h 09m
Deal found 8/21![United Airlines logo]()
$626
This Delta deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:10 pm -
1 stop16h 25m
Tue 10/63:15 pm -
Nonstop8h 30m
Deal found 8/25![Delta logo]()
$651
This United Airlines deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:00 pm -
1 stop14h 15m
Fri 11/201:35 pm -
2 stops28h 51m
Deal found 8/25![United Airlines logo]()
$626
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/197:23 pm -
2 stops31h 37m
Sun 9/2712:15 pm -
1 stop27h 35m
Deal found 8/25![United Airlines logo]()
$626
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:50 am -
1 stop20h 10m
Mon 10/511:15 am -
1 stop18h 54m
Deal found 8/21![United Airlines logo]()
$645
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/85:25 pm -
1 stop12h 15m
Thu 10/1511:20 pm -
2 stops21h 25m
Deal found 8/24![Multiple Airlines logo]()
$902
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:50 pm -
1 stop31h 10m
Mon 10/263:10 pm -
2 stops24h 41m
Deal found 8/23![United Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:50 am -
1 stop20h 10m
Mon 10/126:00 am -
1 stop19h 55m
Deal found 8/23![United Airlines logo]()
$652
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated August 26, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated August 26, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 8/24. 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.
Sat 8/294:45 pm -
1 stop23h 25m
Tue 9/18:00 am -
1 stop12h 45m
Deal found 8/24![Condor logo]()
$576
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/611:35 pm -
Nonstop7h 05m
Thu 9/106:30 pm -
Nonstop8h 35m
Deal found 8/23![LEVEL logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/611:35 pm -
Nonstop7h 05m
Wed 9/96:30 pm -
Nonstop8h 35m
Deal found 8/23![LEVEL logo]()
$568
This Iberia deal was found by Cheapflights users on 8/25. 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 -
Nonstop7h 05m
Thu 9/176:30 pm -
Nonstop8h 35m
Deal found 8/25![Iberia logo]()
$578
This FlightHub deal was found by Cheapflights users on 8/25. 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.
Wed 9/94:45 pm -
1 stop23h 25m
Thu 9/178:00 am -
1 stop12h 45m
Deal found 8/25![Condor logo]()
$580
This FlightHub deal was found by Cheapflights users on 8/21. 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.
Wed 9/1610:55 pm -
Nonstop7h 05m
Wed 10/216:30 pm -
Nonstop8h 35m
Deal found 8/21![LEVEL logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:35 pm -
Nonstop7h 05m
Thu 10/156:30 pm -
Nonstop8h 35m
Deal found 8/23![LEVEL logo]()
$540
This LEVEL deal was found by Cheapflights users on 8/21. 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.
Sun 9/2011:35 pm -
Nonstop7h 05m
Wed 9/306:30 pm -
Nonstop8h 35m
Deal found 8/21![LEVEL logo]()
$541
This Iberia deal was found by Cheapflights users on 8/22. 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 9/2410:55 pm -
Nonstop7h 05m
Thu 10/16:30 pm -
Nonstop8h 35m
Deal found 8/22![Iberia logo]()
$551
This Cheapflightsfares deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:50 pm -
1 stop11h 55m
Mon 10/193:45 pm -
1 stop12h 00m
Deal found 8/24![Icelandair logo]()
$564
This FlightHub deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm -
1 stop11h 55m
Fri 10/23:45 pm -
1 stop12h 00m
Deal found 8/22![Icelandair logo]()
$571
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 26, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:50 pm -
1 stop11h 55m
Deal found 8/24![Icelandair logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 10/318:50 pm -
1 stop11h 50m
Deal found 8/25![Icelandair logo]()
$266
This FlightHub deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:50 pm -
1 stop11h 55m
Deal found 8/25![Icelandair logo]()
$267
This FlightHub deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:40 pm -
1 stop30h 50m
Deal found 8/25![Icelandair logo]()
$269
This Cheapflightsfares deal was found by Cheapflights users on 8/23. 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 -
1 stop11h 55m
Deal found 8/23![Icelandair logo]()
$271
This Icelandair deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:50 pm -
1 stop11h 55m
Deal found 8/23![Icelandair logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:50 pm -
2 stops37h 00m
Deal found 8/23![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:50 pm -
2 stops34h 55m
Deal found 8/21![Multiple Airlines 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 26, 2026.
Round-trip from | $428 (Kiwi.com) |
|---|---|
One-way from | $264 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $729 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Barcelona that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 26, 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 Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 10/10
3:35 pm-8:00 am
1 stop10h 25m
Barcelona-El Prat
Wed 10/21
12:15 pm-9:44 am
2 stops27h 29m
$625
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/18
7:00 pm-9:00 am
1 stop32h 00m
Barcelona-El Prat
Fri 9/25
12:15 pm-11:24 am
2 stops29h 09m
$626
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Mon 11/16
5:00 pm-1:15 pm
1 stop14h 15m
Barcelona-El Prat
Fri 11/20
1:35 pm-12:26 pm
2 stops28h 51m
$626
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sat 9/19
7:23 pm-9:00 am
2 stops31h 37m
Barcelona-El Prat
Sun 9/27
12:15 pm-9:50 am
1 stop27h 35m
$626
Quickest round-trip
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 9/27
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Thu 10/1
3:15 pm-5:45 pm
Nonstop8h 30m
$632
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Wed 10/14
11:15 pm-10:35 am
2 stops29h 20m
Barcelona-El Prat
Wed 10/21
10:40 pm-8:20 pm
1 stop27h 40m
$641
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Sun 10/18
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
Thu 10/22
10:55 am-11:08 pm
1 stop18h 13m
$642
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 9/25
5:50 am-8:00 am
1 stop20h 10m
Barcelona-El Prat
Mon 10/5
11:15 am-12:09 am
1 stop18h 54m
$645
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Thu 9/24
10:55 pm-12:00 pm
Nonstop7h 05m
Barcelona-El Prat
Mon 10/12
7:00 am-7:45 pm
1 stop18h 45m
$649
BostonBarcelona
BOS Boston Logan Intl - BCN Barcelona-El Prat
BOSBCN
Boston Logan Intl
Fri 10/16
6:50 pm-8:00 am
1 stop31h 10m
Barcelona-El Prat
Mon 10/26
3:10 pm-10:51 am
2 stops24h 41m
$650
Showing 1-10 of 25 resultsSorted by cheapest first
Best time to book a flight from Boston to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boston with our price prediction graph.
BOS-S37
BOS-BCN
BOS-GRO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Barcelona
BOS-S37
BOS-BCN
BOS-GRO
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Boston to Barcelona (average of $502). Flying from Boston to Barcelona in June is currently the most expensive (average of $859). 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 26, 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 26, 2026.
The most flights from BOS to S37 are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 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 $552 and $820 in October.The cheapest round-trip price found within the last 5 days was $428 on Multiple Airlines (Oct 18-Oct 22).
How often are flights from Boston to Barcelona delayed?
About 16% 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 at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Barcelona flights?
Over the last year, LEVEL have had the lowest number of delays on this route, with just 12% of flights being delayed.
How far ahead should I book a flight from Boston to Barcelona?
The best time to book flights from Boston to Barcelona is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated August 26, 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
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Boston and Barcelona flights
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Top 10 airlines flying from Boston to Barcelona
Discover the top 10 airlines that operate flights from Boston to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$783 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$348 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$454 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$398 | Average$726 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$434 | Average$469 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$435 | Average$623 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$791 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$443 | Average$658 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$447 | Average$754 | FlexibilityNo cancel fee | On-time71% |