$315+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Touko 27 — kesä 31
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 September or October, booked 56 days in advance, depart on a Monday or Tuesday and return on a Thursday
Cheap flight deals from Boston to Barcelona
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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 huhtikuu 27, 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 huhtikuu 27, 2026.
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/114:45 pm
BOS
- BCN
1 stop10h 45m
Condor
ti 5/198:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
ke 11/257:50 pm
BOS
- BCN
2 stops17h 50m
Multiple Airlines
ti 12/86:10 pm
BCN
- BOS
Nonstop8h 45m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$522
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/114:45 pm
BOS
- BCN
1 stop17h 15m
Condor
pe 5/228:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$524
This deal was found by Cheapflights users on 4/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 10/2711:40 pm
BOS
- BCN
Nonstop7h 15m
Iberia
la 10/316:10 pm
BCN
- BOS
Nonstop8h 45m
Iberia
Deal found 4/23![Iberia logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
ma 5/114:35 pm
BOS
- BCN
3 stops23h 25m
Multiple Airlines
pe 5/156:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$529
This LEVEL deal was found by Cheapflights users on 4/24. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
la 5/236:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 4/24![LEVEL logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
pe 5/226:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 4/22![LEVEL logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
ti 5/126:50 pm
BOS
- BCN
3 stops45h 55m
Multiple Airlines
la 5/166:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$535
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 5/144:45 pm
BOS
- BCN
1 stop17h 20m
Condor
ma 5/258:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$537
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 8/205:25 pm
BOS
- GRO
1 stop12h 15m
Multiple Airlines
pe 8/286:15 am
GRO
- BOS
1 stop21h 45m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$829
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 8/2011:30 pm
BOS
- REU
1 stop16h 55m
Multiple Airlines
pe 8/289:50 am
REU
- BOS
1 stop15h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$894
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
pe 5/111:30 pm
BOS
- GRO
1 stop17h 10m
Multiple Airlines
la 5/166:15 am
GRO
- BOS
2 stops20h 50m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$952
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 huhtikuu 27, 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 huhtikuu 27, 2026.
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 9/226:50 pm
BOS
- BCN
1 stop31h 10m
United Airlines
ke 9/3012:15 pm
BCN
- BOS
2 stops30h 32m
United Airlines
Deal found 4/24![United Airlines logo]()
$690
This Scandinavian Airlines deal was found by Cheapflights users on 4/23. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 9/165:40 pm
BOS
- BCN
1 stop18h 30m
Scandinavian Airlines
to 9/2412:50 pm
BCN
- BOS
2 stops32h 45m
Scandinavian Airlines
Deal found 4/23![Scandinavian Airlines logo]()
$697
This KLM deal was found by Cheapflights users on 4/26. 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.
ma 5/257:20 pm
BOS
- BCN
Nonstop7h 15m
Multiple Airlines
ma 6/16:10 am
BCN
- BOS
1 stop13h 27m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$762
This Delta deal was found by Cheapflights users on 4/25. 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.
ma 6/81:35 pm
BOS
- BCN
1 stop13h 10m
Delta
ke 6/173:15 pm
BCN
- BOS
Nonstop8h 23m
Delta
Deal found 4/25![Delta logo]()
$789
This Virgin Atlantic deal was found by Cheapflights users on 4/24. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 8/207:25 pm
BOS
- BCN
Nonstop7h 10m
Virgin Atlantic
la 8/293:15 pm
BCN
- BOS
Nonstop8h 26m
Virgin Atlantic
Deal found 4/24![Virgin Atlantic logo]()
$797
This KLM deal was found by Cheapflights users on 4/22. 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.
la 7/117:20 pm
BOS
- BCN
Nonstop7h 15m
KLM
ke 7/223:15 pm
BCN
- BOS
Nonstop8h 26m
KLM
Deal found 4/22![KLM logo]()
$797
This United Airlines deal was found by Cheapflights users on 4/26. 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.
ti 6/26:00 am
BOS
- BCN
2 stops20h 00m
United Airlines
ti 6/96:00 am
BCN
- BOS
1 stop15h 10m
United Airlines
Deal found 4/26![United Airlines logo]()
$760
This KLM deal was found by Cheapflights users on 4/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 9/45:10 pm
BOS
- BCN
1 stop12h 05m
Multiple Airlines
ma 9/143:15 pm
BCN
- BOS
Nonstop8h 30m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$766
This Cheapflightsfares deal was found by Cheapflights users on 4/26. 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.
su 7/511:35 pm
BOS
- BCN
Nonstop7h 05m
Multiple Airlines
pe 7/104:55 pm
BCN
- BOS
1 stop11h 40m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$801
This United Airlines deal was found by Cheapflights users on 4/23. 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.
la 6/63:40 pm
BOS
- BCN
1 stop10h 20m
United Airlines
su 6/146:00 am
BCN
- BOS
1 stop19h 55m
United Airlines
Deal found 4/23![United Airlines logo]()
$805
This KLM deal was found by Cheapflights users on 4/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 6/305:56 pm
BOS
- BCN
1 stop12h 54m
Multiple Airlines
to 7/1610:55 am
BCN
- BOS
1 stop14h 21m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$803
This Iberia deal was found by Cheapflights users on 4/25. 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.
su 7/129:20 pm
BOS
- REU
2 stops29h 25m
Iberia
ti 7/219:15 am
REU
- BOS
2 stops36h 55m
Iberia
Deal found 4/25![Iberia logo]()
$2,007
This KLM deal was found by Cheapflights users on 4/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 7/315:10 pm
BOS
- BCN
1 stop12h 05m
Multiple Airlines
ti 8/113:15 pm
BCN
- BOS
Nonstop8h 26m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$816
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 8/205:25 pm
BOS
- GRO
1 stop12h 15m
Multiple Airlines
pe 8/286:15 am
GRO
- BOS
1 stop21h 45m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$829
This Mytrip deal was found by Cheapflights users on 4/26. 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.
ke 6/1010:05 am
BOS
- GRO
3 stops30h 50m
Multiple Airlines
ke 6/176:10 am
GRO
- BOS
3 stops38h 35m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$975
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
su 6/712:30 pm
BOS
- GRO
3 stops28h 25m
Multiple Airlines
la 6/1312:10 am
GRO
- BOS
3 stops38h 55m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,048
This Iberia deal was found by Cheapflights users on 4/25. 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.
to 7/169:20 pm
BOS
- REU
2 stops30h 35m
Iberia
ti 7/219:15 am
REU
- BOS
2 stops36h 55m
Iberia
Deal found 4/25![Iberia logo]()
$2,067
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 6/193:25 pm
BOS
- GRO
3 stops25h 55m
Multiple Airlines
ma 7/610:55 pm
GRO
- BOS
2 stops27h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,192
This Iberia deal was found by Cheapflights users on 4/25. 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.
pe 7/179:20 pm
BOS
- GRO
2 stops34h 40m
Iberia
to 7/2311:45 am
GRO
- BOS
2 stops14h 05m
Iberia
Deal found 4/25![Iberia logo]()
$2,200
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 8/205:45 am
BOS
- REU
3 stops33h 35m
Multiple Airlines
pe 8/285:45 pm
REU
- BOS
3 stops27h 00m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,197
This Iberia deal was found by Cheapflights users on 4/25. 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.
su 7/129:20 pm
BOS
- REU
2 stops29h 25m
Iberia
la 7/2510:25 am
REU
- BOS
2 stops35h 45m
Iberia
Deal found 4/25![Iberia logo]()
$2,277
This Iberia deal was found by Cheapflights users on 4/25. 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.
pe 7/179:20 pm
BOS
- GRO
2 stops34h 40m
Iberia
su 7/262:30 pm
GRO
- BOS
2 stops55h 40m
Iberia
Deal found 4/25![Iberia logo]()
$2,296
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 7/103:35 pm
BOS
- REU
2 stops24h 25m
Multiple Airlines
la 7/185:55 pm
REU
- BOS
3 stops45h 10m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,322
This Iberia deal was found by Cheapflights users on 4/25. 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.
la 7/119:20 pm
BOS
- REU
2 stops53h 25m
Iberia
la 7/2510:25 am
REU
- BOS
2 stops39h 25m
Iberia
Deal found 4/25![Iberia logo]()
$2,519
Last-minute flights from Boston to BarcelonaDiscover last-minute flight deals from Boston to Barcelona. Data last updated huhtikuu 27, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Barcelona. Data last updated huhtikuu 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
pe 5/111:30 pm
BOS
- GRO
1 stop17h 10m
Multiple Airlines
la 5/166:15 am
GRO
- BOS
2 stops20h 50m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$952
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/114:45 pm
BOS
- BCN
1 stop10h 45m
Condor
ti 5/198:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$521
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/114:45 pm
BOS
- BCN
1 stop17h 15m
Condor
pe 5/228:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
ma 5/114:35 pm
BOS
- BCN
3 stops23h 25m
Multiple Airlines
pe 5/156:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
ti 5/126:50 pm
BOS
- BCN
3 stops45h 55m
Multiple Airlines
la 5/166:30 pm
BCN
- BOS
Nonstop8h 35m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$535
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to 5/144:45 pm
BOS
- BCN
1 stop17h 20m
Condor
ma 5/258:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$537
This LEVEL deal was found by Cheapflights users on 4/24. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
la 5/236:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 4/24![LEVEL logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
pe 5/226:30 pm
BCN
- BOS
Nonstop8h 35m
LEVEL
Deal found 4/22![LEVEL logo]()
$533
This Iberia deal was found by Cheapflights users on 4/22. 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.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
Iberia
ke 5/276:30 pm
BCN
- BOS
Nonstop8h 35m
Iberia
Deal found 4/22![Iberia logo]()
$544
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/184:45 pm
BOS
- BCN
1 stop17h 15m
Condor
to 5/218:00 am
BCN
- BOS
1 stop12h 45m
Condor
Deal found 4/22![Condor logo]()
$541
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 huhtikuu 27, 2026.
Search for one-way flight options from Boston to Barcelona. Find affordable one-way fares based on user searches. Data last updated huhtikuu 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
ma 5/188:50 pm
BOS
- BCN
2 stops17h 15m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$315
This Super.com deal was found by Cheapflights users on 4/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 8/511:00 pm
BOS
- BCN
Nonstop7h 10m
LEVEL
Deal found 4/22![LEVEL logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 8/38:50 pm
BOS
- BCN
2 stops21h 45m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/114:35 pm
BOS
- BCN
2 stops24h 20m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$323
This Iberia deal was found by Cheapflights users on 4/22. 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.
su 8/1611:35 pm
BOS
- BCN
Nonstop7h 05m
Iberia
Deal found 4/22![Iberia logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
to 10/228:50 pm
BOS
- BCN
2 stops17h 25m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 9/158:50 pm
BOS
- BCN
3 stops18h 50m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
pe 10/168:50 pm
BOS
- BCN
3 stops18h 25m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$328
This eDestinos deal was found by Cheapflights users on 4/22. 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.
ma 6/13:00 pm
BOS
- BCN
1 stop15h 50m
Virgin Atlantic
Deal found 4/22![Virgin Atlantic logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/1610:50 pm
BOS
- BCN
Nonstop7h 20m
LEVEL
Deal found 4/22![LEVEL logo]()
$330
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 7/1010:05 am
BOS
- GRO
2 stops30h 35m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$507
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 7/1010:40 am
BOS
- REU
3 stops24h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$584
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 huhtikuu 27, 2026.
Round-trip from | $521 (CheapOair) |
|---|---|
One-way from | $315 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $603 |
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 huhtikuu 27, 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
ti 9/22
6:50 pm-8:00 am
1 stop31h 10m
Barcelona-El Prat
ke 9/30
12:15 pm-12:47 pm
2 stops30h 32m
$690
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ke 9/16
5:40 pm-6:10 pm
1 stop18h 30m
Barcelona-El Prat
to 9/24
12:50 pm-3:35 pm
2 stops32h 45m
$697
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ti 6/2
6:00 am-8:00 am
2 stops20h 00m
Barcelona-El Prat
ti 6/9
6:00 am-3:10 pm
1 stop15h 10m
$760
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ma 5/25
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
ma 6/1
6:10 am-1:37 pm
1 stop13h 27m
$762
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
pe 9/4
5:10 pm-11:15 am
1 stop12h 05m
Barcelona-El Prat
ma 9/14
3:15 pm-5:45 pm
Nonstop8h 30m
$766
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ma 6/8
1:35 pm-8:45 am
1 stop13h 10m
Barcelona-El Prat
ke 6/17
3:15 pm-5:38 pm
Nonstop8h 23m
$789
Quickest round-trip
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
to 8/20
7:25 pm-8:35 am
Nonstop7h 10m
Barcelona-El Prat
la 8/29
3:15 pm-5:41 pm
Nonstop8h 26m
$797
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
la 7/11
7:20 pm-8:35 am
Nonstop7h 15m
Barcelona-El Prat
ke 7/22
3:15 pm-5:41 pm
Nonstop8h 26m
$797
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
su 7/5
11:35 pm-12:40 pm
Nonstop7h 05m
Barcelona-El Prat
pe 7/10
4:55 pm-10:35 pm
1 stop11h 40m
$801
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
ti 6/30
5:56 pm-12:50 pm
1 stop12h 54m
Barcelona-El Prat
to 7/16
10:55 am-7:16 pm
1 stop14h 21m
$803
Showing 1-10 of 37 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
How far ahead should I book a flight from Boston to Barcelona?
The best time to book flights from Boston to Barcelona is 84 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.
What is the cheapest month to book a flight from Boston to Barcelona?
Currently, December is the cheapest month in which you can book a flight from Boston to Barcelona (average of $305). Flying from Boston to Barcelona in January is currently the most expensive (average of $1,500). 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 huhtikuu 27, 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 huhtikuu 27, 2026.
The most flights from BOS to S37 are scheduled on a Saturday (7 on average). You will have fewer flight options on Wednesday, 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?
How often are flights from Boston to Barcelona delayed?
About 11% of weekly flights between Boston and Barcelona have experienced delays in the past year, with the average delay time being 132 minutes.
What is the most punctual flight time for Boston to Barcelona flights?
Historically, flights departing in the morning 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?
Tuesday 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 10% of flights being delayed.
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 huhtikuu 27, 2026.
Read reviews from past customers who have flown Delta,JetBlue, andIberia 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.
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Boston to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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Alternative routes for Boston to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Barcelona by cabin class
Find flights from Boston to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Barcelona flights
Browse other Boston and Barcelona flight options. Last updated on huhtikuu 27, 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 huhtikuu 27, 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 huhtikuu 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$273 | Average$446 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$311 | Average$832 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$330 | Average$584 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$337 | Average$483 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$496 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$439 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$379 | Average$528 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$398 | Average$678 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$466 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$406 | Average$599 | FlexibilityNo cancel fee | On-timeN/A |