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$324+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BCN
Jun 17 — Jun 241
Wed 6/17
Wed 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Barcelona are usually found in October or January, booked 46 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Boston to Barcelona

Cheapest flights from Boston to Barcelona
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 May 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:35 pm
BOS
-
BCN
Nonstop7h 05m
LEVEL
Sun 9/67:10 pm
BCN
-
BOS
Nonstop8h 35m
LEVEL
Deal found 5/14$567
This KAYAK deal was found by Cheapflights users on 5/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:50 pm
BOS
-
BCN
1 stop11h 55m
Icelandair
Tue 10/203:45 pm
BCN
-
BOS
1 stop33h 05m
Icelandair
Deal found 5/13$568
This Booking.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:45 pm
BOS
-
BCN
1 stop20h 45m
TAP AIR PORTUGAL
Thu 9/2411:25 am
BCN
-
BOS
1 stop14h 55m
TAP AIR PORTUGAL
Deal found 5/13$569
This Booking.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:45 pm
BOS
-
BCN
1 stop17h 05m
TAP AIR PORTUGAL
Thu 10/13:00 pm
BCN
-
BOS
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 5/16$570
This Booking.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:45 pm
BOS
-
BCN
1 stop20h 45m
TAP AIR PORTUGAL
Mon 9/2810:40 pm
BCN
-
BOS
1 stop27h 40m
TAP AIR PORTUGAL
Deal found 5/16$571
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:50 pm
BOS
-
BCN
1 stop11h 55m
Icelandair
Mon 10/53:45 pm
BCN
-
BOS
1 stop12h 00m
Icelandair
Deal found 5/13$572
This KAYAK deal was found by Cheapflights users on 5/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:50 pm
BOS
-
BCN
1 stop11h 55m
Icelandair
Fri 10/23:45 pm
BCN
-
BOS
1 stop12h 00m
Icelandair
Deal found 5/13$573
This Iberia deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:35 pm
BOS
-
BCN
Nonstop7h 05m
Iberia
Sun 7/197:10 pm
BCN
-
BOS
Nonstop8h 35m
Iberia
Deal found 5/17$574
This Cheapflightsfares deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:45 pm
BOS
-
BCN
1 stop20h 45m
TAP AIR PORTUGAL
Wed 10/216:00 am
BCN
-
BOS
1 stop20h 20m
TAP AIR PORTUGAL
Deal found 5/16$575
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:50 pm
BOS
-
BCN
2 stops17h 45m
Multiple Airlines
Wed 9/96:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 5/14$576
This eDestinos deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos 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
Iberia
Wed 9/232:50 pm
BCN
-
BOS
1 stop11h 00m
Iberia
Deal found 5/15$577
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 8/268:50 pm
BOS
-
BCN
2 stops20h 15m
Multiple Airlines
Wed 9/26:30 pm
BCN
-
BOS
Nonstop8h 35m
Multiple Airlines
Deal found 5/13$578

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 May 18, 2026.

Round-trip from

$570
(Kiwi.com)

One-way from

$324
(Iberia)

Popular in

June

Cheapest in

October

Average price

$691
From Boston Logan Intl to Barcelona
Search Deals
One-way flight from Boston Logan Intl to Barcelona
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in May 2026
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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 May 18, 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

Price

Cheapest round-trip

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 9/25

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Thu 10/1

3:15 pm-5:45 pm

Nonstop8h 30m

$737

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 7/23

5:55 pm-12:50 pm

1 stop12h 55m

Barcelona-El Prat

Tue 8/4

3:15 pm-5:41 pm

Nonstop8h 26m

$801

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 9/8

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Sun 9/13

3:15 pm-5:45 pm

Nonstop8h 30m

$810
Quickest round-trip

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 7/28

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Tue 8/4

3:15 pm-5:41 pm

Nonstop8h 26m

$822

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 6/22

7:19 am-1:15 pm

1 stop23h 56m

Barcelona-El Prat

Thu 7/2

12:15 pm-9:50 am

1 stop27h 35m

$822

BostonGirona

BOS - GRO

BOSGRO

Boston Logan Intl

Tue 7/28

8:50 pm-10:55 pm

2 stops20h 05m

Girona Costa Brava

Sun 8/2

8:25 am-9:45 pm

2 stops19h 20m

$828

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 8/5

7:10 pm-11:15 am

1 stop10h 05m

Barcelona-El Prat

Tue 8/11

3:15 pm-5:41 pm

Nonstop8h 26m

$838

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 6/30

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Sun 8/30

11:00 am-11:41 pm

1 stop18h 41m

$842

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 8/1

7:25 pm-8:35 am

Nonstop7h 10m

Barcelona-El Prat

Sun 8/16

6:10 am-1:39 pm

1 stop13h 29m

$859

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 7/18

7:20 pm-8:35 am

Nonstop7h 15m

Barcelona-El Prat

Mon 8/10

6:20 am-1:18 pm

1 stop12h 58m

$859

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 37 resultsSorted by cheapest first
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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.
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

How far ahead should I book a flight from Boston to Barcelona?

The best time to book flights from Boston to Barcelona is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $275). Flying from Boston to Barcelona in February is currently the most expensive (average of $1,065). 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 May 18, 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 May 18, 2026.

The most flights from BOS to S37 are scheduled on a Saturday (9 on average). You will have fewer flight options on Monday, 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?

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 134 minutes.

What is the most punctual flight time for Boston to Barcelona flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

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 11% 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 May 18, 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.
Delta
7.9
Good
8,447 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,447 reviews
Delta
7.9
Good
8,447 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
JetBlue
7.2
Good
2,979 reviews
Delta
7.9
Good
8,447 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Iberia
7.0
Good
3,219 reviews
Delta
7.9
Good
8,447 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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.

  • What airport do you fly from for flights from Boston to Barcelona?

    If you book a flight to Barcelona from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 6 flights from Logan Intl to Barcelona per day from 24 different airlines.

  • How long is the flight from Boston to Barcelona?

    Delta, KLM, and United Airlines can get you from Boston to Barcelona in just under 7h 15m. Your travel time can differ by up to 16h 41m. There are 3638 mi between Boston and Barcelona. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Barcelona round-trip?

    LEVEL, at $271, was found to be the cheapest airline from Boston to Barcelona.Alternate airlines to your destination round-trip include Vueling and Iberia. LEVEL is priced at 53% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to Barcelona one-way?

    The cheapest airline one-way is LEVEL, with whom users have recently found tickets for as low as $145. However, be on the lookout for offers from Iberia and Icelandair, as they are both options that can get you from Boston to Barcelona for a low price.

  • What are the most popular routes from Boston to Barcelona?

    The most popular route from Boston to Barcelona is Boston Logan Intl - Barcelona-El Prat. You may also consider Boston Logan Intl - Reus or Boston Logan Intl - Girona Costa Brava.

  • What are the most reliable airlines from Boston to Barcelona?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to Barcelona on time: Vueling (100%), JetBlue (100%), LEVEL (87%).

  • What are the cheapest flights from Boston to Barcelona?

    Looking for the cheapest flight from Boston to Barcelona? While on average our users pay $900, our data indicates the cheapest price to be $270. The most popular route (Boston Logan Intl - Barcelona-El Prat), is priced around $387.

  • Where are the most common layover locations when flying from Boston to Barcelona?

    Flights departing from Boston and landing in Barcelona layover in Lisbon most frequently. London follows Lisbon in terms of the most common layover location on Boston to Barcelona flights. Paris ranks third in terms of the most popular layover location on Boston to Barcelona flights.

  • What are some popular things to do or see while on a layover in Lisbon?

    Most Lisbon visitors opt to spend their time experiencing Chiado, Praça do Marquês de Pombal, and Londres. Chiado, Praça do Marquês de Pombal, and Londres can be visited by traveling about 4.5 mi, 3.6 mi, and 2.3 mi respectively from Lisbon Humberto Delgado. Those looking to explore during their layover in Lisbon can rent a car from Lisbon Humberto Delgado for about $21 per day.

  • What are some popular points of interest to see during a layover in London?

    If you're on a layover in London and looking for things to do, consider visiting Hyde Park, Buckingham Palace, or Piccadilly Circus. Hyde Park, Buckingham Palace, and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Travelers can rent a car at London Heathrow for an average daily rate of $37 to make sightseeing during their layover a little easier.

  • What are points of interest worth seeing during a layover in Paris?

    Paris travelers tend to visit Eiffel Tower, Champs-Elysées, and Louvre Museum more than any other attractions. Eiffel Tower, Champs-Elysées, and Louvre Museum can be visited by traveling about 15.8 mi, 14.7 mi, and 14.3 mi respectively from Paris Charles de Gaulle. Those on a layover in Paris in need of a rental car can book one at Paris Charles de Gaulle for about $44.

  • Where are the least popular layover locations for Boston to Barcelona flights?

    The least popular layover on flights from Boston to Barcelona is Reykjavik. Zurich is the second least popular location for layovers on flights from Boston to Barcelona. Madrid comes in third to last in terms of the least popular layover locations on Boston to Barcelona flights.

  • Can I find deals for flights from Boston to Barcelona that include hotel bookings?

    Yes. In addition to deals on Boston to Barcelona flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Barcelona?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Barcelona.

  • Can I find deals for business class flights from Boston to Barcelona?

    Yes. Cheapflights offers flight deals from Boston to Barcelona by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $275). Flying from Boston to Barcelona in February is currently the most expensive (average of $1,065). 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.

See more FAQs

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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.
Boston to Barcelona-El Prat flights
Boston to Reus flights
Hartford to Barcelona-El Prat flights
Worcester to Barcelona-El Prat flights
Albany to Barcelona-El Prat flights

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 May 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
VuelingCheapest$278Average$558FlexibilityNo cancel feeOn-time88%
Azores AirlinesCheapest$311Average$832FlexibilityNo cancel feeOn-time74%
CondorCheapest$330Average$597FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$337Average$486FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$349Average$495FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$352Average$434FlexibilityNo cancel feeOn-time76%
SWISSCheapest$385Average$611FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$398Average$678FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$398Average$466FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$406Average$603FlexibilityNo cancel feeOn-timeN/A

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