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Cheap flights from Boston to Barcelona from $189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Barcelona departing on 3/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
6:05 pm - 8:20 pm
BOS
-
BCN
20h 15m
1 stop
TAP AIR PORTUGAL Logo
10:55 am - 8:10 pm
BCN
-
BOS
15h 15m
1 stop
$381TAP AIR PORTUGAL
Thu, Jan 29 - Sun, Feb 1
TAP AIR PORTUGAL Logo
6:05 pm - 10:05 am
BOS
-
BCN
10h 00m
1 stop
TAP AIR PORTUGAL Logo
6:45 am - 2:35 pm
BCN
-
BOS
13h 50m
1 stop
$382TAP AIR PORTUGAL
Wed, Jan 28 - Sun, Feb 1
Icelandair Logo
11:30 pm - 2:45 pm
BOS
-
BCN
33h 15m
1 stop
Icelandair Logo
3:45 pm - 10:10 pm
BCN
-
BOS
12h 25m
1 stop
$385Icelandair
Thu, Apr 30 - Wed, May 20
LEVEL Logo
10:50 pm - 12:10 pm
BOS
-
BCN
7h 20mnonstop
LEVEL Logo
6:30 pm - 9:05 pm
BCN
-
BOS
8h 35mnonstop
$387LEVEL
Mon, May 4 - Fri, May 8
TAP AIR PORTUGAL Logo
6:05 pm - 8:20 pm
BOS
-
BCN
20h 15m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 8:10 pm
BCN
-
BOS
32h 05m
1 stop
$389TAP AIR PORTUGAL
Wed, Feb 18 - Thu, Feb 26
Icelandair Logo
7:50 pm - 1:35 pm
BOS
-
BCN
11h 45m
1 stop
Icelandair Logo
11:50 am - 5:50 pm
BCN
-
BOS
12h 00m
1 stop
$390Icelandair
Fri, Feb 6 - Tue, Feb 10
TAP AIR PORTUGAL Logo
7:05 pm - 1:45 pm
BOS
-
BCN
13h 40m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 3:35 pm
BCN
-
BOS
26h 30m
1 stop
$392TAP AIR PORTUGAL
Tue, Mar 10 - Tue, Mar 17
TAP AIR PORTUGAL Logo
6:05 pm - 10:05 am
BOS
-
BCN
10h 00m
1 stop
TAP AIR PORTUGAL Logo
6:45 am - 2:45 pm
BCN
-
BOS
14h 00m
1 stop
$393TAP AIR PORTUGAL
Sun, Feb 8 - Tue, Feb 17
LEVEL Logo
10:50 pm - 12:10 pm
BOS
-
BCN
7h 20mnonstop
LEVEL Logo
6:30 pm - 9:05 pm
BCN
-
BOS
8h 35mnonstop
$395LEVEL
Mon, May 4 - Mon, May 18
Icelandair Logo
7:50 pm - 1:15 pm
BOS
-
BCN
11h 25m
1 stop
Icelandair Logo
11:50 am - 5:50 pm
BCN
-
BOS
12h 00m
1 stop
$397Icelandair
Wed, Jan 28 - Tue, Feb 10

Icelandair flights from Boston to Barcelona-El Prat Airport

Our best Icelandair deals on Boston to Barcelona-El Prat Airport flight tickets
Icelandair
Apr 30
BOS11:30 pmBoston Logan Intl
33h 15m
1 stop
BCN2:45 pmBarcelona-El Prat
May 20
BCN3:45 pmBarcelona-El Prat
12h 25m
1 stop
BOS10:10 pmBoston Logan Intl
$385
Icelandair
Feb 22
BOS7:50 pmBoston Logan Intl
11h 25m
1 stop
BCN1:15 pmBarcelona-El Prat
Mar 1
BCN11:50 amBarcelona-El Prat
12h 00m
1 stop
BOS5:50 pmBoston Logan Intl
$388
Icelandair
Feb 6
BOS7:50 pmBoston Logan Intl
11h 45m
1 stop
BCN1:35 pmBarcelona-El Prat
Feb 10
BCN11:50 amBarcelona-El Prat
12h 00m
1 stop
BOS5:50 pmBoston Logan Intl
$390

United Airlines flights from Boston to Barcelona-El Prat Airport

Our best United Airlines deals on Boston to Barcelona-El Prat Airport flight tickets
United Airlines
Jan 21
BOS10:15 amBoston Logan Intl
17h 20m
1 stop
BCN9:35 amBarcelona-El Prat
Jan 27
BCN1:35 pmBarcelona-El Prat
29h 38m
2 stops
BOS1:13 pmBoston Logan Intl
$433
United Airlines
Mar 9
BOS5:45 amBoston Logan Intl
21h 35m
1 stop
BCN8:20 amBarcelona-El Prat
Mar 18
BCN12:35 pmBarcelona-El Prat
31h 17m
1 stop
BOS2:52 pmBoston Logan Intl
$435
United Airlines
Jan 21
BOS6:00 amBoston Logan Intl
21h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Jan 27
BCN1:35 pmBarcelona-El Prat
29h 38m
2 stops
BOS1:13 pmBoston Logan Intl
$437

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Barcelona-El Prat Airport 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, momondo users made 832,500 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from Boston to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 1/29

6:05 pm-8:20 pm

1 stop20h 15m

Barcelona-El Prat

Sun 2/1

10:55 am-8:10 pm

1 stop15h 15m

$381

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 1/28

6:05 pm-10:05 am

1 stop10h 00m

Barcelona-El Prat

Sun 2/1

6:45 am-2:35 pm

1 stop13h 50m

$382

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 4/30

11:30 pm-2:45 pm

1 stop33h 15m

Barcelona-El Prat

Wed 5/20

3:45 pm-10:10 pm

1 stop12h 25m

$385

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 5/4

10:50 pm-12:10 pm

Nonstop7h 20m

Barcelona-El Prat

Fri 5/8

6:30 pm-9:05 pm

Nonstop8h 35m

$387

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 2/18

6:05 pm-8:20 pm

1 stop20h 15m

Barcelona-El Prat

Thu 2/26

6:05 pm-8:10 pm

1 stop32h 05m

$389

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Fri 2/6

7:50 pm-1:35 pm

1 stop11h 45m

Barcelona-El Prat

Tue 2/10

11:50 am-5:50 pm

1 stop12h 00m

$390

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 3/10

7:05 pm-1:45 pm

1 stop13h 40m

Barcelona-El Prat

Tue 3/17

6:05 pm-3:35 pm

1 stop26h 30m

$392

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 2/8

6:05 pm-10:05 am

1 stop10h 00m

Barcelona-El Prat

Tue 2/17

6:45 am-2:45 pm

1 stop14h 00m

$393

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 5/4

10:50 pm-12:10 pm

Nonstop7h 20m

Barcelona-El Prat

Mon 5/18

6:30 pm-9:05 pm

Nonstop8h 35m

$395

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 1/28

7:50 pm-1:15 pm

1 stop11h 25m

Barcelona-El Prat

Tue 2/10

11:50 am-5:50 pm

1 stop12h 00m

$397

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Barcelona from

How to get the cheapest flight ticket from Boston to Barcelona-El Prat Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Boston is in September. Flight prices, which tend to average around $473, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Barcelona-El Prat Airport from Boston during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in September, still average around $475.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Monday when prices can be found for as low as $546. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $667. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $598 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $763 on average. Flights to Barcelona-El Prat Airport from Boston in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Boston Logan Intl to Barcelona-El Prat flight route?

Fly from Boston Logan Intl to Barcelona-El Prat for the best Boston Logan Intl - Barcelona-El Prat flight prices

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $566 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Boston for as low as $496 on momondo.

What cabin class options are available on Boston Logan Intl to Barcelona-El Prat flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Barcelona-El Prat flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to Barcelona-El Prat Airport flight prices changed over time?

As of January 2026, prices for Boston to Barcelona-El Prat Airport flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Barcelona-El Prat Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Barcelona-El Prat Airport (BOS to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Barcelona-El Prat Airport

Best Price Found

$338

Fastest flight time

7h 10m

Direct flights

Every day
The best one-way flight to Barcelona-El Prat Airport from Boston in the past 72 hours is $338. The best round-trip flight deal from Boston to Barcelona-El Prat Airport found on momondo in the last 72 hours is $503.
The fastest flight from Boston to Barcelona-El Prat Airport takes 7h 10m
Direct flights go from Boston to Barcelona-El Prat Airport every day.
Search flight deals

  • How far is Boston Logan Intl to Barcelona-El Prat by plane?

    There are 3640.3 mi between Boston Logan Intl and Barcelona-El Prat. Typically, this will take 7h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport?

    Prices for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport refresh daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Barcelona-El Prat Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The necessary travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Barcelona-El Prat Airport?

  • What is the most popular airline from Boston to Barcelona-El Prat Airport?

Best airlines flying from Boston to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Boston to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $308Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $326Free CancellationRating
7.1
2,121 reviews
Search TAP AIR PORTUGAL flights
LEVELPriceFrom $348Free CancellationRating
0.0
0 reviews
Search LEVEL flights
FinnairPriceFrom $349Free CancellationRating
7.6
1,349 reviews
Search Finnair flights
IcelandairPriceFrom $351Free CancellationRating
7.1
596 reviews
Search Icelandair flights
SWISSPriceFrom $393Free CancellationRating
7.5
1,849 reviews
Search SWISS flights
Air CanadaPriceFrom $399Free CancellationRating
7.1
10,623 reviews
Search Air Canada flights
Air FrancePriceFrom $424Free CancellationRating
7.4
1,522 reviews
Search Air France flights
ITA AirwaysPriceFrom $429Free CancellationRating
6.7
1,128 reviews
Search ITA Airways flights
Scandinavian AirlinesPriceFrom $442Free CancellationRating
7.3
1,654 reviews
Search Scandinavian Airlines flights

  • Finnair Flights From Boston to Barcelona-El Prat Airport

    Finnair flies from Boston to Barcelona-El Prat Airport around 4 times per week, with 1,349 momondo users rating the airline 7.6/10. The cheapest Finnair deal from Boston to Barcelona-El Prat Airport in the last 72 hours was $349 (round-trip), much lower than the average airfare cost of $514 for Finnair flights on this route.

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
El Prat de Llobregat
Castelldefels
Tarragona
L'Hospitalet de Llobregat
Santa Susanna
Cambrils
Cadaques
Calella
Empuriabrava
Pals
Roses
Badalona
Pineda de Mar
Palafrugell
Tortosa
La Pineda

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Barcelona?

It is quick and easy to find Boston to Barcelona flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Barcelona that suits you.

Can I find flights from Boston to Barcelona with flexible booking policies on momondo?

Flights from Boston to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Barcelona?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Barcelona.

I’m not ready to book a flight from Boston to Barcelona right now. Can momondo alert me if prices change?

Price alerts on flights to Barcelona from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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