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Cheap flights from Boston to Barcelona from C$ 318

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 21/3. 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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Find the cheapest flights from Boston to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
6:05 p.m. - 4:55 p.m.
BOS
-
BCN
16h 50m1 stop
TAP AIR PORTUGAL Logo
8:20 p.m. - 2:40 p.m.
BCN
-
BOS
24h 20m1 stop
C$ 534TAP AIR PORTUGAL
Mon, 20 Apr - Mon, 4 May
LEVEL Logo
10:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
LEVEL Logo
6:10 p.m. - 8:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 536LEVEL
Sat, 17 Jan - Sun, 25 Jan
Icelandair Logo
7:50 p.m. - 1:15 p.m.
BOS
-
BCN
11h 25m1 stop
Icelandair Logo
11:50 a.m. - 5:50 p.m.
BCN
-
BOS
12h 00m1 stop
C$ 537Icelandair
Wed, 18 Feb - Tue, 3 Mar
Iberia Logo
11:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
Iberia Logo
6:10 p.m. - 9:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 549Iberia
Mon, 9 Mar - Mon, 16 Mar
Iberia Logo
10:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
Iberia Logo
6:10 p.m. - 8:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 551Iberia
Thu, 22 Jan - Thu, 29 Jan
LEVEL Logo
10:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
LEVEL Logo
6:10 p.m. - 8:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 570LEVEL
Sun, 18 Jan - Sat, 24 Jan
Iberia Logo
10:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
Iberia Logo
6:10 p.m. - 8:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 584Iberia
Sat, 31 Jan - Thu, 5 Feb
LEVEL Logo
10:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
LEVEL Logo
6:10 p.m. - 9:55 p.m.
BCN
-
BOS
8h 45mdirect
C$ 602LEVEL
Thu, 5 Mar - Mon, 9 Mar
LEVEL Logo
11:40 p.m. - 11:55 a.m.
BOS
-
BCN
7h 15mdirect
LEVEL Logo
6:30 p.m. - 9:05 p.m.
BCN
-
BOS
8h 35mdirect
C$ 604LEVEL
Tue, 17 Mar - Tue, 7 Apr
United Airlines Logo
10:15 a.m. - 9:35 a.m.
BOS
-
BCN
17h 20m1 stop
United Airlines Logo
1:35 p.m. - 5:19 p.m.
BCN
-
BOS
33h 44m2 stops
C$ 606United Airlines
Wed, 4 Feb - Thu, 12 Feb

TAP AIR PORTUGAL flights from Boston to Barcelona-El Prat Airport

Our best TAP AIR PORTUGAL deals on Boston to Barcelona-El Prat Airport flight tickets
TAP AIR PORTUGAL
20 Apr
BOS6:05 p.m.Boston Logan Intl
16h 50m
1 stop
BCN4:55 p.m.Barcelona-El Prat
4 May
BCN8:20 p.m.Barcelona-El Prat
24h 20m
1 stop
BOS2:40 p.m.Boston Logan Intl
C$ 534
Find similar
TAP AIR PORTUGAL
19 Mar
BOS11:45 p.m.Boston Logan Intl
12h 30m
1 stop
BCN5:15 p.m.Barcelona-El Prat
23 Mar
BCN6:05 p.m.Barcelona-El Prat
26h 40m
1 stop
BOS3:45 p.m.Boston Logan Intl
C$ 659
Find similar

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
4 Feb
BOS10:15 a.m.Boston Logan Intl
17h 20m
1 stop
BCN9:35 a.m.Barcelona-El Prat
12 Feb
BCN1:35 p.m.Barcelona-El Prat
33h 44m
2 stops
BOS5:19 p.m.Boston Logan Intl
C$ 606
Find similar
United Airlines
15 Mar
BOS6:40 p.m.Boston Logan Intl
32h 55m
1 stop
BCN8:35 a.m.Barcelona-El Prat
1 Apr
BCN1:15 p.m.Barcelona-El Prat
29h 55m
2 stops
BOS1:10 p.m.Boston Logan Intl
C$ 611
Find similar
United Airlines
12 Jan
BOS10:30 a.m.Boston Logan Intl
17h 05m
2 stops
BCN9:35 a.m.Barcelona-El Prat
15 Jan
BCN1:35 p.m.Barcelona-El Prat
27h 32m
2 stops
BOS11:07 a.m.Boston Logan Intl
C$ 613
Find similar

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 96,600 searches. Data last updated 16 December 2025.
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

Mon 20/4

6:05 p.m.-4:55 p.m.

1 stop16h 50m

Barcelona-El Prat

Mon 4/5

8:20 p.m.-2:40 p.m.

1 stop24h 20m

C$ 534

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 17/1

10:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Sun 25/1

6:10 p.m.-8:55 p.m.

Nonstop8h 45m

C$ 536

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 18/2

7:50 p.m.-1:15 p.m.

1 stop11h 25m

Barcelona-El Prat

Tue 3/3

11:50 a.m.-5:50 p.m.

1 stop12h 00m

C$ 537

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Mon 9/3

11:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Mon 16/3

6:10 p.m.-9:55 p.m.

Nonstop8h 45m

C$ 549

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 22/1

10:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Thu 29/1

6:10 p.m.-8:55 p.m.

Nonstop8h 45m

C$ 551

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sun 18/1

10:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Sat 24/1

6:10 p.m.-8:55 p.m.

Nonstop8h 45m

C$ 570

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Sat 31/1

10:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Thu 5/2

6:10 p.m.-8:55 p.m.

Nonstop8h 45m

C$ 584

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Thu 5/3

10:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Mon 9/3

6:10 p.m.-9:55 p.m.

Nonstop8h 45m

C$ 602

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Tue 17/3

11:40 p.m.-11:55 a.m.

Nonstop7h 15m

Barcelona-El Prat

Tue 7/4

6:30 p.m.-9:05 p.m.

Nonstop8h 35m

C$ 604

BostonBarcelona

BOS - BCN

BOSBCN

Boston Logan Intl

Wed 4/2

10:15 a.m.-9:35 a.m.

1 stop17h 20m

Barcelona-El Prat

Thu 12/2

1:35 p.m.-5:19 p.m.

2 stops33h 44m

C$ 606

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 C$ 653, are often lower during this time because this is during the off-season. If you are unable to visit Barcelona-El Prat Airport during the month of September, then departing from Boston during the month January is also very affordable. Most momondo users find prices during this month for around C$ 665.

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

The cheapest day to depart from Boston to Barcelona-El Prat Airport is on a Monday. Travellers who choose to depart for Barcelona-El Prat Airport on a Monday will often find tickets for as low as C$ 575. On the other hand, Tuesday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 760.

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

Our most recent data shows that the best time of day to fly to Barcelona-El Prat Airport is in the evening. Flights from Boston to Barcelona-El Prat Airport during this time can be as low as C$ 640. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 874 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 travellers’ 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 C$ 784 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 C$ 679 on momondo.

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

There is only 1 cabin class 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.

Can stopping save me money on Boston to Barcelona-El Prat Airport flights?

You could potentially save up to 22% on your flight if you consider stops on a Boston to Barcelona-El Prat Airport flight.

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

As of December 2025, prices for Boston to Barcelona-El Prat Airport flights are approximately 25% 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

C$ 551

Fastest flight time

11h 55m

Direct flights

Every day
The best flight deal from Boston to Barcelona-El Prat Airport found on momondo in the last 72 hours is C$ 551
The fastest flight from Boston to Barcelona-El Prat Airport takes 11h 55m
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?

    Boston Logan Intl and Barcelona-El Prat are 5858.5 km apart from one another. Typically, this will take 11h 55m 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 are updated 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 required travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Barcelona-El Prat Airport. We recommend that you seek guidance from your airline or a reliable 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
LEVELPriceFrom C$ 437Free CancellationRating
0.0
Search LEVEL flights
IberiaPriceFrom C$ 460Free CancellationRating
7.0
3,052 reviews
Search Iberia flights
VuelingPriceFrom C$ 563Free CancellationRating
7.1
1,218 reviews
Search Vueling flights

  • Vueling Flights From Boston to Barcelona-El Prat Airport

    Vueling flies from Boston to Barcelona-El Prat Airport around 5 times per week, with 1,218 momondo users rating the airline 7.1/10. The cheapest Vueling deal from Boston to Barcelona-El Prat Airport in the last 72 hours was C$ 563 (round-trip), much lower than the average airfare cost of C$ 631 for Vueling flights on this route.

  • Iberia Flights From Boston to Barcelona-El Prat Airport

    Another popular option for Boston to Barcelona-El Prat Airport flights is Iberia (7.0/10, 3,052 ratings). Iberia flies from Boston to Barcelona-El Prat Airport around 3 times per week, with deals starting from C$ 460 round-trip and rising to an average price of around C$ 615.

Travelling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Sitges
Calella de Palafrugell
L'Hospitalet de Llobregat
Cadaques
Castelldefels
Malgrat de Mar
El Prat de Llobregat
Tarragona
Badalona
Llafranc
Lloret de Mar
Calella
Pineda de Mar
Salou
Tossa de Mar

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Barcelona. momondo saves you time and could save you money on your trip.

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Barcelona from Boston.

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

Yes momondo offers price alerts on flights to Barcelona from Boston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Barcelona-El Prat Airport trip

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