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Cheap flights from Boston to Bilbao from $251

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 Bilbao departing on 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
9:20 pm - 11:15 pm
BOS
-
BIO
19h 55m
1 stop
Finnair Logo
6:45 am - 11:52 pm
BIO
-
BOS
23h 07m
2 stops
$368Finnair
Mon, Apr 13 - Wed, Apr 29
Iberia Logo
10:50 pm - 4:25 pm
BOS
-
BIO
11h 35m
1 stop
Iberia Logo
2:25 pm - 9:05 pm
BIO
-
BOS
12h 40m
1 stop
$371Iberia
Mon, Apr 20 - Wed, Apr 29
Iberia Logo
10:50 pm - 6:45 pm
BOS
-
BIO
13h 55m
1 stop
Iberia Logo
9:15 am - 11:52 pm
BIO
-
BOS
20h 37m
2 stops
$384Iberia
Mon, Apr 20 - Wed, Apr 29
Multiple Airlines Logo
5:40 pm - 12:45 pm
BOS
-
BIO
13h 05m
1 stop
Multiple Airlines Logo
6:45 am - 11:52 pm
BIO
-
BOS
23h 07m
2 stops
$385Multiple Airlines
Mon, Apr 20 - Wed, Apr 29
British Airways Logo
9:20 pm - 4:55 pm
BOS
-
BIO
13h 35m
1 stop
British Airways Logo
9:35 pm - 7:50 pm
BIO
-
BOS
28h 15m
1 stop
$386British Airways
Mon, Apr 13 - Wed, Apr 29
American Airlines Logo
11:34 am - 8:30 am
BOS
-
BIO
14h 56m
2 stops
American Airlines Logo
1:30 pm - 11:52 pm
BIO
-
BOS
16h 22m
2 stops
$389American Airlines
Mon, Apr 20 - Wed, Apr 29
KLM Logo
5:20 pm - 3:55 pm
BOS
-
BIO
16h 35m
1 stop
KLM Logo
8:20 am - 4:31 pm
BIO
-
BOS
14h 11m
1 stop
$400KLM
Mon, Jul 27 - Wed, Aug 26
Air France Logo
9:30 pm - 10:25 pm
BOS
-
BIO
19h 55m
1 stop
Air France Logo
12:15 pm - 2:30 pm
BIO
-
BOS
31h 15m
1 stop
$402Air France
Tue, Mar 10 - Mon, Mar 16
United Airlines Logo
4:35 pm - 11:10 am
BOS
-
BIO
36h 35m
2 stops
United Airlines Logo
6:50 am - 6:01 pm
BIO
-
BOS
41h 11m
2 stops
$413United Airlines
Mon, Apr 20 - Wed, Apr 29
American Airlines Logo
3:17 pm - 12:45 pm
BOS
-
BIO
15h 28m
2 stops
American Airlines Logo
1:30 pm - 11:52 pm
BIO
-
BOS
16h 22m
2 stops
$414American Airlines
Mon, Apr 20 - Wed, Apr 29

American Airlines flights from Boston to Bilbao

Our best American Airlines deals on Boston to Bilbao flight tickets
American Airlines
Apr 20
BOS11:34 amBoston Logan Intl
14h 56m
2 stops
BIO8:30 amBilbao
Apr 29
BIO1:30 pmBilbao
16h 22m
2 stops
BOS11:52 pmBoston Logan Intl
$389
American Airlines
Apr 20
BOS3:17 pmBoston Logan Intl
15h 28m
2 stops
BIO12:45 pmBilbao
Apr 29
BIO1:30 pmBilbao
16h 22m
2 stops
BOS11:52 pmBoston Logan Intl
$414
American Airlines
May 7
BOS11:34 amBoston Logan Intl
14h 56m
2 stops
BIO8:30 amBilbao
May 21
BIO1:30 pmBilbao
15h 31m
2 stops
BOS11:01 pmBoston Logan Intl
$464

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets
KLM
Jul 27
BOS5:20 pmBoston Logan Intl
16h 35m
1 stop
BIO3:55 pmBilbao
Aug 26
BIO8:20 amBilbao
14h 11m
1 stop
BOS4:31 pmBoston Logan Intl
$400
KLM
Jul 26
BOS5:20 pmBoston Logan Intl
12h 35m
1 stop
BIO11:55 amBilbao
Aug 26
BIO8:20 amBilbao
14h 11m
1 stop
BOS4:31 pmBoston Logan Intl
$425
KLM
Aug 15
BOS5:25 pmBoston Logan Intl
12h 30m
1 stop
BIO11:55 amBilbao
Sep 1
BIO8:20 amBilbao
14h 15m
1 stop
BOS4:35 pmBoston Logan Intl
$450

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Bilbao 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 February 23, 2026.
Use the filters below to find and compare flights from Boston to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/13

9:20 pm-11:15 pm

1 stop19h 55m

Bilbao

Wed 4/29

6:45 am-11:52 pm

2 stops23h 07m

$368

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

10:50 pm-4:25 pm

1 stop11h 35m

Bilbao

Wed 4/29

2:25 pm-9:05 pm

1 stop12h 40m

$371

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

10:50 pm-6:45 pm

1 stop13h 55m

Bilbao

Wed 4/29

9:15 am-11:52 pm

2 stops20h 37m

$384

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

5:40 pm-12:45 pm

1 stop13h 05m

Bilbao

Wed 4/29

6:45 am-11:52 pm

2 stops23h 07m

$385

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/13

9:20 pm-4:55 pm

1 stop13h 35m

Bilbao

Wed 4/29

9:35 pm-7:50 pm

1 stop28h 15m

$386

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

11:34 am-8:30 am

2 stops14h 56m

Bilbao

Wed 4/29

1:30 pm-11:52 pm

2 stops16h 22m

$389

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 7/27

5:20 pm-3:55 pm

1 stop16h 35m

Bilbao

Wed 8/26

8:20 am-4:31 pm

1 stop14h 11m

$400

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 3/10

9:30 pm-10:25 pm

1 stop19h 55m

Bilbao

Mon 3/16

12:15 pm-2:30 pm

1 stop31h 15m

$402

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

4:35 pm-11:10 am

2 stops36h 35m

Bilbao

Wed 4/29

6:50 am-6:01 pm

2 stops41h 11m

$413

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/20

3:17 pm-12:45 pm

2 stops15h 28m

Bilbao

Wed 4/29

1:30 pm-11:52 pm

2 stops16h 22m

$414

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 Bilbao from

How to get the cheapest flight ticket from Boston to Bilbao

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 typical price of a round-trip flight between Boston and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Boston is in October. Flight prices, which tend to average around $483, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in October, then March is your next best option. Flight prices from Boston to Bilbao during March average around $511.

How far in advance should I book a flight to Bilbao?

You are more likely to see cheaper flights to Bilbao from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Bilbao for around $634 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bilbao from Boston for as low as $524 on momondo.

How have Boston to Bilbao flight prices changed over time?

When to book flights from Boston to Bilbao

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

Cheap Boston to Bilbao (BOS to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Bilbao

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from Boston to Bilbao takes 12h 30m
There are no direct flights from Boston to Bilbao. There are no popular flight routes from Boston to Bilbao.
Search flight deals

  • How far is Boston Logan Intl to Bilbao by plane?

    The straight-line distance from Boston Logan Intl to Bilbao is 3350.6 mi. In terms of flight time, this usually takes a little over 12h 30m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Bilbao Airport?

    Prices for flights from Boston Logan Intl Airport to Bilbao Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Bilbao Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Bilbao 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 Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The travel and health documents required for your trip to Bilbao Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bilbao Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Bilbao?

Best airlines flying from Boston to Bilbao

Compare and see reviews for airlines that fly from Boston to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $381Free CancellationRating
7.0
3,123 reviews
Search Iberia flights
United AirlinesPriceFrom $393Free CancellationRating
7.4
9,344 reviews
Search United Airlines flights
LufthansaPriceFrom $417Free CancellationRating
6.8
7,808 reviews
Search Lufthansa flights
DeltaPriceFrom $424Free CancellationRating
7.9
8,239 reviews
Search Delta flights
American AirlinesPriceFrom $439Free CancellationRating
7.2
11,344 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,149 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $469Free CancellationRating
7.7
1,460 reviews
Search KLM flights
LEVELPriceFrom $523Free CancellationRating
0.0
Search LEVEL flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

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

Finding the right flight to Bilbao from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bilbao quick and easy, saving you time and money.

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

Yes. All flights to Bilbao from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Bilbao from Boston.

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

If you are not ready to book a flight from Boston to Bilbao now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bilbao and let you know when they change.

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