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Cheap flights from Boston to Bilbao from $252

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 4/27. 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.
Turkish Airlines Logo
9:50 pm - 5:20 pm
BOS
-
BIO
37h 30m
1 stop
Turkish Airlines Logo
12:10 pm - 7:55 pm
BIO
-
BOS
37h 45m
1 stop
$592Turkish Airlines
Mon, Apr 27 - Tue, May 12
TAP AIR PORTUGAL Logo
10:30 pm - 6:00 pm
BOS
-
BIO
13h 30m
2 stops
TAP AIR PORTUGAL Logo
6:50 pm - 8:20 pm
BIO
-
BOS
31h 30m
1 stop
$603TAP AIR PORTUGAL
Mon, Apr 27 - Tue, May 12
SWISS Logo
9:40 pm - 7:55 pm
BOS
-
BIO
16h 15m
1 stop
SWISS Logo
8:55 pm - 3:10 pm
BIO
-
BOS
24h 15m
1 stop
$621SWISS
Wed, Sep 9 - Tue, Sep 22
Multiple Airlines Logo
3:35 pm - 5:55 pm
BOS
-
BIO
20h 20m
2 stops
Multiple Airlines Logo
8:55 pm - 3:10 pm
BIO
-
BOS
24h 15m
1 stop
$622Multiple Airlines
Tue, Sep 8 - Tue, Sep 22
KLM Logo
5:25 pm - 11:55 am
BOS
-
BIO
12h 30m
1 stop
KLM Logo
8:20 am - 4:33 pm
BIO
-
BOS
14h 13m
1 stop
$624KLM
Sun, May 10 - Fri, May 22
Lufthansa Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
Lufthansa Logo
6:40 pm - 5:40 pm
BIO
-
BOS
29h 00m
1 stop
$631Lufthansa
Wed, Sep 9 - Mon, Sep 21
Lufthansa Logo
8:05 pm - 5:55 pm
BOS
-
BIO
15h 50m
1 stop
Lufthansa Logo
6:40 pm - 5:40 pm
BIO
-
BOS
29h 00m
1 stop
$633Lufthansa
Mon, Sep 7 - Mon, Sep 21
Lufthansa Logo
8:05 pm - 5:55 pm
BOS
-
BIO
15h 50m
1 stop
Lufthansa Logo
6:40 pm - 5:40 pm
BIO
-
BOS
29h 00m
1 stop
$634Lufthansa
Tue, Sep 8 - Mon, Sep 21
Delta Logo
7:00 pm - 9:50 am
BOS
-
BIO
32h 50m
1 stop
Delta Logo
12:00 pm - 1:10 pm
BIO
-
BOS
31h 10m
1 stop
$640Delta
Tue, May 5 - Tue, May 26
Delta Logo
12:00 pm - 9:50 am
BOS
-
BIO
15h 50m
2 stops
Delta Logo
6:45 am - 7:22 am
BIO
-
BOS
30h 37m
2 stops
$641Delta
Mon, Apr 27 - Tue, May 12

Lufthansa flights from Boston to Bilbao

Our best Lufthansa deals on Boston to Bilbao flight tickets
Lufthansa
Sep 9
BOS8:05 pmBoston Logan Intl
21h 20m
1 stop
BIO11:25 pmBilbao
Sep 21
BIO6:40 pmBilbao
29h 00m
1 stop
BOS5:40 pmBoston Logan Intl
$631
Lufthansa
Sep 7
BOS8:05 pmBoston Logan Intl
15h 50m
1 stop
BIO5:55 pmBilbao
Sep 21
BIO6:40 pmBilbao
29h 00m
1 stop
BOS5:40 pmBoston Logan Intl
$633
Lufthansa
Sep 8
BOS8:05 pmBoston Logan Intl
15h 50m
1 stop
BIO5:55 pmBilbao
Sep 21
BIO6:40 pmBilbao
29h 00m
1 stop
BOS5:40 pmBoston Logan Intl
$634

KLM flights from Boston to Bilbao

Our best KLM deals on Boston to Bilbao flight tickets
KLM
May 10
BOS5:25 pmBoston Logan Intl
12h 30m
1 stop
BIO11:55 amBilbao
May 22
BIO8:20 amBilbao
14h 13m
1 stop
BOS4:33 pmBoston Logan Intl
$624
KLM
Aug 15
BOS5:25 pmBoston Logan Intl
16h 30m
1 stop
BIO3:55 pmBilbao
Sep 1
BIO8:20 amBilbao
14h 15m
1 stop
BOS4:35 pmBoston Logan Intl
$674
KLM
May 10
BOS5:25 pmBoston Logan Intl
16h 30m
1 stop
BIO3:55 pmBilbao
May 24
BIO8:20 amBilbao
14h 13m
1 stop
BOS4:33 pmBoston Logan Intl
$684

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 April 6, 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

Cheapest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/27

9:50 pm-5:20 pm

1 stop37h 30m

Bilbao

Tue 5/12

12:10 pm-7:55 pm

1 stop37h 45m

$592

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/27

10:30 pm-6:00 pm

2 stops13h 30m

Bilbao

Tue 5/12

6:50 pm-8:20 pm

1 stop31h 30m

$603

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 9/9

9:40 pm-7:55 pm

1 stop16h 15m

Bilbao

Tue 9/22

8:55 pm-3:10 pm

1 stop24h 15m

$621

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 9/8

3:35 pm-5:55 pm

2 stops20h 20m

Bilbao

Tue 9/22

8:55 pm-3:10 pm

1 stop24h 15m

$622
Quickest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 5/10

5:25 pm-11:55 am

1 stop12h 30m

Bilbao

Fri 5/22

8:20 am-4:33 pm

1 stop14h 13m

$624

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 9/9

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Mon 9/21

6:40 pm-5:40 pm

1 stop29h 00m

$631

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 9/7

8:05 pm-5:55 pm

1 stop15h 50m

Bilbao

Mon 9/21

6:40 pm-5:40 pm

1 stop29h 00m

$633

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 9/8

8:05 pm-5:55 pm

1 stop15h 50m

Bilbao

Mon 9/21

6:40 pm-5:40 pm

1 stop29h 00m

$634

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 5/5

7:00 pm-9:50 am

1 stop32h 50m

Bilbao

Tue 5/26

12:00 pm-1:10 pm

1 stop31h 10m

$640

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 4/27

12:00 pm-9:50 am

2 stops15h 50m

Bilbao

Tue 5/12

6:45 am-7:22 am

2 stops30h 37m

$641

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 $482, 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 $495.

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 $656 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 $472 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

11h 45m

Direct flights

None
The fastest flight from Boston to Bilbao takes 11h 45m
There are no direct flights from Boston to Bilbao. There are no popular flight routes from Boston to Bilbao.
Search flight deals

Frequently asked questions about flying from Boston to Bilbao

  • 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 11h 45m.

  • 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 $386Free CancellationRating
7.0
3,166 reviews
Search Iberia flights
DeltaPriceFrom $424Free CancellationRating
7.9
8,388 reviews
Search Delta flights
American AirlinesPriceFrom $439Free CancellationRating
7.1
11,549 reviews
Search American Airlines flights
LufthansaPriceFrom $453Free CancellationRating
6.8
7,894 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,190 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $499Free CancellationRating
7.4
9,548 reviews
Search United Airlines flights
KLMPriceFrom $516Free CancellationRating
7.7
1,491 reviews
Search KLM flights
LEVELPriceFrom $523Free CancellationRating
0.0
Search LEVEL flights
LEVELPriceFrom $897Free CancellationRating
0.0
0 reviews
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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