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Cheap flights from Boston to Bilbao from $325

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 8/1. 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.
American Airlines Logo
1:00 pm - 8:30 am
BOS
-
BIO
13h 30m
2 stops
American Airlines Logo
9:15 am - 4:10 pm
BIO
-
BOS
12h 55m
1 stop
$739American Airlines
Thu, Sep 17 - Fri, Sep 25
Delta Logo
5:10 pm - 9:50 am
BOS
-
BIO
10h 40m
1 stop
Delta Logo
7:10 am - 2:55 pm
BIO
-
BOS
13h 45m
1 stop
$740Delta
Sun, Jul 26 - Tue, Aug 11
Lufthansa Logo
8:05 pm - 11:25 pm
BOS
-
BIO
21h 20m
1 stop
Lufthansa Logo
6:50 pm - 7:35 pm
BIO
-
BOS
29h 45m
1 stop
$741Lufthansa
Tue, Oct 20 - Sun, Oct 25
Delta Logo
6:05 am - 9:50 am
BOS
-
BIO
21h 45m
2 stops
Delta Logo
6:45 am - 1:18 pm
BIO
-
BOS
12h 33m
1 stop
$743Delta
Sun, Jul 26 - Wed, Aug 12
Delta Logo
6:05 am - 9:50 am
BOS
-
BIO
21h 45m
2 stops
Delta Logo
7:10 am - 2:55 pm
BIO
-
BOS
13h 45m
1 stop
$744Delta
Sun, Jul 26 - Tue, Aug 11
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
$746Lufthansa
Mon, Jun 1 - Mon, Jun 8
Delta Logo
9:55 am - 9:50 am
BOS
-
BIO
17h 55m
2 stops
Delta Logo
10:30 am - 10:26 pm
BIO
-
BOS
17h 56m
2 stops
$749Delta
Fri, Oct 2 - Wed, Oct 14
Delta Logo
6:05 am - 9:50 am
BOS
-
BIO
21h 45m
2 stops
Delta Logo
7:10 am - 10:36 pm
BIO
-
BOS
21h 26m
2 stops
$754Delta
Sun, Jul 26 - Wed, Aug 12
United Airlines Logo
5:45 am - 11:15 am
BOS
-
BIO
23h 30m
2 stops
United Airlines Logo
7:40 am - 5:40 pm
BIO
-
BOS
16h 00m
1 stop
$756United Airlines
Fri, Sep 4 - Sun, Sep 13
Iberia Logo
11:35 pm - 9:55 am
BOS
-
BIO
28h 20m
1 stop
Iberia Logo
8:55 am - 10:05 pm
BIO
-
BOS
19h 10m
1 stop
$757Iberia
Thu, Aug 27 - Sun, Sep 6

Delta flights from Boston to Bilbao

Our best Delta deals on Boston to Bilbao flight tickets
Delta
Jul 26
BOS5:10 pmBoston Logan Intl
10h 40m
1 stop
BIO9:50 amBilbao
Aug 11
BIO7:10 amBilbao
13h 45m
1 stop
BOS2:55 pmBoston Logan Intl
$740
Delta
Jul 26
BOS6:05 amBoston Logan Intl
21h 45m
2 stops
BIO9:50 amBilbao
Aug 12
BIO6:45 amBilbao
12h 33m
1 stop
BOS1:18 pmBoston Logan Intl
$743
Delta
Jul 26
BOS6:05 amBoston Logan Intl
21h 45m
2 stops
BIO9:50 amBilbao
Aug 11
BIO7:10 amBilbao
13h 45m
1 stop
BOS2:55 pmBoston Logan Intl
$744

Lufthansa flights from Boston to Bilbao

Our best Lufthansa deals on Boston to Bilbao flight tickets
Lufthansa
May 9
BOS8:05 pmBoston Logan Intl
15h 05m
2 stops
BIO5:10 pmBilbao
May 27
BIO7:15 amBilbao
14h 25m
2 stops
BOS3:40 pmBoston Logan Intl
$740
Lufthansa
Oct 20
BOS8:05 pmBoston Logan Intl
21h 20m
1 stop
BIO11:25 pmBilbao
Oct 25
BIO6:50 pmBilbao
29h 45m
1 stop
BOS7:35 pmBoston Logan Intl
$741
Lufthansa
Jun 1
BOS8:05 pmBoston Logan Intl
15h 50m
1 stop
BIO5:55 pmBilbao
Jun 8
BIO6:40 pmBilbao
29h 00m
1 stop
BOS5:40 pmBoston Logan Intl
$746

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 May 5, 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

Thu 9/17

1:00 pm-8:30 am

2 stops13h 30m

Bilbao

Fri 9/25

9:15 am-4:10 pm

1 stop12h 55m

$739
Quickest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 7/26

5:10 pm-9:50 am

1 stop10h 40m

Bilbao

Tue 8/11

7:10 am-2:55 pm

1 stop13h 45m

$740

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 10/20

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Sun 10/25

6:50 pm-7:35 pm

1 stop29h 45m

$741

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 7/26

6:05 am-9:50 am

2 stops21h 45m

Bilbao

Wed 8/12

6:45 am-1:18 pm

1 stop12h 33m

$743

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 7/26

6:05 am-9:50 am

2 stops21h 45m

Bilbao

Tue 8/11

7:10 am-2:55 pm

1 stop13h 45m

$744

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Mon 6/1

8:05 pm-11:25 pm

1 stop21h 20m

Bilbao

Mon 6/8

6:40 pm-5:40 pm

1 stop29h 00m

$746

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Fri 10/2

9:55 am-9:50 am

2 stops17h 55m

Bilbao

Wed 10/14

10:30 am-10:26 pm

2 stops17h 56m

$749

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 7/26

6:05 am-9:50 am

2 stops21h 45m

Bilbao

Wed 8/12

7:10 am-10:36 pm

2 stops21h 26m

$754

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Fri 9/4

5:45 am-11:15 am

2 stops23h 30m

Bilbao

Sun 9/13

7:40 am-5:40 pm

1 stop16h 00m

$756

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Thu 8/27

11:35 pm-9:55 am

1 stop28h 20m

Bilbao

Sun 9/6

8:55 am-10:05 pm

1 stop19h 10m

$757

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 $495.

How far in advance should I book a flight from Boston 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 $695 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 $527 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

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 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 $386Free CancellationRating
7.0
3,208 reviews
Search Iberia flights
United AirlinesPriceFrom $393Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights
American AirlinesPriceFrom $439Free CancellationRating
7.1
11,668 reviews
Search American Airlines flights
LufthansaPriceFrom $453Free CancellationRating
6.8
7,972 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.2
2,234 reviews
Search TAP AIR PORTUGAL flights
DeltaPriceFrom $508Free CancellationRating
7.9
8,459 reviews
Search Delta flights
KLMPriceFrom $559Free CancellationRating
7.8
1,511 reviews
Search KLM flights
Air EuropaPriceFrom $714Free CancellationRating
6.9
605 reviews
Search Air Europa 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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