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Cheap flights from Boston to Bilbao from $358

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 8/2. 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.
Iberia Logo
9:20 pm - 8:50 pm
BOS
-
BIO
17h 30m
1 stop
Iberia Logo
9:35 pm - 6:48 pm
BIO
-
BOS
27h 13m
2 stops
$633Iberia
Mon, May 4 - Mon, May 11
United Airlines Logo
7:25 pm - 5:55 pm
BOS
-
BIO
40h 30m
2 stops
United Airlines Logo
7:15 am - 5:40 pm
BIO
-
BOS
16h 25m
1 stop
$647United Airlines
Sat, Aug 15 - Tue, Sep 1
Multiple Airlines Logo
5:40 pm - 10:25 pm
BOS
-
BIO
22h 45m
2 stops
Multiple Airlines Logo
8:55 am - 3:35 pm
BIO
-
BOS
36h 40m
2 stops
$649Multiple Airlines
Tue, Sep 8 - Tue, Sep 22
Delta Logo
6:10 pm - 4:30 pm
BOS
-
BIO
16h 20m
2 stops
Delta Logo
10:30 am - 2:55 pm
BIO
-
BOS
10h 25m
1 stop
$655Delta
Wed, May 6 - Tue, May 12
United Airlines Logo
7:30 am - 4:00 pm
BOS
-
BIO
26h 30m
2 stops
United Airlines Logo
6:45 am - 7:14 pm
BIO
-
BOS
18h 29m
2 stops
$663United Airlines
Sun, May 10 - Fri, May 22
Delta Logo
6:10 pm - 4:30 pm
BOS
-
BIO
16h 20m
2 stops
Delta Logo
6:45 am - 6:58 pm
BIO
-
BOS
18h 13m
2 stops
$665Delta
Wed, May 6 - 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
$669SWISS
Wed, Sep 9 - Tue, Sep 22
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
$671Turkish Airlines
Tue, Sep 8 - Tue, Sep 22
KLM Logo
5:25 pm - 3:55 pm
BOS
-
BIO
16h 30m
1 stop
KLM Logo
8:20 am - 4:35 pm
BIO
-
BOS
14h 15m
1 stop
$674KLM
Sat, Aug 15 - Tue, Sep 1
United Airlines Logo
7:30 am - 4:00 pm
BOS
-
BIO
26h 30m
2 stops
United Airlines Logo
2:00 pm - 9:27 pm
BIO
-
BOS
37h 27m
2 stops
$677United Airlines
Sun, May 3 - Thu, May 14

Iberia flights from Boston to Bilbao

Our best Iberia deals on Boston to Bilbao flight tickets
Iberia
May 4
BOS9:20 pmBoston Logan Intl
17h 30m
1 stop
BIO8:50 pmBilbao
May 11
BIO9:35 pmBilbao
27h 13m
2 stops
BOS6:48 pmBoston Logan Intl
$633
Iberia
May 4
BOS11:34 amBoston Logan Intl
14h 56m
2 stops
BIO8:30 amBilbao
May 11
BIO9:35 pmBilbao
27h 13m
2 stops
BOS6:48 pmBoston Logan Intl
$723
Iberia
Jul 4
BOS7:41 pmBoston Logan Intl
35h 04m
2 stops
BIO12:45 pmBilbao
Jul 13
BIO9:35 pmBilbao
28h 15m
1 stop
BOS7:50 pmBoston Logan Intl
$746

United Airlines flights from Boston to Bilbao

Our best United Airlines deals on Boston to Bilbao flight tickets
United Airlines
Aug 15
BOS7:25 pmBoston Logan Intl
40h 30m
2 stops
BIO5:55 pmBilbao
Sep 1
BIO7:15 amBilbao
16h 25m
1 stop
BOS5:40 pmBoston Logan Intl
$647
United Airlines
May 10
BOS7:30 amBoston Logan Intl
26h 30m
2 stops
BIO4:00 pmBilbao
May 22
BIO6:45 amBilbao
18h 29m
2 stops
BOS7:14 pmBoston Logan Intl
$663
United Airlines
May 3
BOS7:30 amBoston Logan Intl
26h 30m
2 stops
BIO4:00 pmBilbao
May 14
BIO2:00 pmBilbao
37h 27m
2 stops
BOS9:27 pmBoston Logan Intl
$677

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 13, 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 5/4

9:20 pm-8:50 pm

1 stop17h 30m

Bilbao

Mon 5/11

9:35 pm-6:48 pm

2 stops27h 13m

$633

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sat 8/15

7:25 pm-5:55 pm

2 stops40h 30m

Bilbao

Tue 9/1

7:15 am-5:40 pm

1 stop16h 25m

$647

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 9/8

5:40 pm-10:25 pm

2 stops22h 45m

Bilbao

Tue 9/22

8:55 am-3:35 pm

2 stops36h 40m

$649
Quickest round-trip

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 5/6

6:10 pm-4:30 pm

2 stops16h 20m

Bilbao

Tue 5/12

10:30 am-2:55 pm

1 stop10h 25m

$655

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 5/10

7:30 am-4:00 pm

2 stops26h 30m

Bilbao

Fri 5/22

6:45 am-7:14 pm

2 stops18h 29m

$663

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Wed 5/6

6:10 pm-4:30 pm

2 stops16h 20m

Bilbao

Tue 5/12

6:45 am-6:58 pm

2 stops18h 13m

$665

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

$669

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Tue 9/8

9:50 pm-5:20 pm

1 stop37h 30m

Bilbao

Tue 9/22

12:10 pm-7:55 pm

1 stop37h 45m

$671

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sat 8/15

5:25 pm-3:55 pm

1 stop16h 30m

Bilbao

Tue 9/1

8:20 am-4:35 pm

1 stop14h 15m

$674

BostonBilbao

BOS - BIO

BOSBIO

Boston Logan Intl

Sun 5/3

7:30 am-4:00 pm

2 stops26h 30m

Bilbao

Thu 5/14

2:00 pm-9:27 pm

2 stops37h 27m

$677

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 $670 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

11h 55m

Direct flights

None
The fastest flight from Boston to Bilbao takes 11h 55m
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 55m.

  • 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
3,179 reviews
Search Iberia flights
DeltaPriceFrom $424Free CancellationRating
7.9
8,408 reviews
Search Delta flights
American AirlinesPriceFrom $424Free CancellationRating
7.1
11,572 reviews
Search American Airlines flights
LufthansaPriceFrom $453Free CancellationRating
6.8
7,920 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,203 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $499Free CancellationRating
7.4
9,581 reviews
Search United Airlines flights
KLMPriceFrom $516Free CancellationRating
7.8
1,496 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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