BOS - BIO

$512 Find Cheap Flights from Boston to Bilbao - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$525
Typical prices: $700-$1,078
TAP AIR PORTUGAL
Thu 1/4Wed 1/17
BOS - BIO • 1 stop
Cheapest one-way
$512
Typical prices: $407-$565
United Airlines
Thu 11/1
BOS - BIO • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Boston and Bilbao. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
10 weeks
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
When to travel
March
Cheapest • 46% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Munich Franz Josef Strauss (MUC)
Cheapest • Avg $693 (round-trip)
Newark (EWR)
Shortest trip • 11h 06m (one-way)
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Insights
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Flight Deals

Cheap Flights from Boston to Bilbao (BOS-BIO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Bilbao

Mon, Jan 4 - Sun, Jan 17
TAP AIR PORTUGAL Logo
10:10 pm - 5:55 pmBOS  Boston Logan Intl-BIO Bilbao
13h 45m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
6:40 pm - 2:40 pmBIO  Bilbao-BOS Boston Logan Intl
26h 00m1 stop Lisbon Humberto Delgado
$525TAP AIR PORTUGAL
Thu, Oct 29 - Sat, Nov 7
TAP AIR PORTUGAL Logo
11:10 pm - 5:55 pmBOS  Boston Logan Intl-BIO Bilbao
13h 45m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
12:10 pm - 2:40 pmBIO  Bilbao-BOS Boston Logan Intl
32h 30m1 stop Lisbon Humberto Delgado
$535TAP AIR PORTUGAL
Wed, Oct 7 - Wed, Oct 14
LEVEL Logo
10:55 pm - 4:35 pmBOS  Boston Logan Intl-BIO Bilbao
11h 40m1 stop Barcelona-El Prat
LEVEL Logo
10:50 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
28h 15m1 stop Barcelona-El Prat
$543LEVEL
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
6:40 pm - 1:00 pmBOS  Boston Logan Intl-BIO Bilbao
12h 20m1 stop Madrid Barajas
Multiple Airlines Logo
8:30 am - 7:00 pmBIO  Bilbao-BOS Boston Logan Intl
15h 30m1 stop Madrid Barajas
$592Multiple Airlines
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
12:29 pm - 9:30 amBOS  Boston Logan Intl-BIO Bilbao
15h 01m2 stops New York John F Kennedy Intl Madrid Barajas
Multiple Airlines Logo
8:30 am - 7:00 pmBIO  Bilbao-BOS Boston Logan Intl
15h 30m1 stop Madrid Barajas
$595Multiple Airlines
Tue, Oct 13 - Mon, Nov 2
Lufthansa Logo
8:05 pm - 5:55 pmBOS  Boston Logan Intl-BIO Bilbao
15h 50m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:30 pm - 6:35 pmBIO  Bilbao-BOS Boston Logan Intl
30h 05m1 stop Munich Franz Josef Strauss
$633Lufthansa
Thu, Oct 22 - Tue, Nov 3
Iberia Logo
5:40 pm - 12:45 pmBOS  Boston Logan Intl-BIO Bilbao
13h 05m1 stop Madrid Barajas
Iberia Logo
1:35 pm - 6:00 pmBIO  Bilbao-BOS Boston Logan Intl
10h 25m1 stop Madrid Barajas
$650Iberia
Thu, Oct 22 - Tue, Nov 3
Iberia Logo
5:40 pm - 4:55 pmBOS  Boston Logan Intl-BIO Bilbao
17h 15m1 stop Madrid Barajas
Iberia Logo
9:15 am - 6:00 pmBIO  Bilbao-BOS Boston Logan Intl
14h 45m1 stop Madrid Barajas
$650Iberia
Tue, Oct 13 - Mon, Nov 2
United Airlines Logo
10:50 am - 11:10 amBOS  Boston Logan Intl-BIO Bilbao
18h 20m2 stops Toronto Pearson Intl Munich Franz Josef Strauss
United Airlines Logo
12:25 pm - 1:30 pmBIO  Bilbao-BOS Boston Logan Intl
31h 05m2 stops Frankfurt am Main Vienna Intl
$662United Airlines
Sat, Oct 10 - Sat, Oct 17
Lufthansa Logo
8:05 pm - 5:55 pmBOS  Boston Logan Intl-BIO Bilbao
15h 50m1 stop Munich Franz Josef Strauss
Lufthansa Logo
11:55 am - 5:40 pmBIO  Bilbao-BOS Boston Logan Intl
11h 45m1 stop Munich Franz Josef Strauss
$761Lufthansa
Booking Insights

Price, demand and travel trends for Boston to Bilbao flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Boston to Bilbao with more confidence.

How much is a round-trip flight from Boston to Bilbao?

Round-trip flights from Boston to Bilbao start at $525. Prices are below average for this route right now, with typical round-trip fares ranging from $700 to $1,078. The lowest price found in the past 5 days was $525 on TAP AIR PORTUGAL.

What's the cheapest day of the week to fly from Boston to Bilbao?

Monday is the cheapest day of the week to fly from Boston to Bilbao, it is 28% cheaper than the average day. Saturday is the most expensive day with flight prices 19% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Boston to Bilbao?

  • March is the cheapest month to fly from Boston to Bilbao at $495 round-trip.
  • July ($1,058) and April ($843) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 113% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boston to Bilbao the cheapest?

Flights from Boston to Bilbao are cheapest 10 weeks before departure. Booking in this window typically costs about 15% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Boston to Bilbao flights

Low season

February

Cheapest flight

$512
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Boston to Bilbao

When to book flights from Boston to Bilbao

Are your dates flexible? Find out the best times to travel from Boston to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boston to Bilbao flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Boston to Bilbao?

    Flights from Boston to Bilbao usually depart from Boston Logan Intl (BOS) and arrive at Bilbao (BIO).

  • What cabin classes can I book on flights from Boston to Bilbao?

    Three cabin classes are available on flights from Boston to Bilbao:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Boston to Bilbao pass through?

    One-stop flights from Boston to Bilbao most commonly connect through:

    • Madrid Barajas (MAD) - 29% of one-stop connections
    • Paris Charles de Gaulle (CDG) - 23% of one-stop connections
    • Amsterdam Schiphol (AMS) - 22% of one-stop connections
    • Barcelona-El Prat (BCN) - 11% of one-stop connections

    Madrid Barajas (MAD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Boston to Bilbao?

    Yes. Being flexible with your travel dates can save you up to 40% on the Boston to Bilbao route. Monday is the cheapest departure day at $664 round-trip on average, while Saturday is the most expensive at $1,098, a difference of $434. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How expensive are last-minute Boston to Bilbao flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 7% below the route average of $917. Booking late can sometimes save money on this route, but inventory is limited.

  • How long is a flight from Boston to Bilbao?

    A nonstop flight from Boston to Bilbao takes 0h 00m, covering 3,348 miles.

  • Do I need a passport to fly from Boston to Bilbao?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Boston to Bilbao looking right now?

    One-way fares from Boston to Bilbao are currently higher than usual. Average one-way flight prices are about $673, which is 40% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Boston to Bilbao?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 11h 06m, compared with 11h 22m via Paris Charles de Gaulle (CDG) and 11h 37m via Barcelona-El Prat (BCN).

  • What is the time difference between Boston and Bilbao?

    Bilbao is 6 hours ahead of Boston (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Bilbao Airport (BIO)?

    Bilbao Airport (BIO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:
    • Record go
    • Goldcar Rental SP
    • CLICK RENT
    • Rentbycar
    • Centauro

  • How much should I expect to pay for a Boston to Bilbao flight?

    Round-trip flights from Boston to Bilbao range from $700 to $1,078, with an average of $917 over the past 12 months. Anything below $700 counts as a good deal.

Your guide to booking Boston to Bilbao flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $664 - about $434 less than Saturday (40% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 15% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to Bilbao trip for March. Fares historically average $495 round-trip in that month - typically $563 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from Boston to Bilbao

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