BOS - BIO

$226 Find Cheap Flights from Boston to Bilbao - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$591
Typical prices: $700-$1,078
Multiple Airlines
Thu 10/4Sat 10/20
BOS - BIO • 2 stops
Cheapest one-way
$226
Typical prices: $407-$565
LEVEL
Sun 10/21
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 $700 (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

Sun, Oct 4 - Tue, Oct 20
Multiple Airlines Logo
8:50 pm - 8:15 amBOS  Boston Logan Intl-BIO Bilbao
29h 25m2 stops Reykjavik Keflavik Intl Barcelona-El Prat
Multiple Airlines Logo
10:50 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
28h 15m1 stop Barcelona-El Prat
$591Multiple Airlines
Sun, Oct 4 - Tue, Oct 20
Multiple Airlines Logo
11:35 pm - 8:15 amBOS  Boston Logan Intl-BIO Bilbao
26h 40m1 stop Barcelona-El Prat
Multiple Airlines Logo
10:50 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
28h 15m1 stop Barcelona-El Prat
$599Multiple Airlines
Wed, Sep 16 - Tue, Sep 22
LEVEL Logo
10:55 pm - 5:35 pmBOS  Boston Logan Intl-BIO Bilbao
12h 40m1 stop Barcelona-El Prat
LEVEL Logo
10:50 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
28h 15m1 stop Barcelona-El Prat
$637LEVEL
Mon, Nov 2 - Tue, Nov 10
Lufthansa Logo
8:40 pm - 11:10 pmBOS  Boston Logan Intl-BIO Bilbao
20h 30m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:30 am - 6:35 pmBIO  Bilbao-BOS Boston Logan Intl
17h 05m1 stop Munich Franz Josef Strauss
$648Lufthansa
Wed, Sep 30 - Wed, Oct 7
Iberia Logo
9:05 pm - 11:15 pmBOS  Boston Logan Intl-BIO Bilbao
20h 10m1 stop Madrid Barajas
Iberia Logo
3:30 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
11h 35m1 stop Barcelona-El Prat
$651Iberia
Sun, Oct 4 - Tue, Oct 20
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
$652Lufthansa
Wed, Sep 30 - Wed, Oct 7
Iberia Logo
11:35 am - 8:30 amBOS  Boston Logan Intl-BIO Bilbao
14h 55m2 stops New York John F Kennedy Intl Madrid Barajas
Iberia Logo
2:25 pm - 9:05 pmBIO  Bilbao-BOS Boston Logan Intl
12h 40m1 stop Barcelona-El Prat
$654Iberia
Sun, Oct 4 - Tue, Oct 20
American Airlines Logo
5:28 pm - 12:45 pmBOS  Boston Logan Intl-BIO Bilbao
13h 17m2 stops New York John F Kennedy Intl Madrid Barajas
American Airlines Logo
9:15 am - 7:50 pmBIO  Bilbao-BOS Boston Logan Intl
16h 35m1 stop Madrid Barajas
$655American Airlines
Sun, Oct 4 - Tue, Oct 20
American Airlines Logo
5:28 pm - 12:45 pmBOS  Boston Logan Intl-BIO Bilbao
13h 17m2 stops New York John F Kennedy Intl Madrid Barajas
American Airlines Logo
9:15 am - 7:50 pmBIO  Bilbao-BOS Boston Logan Intl
16h 35m1 stop Madrid Barajas
$656American Airlines
Thu, Sep 10 - Sat, Sep 19
LEVEL Logo
10:55 pm - 8:15 amBOS  Boston Logan Intl-BIO Bilbao
27h 20m1 stop Barcelona-El Prat
LEVEL Logo
7:15 pm - 9:45 pmBIO  Bilbao-BOS Boston Logan Intl
32h 30m1 stop Barcelona-El Prat
$658LEVEL
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.

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

$226
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?

    Only Economy Class is available on flights from Boston to Bilbao.

  • 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) - 12% 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 long is a flight from Boston to Bilbao?

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

  • What are the earliest and latest flights from Boston to Bilbao?

    These are the earliest and latest flight times available from Boston to Bilbao:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • 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.

  • 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 lower than usual. Average one-way flight prices are about $423, which is 12% below 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 51m 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).

Everything you need to know for your flight from Boston to Bilbao

Information on your arrival and departure airports

Boston (BOS)
Bilbao (BIO)