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Flights from Boston to Bilbao

Find cheap airlines flights from Boston to Bilbao

You can choose from 1 airlines that fly from Boston to Bilbao, including Lufthansa, United Airlines has lowest fares on this route.
Lufthansa logo Lufthansa
Airlines are determined based on actual purchased flight tickets from Boston to Bilbao according to previous 12 months data from Trip.com.

Find flight deals from Boston to Bilbao for the next 3 months. Book one way flights from $486 or round trip flights from $385.

      • BOS 10:50 PM
        17h 20m
        1 stop
        BIO 10:10 PM
        Boston - Bilbao | Tue, Apr 21 | Iberia
        BIO 3:30 PM
        11h 35m
        1 stop
        BOS 9:05 PM
        Bilbao - Boston | Wed, Apr 29 | Iberia
        $385 $471
        18% off
        18% off
        $471 $385
      • BOS 10:50 PM
        18h 10m
        1 stop
        BIO 11:00 PM
        Boston - Bilbao | Wed, Apr 15 | Iberia
        BIO 7:00 AM
        20h 5m
        1 stop
        BOS 9:05 PM
        Bilbao - Boston | Tue, Apr 21 | Iberia
        $399 $471
        15% off
        15% off
        $471 $399
      • BOS 9:20 PM
        19h 55m
        1 stop
        BIO 11:15 PM
        Boston - Bilbao | Mon, Apr 13 | Iberia
        BIO 7:25 PM
        31h 40m
        1 stop
        BOS 9:05 PM
        Bilbao - Boston | Mon, Apr 20 | Iberia
        $406 $471
        14% off
        14% off
        $471 $406
      • BOS 8:05 PM
        15h 50m
        1 stop
        BIO 5:55 PM
        Boston - Bilbao | Tue, Apr 21 | United Airlines
        BIO 7:15 AM
        16h 25m
        1 stop
        BOS 5:40 PM
        Bilbao - Boston | Wed, Apr 29 | Lufthansa
        $407
        14% off
        $471 $407
      • BOS 5:25 PM
        16h 30m
        1 stop
        BIO 3:55 PM
        Boston - Bilbao | Wed, May 6 | KLM
        BIO 8:20 AM
        14h 13m
        1 stop
        BOS 4:33 PM
        Bilbao - Boston | Tue, May 12 | KLM
        $416
        12% off
        $471 $416
      • BOS 10:50 PM
        11h 45m
        1 stop
        BIO 4:35 PM
        Boston - Bilbao | Wed, Apr 22 | Iberia
        BIO 2:25 PM
        12h 40m
        1 stop
        BOS 9:05 PM
        Bilbao - Boston | Wed, Apr 29 | Iberia
        $421
        11% off
        $471 $421
      • BOS 8:05 PM
        15h 50m
        1 stop
        BIO 5:55 PM
        Boston - Bilbao | Tue, Apr 21 | Lufthansa
        BIO 11:55 AM
        11h 45m
        1 stop
        BOS 5:40 PM
        Bilbao - Boston | Wed, Apr 29 | United Airlines
        $422
        10% off
        $471 $422
      • BOS 5:40 PM
        17h 15m
        1 stop
        BIO 4:55 PM
        Boston - Bilbao | Wed, Apr 29 | Iberia
        BIO 1:10 PM
        13h 55m
        1 stop
        BOS 9:05 PM
        Bilbao - Boston | Wed, May 6 | Iberia
        $425
        10% off
        $471 $425
      • BOS 10:50 PM
        12h 45m
        1 stop
        BIO 5:35 PM
        Boston - Bilbao | Wed, May 6 | Iberia
        BIO 5:35 PM
        32h 15m
        1 stop
        BOS 7:50 PM
        Bilbao - Boston | Tue, May 12 | Iberia
        $425
        10% off
        $471 $425
      • BOS 9:20 PM
        19h 55m
        1 stop
        BIO 11:15 PM
        Boston - Bilbao | Wed, Apr 29 | Finnair
        BIO 6:45 AM
        15h 25m
        1 stop
        BOS 4:10 PM
        Bilbao - Boston | Wed, May 6 | Finnair
        $428
        9% off
        $471 $428
      • BOS 1:00 PM
        17h 25m
        1 stop
        BIO Invalid Date
        Boston - Bilbao | Tue, Apr 14 | Normal Airline
        BIO 3:00 PM
        6h
        Nonstop
        BOS 4:00 PM
        Bilbao - Boston | Thu, Apr 16 | Normal Airline
        Find more flights
        Find more flights
      • BOS 8:05 PM
        21h 20m
        1 stop
        BIO 11:25 PM
        Boston - Bilbao | Fri, Apr 17 | United Airlines
        $486 $725
        33% off
        33% off
        $725 $486
      • BOS 8:05 PM
        15h 50m
        1 stop
        BIO 5:55 PM
        Boston - Bilbao | Fri, Apr 17 | Lufthansa
        $517 $725
        28% off
        28% off
        $725 $517
      • BOS 9:15 PM
        14h 10m
        1 stop
        BIO 5:25 PM
        Boston - Bilbao | Thu, May 28 | Aer Lingus
        $538 $725
        26% off
        26% off
        $725 $538
      • BOS 8:05 PM
        21h 20m
        1 stop
        BIO 11:25 PM
        Boston - Bilbao | Thu, May 28 | United Airlines
        $543
        25% off
        $725 $543
      • BOS 10:45 PM
        13h 15m
        1 stop
        BIO 6:00 PM
        Boston - Bilbao | Thu, May 28 | TAP Air Portugal
        $547
        25% off
        $725 $547
      • BOS 5:25 PM
        16h 30m
        1 stop
        BIO 3:55 PM
        Boston - Bilbao | Thu, May 28 | KLM
        $590
        19% off
        $725 $590
      • BOS 8:05 PM
        15h 50m
        1 stop
        BIO 5:55 PM
        Boston - Bilbao | Thu, May 28 | Lufthansa
        $590
        19% off
        $725 $590
      • BOS 9:40 PM
        16h 25m
        1 stop
        BIO 8:05 PM
        Boston - Bilbao | Thu, May 28 | Swiss Airlines
        $594
        18% off
        $725 $594
      • BOS 5:20 PM
        20h 45m
        1 stop
        BIO 8:05 PM
        Boston - Bilbao | Thu, May 28 | Austrian Airlines
        $595
        18% off
        $725 $595
      • BOS 4:35 PM
        17h 55m
        1 stop
        BIO 4:30 PM
        Boston - Bilbao | Thu, May 28 | Virgin Atlantic
        $659
        9% off
        $725 $659
      • BOS 1:00 PM
        17h 25m
        1 stop
        BIO Invalid Date
        Boston - Bilbao | Tue, Apr 14 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Boston to Bilbao are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Boston to Bilbao

The distance between Boston and Bilbao is approximately 5,391.32 km. Based on Trip.com's data travel demand peaks in January. The off-season for travel is October.

Cheapest one-way flight price$486
Cheapest round-trip ticket price$385
Off-season for travelOctober
Peak season for travelJanuary
Flight distance5,391.32 km
Popular airlineLufthansa
Flight statistics for the Boston–Bilbao route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Boston to Bilbao (BOS-BIO)?

    Based on Trip.com data, United Airlines offers one-way fares as low as $486 on Cheapest nonstop routes (e.g. BOS to BIO on Fri, Apr 17), while Iberia offers Cheapest nonstop round-trips from $385 departing on Tue, Apr 21 and returning on Wed, Apr 29.
  • At the moment, several airlines serve connecting flights from Boston to Bilbao, including: Lufthansa Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to Bilbao is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Boston to Bilbao, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Apr 17, with one-way flights priced at just $486.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Bilbao travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Boston to Bilbao is October, when demand for travel is lower.
  • After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Boston to Bilbao on April 21, 2026 with Iberia, with prices starting at $385.
  • You can land at any one of the following hubs in Bilbao, with Boston Logan International Airport to Bilbao Airport (BOS-BIO) is by far the most common option on this route: Bilbao Airport (BIO).
  • The time difference between Bilbao and Boston is 6h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.