$713 Cheap Finnair flights Bilbao (BIO) to Washington (IAD)

View $713 flight on Tue, Jan 20, 2026Opens in a new window

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$713 Cheap Finnair flights Bilbao (BIO) to Washington (IAD)

Prices were available within the past 7 days and start at $713 for one-way flights and $749 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Tue, Oct 21 - Tue, Nov 4
BIO
Bilbao
IAD
Washington
$749 Roundtrip, found 1 day ago
$749
Roundtrip
found 1 day ago
Select Finnair flight, departing Tue, Oct 21 from Bilbao to Washington, returning Tue, Nov 4, priced at $749 found 1 day ago
Flights from Bilbao (BIO) to Washington (IAD)
Origin airport
Bilbao
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Popular airline
Aer Lingus
Distance
3758 mi

Frequently asked questions

How much is a Finnair flight from Bilbao Airport (BIO) to Washington Dulles Intl. Airport (IAD)?
Scoring cheap one-way Finnair flights from BIO to IAD from $713 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $749 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BIO to IAD with Finnair?
Finnair flights to Washington tend to be cheaper in the quieter months of January and February. Whether you're after a one-way or a return ticket, you could score a better deal then.
What is the cheapest time to book flights from Bilbao Airport (BIO) to Washington Dulles Intl. Airport (IAD) with Finnair?
To get cheap flights from BIO to IAD with Finnair, start searching about one month before your planned departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another good tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Finnair fly nonstop from Bilbao Airport (BIO) to Washington Dulles Intl. Airport (IAD)?
Use the "Nonstop" filter when looking for direct Finnair flights from BIO to IAD. It's also an easy way to compare other carriers servicing the same nonstop trip.
What is the earliest Finnair flight from BIO to IAD?
To find the earliest departures from BIO to IAD with Finnair, filter your results by "Early Morning" and "Morning." Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Finnair fly into in Washington?
Take a Finnair flight from Bilbao Airport (BIO) to Washington, and you're most likely to touch down at Washington Dulles Intl. Airport (IAD). This is the airline's primary hub in this destination.
What kind of luggage can I take on a Finnair flight from Bilbao Airport (BIO) to Washington Dulles Intl. Airport (IAD)?
On a standard economy flight with Finnair from BIO to IAD, passengers can bring 1 checked-in bag up to 50 lb with dimensions no larger than 62 inches in total. For hand luggage, you're permitted 1 cabin bag weighing up to 22 lb and measuring less than 9 inches x 15 inches x 15 inches. Size and weight limits can differ depending on the cabin class you're in and airfare type. To make sure you don't get caught with extra charges at the terminal, double-check your Finnair booking or visit the airline's website before loading up your suitcase.
Why fly with Finnair from BIO to IAD?
With a 4-star airline rating and a rewarding loyalty program, Finnair is a favorite for many passengers flying from BIO to IAD. What's more, if you're a Finnair Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Finnair flight from Bilbao Airport (BIO) to Washington Dulles Intl. Airport (IAD)?
Depending on your ticket type, a fee is typically charged if you cancel or reschedule your booking more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "No cancel fee" or "Changes included" filter when you search for flights. For additional information on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.