$518 Cheap Flights from Washington (IAD) to Biarritz (BIQ)

View $518 flight on Mon, Jul 27, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Biarritz (BIQ-Pays Basque)

Cheap Flights from Washington to Biarritz (IAD-BIQ)

Prices were available within the past 7 days and start at $518 for one-way flights and $772 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Jan 24 - Sat, Feb 7
IAD
Washington
BIQ
Biarritz
$772 Roundtrip, found 2 days ago
$772
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 24 from Washington to Biarritz, returning Sat, Feb 7, priced at $772 found 2 days ago
Delta
Sat, Jan 24 - Thu, Feb 5
IAD
Washington
BIQ
Biarritz
$785 Roundtrip, found 2 days ago
$785
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 24 from Washington to Biarritz, returning Thu, Feb 5, priced at $785 found 2 days ago
Delta
Sat, Jan 24 - Mon, Feb 9
IAD
Washington
BIQ
Biarritz
$798 Roundtrip, found 2 days ago
$798
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 24 from Washington to Biarritz, returning Mon, Feb 9, priced at $798 found 2 days ago
Delta
Mon, Apr 27 - Tue, May 12
IAD
Washington
BIQ
Biarritz
$821 Roundtrip, found 4 days ago
$821
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Apr 27 from Washington to Biarritz, returning Tue, May 12, priced at $821 found 4 days ago
Delta
Mon, Apr 27 - Mon, May 11
IAD
Washington
BIQ
Biarritz
$834 Roundtrip, found 4 days ago
$834
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Apr 27 from Washington to Biarritz, returning Mon, May 11, priced at $834 found 4 days ago
KLM
Wed, Feb 4 - Mon, Feb 9
IAD
Washington
BIQ
Biarritz
$841 Roundtrip, found 3 days ago
$841
Roundtrip
found 3 days ago
Select KLM flight, departing Wed, Feb 4 from Washington to Biarritz, returning Mon, Feb 9, priced at $841 found 3 days ago
KLM
Wed, Feb 4 - Mon, Feb 9
IAD
Washington
BIQ
Biarritz
$853 Roundtrip, found 3 days ago
$853
Roundtrip
found 3 days ago
Select KLM flight, departing Wed, Feb 4 from Washington to Biarritz, returning Mon, Feb 9, priced at $853 found 3 days ago
Swiss International Air Lines
Wed, Apr 1 - Sun, Apr 5
IAD
Washington
BIQ
Biarritz
$896 Roundtrip, found 6 days ago
$896
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Wed, Apr 1 from Washington to Biarritz, returning Sun, Apr 5, priced at $896 found 6 days ago
Air Canada
Wed, Aug 19 - Sat, Sep 12
IAD
Washington
BIQ
Biarritz
$982 Roundtrip, found 4 days ago
$982
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, Aug 19 from Washington to Biarritz, returning Sat, Sep 12, priced at $982 found 4 days ago
Lufthansa
Thu, Aug 20 - Sat, Sep 12
IAD
Washington
BIQ
Biarritz
$1,029 Roundtrip, found 7 hours ago
$1,029
Roundtrip
found 7 hours ago
Select Lufthansa flight, departing Thu, Aug 20 from Washington to Biarritz, returning Sat, Sep 12, priced at $1,029 found 7 hours ago

Alternative airports near Biarritz

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Sebastian EAS. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $783
EAS
San Sebastian
Cheapest
Average driving time to city center24 min
Flights from $783
Flights from Washington (IAD) to Biarritz (BIQ)
Origin airport
Washington Dulles Intl.
Destination airport
Pays Basque
Airlines serving
Lufthansa, Swiss International Air Lines
Roundtrip price
$771
Distance
3817 mi

Washington to Biarritz Flights

The cheapest times to fly from Washington to Biarritz

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Biarritz are during the month of January. You can find some of the cheapest flights from Washington to Biarritz with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Biarritz

Sunday is one of the best days to book for cheap flights from Washington to Biarritz: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Biarritz

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Biarritz in 2025. You can also book with separate airlines for your outbound and return journeys, from $518 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Biarritz flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Biarritz airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ) cost?
Lock in a cheap one-way flight from $518 or cheap return flight from $772 from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ)?
The cheapest month to fly from IAD to BIQ is January, when demand is low. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAD to BIQ flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to BIQ?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ)?
Select a flight from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ) last-minute?
Waiting until just before your trip to book a ticket from IAD to BIQ generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary to maximize your chances of scoring a bargain.
Is it cheaper to book an IAD to BIQ flight and hotel package?
Booking an IAD to BIQ flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our impressive range of accommodations and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Pays Basque Airport (BIQ)?
If you booked your IAD to BIQ flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.