$596 Cheap Flights from Seattle (SEA) to Biarritz (BIQ)

View $596 flight on Sun, Apr 19, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Biarritz (BIQ-Pays Basque)

Cheap Flights from Seattle to Biarritz (SEA-BIQ)

Prices were available within the past 7 days and start at $596 for one-way flights and $1,134 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,134 Roundtrip, found 9 hours ago
$1,134
Roundtrip
found 9 hours ago
Select KLM flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,134 found 9 hours ago
KLM
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,136 Roundtrip, found 9 hours ago
$1,136
Roundtrip
found 9 hours ago
Select KLM flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,136 found 9 hours ago
KLM
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,147 Roundtrip, found 9 hours ago
$1,147
Roundtrip
found 9 hours ago
Select KLM flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,147 found 9 hours ago
KLM
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,148 Roundtrip, found 9 hours ago
$1,148
Roundtrip
found 9 hours ago
Select KLM flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,148 found 9 hours ago
Air Canada
Fri, Sep 12 - Fri, Sep 26
SEA
Seattle
BIQ
Biarritz
$1,295 Roundtrip, found 3 hours ago
$1,295
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Sep 12 from Seattle to Biarritz, returning Fri, Sep 26, priced at $1,295 found 3 hours ago
Air Canada
Fri, Sep 12 - Fri, Sep 26
SEA
Seattle
BIQ
Biarritz
$1,299 Roundtrip, found 3 hours ago
$1,299
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Sep 12 from Seattle to Biarritz, returning Fri, Sep 26, priced at $1,299 found 3 hours ago
KLM
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,334 Roundtrip, found 9 hours ago
$1,334
Roundtrip
found 9 hours ago
Select KLM flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,334 found 9 hours ago
Lufthansa
Fri, Sep 12 - Fri, Sep 26
SEA
Seattle
BIQ
Biarritz
$1,383 Roundtrip, found 3 hours ago
$1,383
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Sep 12 from Seattle to Biarritz, returning Fri, Sep 26, priced at $1,383 found 3 hours ago
Air France
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$1,425 Roundtrip, found 9 hours ago
$1,425
Roundtrip
found 9 hours ago
Select Air France flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $1,425 found 9 hours ago
Delta
Sun, Apr 19 - Thu, Apr 30
SEA
Seattle
BIQ
Biarritz
$2,431 Roundtrip, found 9 hours ago
$2,431
Roundtrip
found 9 hours ago
Select Delta flight, departing Sun, Apr 19 from Seattle to Biarritz, returning Thu, Apr 30, priced at $2,431 found 9 hours ago
Flights from Seattle (SEA) to Biarritz (BIQ)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Pays Basque
Roundtrip price
$1,134
Distance
5194 mi

Seattle to Biarritz Flights

The cheapest times to fly from Seattle 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 Seattle to Biarritz are during the month of April. You can find some of the cheapest flights from Seattle to Biarritz with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Biarritz

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Biarritz in 2025. You can also book with separate airlines for your outbound and return journeys, from $596 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 Seattle 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 Seattle 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 Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ) cost?
Get a cheap one-way flight from $596 or cheap return flight from $1,134 from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ)?
The cheapest month to fly from SEA to BIQ is April, when there's less demand. Off-peak months are generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) 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 see which carrier offers the cheapest SEA to BIQ flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ)?
There aren't any daily nonstop flights available from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from SEA to BIQ?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ)?
To touch down at Pays Basque Airport (BIQ) on time, opt for a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ) last-minute?
Waiting until just before your trip to book a ticket from SEA to BIQ often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible to boost your chances of snagging a bargain.
Is it cheaper to book a SEA to BIQ flight and hotel package?
Securing a SEA to BIQ flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Pays Basque Airport (BIQ)?
It's usually possible to reschedule or cancel your SEA to BIQ flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.