$559 Cheap Flights from St. Louis (STL) to Biarritz (BIQ)

View $559 flight on Mon, Mar 16, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Biarritz (BIQ-Pays Basque)

Cheap Flights from St. Louis to Biarritz (STL-BIQ)

Prices were available within the past 7 days and start at $559 for one-way flights and $1,435 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,435 Roundtrip, found 3 hours ago
$1,435
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,435 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,438 Roundtrip, found 3 hours ago
$1,438
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,438 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,442 Roundtrip, found 3 hours ago
$1,442
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,442 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,445 Roundtrip, found 3 hours ago
$1,445
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,445 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,445 Roundtrip, found 3 hours ago
$1,445
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,445 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,447 Roundtrip, found 3 hours ago
$1,447
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,447 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,448 Roundtrip, found 3 hours ago
$1,448
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,448 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,451 Roundtrip, found 3 hours ago
$1,451
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,451 found 3 hours ago
Air Canada
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,451 Roundtrip, found 3 hours ago
$1,451
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,451 found 3 hours ago
Lufthansa
Fri, Jul 31 - Sat, Aug 22
STL
St. Louis
BIQ
Biarritz
$1,628 Roundtrip, found 3 hours ago
$1,628
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Jul 31 from St. Louis to Biarritz, returning Sat, Aug 22, priced at $1,628 found 3 hours ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ) cost?
Snag a cheap one-way flight from $559 or cheap return flight from $1,435 from Lambert-St. Louis Intl. Airport (STL) 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 Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ)?
The cheapest month to fly from STL to BIQ is July, when there's less demand. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from STL to BIQ. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ)?
There aren't any daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from STL to BIQ?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ) last-minute?
Last-minute bookings from STL to BIQ are typically more expensive. To secure the best rates, start looking for flights as soon as possible. That said, if your travel plans are flexible, it's possible to score a cheap fare right before your journey.
Is it cheaper to book a STL to BIQ flight and hotel package?
Opting for a STL to BIQ flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our impressive range of hotels and then add car rentals, flights 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 Lambert-St. Louis Intl. Airport (STL) to Pays Basque Airport (BIQ)?
In most cases, you can cancel or modify your STL to BIQ flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Pays Basque
Airlines serving
Lufthansa
Roundtrip price
$1,435
Distance
4405 mi

Book with confidence

St. Louis to Biarritz Flights

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

 

The best time to book a flight from St. Louis to Biarritz

Sunday is one of the best days to book for cheap flights from St. Louis 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 St. Louis 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 St. Louis to Biarritz in 2025. You can also book with separate airlines for your outbound and return journeys, from $559 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 St. Louis 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 St. Louis 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.

 

St. Louis to Biarritz Flights

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*Available to One Key members.