What are the cheapest airlines flying from Bilbao to St. Louis round-trip?

Cheapflights users have booked flights from Bilbao to St. Louis round-trip from $816. Other airlines that can offer you cheap pricing are Delta, from $1,004, and KLM, from $1,019.

What is the cheapest month to book a flight from Bilbao to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Bilbao to St. Louis (average of $311). Flying from Bilbao to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest time of day to fly from BIO to STL?

When flying from Bilbao to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Bilbao to St. Louis that include hotel bookings?

Yes. In addition to deals on Bilbao to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Bilbao to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bilbao to St. Louis.

Can I find deals for business class flights from Bilbao to St. Louis?

Yes. Cheapflights offers flight deals from Bilbao to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$816+ Flights from Bilbao to St. Louis

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Cheap flight deals from Bilbao to St. Louis

Round-trip from	$816 (United Airlines)

From Bilbao to Lambert-St Louis

Search Deals

Find flight deals from Bilbao to St. Louis

Cheapest flights from Bilbao to St. Louis
Explore the most affordable flight options available from Bilbao to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Thu 11/66:30 amBIO - STL

2 stops39h 59mUnited Airlines

Mon 11/101:00 pmSTL - BIO

2 stops16h 05mUnited Airlines

Deal found 6/30

$816

Sat 7/196:50 amBIO - STL

2 stops24h 03mDelta

Wed 7/2310:30 amSTL - BIO

2 stops17h 30mDelta

Deal found 7/3

$1,004

Mon 8/186:50 amBIO - STL

2 stops16h 45mKLM

Mon 5/257:05 pmSTL - BIO

2 stops14h 25mKLM

Deal found 7/3

$1,019

Sat 7/197:30 amBIO - STL

3 stops33h 22mMultiple Airlines

Wed 7/231:30 pmSTL - BIO

2 stops16h 55mMultiple Airlines

Deal found 7/3

$1,489

Best flights from Bilbao to St. Louis
Discover carefully curated flight deals from Bilbao to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Thu 11/66:30 amBIO - STL

2 stops39h 59mUnited Airlines

Mon 11/101:00 pmSTL - BIO

2 stops16h 05mUnited Airlines

Deal found 6/30

$816

Sat 7/196:50 amBIO - STL

2 stops24h 03mDelta

Wed 7/2310:30 amSTL - BIO

2 stops17h 30mDelta

Deal found 7/3

$1,004

Mon 8/186:50 amBIO - STL

2 stops16h 45mKLM

Mon 5/257:05 pmSTL - BIO

2 stops14h 25mKLM

Deal found 7/3

$1,019

Sat 7/197:30 amBIO - STL

3 stops33h 22mMultiple Airlines

Wed 7/231:30 pmSTL - BIO

2 stops16h 55mMultiple Airlines

Deal found 7/3

$1,489

Last-minute flights from Bilbao to St. Louis
Discover last-minute flight deals from Bilbao to St. Louis. Data last updated July 3, 2025 and is based on user searches.

Sat 7/196:50 amBIO - STL

2 stops24h 03mDelta

Wed 7/2310:30 amSTL - BIO

2 stops17h 30mDelta

Deal found 7/3

$1,004

Sat 7/197:30 amBIO - STL

3 stops33h 22mMultiple Airlines

Wed 7/231:30 pmSTL - BIO

2 stops16h 55mMultiple Airlines

Deal found 7/3

$1,489

Mon 8/186:50 amBIO - STL

2 stops16h 45mKLM

Mon 5/257:05 pmSTL - BIO

2 stops14h 25mKLM

Deal found 7/3

$1,019

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bilbao to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BilbaoSt. Louis

BIO - STL

BIOSTL

Bilbao

Thu 11/6

6:30 am-3:29 pm

2 stops39h 59m

Lambert-St Louis

Mon 11/10

1:00 pm-12:05 pm

2 stops16h 05m

$816

BilbaoSt. Louis

BIO - STL

BIOSTL

Bilbao

Sat 7/19

6:50 am-11:53 pm

2 stops24h 03m

Lambert-St Louis

Wed 7/23

10:30 am-11:00 am

2 stops17h 30m

$1,004

BilbaoSt. Louis

BIO - STL

BIOSTL

Bilbao

Mon 8/18

6:50 am-4:35 pm

2 stops16h 45m

Lambert-St Louis

Mon 5/25

7:05 pm-4:30 pm

2 stops14h 25m

$1,019

BilbaoSt. Louis

BIO - STL

BIOSTL

Bilbao

Sat 7/19

7:30 am-9:52 am

3 stops33h 22m

Lambert-St Louis

Wed 7/23

1:30 pm-1:25 pm

2 stops16h 55m

$1,489

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Bilbao to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Bilbao with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta, KLM, and United Airlines from Bilbao to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,982 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,982 reviews

Delta

8.0

Very good

7,982 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,367 reviews

Delta

8.0

Very good

7,982 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,861 reviews

Delta

8.0

Very good

7,982 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Bilbao to St. Louis round-trip?
Cheapflights users have booked flights from Bilbao to St. Louis round-trip from $816. Other airlines that can offer you cheap pricing are Delta, from $1,004, and KLM, from $1,019.
Can I find deals for flights from Bilbao to St. Louis that include hotel bookings?
Yes. In addition to deals on Bilbao to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Bilbao to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bilbao to St. Louis.
Can I find deals for business class flights from Bilbao to St. Louis?
Yes. Cheapflights offers flight deals from Bilbao to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Bilbao to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Bilbao to St. Louis (average of $311). Flying from Bilbao to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$816+ Cheap flights from Bilbao (BIO) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Bilbao to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Bilbao to St. Louis

Round-trip from

Find flight deals from Bilbao to St. Louis

Cheapest flights from Bilbao to St. LouisExplore the most affordable flight options available from Bilbao to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Bilbao to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bilbao to St. Louis that are best for you.

Best time to book a flight from Bilbao to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Bilbao with our price prediction graph.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta, KLM, and United Airlines from Bilbao to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Bilbao to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Bilbao to St. Louis round-trip?

Can I find deals for flights from Bilbao to St. Louis that include hotel bookings?

How can I find direct flights from Bilbao to St. Louis?

Can I find deals for business class flights from Bilbao to St. Louis?

What is the cheapest month to book a flight from Bilbao to St. Louis?

Traveling to a place near Bilbao?

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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Bilbao to St. Louis

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100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Bilbao to St. Louis
Explore the most affordable flight options available from Bilbao to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.