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St. Louis

$400+ Cheap flights from Belgium to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — STL
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Cheap flight deals from Belgium to St. Louis

Keep the following information in mind while searching for Belgium to St. Louis flight deals. Data was last updated October 20, 2025.

Round-trip from

$593
(Flysmarter)

One-way from

$400
(Finnair)

Popular in

April

Cheapest in

June

Average price

$689
From Belgium to Lambert-St Louis
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One-way flight from Belgium to Lambert-St Louis
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Highest demand for flights based on searches. 6% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Belgium to St. Louis

Cheapest flights from Belgium to St. Louis
Explore the most affordable flight options available from Belgium to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2025.

This Flysmarter deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/239:35 pmBRU - STL
2 stops26h 30mBritish Airways
Tue 12/23:43 pmSTL - BRU
2 stops14h 52mBritish Airways
Deal found 10/18$593
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:20 amBRU - STL
2 stops19h 45mAmerican Airlines
Tue 12/23:43 pmSTL - BRU
2 stops14h 52mAmerican Airlines
Deal found 10/19$598
This American Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:50 amBRU - STL
2 stops15h 34mAmerican Airlines
Sun 12/711:34 amSTL - BRU
2 stops16h 16mAmerican Airlines
Deal found 10/18$645
This British Airways deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:50 amBRU - STL
2 stops18h 10mBritish Airways
Tue 11/112:52 pmSTL - BRU
2 stops15h 43mBritish Airways
Deal found 10/19$647
This lol.travel deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:00 amBRU - STL
1 stop13h 55mLufthansa
Tue 11/111:10 pmSTL - BRU
1 stop11h 05mLufthansa
Deal found 10/19$651
This Flysmarter deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:00 amBRU - STL
1 stop13h 55mLufthansa
Tue 12/26:42 pmSTL - BRU
2 stops15h 33mLufthansa
Deal found 10/19$657
This Gotogate deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:00 amBRU - STL
1 stop13h 55mMultiple Airlines
Tue 11/114:05 pmSTL - BRU
2 stops14h 10mMultiple Airlines
Deal found 10/19$659
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:00 amBRU - STL
1 stop13h 55mUnited Airlines
Tue 12/212:55 pmSTL - BRU
1 stop11h 20mUnited Airlines
Deal found 10/18$661
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amBRU - STL
1 stop13h 55mUnited Airlines
Sun 12/76:42 pmSTL - BRU
1 stop31h 13mUnited Airlines
Deal found 10/19$665
This Lufthansa deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amBRU - STL
1 stop13h 55mLufthansa
Sun 12/76:42 pmSTL - BRU
1 stop31h 13mLufthansa
Deal found 10/17$667

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belgium to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 20, 2025.
Use the filters below to find and compare flights from Belgium to St. Louis that are best for you.

Fly from

Belgium

Fly to

St. Louis

Route

Depart

Return

Price

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 11/23

9:35 pm-5:05 pm

2 stops26h 30m

Lambert-St Louis

Tue 12/2

3:43 pm-1:35 pm

2 stops14h 52m

$593

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 11/23

11:20 am-12:05 am

2 stops19h 45m

Lambert-St Louis

Tue 12/2

3:43 pm-1:35 pm

2 stops14h 52m

$598

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 12/3

11:50 am-8:24 pm

2 stops15h 34m

Lambert-St Louis

Sun 12/7

11:50 am-10:50 am

2 stops16h 00m

$598

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 11/7

9:50 am-9:00 pm

2 stops18h 10m

Lambert-St Louis

Tue 11/11

2:52 pm-1:35 pm

2 stops15h 43m

$647

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 11/7

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 11/11

1:10 pm-7:15 am

1 stop11h 05m

$651

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 11/23

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 12/2

6:42 pm-5:15 pm

2 stops15h 33m

$657

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 11/7

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 11/11

4:05 pm-1:15 pm

2 stops14h 10m

$659

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 11/23

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 12/2

12:55 pm-7:15 am

1 stop11h 20m

$661

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 12/3

9:00 am-7:13 pm

2 stops17h 13m

Lambert-St Louis

Sun 12/7

6:42 pm-8:55 am

1 stop31h 13m

$665

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 2/27

9:20 pm-6:19 pm

2 stops27h 59m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

Showing 1-10 of 11 results
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Best time to book a flight from Belgium to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Belgium 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.

Cheapflights Insights

Everything you need to know about your flight from Belgium to St. Louis
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated October 20, 2025.
Read through reviews of airlines operating flights from Belgium to St. Louis, such as United Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,461 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Belgium 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 airport do you fly into for flights to St. Louis from Belgium?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Belgium to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How long is the flight from Belgium to St. Louis?

    Airlines like British Airways and American Airlines fly from Belgium to St. Louis in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 6h 45m. Airlines will cover a distance of 4393 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belgium 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Belgium to St. Louis

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Top 2 airlines flying from Belgium to St. Louis

Discover the top 2 airlines that operate flights from Belgium to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$536Average$732FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$652Average$842FlexibilityNo cancel feeOn-time69%

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