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St. Louis

$516+ Cheap flights from Belgium 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — STL
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$516
(American Airlines)

Popular in

November

Cheapest in

May

Average price

$744
From Belgium to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($314 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($102 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 August 18, 2025.

This American Airlines deal was found by Cheapflights users on 8/15. 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 stops16h 57mAmerican Airlines
Sun 12/711:14 amSTL - BRU
2 stops19h 36mAmerican Airlines
Deal found 8/15$516
This British Airways deal was found by Cheapflights users on 8/16. 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.
Wed 10/2210:55 amBRU - STL
2 stops19h 10mBritish Airways
Sun 10/2612:23 pmSTL - BRU
2 stops16h 27mBritish Airways
Deal found 8/16$519
This British Airways deal was found by Cheapflights users on 8/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:35 pmBRU - STL
2 stops27h 48mBritish Airways
Fri 10/172:15 pmSTL - BRU
2 stops20h 05mBritish Airways
Deal found 8/17$520
This Flighttix deal was found by Cheapflights users on 8/17. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:00 amBRU - STL
1 stop13h 30mUnited Airlines
Fri 10/178:25 amSTL - BRU
2 stops15h 35mUnited Airlines
Deal found 8/17$629
This Gotogate deal was found by Cheapflights users on 8/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:00 amBRU - STL
1 stop13h 30mLufthansa
Fri 10/173:30 pmSTL - BRU
1 stop15h 10mLufthansa
Deal found 8/17$632
This Lufthansa deal was found by Cheapflights users on 8/15. 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 12/71:00 pmSTL - BRU
1 stop12h 55mLufthansa
Deal found 8/15$637
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:30 amBRU - STL
2 stops16h 18mUnited Airlines
Sun 12/73:13 pmSTL - BRU
1 stop10h 42mUnited Airlines
Deal found 8/17$644
This Lufthansa deal was found by Cheapflights users on 8/16. 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 10/2210:15 amBRU - STL
1 stop18h 22mLufthansa
Sun 10/263:14 pmSTL - BRU
1 stop10h 41mLufthansa
Deal found 8/16$651
This British Airways deal was found by Cheapflights users on 8/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/189:15 pmBRU - STL
2 stops28h 15mBritish Airways
Mon 8/2512:20 pmSTL - BRU
2 stops14h 45mBritish Airways
Deal found 8/17$1,025

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 August 18, 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

Wed 12/3

11:50 am-9:47 pm

2 stops16h 57m

Lambert-St Louis

Sun 12/7

11:14 am-1:50 pm

2 stops19h 36m

$516

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 10/22

10:55 am-11:05 pm

2 stops19h 10m

Lambert-St Louis

Sun 10/26

12:23 pm-10:50 am

2 stops16h 27m

$519

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 10/10

7:35 pm-4:23 pm

2 stops27h 48m

Lambert-St Louis

Fri 10/17

2:15 pm-5:20 pm

2 stops20h 05m

$520

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 10/10

7:00 am-1:30 pm

1 stop13h 30m

Lambert-St Louis

Fri 10/17

8:25 am-7:00 am

2 stops15h 35m

$629

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 10/10

7:00 am-1:30 pm

1 stop13h 30m

Lambert-St Louis

Fri 10/17

3:30 pm-1:40 pm

1 stop15h 10m

$632

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 12/3

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Sun 12/7

1:00 pm-8:55 am

1 stop12h 55m

$637

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 10/22

8:30 am-3:44 pm

2 stops14h 14m

Lambert-St Louis

Sun 10/26

3:14 pm-7:55 am

1 stop10h 41m

$644

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

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

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

Currently, August is the cheapest month in which you can book a flight from Belgium to St. Louis (average of $311). Flying from Belgium 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.

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

Find hourly flight availability from Belgium to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belgium to St. Louis as you normally would.

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 August 18, 2025.
Read through reviews of airlines operating flights from Belgium to St. Louis, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,277 reviews

Crew

7.6

Comfort

6.7

Food

6.3

Entertainment

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
7,277 reviews
British Airways
6.7
Okay
7,277 reviews

Crew

7.6

Comfort

6.7

Food

6.3

Entertainment

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

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.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Belgium to St. Louis (average of $311). Flying from Belgium 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.

See more FAQs

Traveling to a place near St. Louis?

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

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Top airline flying from Belgium to St. Louis

Discover the top airline 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$536Average$732FlexibilityNo cancel feeOn-time70%

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