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St. Louis

$432+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — STL
feb. 24 — mar. 31
mar. 2/24
mar. 3/3
1 adult, Economy
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Cheap 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 enero 25, 2026.

This British Airways deal was found by Cheapflights users on 1/22. 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.
jue. 9/249:10 pm
BRU
-
STL
1 stop29h 20m
British Airways
lun. 9/284:14 pm
STL
-
BRU
2 stops20h 21m
British Airways
Deal found 1/22$611
This Delta deal was found by Cheapflights users on 1/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/1210:00 am
BRU
-
STL
1 stop29h 05m
Delta
vie. 3/206:00 am
STL
-
BRU
1 stop20h 00m
Delta
Deal found 1/23$614
This British Airways deal was found by Cheapflights users on 1/24. 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.
mié. 3/410:25 am
BRU
-
STL
2 stops17h 47m
British Airways
mié. 3/186:57 pm
STL
-
BRU
2 stops15h 23m
British Airways
Deal found 1/24$617
This Delta deal was found by Cheapflights users on 1/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/510:45 am
BRU
-
STL
2 stops16h 56m
Delta
mar. 3/1712:28 pm
STL
-
BRU
2 stops19h 47m
Delta
Deal found 1/24$620
This American Airlines deal was found by Cheapflights users on 1/24. 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.
jue. 3/510:15 am
BRU
-
STL
2 stops17h 57m
American Airlines
mar. 3/1711:59 am
STL
-
BRU
2 stops16h 51m
American Airlines
Deal found 1/24$623
This KAYAK deal was found by Cheapflights users on 1/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/69:50 am
BRU
-
STL
2 stops16h 40m
British Airways
mié. 3/186:57 pm
STL
-
BRU
2 stops15h 23m
British Airways
Deal found 1/24$635
This Finnair deal was found by Cheapflights users on 1/24. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/46:30 am
BRU
-
STL
2 stops24h 18m
Multiple Airlines
lun. 5/187:05 am
STL
-
BRU
2 stops32h 30m
Multiple Airlines
Deal found 1/24$636
This British Airways deal was found by Cheapflights users on 1/24. 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.
mié. 3/1811:50 am
BRU
-
STL
2 stops17h 58m
British Airways
mié. 4/14:05 pm
STL
-
BRU
2 stops16h 00m
British Airways
Deal found 1/24$640

Find 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 enero 25, 2026.

Round-trip from

$614
(Delta)

One-way from

$432
(American Airlines)

Popular in

July

Cheapest in

May

Average price

$766
From Belgium to Lambert-St Louis
Search Deals
One-way flight from Belgium to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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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 enero 25, 2026.
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

jue. 3/12

10:00 am-9:05 am

1 stop29h 05m

Lambert-St Louis

vie. 3/20

6:00 am-8:00 am

1 stop20h 00m

$614

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

jue. 3/12

10:15 am-9:11 pm

2 stops16h 56m

Lambert-St Louis

vie. 3/20

11:59 am-10:50 am

2 stops16h 51m

$614

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

lun. 3/9

11:50 am-11:48 pm

2 stops17h 58m

Lambert-St Louis

mié. 3/18

4:13 pm-1:50 pm

2 stops15h 37m

$617

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

jue. 3/5

10:15 am-9:12 pm

2 stops17h 57m

Lambert-St Louis

mar. 3/17

2:37 pm-10:50 am

2 stops14h 13m

$617

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

lun. 5/4

6:30 am-11:48 pm

2 stops24h 18m

Lambert-St Louis

lun. 5/18

7:05 am-10:35 pm

2 stops32h 30m

$636

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

mié. 3/18

11:50 am-11:48 pm

2 stops17h 58m

Lambert-St Louis

mié. 4/1

4:05 pm-3:05 pm

2 stops16h 00m

$640

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

lun. 3/23

5:30 pm-7:29 pm

2 stops31h 59m

$432

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

vie. 3/20

9:50 am-9:21 pm

2 stops17h 31m

$432

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

dom. 3/22

5:30 pm-9:21 pm

2 stops33h 51m

$432

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

mar. 3/24

12:00 pm-11:11 am

2 stops29h 11m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 15 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 enero 25, 2026.
Read through reviews of airlines operating flights from Belgium to St. Louis, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,198 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,198 reviews
United Airlines
7.4
Good
9,198 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 Delta and British Airways fly from Belgium to St. Louis in about 17h 47m. The time it takes to get you to your destination can typically vary by up to 11h 18m. 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belgium to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 enero 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$652Average$848FlexibilityNo cancel feeOn-time69%

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