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Cheap flights from Belgium to St. Louis from $608

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Belgium to St. Louis departing on 3/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Belgium to St. Louis

Recent round-trip flight deals from Belgium to St. Louis

Enter your travel dates to find the best prices.
American Airlines Logo
10:15 am - 11:28 pm
BRU
-
STL
20h 13m2 stops
American Airlines Logo
11:47 am - 11:10 am
STL
-
BRU
17h 23m2 stops
$608American Airlines
Thu, Mar 5 - Mon, Mar 9
American Airlines Logo
11:45 am - 11:03 am
BRU
-
STL
30h 18m2 stops
American Airlines Logo
12:11 pm - 10:50 am
STL
-
BRU
15h 39m2 stops
$609American Airlines
Fri, Jan 23 - Tue, Jan 27
British Airways Logo
9:50 am - 10:44 pm
BRU
-
STL
19h 54m2 stops
British Airways Logo
12:11 pm - 10:50 am
STL
-
BRU
15h 39m2 stops
$610British Airways
Fri, Jan 23 - Tue, Jan 27
British Airways Logo
9:20 pm - 4:14 pm
BRU
-
STL
25h 54m2 stops
British Airways Logo
2:54 pm - 10:50 am
STL
-
BRU
12h 56m2 stops
$612British Airways
Fri, Jan 23 - Tue, Jan 27
Lufthansa Logo
7:00 am - 1:55 pm
BRU
-
STL
13h 55m1 stop
Lufthansa Logo
12:44 pm - 7:15 am
STL
-
BRU
11h 31m1 stop
$645Lufthansa
Fri, Jan 23 - Tue, Jan 27
Lufthansa Logo
7:00 am - 1:55 pm
BRU
-
STL
13h 55m1 stop
Lufthansa Logo
12:44 pm - 10:20 am
STL
-
BRU
14h 36m2 stops
$650Lufthansa
Fri, Jan 23 - Tue, Jan 27
Lufthansa Logo
7:00 am - 1:55 pm
BRU
-
STL
13h 55m1 stop
Lufthansa Logo
11:22 am - 10:10 am
STL
-
BRU
15h 48m2 stops
$658Lufthansa
Fri, Jan 30 - Tue, Feb 3
Brussels Airlines Logo
11:55 am - 7:27 pm
BRU
-
STL
14h 32m1 stop
Brussels Airlines Logo
12:44 pm - 7:15 am
STL
-
BRU
11h 31m1 stop
$665Brussels Airlines
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
6:45 am - 5:43 pm
BRU
-
STL
17h 58m2 stops
Multiple Airlines Logo
12:44 pm - 7:15 am
STL
-
BRU
11h 31m1 stop
$673Multiple Airlines
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
7:00 am - 1:55 pm
BRU
-
STL
13h 55m1 stop
United Airlines Logo
9:57 am - 8:05 am
STL
-
BRU
15h 08m2 stops
$685United Airlines
Fri, Jan 23 - Tue, Jan 27

American Airlines flights from Belgium to St. Louis

Our best American Airlines deals on Belgium to St. Louis flight tickets
American Airlines
Mar 5
BRU10:15 amBrussels Bruxelles-National
20h 13m
2 stops
STL11:28 pmLambert-St Louis
Mar 9
STL11:47 amLambert-St Louis
17h 23m
2 stops
BRU11:10 amBrussels Bruxelles-National
$608
Find similar
American Airlines
Jan 23
BRU11:45 amBrussels Bruxelles-National
30h 18m
2 stops
STL11:03 amLambert-St Louis
Jan 27
STL12:11 pmLambert-St Louis
15h 39m
2 stops
BRU10:50 amBrussels Bruxelles-National
$609
Find similar

British Airways flights from Belgium to St. Louis

Our best British Airways deals on Belgium to St. Louis flight tickets
British Airways
Jan 23
BRU9:50 amBrussels Bruxelles-National
19h 54m
2 stops
STL10:44 pmLambert-St Louis
Jan 27
STL12:11 pmLambert-St Louis
15h 39m
2 stops
BRU10:50 amBrussels Bruxelles-National
$610
Find similar
British Airways
Jan 23
BRU9:20 pmBrussels Bruxelles-National
25h 54m
2 stops
STL4:14 pmLambert-St Louis
Jan 27
STL2:54 pmLambert-St Louis
12h 56m
2 stops
BRU10:50 amBrussels Bruxelles-National
$612
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 21, 2025.
Use the filters below to find and compare flights from Belgium to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 3/5

10:15 am-11:28 pm

2 stops20h 13m

Lambert-St Louis

Mon 3/9

11:47 am-11:10 am

2 stops17h 23m

$608

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

11:45 am-11:03 am

2 stops30h 18m

Lambert-St Louis

Tue 1/27

12:11 pm-10:50 am

2 stops15h 39m

$609

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

9:50 am-10:44 pm

2 stops19h 54m

Lambert-St Louis

Tue 1/27

12:11 pm-10:50 am

2 stops15h 39m

$610

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

9:20 pm-4:14 pm

2 stops25h 54m

Lambert-St Louis

Tue 1/27

2:54 pm-10:50 am

2 stops12h 56m

$612

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 1/27

12:44 pm-7:15 am

1 stop11h 31m

$645

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 1/27

12:44 pm-10:20 am

2 stops14h 36m

$650

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/30

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 2/3

11:22 am-10:10 am

2 stops15h 48m

$658

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

11:55 am-7:27 pm

1 stop14h 32m

Lambert-St Louis

Tue 1/27

12:44 pm-7:15 am

1 stop11h 31m

$665

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

6:45 am-5:43 pm

2 stops17h 58m

Lambert-St Louis

Tue 1/27

12:44 pm-7:15 am

1 stop11h 31m

$673

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/23

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 1/27

9:57 am-8:05 am

2 stops15h 08m

$685

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Belgium to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $710. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $738. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Can stopping save me money on Belgium to St. Louis flights?

You could potentially save up to 21% on your flight if you consider stops on a Belgium to St. Louis flight.

Cheap Belgium to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belgium to St. Louis

Fastest flight time

26h 54m

Direct flights

None
The fastest flight from Belgium to St. Louis takes 26h 54m
There are no direct flights from Belgium to St. Louis. There are no popular flight routes from Belgium to St. Louis.
Search flight deals

  • When did momondo last update prices for flights from Belgium to Lambert-St Louis Airport?

    Prices for flights from Belgium to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Belgium to Lambert-St Louis Airport?

  • How old do you have to be to fly from Belgium to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belgium to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Belgium to St. Louis

Compare and see reviews for airlines that fly from Belgium to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $652Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
St. Peters
Wentzville
Collinsville
Alton
Farmington
Clayton
Festus
Glencoe
Eureka
Edwardsville
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Belgium to St. Louis?

It is quick and easy to find Belgium to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Belgium to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Belgium with this policy.

How can momondo help me find flights from Belgium to St. Louis?

momondo helps you find the best flight between Belgium and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Belgium to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Belgium are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

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