Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Belgium to St. Louis from $414

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belgium to St. Louis departing on 2/27. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
Air Canada Logo
10:00 am - 5:39 pmBRU-STL
14h 39m2 stops
Air Canada Logo
6:42 pm - 7:50 amSTL-BRU
30h 08m2 stops
$630Air Canada
Find Deal
Sun, Nov 23 - Tue, Dec 2
Lufthansa Logo
7:00 am - 1:55 pmBRU-STL
13h 55m1 stop
Lufthansa Logo
1:10 pm - 7:15 amSTL-BRU
11h 05m1 stop
$634Lufthansa
Find Deal
Fri, Nov 21 - Tue, Nov 25
Lufthansa Logo
7:00 am - 1:55 pmBRU-STL
13h 55m1 stop
Lufthansa Logo
12:55 pm - 7:15 amSTL-BRU
11h 20m1 stop
$643Lufthansa
Find Deal
Sun, Nov 23 - Tue, Dec 2
United Airlines Logo
7:00 am - 1:55 pmBRU-STL
13h 55m1 stop
United Airlines Logo
10:00 am - 7:50 amSTL-BRU
14h 50m2 stops
$651United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
10:30 am - 9:13 pmBRU-STL
17h 43m2 stops
United Airlines Logo
3:11 pm - 8:55 amSTL-BRU
10h 44m1 stop
$656United Airlines
Find Deal
Tue, Jan 20 - Thu, Jan 29
American Airlines Logo
11:50 am - 10:50 amBRU-STL
30h 00m2 stops
American Airlines Logo
2:54 pm - 10:50 amSTL-BRU
12h 56m2 stops
$661American Airlines
Find Deal
Wed, Dec 31 - Fri, Jan 9
Delta Logo
11:00 am - 5:29 pmBRU-STL
13h 29m1 stop
Delta Logo
10:45 am - 9:00 amSTL-BRU
15h 15m2 stops
$666Delta
Find Deal
Sat, Dec 6 - Fri, Dec 12
Delta Logo
6:15 am - 4:33 pmBRU-STL
17h 18m2 stops
Delta Logo
4:30 pm - 9:00 amSTL-BRU
33h 30m1 stop
$691Delta
Find Deal
Fri, Nov 21 - Tue, Nov 25
American Airlines Logo
3:00 pm - 3:36 pmBRU-STL
31h 36m2 stops
American Airlines Logo
2:54 pm - 1:50 pmSTL-BRU
15h 56m2 stops
$708American Airlines
Find Deal
Fri, Jan 9 - Wed, Jan 21
Multiple Airlines Logo
10:00 am - 3:29 pmBRU-STL
36h 29m2 stops
Multiple Airlines Logo
6:35 pm - 1:10 pmSTL-BRU
35h 35m2 stops
$826Multiple Airlines
Find Deal
Wed, Dec 24 - Sat, Jan 3

American Airlines flights from Belgium to St. Louis

Our best American Airlines deals on Belgium to St. Louis flight tickets
American Airlines
Dec 31
BRU11:50 amBrussels Bruxelles-National
30h 00m
2 stops
STL10:50 amLambert-St Louis
Jan 9
STL2:54 pmLambert-St Louis
12h 56m
2 stops
BRU10:50 amBrussels Bruxelles-National
$661
Find similar
American Airlines
Jan 9
BRU3:00 pmBrussels Bruxelles-National
31h 36m
2 stops
STL3:36 pmLambert-St Louis
Jan 21
STL2:54 pmLambert-St Louis
15h 56m
2 stops
BRU1:50 pmBrussels Bruxelles-National
$708
Find similar
American Airlines
Dec 24
BRU11:50 amBrussels Bruxelles-National
29h 09m
2 stops
STL9:59 amLambert-St Louis
Jan 5
STL2:50 pmLambert-St Louis
16h 05m
2 stops
BRU1:55 pmBrussels Bruxelles-National
$723
Find similar

United Airlines flights from Belgium to St. Louis

Our best United Airlines deals on Belgium to St. Louis flight tickets
United Airlines
Dec 3
BRU7:00 amBrussels Bruxelles-National
13h 55m
1 stop
STL1:55 pmLambert-St Louis
Dec 7
STL10:00 amLambert-St Louis
14h 50m
2 stops
BRU7:50 amBrussels Bruxelles-National
$651
Find similar
United Airlines
Jan 20
BRU10:30 amBrussels Bruxelles-National
17h 43m
2 stops
STL9:13 pmLambert-St Louis
Jan 29
STL3:11 pmLambert-St Louis
10h 44m
1 stop
BRU8:55 amBrussels Bruxelles-National
$656
Find similar
United Airlines
Dec 28
BRU10:10 amBrussels Bruxelles-National
13h 17m
1 stop
STL4:27 pmLambert-St Louis
Jan 8
STL1:15 pmLambert-St Louis
17h 00m
2 stops
BRU1:15 pmBrussels Bruxelles-National
$665
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 November 3, 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

Sun 11/23

10:00 am-5:39 pm

2 stops14h 39m

Lambert-St Louis

Tue 12/2

6:42 pm-7:50 am

2 stops30h 08m

$630

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 11/21

7:00 am-1:55 pm

1 stop13h 55m

Lambert-St Louis

Tue 11/25

1:10 pm-7:15 am

1 stop11h 05m

$634

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

$643

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

10:00 am-7:50 am

2 stops14h 50m

$651

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Tue 1/20

10:30 am-9:13 pm

2 stops17h 43m

Lambert-St Louis

Thu 1/29

3:11 pm-8:55 am

1 stop10h 44m

$656

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 12/31

11:50 am-10:50 am

2 stops30h 00m

Lambert-St Louis

Fri 1/9

2:54 pm-10:50 am

2 stops12h 56m

$661

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sat 12/6

11:00 am-5:29 pm

1 stop13h 29m

Lambert-St Louis

Fri 12/12

10:45 am-9:00 am

2 stops15h 15m

$666

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 11/21

6:15 am-4:33 pm

2 stops17h 18m

Lambert-St Louis

Tue 11/25

4:30 pm-9:00 am

1 stop33h 30m

$691

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 1/9

3:00 pm-3:36 pm

2 stops31h 36m

Lambert-St Louis

Wed 1/21

2:54 pm-1:50 pm

2 stops15h 56m

$708

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 12/24

10:00 am-3:29 pm

2 stops36h 29m

Lambert-St Louis

Sat 1/3

6:35 pm-1:10 pm

2 stops35h 35m

$826

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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.

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

Direct flights

None
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
8,997 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
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 12/3
Wed 12/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States