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Cheap flights from Belgium to St. Louis from $487

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 9/27. 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

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Find the cheapest flights from Belgium to St. Louis

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

American Airlines Logo
10:15 am - 9:47 pmBRU-STL
18h 32m2 stops
American Airlines Logo
9:25 am - 11:10 amSTL-BRU
18h 45m2 stops
$509American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
10:15 am - 9:47 pmBRU-STL
18h 32m2 stops
American Airlines Logo
9:25 am - 11:10 amSTL-BRU
18h 45m2 stops
$510American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
British Airways Logo
10:50 am - 8:47 pmBRU-STL
16h 57m2 stops
British Airways Logo
3:59 pm - 6:50 pmSTL-BRU
19h 51m2 stops
$522British Airways
Find Deal
Thu, Aug 28 - Thu, Sep 4
British Airways Logo
7:35 pm - 3:49 pmBRU-STL
27h 14m2 stops
British Airways Logo
4:19 pm - 2:25 pmSTL-BRU
15h 06m2 stops
$578British Airways
Find Deal
Fri, Aug 22 - Tue, Aug 26
Air Canada Logo
10:00 am - 8:00 pmBRU-STL
17h 00m1 stop
Air Canada Logo
9:15 am - 8:00 amSTL-BRU
15h 45m2 stops
$604Air Canada
Find Deal
Fri, Aug 22 - Tue, Aug 26
Air Canada Logo
10:00 am - 8:00 pmBRU-STL
17h 00m1 stop
Air Canada Logo
4:00 pm - 7:50 amSTL-BRU
32h 50m1 stop
$607Air Canada
Find Deal
Fri, Aug 22 - Tue, Aug 26
United Airlines Logo
9:30 am - 5:52 pmBRU-STL
15h 22m2 stops
United Airlines Logo
11:27 am - 7:45 amSTL-BRU
13h 18m1 stop
$634United Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 4
United Airlines Logo
10:00 am - 8:00 pmBRU-STL
17h 00m1 stop
United Airlines Logo
1:30 pm - 8:05 amSTL-BRU
11h 35m1 stop
$635United Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 4
Lufthansa Logo
7:00 am - 5:03 pmBRU-STL
17h 03m2 stops
Lufthansa Logo
11:50 am - 8:05 amSTL-BRU
13h 15m1 stop
$636Lufthansa
Find Deal
Thu, Dec 4 - Mon, Dec 8
Lufthansa Logo
10:10 am - 5:03 pmBRU-STL
13h 53m1 stop
Lufthansa Logo
11:50 am - 8:05 amSTL-BRU
13h 15m1 stop
$640Lufthansa
Find Deal
Thu, Dec 4 - Mon, Dec 8

American Airlines flights from Belgium to St. Louis

Our best American Airlines deals on Belgium to St. Louis flight tickets
American Airlines
Dec 4
BRU10:15 amBrussels Bruxelles-National
18h 32m
2 stops
STL9:47 pmLambert-St Louis
Dec 8
STL9:25 amLambert-St Louis
18h 45m
2 stops
BRU11:10 amBrussels Bruxelles-National
$509
Find similar
American Airlines
Dec 4
BRU10:15 amBrussels Bruxelles-National
18h 32m
2 stops
STL9:47 pmLambert-St Louis
Dec 8
STL9:25 amLambert-St Louis
18h 45m
2 stops
BRU11:10 amBrussels Bruxelles-National
$510
Find similar
American Airlines
Dec 4
BRU10:15 amBrussels Bruxelles-National
31h 51m
2 stops
STL11:06 amLambert-St Louis
Dec 8
STL11:57 amLambert-St Louis
16h 13m
2 stops
BRU11:10 amBrussels Bruxelles-National
$514
Find similar

Lufthansa flights from Belgium to St. Louis

Our best Lufthansa deals on Belgium to St. Louis flight tickets
Lufthansa
Dec 4
BRU7:00 amBrussels Bruxelles-National
17h 03m
2 stops
STL5:03 pmLambert-St Louis
Dec 8
STL11:50 amLambert-St Louis
13h 15m
1 stop
BRU8:05 amBrussels Bruxelles-National
$636
Find similar
Lufthansa
Dec 4
BRU10:10 amBrussels Bruxelles-National
13h 53m
1 stop
STL5:03 pmLambert-St Louis
Dec 8
STL11:50 amLambert-St Louis
13h 15m
1 stop
BRU8:05 amBrussels Bruxelles-National
$640
Find similar
Lufthansa
Dec 4
BRU7:00 amBrussels Bruxelles-National
17h 03m
2 stops
STL5:03 pmLambert-St Louis
Dec 8
STL11:50 amLambert-St Louis
13h 15m
1 stop
BRU8:05 amBrussels Bruxelles-National
$641
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 July 31, 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 12/4

10:15 am-9:47 pm

2 stops18h 32m

Lambert-St Louis

Mon 12/8

9:25 am-11:10 am

2 stops18h 45m

$509

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 12/4

10:15 am-9:47 pm

2 stops18h 32m

Lambert-St Louis

Mon 12/8

9:25 am-11:10 am

2 stops18h 45m

$510

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 8/28

10:50 am-8:47 pm

2 stops16h 57m

Lambert-St Louis

Thu 9/4

3:59 pm-6:50 pm

2 stops19h 51m

$522

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 8/22

7:35 pm-3:49 pm

2 stops27h 14m

Lambert-St Louis

Tue 8/26

4:19 pm-2:25 pm

2 stops15h 06m

$578

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 8/22

10:00 am-8:00 pm

1 stop17h 00m

Lambert-St Louis

Tue 8/26

9:15 am-8:00 am

2 stops15h 45m

$604

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 8/22

10:00 am-8:00 pm

1 stop17h 00m

Lambert-St Louis

Tue 8/26

4:00 pm-7:50 am

1 stop32h 50m

$607

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 8/28

9:30 am-5:52 pm

2 stops15h 22m

Lambert-St Louis

Thu 9/4

11:27 am-7:45 am

1 stop13h 18m

$634

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 8/28

10:00 am-8:00 pm

1 stop17h 00m

Lambert-St Louis

Thu 9/4

1:30 pm-8:05 am

1 stop11h 35m

$635

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 12/4

7:00 am-5:03 pm

2 stops17h 03m

Lambert-St Louis

Mon 12/8

11:50 am-8:05 am

1 stop13h 15m

$636

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 12/4

10:10 am-5:03 pm

1 stop13h 53m

Lambert-St Louis

Mon 12/8

11:50 am-8:05 am

1 stop13h 15m

$640

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 month to fly to St. Louis?

In general, May is the cheapest month to fly from Belgium to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $435. The month of February is another great option to travel to St. Louis, with average flight prices from Belgium averaging around $545.

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

Best Price Found

$487

Fastest flight time

12h 29m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Belgium in the past 72 hours is $487. The best round-trip flight deal from Belgium to St. Louis found on momondo in the last 72 hours is $509.
The fastest flight from Belgium to St. Louis takes 12h 29m
There are no direct flights from Belgium to St. Louis. Popular non-direct route for this connection is Brussels Bruxelles-National Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
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
British AirwaysPriceFrom $536Free CancellationRating
6.6
7,222 reviews
Search British Airways 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
Florissant
Fenton
Collinsville
O'Fallon
Alton
St. Peters
Farmington
Wentzville
Festus
Glencoe
Eureka
Edwardsville
Clayton
Shrewsbury
Grafton

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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