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Cheap flights from Belgium to St. Louis from $605

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 8/3. 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
1 adult, Economy, 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.
Air Canada Logo
6:20 am - 8:25 pm
BRU
-
STL
21h 05m
2 stops
Air Canada Logo
1:20 pm - 8:55 am
STL
-
BRU
36h 35m
2 stops
$765Air Canada
Mon, Jun 22 - Sun, Jun 28
Air Canada Logo
6:20 am - 8:25 pm
BRU
-
STL
21h 05m
2 stops
Air Canada Logo
1:20 pm - 7:10 am
STL
-
BRU
10h 50m
1 stop
$769Air Canada
Mon, Jun 22 - Sun, Jun 28
Air Canada Logo
9:40 am - 8:25 pm
BRU
-
STL
17h 45m
1 stop
Air Canada Logo
2:15 pm - 7:50 am
STL
-
BRU
10h 35m
1 stop
$773Air Canada
Mon, Jun 22 - Sun, Jun 28
Lufthansa Logo
11:10 am - 11:44 pm
BRU
-
STL
19h 34m
1 stop
Lufthansa Logo
3:30 pm - 1:40 pm
STL
-
BRU
15h 10m
1 stop
$785Lufthansa
Mon, Jul 13 - Mon, Jul 20
United Airlines Logo
6:20 am - 1:25 pm
BRU
-
STL
14h 05m
1 stop
United Airlines Logo
1:13 pm - 9:00 am
STL
-
BRU
12h 47m
1 stop
$788United Airlines
Mon, Jun 22 - Sun, Jun 28
Lufthansa Logo
11:10 am - 11:44 pm
BRU
-
STL
19h 34m
1 stop
Lufthansa Logo
7:05 pm - 8:40 pm
STL
-
BRU
18h 35m
2 stops
$789Lufthansa
Mon, Jul 13 - Mon, Jul 20
Lufthansa Logo
10:15 am - 3:46 pm
BRU
-
STL
12h 31m
1 stop
Lufthansa Logo
8:43 am - 7:15 am
STL
-
BRU
15h 32m
1 stop
$792Lufthansa
Sun, Jul 5 - Wed, Jul 15
United Airlines Logo
12:00 pm - 11:44 pm
BRU
-
STL
18h 44m
2 stops
United Airlines Logo
3:22 pm - 1:15 pm
STL
-
BRU
14h 53m
2 stops
$798United Airlines
Mon, Jul 13 - Mon, Jul 20
Multiple Airlines Logo
9:55 am - 6:42 pm
BRU
-
STL
39h 47m
2 stops
Multiple Airlines Logo
8:43 am - 7:15 am
STL
-
BRU
15h 32m
1 stop
$822Multiple Airlines
Sun, Jul 5 - Wed, Jul 15
Multiple Airlines Logo
9:55 am - 8:07 pm
BRU
-
STL
17h 12m
2 stops
Multiple Airlines Logo
10:20 am - 7:15 am
STL
-
BRU
13h 55m
2 stops
$848Multiple Airlines
Sun, Jul 5 - Wed, Jul 15

Air Canada flights from Belgium to St. Louis

Our best Air Canada deals on Belgium to St. Louis flight tickets
Air Canada
Jun 22
BRU6:20 amBrussels Bruxelles-National
21h 05m
2 stops
STL8:25 pmLambert-St Louis
Jun 28
STL1:20 pmLambert-St Louis
36h 35m
2 stops
BRU8:55 amBrussels Bruxelles-National
$765
Air Canada
Jun 22
BRU6:20 amBrussels Bruxelles-National
21h 05m
2 stops
STL8:25 pmLambert-St Louis
Jun 28
STL1:20 pmLambert-St Louis
10h 50m
1 stop
BRU7:10 amBrussels Bruxelles-National
$766
Air Canada
Jun 22
BRU6:20 amBrussels Bruxelles-National
21h 05m
2 stops
STL8:25 pmLambert-St Louis
Jun 28
STL8:40 amLambert-St Louis
15h 30m
2 stops
BRU7:10 amBrussels Bruxelles-National
$767

United Airlines flights from Belgium to St. Louis

Our best United Airlines deals on Belgium to St. Louis flight tickets
United Airlines
Jun 22
BRU6:20 amBrussels Bruxelles-National
14h 05m
1 stop
STL1:25 pmLambert-St Louis
Jun 28
STL1:13 pmLambert-St Louis
12h 47m
1 stop
BRU9:00 amBrussels Bruxelles-National
$788
United Airlines
Jun 10
BRU6:20 amBrussels Bruxelles-National
14h 05m
1 stop
STL1:25 pmLambert-St Louis
Jun 23
STL12:55 pmLambert-St Louis
11h 20m
1 stop
BRU7:15 amBrussels Bruxelles-National
$881
United Airlines
Jun 10
BRU6:20 amBrussels Bruxelles-National
14h 05m
1 stop
STL1:25 pmLambert-St Louis
Jun 23
STL7:22 amLambert-St Louis
16h 48m
2 stops
BRU7:10 amBrussels Bruxelles-National
$884

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 June 4, 2026.
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

Cheapest round-trip

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/22

6:20 am-8:25 pm

2 stops21h 05m

Lambert-St Louis

Sun 6/28

1:20 pm-8:55 am

2 stops36h 35m

$765

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/22

6:20 am-8:25 pm

2 stops21h 05m

Lambert-St Louis

Sun 6/28

1:20 pm-7:10 am

1 stop10h 50m

$769

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/22

9:40 am-8:25 pm

1 stop17h 45m

Lambert-St Louis

Sun 6/28

2:15 pm-7:50 am

1 stop10h 35m

$773

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 7/13

11:10 am-11:44 pm

1 stop19h 34m

Lambert-St Louis

Mon 7/20

3:30 pm-1:40 pm

1 stop15h 10m

$785
Quickest round-trip

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/22

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Sun 6/28

1:13 pm-9:00 am

1 stop12h 47m

$788

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 7/13

11:10 am-11:44 pm

1 stop19h 34m

Lambert-St Louis

Mon 7/20

7:05 pm-8:40 pm

2 stops18h 35m

$789

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 7/5

10:15 am-3:46 pm

1 stop12h 31m

Lambert-St Louis

Wed 7/15

8:43 am-7:15 am

1 stop15h 32m

$792

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 7/13

12:00 pm-11:44 pm

2 stops18h 44m

Lambert-St Louis

Mon 7/20

3:22 pm-1:15 pm

2 stops14h 53m

$798

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 7/5

9:55 am-6:42 pm

2 stops39h 47m

Lambert-St Louis

Wed 7/15

8:43 am-7:15 am

1 stop15h 32m

$822

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 7/5

9:55 am-8:07 pm

2 stops17h 12m

Lambert-St Louis

Wed 7/15

10:20 am-7:15 am

2 stops13h 55m

$848

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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, September 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 $0. The month of February is another great option to travel to St. Louis, with average flight prices from Belgium averaging around $0.

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

You could potentially save up to 48% 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

14h 05m

Direct flights

None
The fastest flight from Belgium to St. Louis takes 14h 05m
There are no direct flights from Belgium to St. Louis. There are no popular flight routes from Belgium to St. Louis.
Search flight deals

Frequently asked questions about flying from Belgium to St. Louis

  • 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 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.

Traveling to a place near St. Louis?

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