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Cheap flights from St. Louis to Brussels from $307

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Brussels departing on 5/6. 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 St. Louis to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:00 pm - 8:40 pm
STL
-
CRL
24h 40m
2 stops
Multiple Airlines Logo
9:00 am - 8:04 pm
CRL
-
STL
18h 04m
2 stops
$1,207Multiple Airlines
Sun, May 3 - Tue, May 12
Multiple Airlines Logo
4:05 pm - 9:15 pm
STL
-
CRL
22h 10m
3 stops
Multiple Airlines Logo
9:30 am - 1:25 pm
CRL
-
STL
34h 55m
2 stops
$1,402Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
4:05 pm - 9:15 pm
STL
-
CRL
22h 10m
3 stops
Multiple Airlines Logo
9:05 pm - 3:25 pm
CRL
-
STL
25h 20m
3 stops
$1,455Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
4:05 pm - 9:50 pm
STL
-
CRL
22h 45m
2 stops
Multiple Airlines Logo
9:30 am - 1:25 pm
CRL
-
STL
34h 55m
2 stops
$1,481Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
7:05 am - 8:30 pm
STL
-
CRL
30h 25m
2 stops
Multiple Airlines Logo
6:10 pm - 8:25 pm
CRL
-
STL
33h 15m
3 stops
$1,596Multiple Airlines
Tue, May 26 - Sat, Jun 6
Multiple Airlines Logo
7:05 am - 1:40 pm
STL
-
CRL
23h 35m
3 stops
Multiple Airlines Logo
11:35 am - 12:06 pm
CRL
-
STL
31h 31m
3 stops
$1,610Multiple Airlines
Tue, May 26 - Sat, Jun 6
Multiple Airlines Logo
4:05 pm - 9:30 pm
STL
-
CRL
22h 25m
3 stops
Multiple Airlines Logo
7:00 pm - 1:25 pm
CRL
-
STL
25h 25m
2 stops
$1,744Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
1:00 pm - 2:55 pm
STL
-
CRL
18h 55m
2 stops
Multiple Airlines Logo
9:25 pm - 8:25 pm
CRL
-
STL
30h 00m
2 stops
$1,908Multiple Airlines
Mon, May 25 - Fri, Jun 5
Multiple Airlines Logo
7:05 am - 2:55 pm
STL
-
CRL
24h 50m
3 stops
Multiple Airlines Logo
9:25 pm - 8:25 pm
CRL
-
STL
30h 00m
2 stops
$1,923Multiple Airlines
Mon, May 25 - Fri, Jun 5
Multiple Airlines Logo
4:05 pm - 9:30 pm
STL
-
CRL
22h 25m
3 stops
Multiple Airlines Logo
9:05 pm - 8:25 pm
CRL
-
STL
30h 20m
3 stops
$1,966Multiple Airlines
Thu, Apr 23 - Thu, Apr 30

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Charleroi Brussels Airport 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 March 12, 2026.
Use the filters below to find and compare flights from St. Louis to Charleroi Brussels Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Sun 5/3

1:00 pm-8:40 pm

2 stops24h 40m

Charleroi Brussels

Tue 5/12

9:00 am-8:04 pm

2 stops18h 04m

$1,207

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Tue 4/21

4:05 pm-9:15 pm

3 stops22h 10m

Charleroi Brussels

Tue 4/28

9:30 am-1:25 pm

2 stops34h 55m

$1,402

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Tue 4/21

4:05 pm-9:15 pm

3 stops22h 10m

Charleroi Brussels

Tue 4/28

9:05 pm-3:25 pm

3 stops25h 20m

$1,455

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Tue 4/21

4:05 pm-9:50 pm

2 stops22h 45m

Charleroi Brussels

Tue 4/28

9:30 am-1:25 pm

2 stops34h 55m

$1,481

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Tue 5/26

7:05 am-8:30 pm

2 stops30h 25m

Charleroi Brussels

Sat 6/6

6:10 pm-8:25 pm

3 stops33h 15m

$1,596

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Tue 5/26

7:05 am-1:40 pm

3 stops23h 35m

Charleroi Brussels

Sat 6/6

11:35 am-12:06 pm

3 stops31h 31m

$1,610

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Thu 4/23

4:05 pm-9:30 pm

3 stops22h 25m

Charleroi Brussels

Thu 4/30

7:00 pm-1:25 pm

2 stops25h 25m

$1,744

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Mon 5/25

1:00 pm-2:55 pm

2 stops18h 55m

Charleroi Brussels

Fri 6/5

9:25 pm-8:25 pm

2 stops30h 00m

$1,908

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Mon 5/25

7:05 am-2:55 pm

3 stops24h 50m

Charleroi Brussels

Fri 6/5

9:25 pm-8:25 pm

2 stops30h 00m

$1,923

St. LouisBrussels

STL - CRL

STLCRL

Lambert-St Louis

Thu 4/23

4:05 pm-9:30 pm

3 stops22h 25m

Charleroi Brussels

Thu 4/30

9:05 pm-8:25 pm

3 stops30h 20m

$1,966

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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When to book flights from St. Louis to Charleroi Brussels Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Charleroi Brussels Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Charleroi Brussels Airport (STL to CRL) flight deals and tips

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

Fastest flight time

22h 25m

Direct flights

None
The fastest flight from St. Louis to Charleroi Brussels Airport takes 22h 25m
There are no direct flights from St. Louis to Charleroi Brussels Airport. There are no popular flight routes from St. Louis to Charleroi Brussels Airport.
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  • How far is Lambert-St Louis to Charleroi Brussels by plane?

    There are 4407.0 mi between Lambert-St Louis and Charleroi Brussels. A reasonable flight in good conditions will take 22h 25m.

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

    Prices for flights from Lambert-St Louis Airport to Charleroi Brussels Airport are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Charleroi Brussels Airport.

  • What documentation or ID do you need to fly to Charleroi Brussels Airport?

    The travel and health documents required for your trip to Charleroi Brussels Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Charleroi Brussels Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from St. Louis to Charleroi Brussels Airport?

    Confirm your travel details to search for the latest offers for flights from St. Louis to Charleroi Brussels Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from St. Louis to Charleroi Brussels Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

It is quick and easy to find St. Louis to Brussels 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 Brussels that suits you.

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

All flight searches from St. Louis to Brussels on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for St. Louis to Brussels flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for St. Louis to Brussels flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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