Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Brussels from $328

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 6/25. 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 St. Louis to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:39 pm - 7:50 pm
STL
-
BRU
21h 11m
2 stops
Scandinavian Airlines Logo
8:30 pm - 8:50 pm
BRU
-
STL
31h 20m
2 stops
$838Scandinavian Airlines
Mon, Aug 24 - Sat, Sep 5
Multiple Airlines Logo
6:06 am - 10:35 pm
STL
-
BRU
33h 29m
2 stops
Multiple Airlines Logo
7:05 pm - 11:41 pm
BRU
-
STL
35h 36m
2 stops
$889Multiple Airlines
Wed, Sep 30 - Mon, Oct 5
Multiple Airlines Logo
7:44 am - 6:20 pm
STL
-
BRU
27h 36m
2 stops
Multiple Airlines Logo
7:05 pm - 7:46 pm
BRU
-
STL
31h 41m
2 stops
$890Multiple Airlines
Wed, Sep 30 - Mon, Oct 5
British Airways Logo
3:35 pm - 2:25 pm
STL
-
BRU
15h 50m
2 stops
British Airways Logo
10:40 am - 11:59 pm
BRU
-
STL
20h 19m
2 stops
$908British Airways
Mon, Aug 24 - Sat, Sep 5
British Airways Logo
9:35 pm - 3:05 pm
STL
-
BRU
10h 30m
1 stop
British Airways Logo
8:50 pm - 7:30 pm
BRU
-
STL
29h 40m
1 stop
$912British Airways
Wed, Sep 30 - Mon, Oct 5
British Airways Logo
9:35 pm - 3:05 pm
STL
-
BRU
10h 30m
1 stop
British Airways Logo
8:50 pm - 7:30 pm
BRU
-
STL
29h 40m
1 stop
$913British Airways
Wed, Sep 30 - Mon, Oct 5
Lufthansa Logo
3:30 pm - 1:40 pm
STL
-
BRU
15h 10m
1 stop
Lufthansa Logo
9:15 pm - 1:25 pm
BRU
-
STL
23h 10m
2 stops
$945Lufthansa
Wed, Sep 30 - Mon, Oct 5
Lufthansa Logo
3:30 pm - 11:50 am
STL
-
BRU
13h 20m
1 stop
Lufthansa Logo
7:30 pm - 1:25 pm
BRU
-
STL
24h 55m
2 stops
$946Lufthansa
Wed, Sep 30 - Mon, Oct 5
Multiple Airlines Logo
12:10 pm - 7:10 am
STL
-
BRU
12h 00m
1 stop
Multiple Airlines Logo
10:40 am - 11:59 pm
BRU
-
STL
20h 19m
2 stops
$957Multiple Airlines
Mon, Aug 24 - Sat, Sep 5
Lufthansa Logo
1:29 pm - 4:15 pm
STL
-
BRU
19h 46m
2 stops
Lufthansa Logo
6:20 am - 1:25 pm
BRU
-
STL
14h 05m
1 stop
$962Lufthansa
Wed, Sep 30 - Mon, Oct 5

Delta flights from St. Louis to Brussels

Our best Delta deals on St. Louis to Brussels flight tickets
Delta
Jul 6
STL6:00 amLambert-St Louis
18h 40m
1 stop
BRU7:40 amBrussels Bruxelles-National
Jul 21
BRU9:45 amBrussels Bruxelles-National
29h 34m
1 stop
STL8:19 amLambert-St Louis
$1,003
Delta
Jul 5
STL9:21 amLambert-St Louis
15h 19m
1 stop
BRU7:40 amBrussels Bruxelles-National
Jul 14
BRU8:05 amBrussels Bruxelles-National
22h 48m
2 stops
STL11:53 pmLambert-St Louis
$1,005
Delta
Jul 5
STL7:08 amLambert-St Louis
17h 27m
2 stops
BRU7:35 amBrussels Bruxelles-National
Jul 14
BRU8:05 amBrussels Bruxelles-National
21h 10m
2 stops
STL10:15 pmLambert-St Louis
$1,014

United Airlines flights from St. Louis to Brussels

Our best United Airlines deals on St. Louis to Brussels flight tickets
United Airlines
Jul 6
STL12:10 pmLambert-St Louis
12h 00m
1 stop
BRU7:10 amBrussels Bruxelles-National
Jul 21
BRU11:10 amBrussels Bruxelles-National
19h 26m
1 stop
STL11:36 pmLambert-St Louis
$995
United Airlines
Jul 6
STL12:10 pmLambert-St Louis
12h 00m
1 stop
BRU7:10 amBrussels Bruxelles-National
Jul 21
BRU12:00 pmBrussels Bruxelles-National
18h 29m
2 stops
STL11:29 pmLambert-St Louis
$1,000
United Airlines
Jul 6
STL6:01 amLambert-St Louis
18h 09m
2 stops
BRU7:10 amBrussels Bruxelles-National
Jul 21
BRU12:00 pmBrussels Bruxelles-National
18h 29m
2 stops
STL11:29 pmLambert-St Louis
$1,004

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Brussels 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 May 23, 2026.
Use the filters below to find and compare flights from St. Louis to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/24

3:39 pm-7:50 pm

2 stops21h 11m

Brussels Bruxelles-National

Sat 9/5

8:30 pm-8:50 pm

2 stops31h 20m

$838

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

6:06 am-10:35 pm

2 stops33h 29m

Brussels Bruxelles-National

Mon 10/5

7:05 pm-11:41 pm

2 stops35h 36m

$889

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

7:44 am-6:20 pm

2 stops27h 36m

Brussels Bruxelles-National

Mon 10/5

7:05 pm-7:46 pm

2 stops31h 41m

$890

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/24

3:35 pm-2:25 pm

2 stops15h 50m

Brussels Bruxelles-National

Sat 9/5

10:40 am-11:59 pm

2 stops20h 19m

$908

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-3:05 pm

1 stop10h 30m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-7:30 pm

1 stop29h 40m

$912

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-3:05 pm

1 stop10h 30m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-7:30 pm

1 stop29h 40m

$913

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

3:30 pm-1:40 pm

1 stop15h 10m

Brussels Bruxelles-National

Mon 10/5

9:15 pm-1:25 pm

2 stops23h 10m

$945

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

3:30 pm-11:50 am

1 stop13h 20m

Brussels Bruxelles-National

Mon 10/5

7:30 pm-1:25 pm

2 stops24h 55m

$946
Quickest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/24

12:10 pm-7:10 am

1 stop12h 00m

Brussels Bruxelles-National

Sat 9/5

10:40 am-11:59 pm

2 stops20h 19m

$957

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

1:29 pm-4:15 pm

2 stops19h 46m

Brussels Bruxelles-National

Mon 10/5

6:20 am-1:25 pm

1 stop14h 05m

$962

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Brussels from

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

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 typical price of a round-trip flight between St. Louis and Brussels?

What is the cheapest month to fly to Brussels?

In general, April is the cheapest month to fly from St. Louis to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $414. If you are unable to visit Brussels during the month of April, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $441.

Cheap St. Louis to Brussels flight deals and tips

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

Fastest flight time

15h 19m

Direct flights

None
The fastest flight from St. Louis to Brussels takes 15h 19m
There are no direct flights from St. Louis to Brussels. There are no popular flight routes from St. Louis to Brussels.
Search flight deals

Frequently asked questions about flying from St. Louis to Brussels

  • How far is Lambert-St Louis to Brussels by plane?

    There are 4389.6 mi between Lambert-St Louis and Brussels. By plane, this route typically takes 15h 19m.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Brussels.

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

    The travel and health documents required for your trip to Brussels 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 Brussels. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Brussels

Compare and see reviews for airlines that fly from St. Louis to Brussels with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $441Free CancellationRating
6.8
8,022 reviews
Search Lufthansa flights
United AirlinesPriceFrom $574Free CancellationRating
7.4
9,751 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Brussels from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Brussels quick and easy, saving you time and money.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Brussels.

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

If you are simply researching potential flights to Brussels, momondo offers a useful price alert feature which will track prices for flights to Brussels from St. Louis and alert you when they change.

An easier way to manage your Brussels 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
Mon 6/22
Mon 6/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belgium

Fly into one of these airports located in Brussels

Airports listed have a maximum distance of 27.4 mi from Brussels
Brussels Bruxelles-National Airport
Charleroi Brussels Airport