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Cheap flights from St. Louis to Brussels from $341

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 1:15 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
38h 10m2 stops Toronto Pearson Intl London Heathrow
Air Canada Logo
10:00 am - 3:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
36h 41m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$735Air Canada
Mon, Jan 25 - Thu, Jan 28
United Airlines Logo
3:15 pm - 1:15 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
15h 00m2 stops Chicago O'Hare Intl London Heathrow
United Airlines Logo
10:10 am - 3:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
12h 31m1 stop Chicago O'Hare Intl
$753United Airlines
Mon, Jan 25 - Thu, Jan 28
United Airlines Logo
1:08 pm - 8:55 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 47m1 stop Chicago O'Hare Intl
United Airlines Logo
11:55 am - 6:38 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
13h 43m1 stop Washington, D.C. Dulles Intl
$756United Airlines
Mon, Jan 25 - Thu, Jan 28
Multiple Airlines Logo
12:10 pm - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$764Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
12:10 pm - 1:15 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
18h 05m2 stops Montreal Pierre Elliott Trudeau Intl London Heathrow
Air Canada Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$767Air Canada
Mon, Sep 21 - Wed, Sep 30
Multiple Airlines Logo
12:10 pm - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
9:10 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
16h 31m1 stop Montreal Pierre Elliott Trudeau Intl
$767Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
9:04 am - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
16h 56m1 stop Chicago O'Hare Intl
United Airlines Logo
9:10 am - 11:22 amBRU  Brussels Bruxelles-National-STL Lambert-St Louis
33h 12m2 stops Montreal Pierre Elliott Trudeau Intl Newark
$787United Airlines
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
6:58 pm - 8:55 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
30h 57m1 stop Chicago O'Hare Intl
United Airlines Logo
10:00 am - 6:18 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
15h 18m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$798United Airlines
Sun, Dec 27 - Wed, Dec 30
Lufthansa Logo
3:40 pm - 8:20 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
21h 40m1 stop Frankfurt am Main
Lufthansa Logo
7:00 am - 1:45 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
$2,228Lufthansa
Sun, Dec 13 - Sun, Dec 27
Lufthansa Logo
3:40 pm - 10:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
11h 30m1 stop Frankfurt am Main
Lufthansa Logo
6:45 am - 9:22 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
21h 37m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$2,230Lufthansa
Sun, Dec 13 - Sun, Dec 27

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United Airlines flights from St. Louis to Brussels

Our best United Airlines deals on St. Louis to Brussels flight tickets
United Airlines
Jan 25
STL3:15 pmLambert-St Louis
15h 00m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Jan 28
BRU10:10 amBrussels Bruxelles-National
12h 31m
1 stop
STL3:41 pmLambert-St Louis
$753
United Airlines
Jan 25
STL1:08 pmLambert-St Louis
12h 47m
1 stop
BRU8:55 amBrussels Bruxelles-National
Jan 28
BRU11:55 amBrussels Bruxelles-National
13h 43m
1 stop
STL6:38 pmLambert-St Louis
$756
United Airlines
Sep 29
STL9:04 amLambert-St Louis
16h 56m
1 stop
BRU9:00 amBrussels Bruxelles-National
Oct 6
BRU9:10 amBrussels Bruxelles-National
33h 12m
2 stops
STL11:22 amLambert-St Louis
$787

Air Canada flights from St. Louis to Brussels

Our best Air Canada deals on St. Louis to Brussels flight tickets
Air Canada
Jan 25
STL4:05 pmLambert-St Louis
38h 10m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Jan 28
BRU10:00 amBrussels Bruxelles-National
36h 41m
2 stops
STL3:41 pmLambert-St Louis
$735
Air Canada
Sep 21
STL12:10 pmLambert-St Louis
18h 05m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Sep 30
BRU9:10 amBrussels Bruxelles-National
16h 31m
1 stop
STL6:41 pmLambert-St Louis
$767
Air Canada
Sep 21
STL12:10 pmLambert-St Louis
18h 05m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Sep 30
BRU9:10 amBrussels Bruxelles-National
16h 31m
1 stop
STL6:41 pmLambert-St Louis
$771

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Brussels that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 1/25

4:05 pm-1:15 pm

2 stops38h 10m

Brussels Bruxelles-National

Thu 1/28

10:00 am-3:41 pm

2 stops36h 41m

$735

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 1/25

3:15 pm-1:15 pm

2 stops15h 00m

Brussels Bruxelles-National

Thu 1/28

10:10 am-3:41 pm

1 stop12h 31m

$753
Quickest round-trip

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 1/25

1:08 pm-8:55 am

1 stop12h 47m

Brussels Bruxelles-National

Thu 1/28

11:55 am-6:38 pm

1 stop13h 43m

$756

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 9/21

12:10 pm-7:10 am

1 stop12h 00m

Brussels Bruxelles-National

Wed 9/30

9:10 am-6:41 pm

1 stop16h 31m

$764

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 9/21

12:10 pm-1:15 pm

2 stops18h 05m

Brussels Bruxelles-National

Wed 9/30

9:10 am-6:41 pm

1 stop16h 31m

$767

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Mon 9/21

12:10 pm-7:10 am

1 stop12h 00m

Brussels Bruxelles-National

Wed 9/30

9:10 am-6:41 pm

1 stop16h 31m

$767

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Tue 9/29

9:04 am-9:00 am

1 stop16h 56m

Brussels Bruxelles-National

Tue 10/6

9:10 am-11:22 am

2 stops33h 12m

$787

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Sun 12/27

6:58 pm-8:55 am

1 stop30h 57m

Brussels Bruxelles-National

Wed 12/30

10:00 am-6:18 pm

2 stops15h 18m

$798

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Sun 12/13

3:40 pm-8:20 pm

1 stop21h 40m

Brussels Bruxelles-National

Sun 12/27

7:00 am-1:45 pm

1 stop13h 45m

$2,228

St. LouisBrussels

STL Lambert-St Louis - BRU Brussels Bruxelles-National

STLBRU

Lambert-St Louis

Sun 12/13

3:40 pm-10:10 am

1 stop11h 30m

Brussels Bruxelles-National

Sun 12/27

6:45 am-9:22 pm

2 stops21h 37m

$2,230

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 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 cheapest month to fly to Brussels?

In general, February 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 $494. If you are unable to visit Brussels during the month of February, then departing from St. Louis during the month January is also very affordable. Most momondo users find prices during this month for around $657.

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

Best Price Found

$341

Fastest flight time

12h 00m

Direct flights

None
The best one-way flight to Brussels from St. Louis in the past 72 hours is $341. The best round-trip flight deal from St. Louis to Brussels found on momondo in the last 72 hours is $735.
The fastest flight from St. Louis to Brussels takes 12h 00m
There are no direct flights from St. Louis to Brussels. There are no popular flight routes from St. Louis to Brussels.
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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 12h 00m.

  • 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
8,202 reviews
Search Lufthansa flights
United AirlinesPriceFrom $507Free CancellationRating
7.4
10,104 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.

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Find better results for your trip to Belgium

Fly into one of these airports located in Brussels

Brussels Bruxelles-National Airport
Charleroi Brussels Airport