$479 Find Cheap Flights from Belgium to St. Louis - Compare and Save

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Cheap Flights from Belgium to St. Louis

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Oct 5 - Mon, Oct 12
American Airlines Logo
10:50 am - 8:57 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
17h 07m2 stops London Heathrow Chicago O'Hare Intl
American Airlines Logo
5:40 pm - 2:25 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
13h 45m2 stops Philadelphia London Heathrow
$755American Airlines
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
3:50 pm - 5:30 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
32h 40m2 stops London Heathrow Charlotte Douglas
American Airlines Logo
4:21 pm - 7:10 pmSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
19h 49m2 stops Charlotte Douglas London Heathrow
$777American Airlines
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
10:50 am - 9:43 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
17h 53m2 stops London Heathrow Philadelphia
American Airlines Logo
10:12 am - 10:05 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
16h 53m2 stops Dallas/Fort Worth London Heathrow
$777American Airlines
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
10:50 am - 9:43 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
17h 53m2 stops London Heathrow Philadelphia
American Airlines Logo
10:12 am - 10:05 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
16h 53m2 stops Dallas/Fort Worth London Heathrow
$778American Airlines
Mon, Sep 14 - Sun, Sep 20
Lufthansa Logo
6:20 am - 1:25 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 05m1 stop Frankfurt am Main
Lufthansa Logo
12:25 pm - 7:45 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 20m1 stop Newark
$789Lufthansa
Fri, Oct 9 - Fri, Oct 16
Lufthansa Logo
6:20 am - 1:25 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 05m1 stop Frankfurt am Main
Lufthansa Logo
8:30 am - 7:15 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
15h 45m1 stop Washington, D.C. Dulles Intl
$789Lufthansa
Mon, Sep 7 - Sun, Sep 13
Lufthansa Logo
6:20 am - 1:25 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 05m1 stop Frankfurt am Main
Lufthansa Logo
1:00 pm - 7:15 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
11h 15m1 stop Washington, D.C. Dulles Intl
$791Lufthansa
Mon, Sep 14 - Sun, Sep 20
Multiple Airlines Logo
6:20 am - 1:25 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 05m1 stop Frankfurt am Main
Multiple Airlines Logo
9:40 am - 7:10 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
14h 30m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
$792Multiple Airlines
Fri, Sep 18 - Fri, Sep 25
United Airlines Logo
6:20 am - 6:41 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
19h 21m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
11:35 am - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
14h 25m1 stop Chicago O'Hare Intl
$810United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:20 am - 2:17 pmBRU  Brussels Bruxelles-National-STL Lambert-St Louis
14h 57m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
1:29 pm - 9:00 amSTL  Lambert-St Louis-BRU Brussels Bruxelles-National
12h 31m1 stop Chicago O'Hare Intl
$811United Airlines
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular route to St. Louis on KAYAK is from Brussels, which takes 15h 34m.

How many direct flights to St. Louis are there each day?

There are around 376 direct flights from within Belgium to St. Louis every day. Most flights depart in the afternoon, with 36% of flights departing in the afternoon.

Good to know

Low season

March

Cheapest flight

$479
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Brussels to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    Central St. Louis is 13 miles away from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 2,630 direct flights from within Belgium to St. Louis. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top airline flying from Belgium to St. Louis

 
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10123 reviews
6.7Food
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

What would be infinitely better if for Kayak to not offer this flight as if it was completely different airlines rather than United and then filtering me through some creepy discount site.

6.0 GoodAnonymous, Jul 2026
Read more United Airlines reviews

What would be infinitely better if for Kayak to not offer this flight as if it was completely different airlines rather than United and then filtering me through some creepy discount site.

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Fenton
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis