$741 Find Cheap Flights from Belgium to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Belgium to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Belgium to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Fri, May 1 - Tue, May 5
Lufthansa Logo
7:00 am - 1:25 pm
BRU
-
STL
13h 25m
1 stop
Lufthansa Logo
7:09 pm - 5:30 pm
STL
-
BRU
15h 21m
2 stops
$764Lufthansa
Wed, May 6 - Wed, May 13
Air Canada Logo
7:00 am - 8:25 pm
BRU
-
STL
20h 25m
2 stops
Air Canada Logo
1:05 pm - 1:15 pm
STL
-
BRU
17h 10m
2 stops
$771Air Canada
Wed, May 6 - Wed, May 13
Lufthansa Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
Lufthansa Logo
12:15 pm - 7:15 am
STL
-
BRU
12h 00m
1 stop
$773Lufthansa
Fri, May 1 - Tue, May 5
Lufthansa Logo
7:00 am - 1:25 pm
BRU
-
STL
13h 25m
1 stop
Lufthansa Logo
12:15 pm - 7:15 am
STL
-
BRU
12h 00m
1 stop
$775Lufthansa
Wed, May 6 - Wed, May 13
Lufthansa Logo
2:25 pm - 10:45 pm
BRU
-
STL
15h 20m
2 stops
Lufthansa Logo
11:34 am - 7:45 am
STL
-
BRU
13h 11m
1 stop
$777Lufthansa
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
Multiple Airlines Logo
1:05 pm - 1:15 pm
STL
-
BRU
17h 10m
2 stops
$779Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Air Canada Logo
8:30 am - 8:25 pm
BRU
-
STL
18h 55m
2 stops
Air Canada Logo
1:05 pm - 1:15 pm
STL
-
BRU
17h 10m
2 stops
$780Air Canada
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
Multiple Airlines Logo
1:05 pm - 7:10 am
STL
-
BRU
11h 05m
1 stop
$783Multiple Airlines
Fri, May 1 - Tue, May 5
Lufthansa Logo
2:25 pm - 10:50 pm
BRU
-
STL
15h 25m
2 stops
Lufthansa Logo
7:09 pm - 5:30 pm
STL
-
BRU
15h 21m
2 stops
$786Lufthansa
Fri, May 1 - Tue, May 5
Multiple Airlines Logo
7:00 am - 1:25 pm
BRU
-
STL
13h 25m
1 stop
Multiple Airlines Logo
1:05 pm - 1:15 pm
STL
-
BRU
17h 10m
2 stops
$789Multiple 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.

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Brussels, at $764 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 days.

Good to know

Low seasonMay
Cheapest flight$764
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Brussels to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Brussels, at $764 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 days.

  • 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 1,506 direct flights from within Belgium to St. Louis. The most common day for departures is Sunday, with 15% 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

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Belgium to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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 9581 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

10.0 ExcellentHartaj, Apr 2026
SFO - RDU
Read more United Airlines reviews

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

It was a more comfortable seat don't get stuck in middle, makes for uncomfortable situation

Business class would have been better , poor quality blanket , services

First time flying with UA and it was a great experience. Thank you

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Meals were poor and service rendered on return flight was mediocre as compared to the flight we took to Germany earlier where the attendants were more attentive, energetic, and mindful of passengers' needs. Thumbs up to crew of UA 58. Thumbs down to UA 59..

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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