$577 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 1/12. 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
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Everything you should know

Cheapest round-trip
$577
Typical prices: $762-$779
Multiple Airlines
Mon 1/12Sun 1/18
BRU - STL • 2 stops
Cheapest one-way
$1,268
Lufthansa
Wed 4/22
BRU - STL • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
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

Mon, Jan 12 - Sun, Jan 18
Multiple Airlines Logo
7:00 am - 11:59 pmBRU-STL
23h 59m2 stops
Multiple Airlines Logo
9:57 am - 7:50 amSTL-BRU
14h 53m2 stops
$577Multiple Airlines
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Mon, Jan 12 - Sun, Jan 18
Multiple Airlines Logo
7:00 am - 11:59 pmBRU-STL
23h 59m2 stops
Multiple Airlines Logo
12:44 pm - 7:15 amSTL-BRU
11h 31m1 stop
$579Multiple Airlines
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Mon, Jan 12 - Sun, Jan 18
Lufthansa Logo
11:15 am - 11:59 pmBRU-STL
19h 44m1 stop
Lufthansa Logo
12:44 pm - 7:15 amSTL-BRU
11h 31m1 stop
$583Lufthansa
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Wed, Mar 18 - Fri, Mar 27
Multiple Airlines Logo
7:00 am - 2:55 pmBRU-STL
13h 55m1 stop
Multiple Airlines Logo
4:05 pm - 1:15 pmSTL-BRU
15h 10m2 stops
$593Multiple Airlines
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Thu, Jan 15 - Mon, Jan 19
Air Canada Logo
7:00 am - 3:29 pmBRU-STL
39h 29m2 stops
Air Canada Logo
4:05 pm - 1:15 pmSTL-BRU
38h 10m2 stops
$596Air Canada
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Wed, Mar 18 - Fri, Mar 27
Lufthansa Logo
7:00 am - 2:55 pmBRU-STL
13h 55m1 stop
Lufthansa Logo
4:50 pm - 1:35 pmSTL-BRU
14h 45m1 stop
$598Lufthansa
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Wed, Feb 4 - Sun, Feb 8
Lufthansa Logo
9:00 am - 11:59 pmBRU-STL
21h 59m2 stops
Lufthansa Logo
12:44 pm - 7:15 amSTL-BRU
11h 31m1 stop
$601Lufthansa
Find Deal
Wed, Feb 4 - Sun, Feb 8
Lufthansa Logo
9:00 am - 7:27 pmBRU-STL
17h 27m2 stops
Lufthansa Logo
11:22 am - 8:05 amSTL-BRU
13h 43m1 stop
$603Lufthansa
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Wed, Feb 4 - Sun, Feb 8
Lufthansa Logo
3:40 pm - 10:58 pmBRU-STL
14h 18m1 stop
Lufthansa Logo
11:22 am - 8:05 amSTL-BRU
13h 43m1 stop
$611Lufthansa
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Mon, Jan 12 - Sun, Jan 18
Lufthansa Logo
7:00 am - 11:59 pmBRU-STL
23h 59m2 stops
Lufthansa Logo
12:44 pm - 7:15 amSTL-BRU
11h 31m1 stop
$624Lufthansa
Find Deal
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 17h 27m.

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

There are around 291 direct flights from within Belgium to St. Louis every day. Most flights depart in the morning, with 8:00 am the most common departure time and 44% of flights departing in the morning.

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Good to know

Low seasonJune
Cheapest flight$577
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 3% increase in price.
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.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Friday where tickets can be as cheap as $710. On the other hand, the most expensive day to fly is Saturday, where prices are $738 on average.

  • 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.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the morning, when flights cost $732 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is $732.

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

    Each week there are around 2,034 direct flights from within Belgium to St. Louis. The most common day for departures is Friday, with 17% 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 9057 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

8.0 ExcellentAnonymous, Nov 2025BTR - IAH
Read more United Airlines reviews

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

We boarded late. The crew at the airport was dismissive. The seat cushion on the plane was uncomfortable.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

United has come a long way, it’s been a fantastic experience traveling with them.

Even though we were delayed, we were able to make our connection

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Great crew, excellent landing, good food. Over all great experience. Thank you!

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

St. Louis (STL)