$554 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 6/2. 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

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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Flights 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Belgium to St. Louis.
Discover the best prices for you by selecting your travel dates on KAYAK.
British Airways Logo
10:40 am - 9:55 pmBRU-STL
18h 15m2 stops
British Airways Logo
1:21 pm - 2:20 pmSTL-BRU
17h 59m2 stops
$554British Airways
Find Deal
Mon, Jun 2 - Mon, Jun 9
British Airways Logo
9:15 pm - 4:22 pmBRU-STL
26h 07m2 stops
British Airways Logo
4:23 pm - 2:20 pmSTL-BRU
14h 57m2 stops
$555British Airways
Find Deal
Mon, Jun 2 - Mon, Jun 9
Air Canada Logo
10:00 am - 7:58 pmBRU-STL
16h 58m1 stop
Air Canada Logo
7:30 am - 8:00 amSTL-BRU
17h 30m2 stops
$589Air Canada
Find Deal
Mon, Jun 2 - Mon, Jun 9
Air Canada Logo
10:00 am - 7:58 pmBRU-STL
16h 58m1 stop
Air Canada Logo
7:30 am - 8:00 amSTL-BRU
17h 30m2 stops
$591Air Canada
Find Deal
Mon, Jun 2 - Mon, Jun 9
Air Canada Logo
10:00 am - 7:58 pmBRU-STL
16h 58m1 stop
Air Canada Logo
7:30 am - 7:50 amSTL-BRU
17h 20m1 stop
$592Air Canada
Find Deal
Mon, Jun 2 - Mon, Jun 9
 Logo
10:00 am - 8:00 pmBRU-STL
17h 00m1 stop
 Logo
1:30 pm - 8:05 amSTL-BRU
11h 35m1 stop
Sat, Aug 30 - Wed, Sep 10
Virgin Atlantic Logo
10:45 am - 6:05 pmBRU-STL
14h 20m1 stop
Virgin Atlantic Logo
7:10 pm - 8:40 amSTL-BRU
30h 30m1 stop
$639Virgin Atlantic
Find Deal
Fri, Jun 13 - Fri, Jun 20
Virgin Atlantic Logo
10:45 am - 8:39 pmBRU-STL
16h 54m2 stops
Virgin Atlantic Logo
5:30 pm - 8:40 amSTL-BRU
32h 10m1 stop
$657Virgin Atlantic
Find Deal
Mon, Jun 2 - Mon, Jun 9
Delta Logo
10:45 am - 9:04 amBRU-STL
29h 19m1 stop
Delta Logo
7:20 am - 8:40 amSTL-BRU
18h 20m2 stops
$802Delta
Find Deal
Fri, Aug 1 - Fri, Aug 22
 Logo
9:30 pm - 8:54 pmBRU-STL
30h 24m3 stops
 Logo
4:05 pm - 1:15 pmSTL-BRU
14h 10m2 stops
$1,120
Find Deal
Sun, Aug 31 - Wed, Sep 10
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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 month to fly to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to St. Louis is May, where tickets cost $435 on average for return flights. On the other hand, the most expensive months are November and April, where the average cost of tickets from Belgium is $1,923 and $910 respectively. For one-way flights, the best month to travel is May with an average price of $435.


Good to know

Low seasonFebruary
High seasonJanuary
Cheapest flight$554
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 7% 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.

  • 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 round-trip tickets can be as cheap as $710. On the other hand, the most expensive day to fly is Saturday, where round-trip 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 round-trip 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 1,529 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.

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.
6.6
British AirwaysOverall score based on 6842 reviews
6.4Entertainment
6.7Comfort
6.8Boarding
7.6Crew
6.3Food
Airline reviews

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

6.0 GoodLorrie, Apr 2025LHR - PDX
Read more British Airways reviews

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

The seats in row 31 are terrible and small and uncomfortable. Don't ever sit there. The window seat is so close to the curve of the plane is so annoying. I paid extra for this seat and I hated all 10 hours in it.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

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

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

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