STL - BRU

$412 Find Cheap Flights from St. Louis to Brussels Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Brussels departing on 4/28. 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 Brussels Bruxelles-National Airport

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

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

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Everything you should know

Cheapest round-trip
$686
Typical prices: $627-$1,078
Scandinavian Airlines
Tue 4/28Tue 5/5
STL - BRU • 2 stops
Cheapest one-way
$412
Aer Lingus
Tue 4/28
STL - BRU • 2 stops
Top airlines
Cheapest • from $686 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Brussels. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $776 (round-trip)
Shortest trip • 11h 30m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 46% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Brussels!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Brussels (STL-BRU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Brussels 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 St. Louis to Brussels

Tue, Apr 28 - Tue, May 5
Scandinavian Airlines Logo
11:42 am - 9:40 am
STL
-
BRU
38h 58m
2 stops
Scandinavian Airlines Logo
10:20 am - 9:19 pm
BRU
-
STL
17h 59m
2 stops
$686Scandinavian Airlines
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
4:30 pm - 3:15 pm
STL
-
BRU
15h 45m
2 stops
British Airways Logo
7:55 pm - 7:30 pm
BRU
-
STL
30h 35m
1 stop
$725British Airways
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
12:27 pm - 10:35 pm
STL
-
BRU
27h 08m
2 stops
Multiple Airlines Logo
7:05 pm - 7:30 pm
BRU
-
STL
31h 25m
2 stops
$732Multiple Airlines
Tue, Apr 14 - Tue, Apr 28
Finnair Logo
12:27 pm - 10:35 pm
STL
-
BRU
27h 08m
2 stops
Finnair Logo
7:05 pm - 7:30 pm
BRU
-
STL
31h 25m
2 stops
$735Finnair
Sun, Apr 19 - Tue, Apr 28
British Airways Logo
8:54 am - 2:10 pm
STL
-
BRU
22h 16m
2 stops
British Airways Logo
7:55 pm - 7:30 pm
BRU
-
STL
30h 35m
1 stop
$739British Airways
Tue, Apr 28 - Tue, May 5
British Airways Logo
9:35 pm - 3:15 pm
STL
-
BRU
10h 40m
1 stop
British Airways Logo
7:55 pm - 7:30 pm
BRU
-
STL
30h 35m
2 stops
$747British Airways
Sun, May 3 - Tue, May 12
Multiple Airlines Logo
9:40 pm - 8:00 pm
STL
-
BRU
15h 20m
1 stop
Multiple Airlines Logo
7:05 am - 10:19 pm
BRU
-
STL
22h 14m
2 stops
$759Multiple Airlines
Sun, May 3 - Tue, May 12
British Airways Logo
4:30 pm - 2:10 pm
STL
-
BRU
14h 40m
2 stops
British Airways Logo
10:55 am - 7:33 pm
BRU
-
STL
15h 38m
2 stops
$762British Airways
Sun, May 3 - Tue, May 12
Multiple Airlines Logo
5:21 pm - 10:35 pm
STL
-
BRU
22h 14m
2 stops
Multiple Airlines Logo
6:30 am - 11:56 pm
BRU
-
STL
24h 26m
2 stops
$766Multiple Airlines
Thu, Apr 30 - Thu, May 7
British Airways Logo
5:21 pm - 4:10 pm
STL
-
BRU
15h 49m
2 stops
British Airways Logo
10:50 am - 10:19 pm
BRU
-
STL
18h 29m
2 stops
$771British Airways
Booking Insights

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

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

How much is a round-trip flight from St. Louis to Brussels Bruxelles-National Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Brussels Bruxelles-National Airport departing in April.

What is the cheapest month to fly from St. Louis to Brussels Bruxelles-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Brussels Bruxelles-National Airport, 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 from St. Louis to Brussels Bruxelles-National Airport is February, where tickets cost $494 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $2,205 and $1,282 respectively.

Good to know

Low seasonJanuary
Cheapest flight$412
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from St. Louis to Brussels Airport

When to book flights from St. Louis to Brussels

Are your dates flexible? Find out the best times to travel from St. Louis to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Brussels Airport flights

  • What is the cheapest flight from St. Louis to Brussels Bruxelles-National Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Brussels Bruxelles-National Airport was $412 for a one-way ticket and $686 for a round-trip.

  • Do I need a passport to fly between St. Louis and Brussels Airport?

    A passport is required to fly from St. Louis to Brussels Airport.

  • Which airports will I be using when flying from St. Louis to Brussels Airport?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Brussels Airport, also known as Brussels Bruxelles-National.

  • Which aircraft models fly most regularly from St. Louis to Brussels Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Brussels Airport?

    Star Alliance is the only airline alliance operating flights between St. Louis and Brussels Airport.

  • Which is the best airline for flights from St. Louis to Brussels, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from St. Louis to Brussels are United Airlines and Lufthansa. With an average price for the route of $782 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $2,200 and an overall rating of 6.8.

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

    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 from St. Louis to Brussels Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels Airport from 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 from St. Louis to Brussels Airport?

    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 Brussels Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BRU can sometimes prove cheaper using this method.

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

    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 Brussels Airport from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Brussels

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Brussels. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Brussels? 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 9451 reviews
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
Airline reviews

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

8.0 ExcellentMatthew, Mar 2026
IAD - CMH
Read more United Airlines reviews

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

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

Information on your arrival and departure airports