HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bruxelles-National

$489+ Cheap flights from St. Louis (STL) to Bruxelles-National (BRU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Bruxelles-National with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Bruxelles-National

Cheapest flights from St. Louis to Bruxelles-National
Explore the most affordable flight options available from St. Louis to Bruxelles-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/184:05 pm
STL
-
BRU
2 stops15h 10m
United Airlines
Wed 3/2510:00 am
BRU
-
STL
2 stops37h 59m
United Airlines
Deal found 1/24$489
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:15 pm
STL
-
BRU
2 stops15h 00m
United Airlines
Mon 3/210:10 am
BRU
-
STL
1 stop19h 49m
United Airlines
Deal found 1/24$505
This Mytrip deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:41 am
STL
-
BRU
2 stops17h 09m
Air Canada
Sat 3/1410:00 am
BRU
-
STL
2 stops41h 07m
Air Canada
Deal found 1/24$506
This Air Canada deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/184:05 pm
STL
-
BRU
2 stops15h 10m
Air Canada
Wed 3/2510:00 am
BRU
-
STL
2 stops35h 29m
Air Canada
Deal found 1/26$510
This FlightHub deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/238:17 am
STL
-
BRU
3 stops16h 33m
Air Canada
Mon 3/210:00 am
BRU
-
STL
2 stops36h 29m
Air Canada
Deal found 1/24$522
This Delta deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:00 am
STL
-
BRU
2 stops18h 35m
Delta
Sat 3/1410:00 am
BRU
-
STL
1 stop19h 58m
Delta
Deal found 1/24$619
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:12 am
STL
-
BRU
2 stops40h 28m
Scandinavian Airlines
Fri 4/103:15 pm
BRU
-
STL
2 stops36h 51m
Scandinavian Airlines
Deal found 1/26$631
This FlightHub deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm
STL
-
BRU
2 stops37h 10m
Scandinavian Airlines
Thu 9/245:45 am
BRU
-
STL
2 stops24h 52m
Scandinavian Airlines
Deal found 1/24$661
This Flighttix deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:41 am
STL
-
BRU
2 stops17h 09m
Air Canada
Mon 2/2310:00 am
BRU
-
STL
2 stops18h 05m
Air Canada
Deal found 1/25$681

Find flight deals from St. Louis to Bruxelles-National

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Bruxelles-National (BRU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$489
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$659
Provider with most accurate pricing for Lambert-St Louis-Brussels Bruxelles-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Brussels Bruxelles-National flights.
Search Deals
From Lambert-St Louis to Brussels Bruxelles-National
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($304 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($116 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Bruxelles-National that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from St. Louis to Brussels Bruxelles-National Airport that are best for you.

Fly from

St. Louis

Fly to

Bruxelles-National

Route

Depart

Return

Price

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/18

4:05 pm-1:15 pm

2 stops15h 10m

Brussels Bruxelles-National

Wed 3/25

10:00 am-5:59 pm

2 stops37h 59m

$489

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 2/23

3:15 pm-1:15 pm

2 stops15h 00m

Brussels Bruxelles-National

Mon 3/2

10:10 am-10:59 pm

1 stop19h 49m

$505

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 3/5

7:41 am-7:50 am

2 stops17h 09m

Brussels Bruxelles-National

Sun 3/15

10:00 am-3:29 pm

2 stops35h 29m

$509

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 3/5

6:00 am-7:35 am

2 stops18h 35m

Brussels Bruxelles-National

Sat 3/14

10:00 am-11:58 pm

1 stop19h 58m

$619

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 2/20

1:11 pm-8:55 am

1 stop12h 44m

Brussels Bruxelles-National

Mon 2/23

10:00 am-10:59 pm

2 stops19h 59m

$694

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 7/5

3:30 pm-9:25 am

3 stops34h 55m

$585

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 5/18

1:00 pm-1:15 pm

2 stops17h 15m

$594

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 7/5

12:10 pm-7:10 am

1 stop12h 00m

$713

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 5/18

8:53 am-3:15 pm

3 stops47h 22m

$7,640

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Compare providers for flights from St. Louis to Bruxelles-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Bruxelles-National in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Brussels Bruxelles-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Brussels Bruxelles-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Brussels Bruxelles-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Brussels Bruxelles-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Brussels Bruxelles-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Bruxelles-National

Have a flexible travel schedule? Discover the best time to fly to Bruxelles-National from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Brussels Bruxelles-National Airport

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

Currently, April is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $443). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,008). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from St. Louis to Brussels Bruxelles-National Airport?

Reviews of airlines servicing Bruxelles-National

Get insights into the airlines that provide service to Bruxelles-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bruxelles-National. Reviews last updated January 26, 2026.
Read reviews from past customers who have flown United Airlines and Lufthansa from St. Louis to Brussels Bruxelles-National Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,198 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,198 reviews
United Airlines
7.4
Good
9,198 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,747 reviews
United Airlines
7.4
Good
9,198 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Bruxelles-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Brussels Bruxelles-National?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Brussels Bruxelles-National. 2 airlines have flights from Lambert-St Louis to Brussels Bruxelles-National on a regular basis. Booking flights from Lambert-St Louis to Brussels Bruxelles-National should not be difficult; the airport handles an average of 0 outbound flights to Brussels Bruxelles-National per day.

  • How long is the flight from St. Louis to Brussels Bruxelles-National Airport?

    A quick flight from St. Louis to Brussels Bruxelles-National Airport can take about 15h 10m. United Airlines provides one of the quickest options available for as low as $489. There are 4393 mi between St. Louis and Brussels Bruxelles-National Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from St. Louis to Brussels Bruxelles-National Airport round-trip?

    Our cheapest airline available from St. Louis to Brussels Bruxelles-National Airport is Lufthansa. Our recent data shows that you can find tickets from as low as $441 on this airline. An additional option worth looking into is United Airlines, starting at $606. These flights start at 52% lower than the current average price 3 months from now.

  • Can I find deals for flights from St. Louis to Bruxelles-National that include hotel bookings?

    Yes. In addition to deals on St. Louis to Bruxelles-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Bruxelles-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Bruxelles-National.

  • Can I find deals for business class flights from St. Louis to Bruxelles-National?

    Yes. Cheapflights offers flight deals from St. Louis to Bruxelles-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $443). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,008). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Brussels Bruxelles-National Airport?

Book flights to Brussels Bruxelles-National Airport if you plan to visit one of these locations
Mons
Hasselt
Charleroi
Mechelen
Zaventem

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Bruxelles-National

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Bruxelles-National flights
Springfield to Bruxelles-National flights
St. Louis to Charleroi Brussels flights

Top 2 airlines flying from St. Louis to Bruxelles-National

Discover the top 2 airlines that operate flights from St. Louis to Bruxelles-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$441Average$2,205FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$606Average$803FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.