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Bruxelles-National

$345+ Cheap flights from St. Louis (STL) to Bruxelles-National (BRU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Apr 13 — Apr 201
Mon 4/13
Mon 4/20
1 adult, Economy
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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 March 14, 2026.

This Scandinavian Airlines deal was found by Cheapflights users on 3/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:30 pm
STL
-
BRU
2 stops22h 05m
Scandinavian Airlines
Fri 12/410:20 am
BRU
-
STL
2 stops20h 19m
Scandinavian Airlines
Deal found 3/13$690
This Finnair deal was found by Cheapflights users on 3/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:05 am
STL
-
BRU
2 stops32h 30m
Multiple Airlines
Tue 4/287:05 pm
BRU
-
STL
2 stops31h 25m
Multiple Airlines
Deal found 3/13$721
This Trip.com deal was found by Cheapflights users on 3/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/39:40 pm
STL
-
BRU
1 stop29h 25m
British Airways
Mon 5/118:50 pm
BRU
-
STL
1 stop29h 40m
British Airways
Deal found 3/13$746
This Flighttix deal was found by Cheapflights users on 3/9. 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.
Sun 5/311:42 am
STL
-
BRU
2 stops38h 58m
Scandinavian Airlines
Tue 5/1210:20 am
BRU
-
STL
2 stops20h 39m
Scandinavian Airlines
Deal found 3/9$756
This British Airways deal was found by Cheapflights users on 3/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/39:40 pm
STL
-
BRU
1 stop15h 20m
Multiple Airlines
Mon 5/1110:50 am
BRU
-
STL
2 stops16h 09m
Multiple Airlines
Deal found 3/13$764
This KLM deal was found by Cheapflights users on 3/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:50 pm
STL
-
BRU
1 stop29h 50m
KLM
Tue 5/129:45 am
BRU
-
STL
1 stop21h 14m
KLM
Deal found 3/9$769
This Finnair deal was found by Cheapflights users on 3/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:11 pm
STL
-
BRU
2 stops19h 54m
Multiple Airlines
Mon 10/57:05 pm
BRU
-
STL
2 stops36h 07m
Multiple Airlines
Deal found 3/12$771
This Mytrip deal was found by Cheapflights users on 3/9. 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.
Sun 5/31:00 pm
STL
-
BRU
2 stops36h 55m
Air Canada
Tue 5/129:55 am
BRU
-
STL
1 stop17h 30m
Air Canada
Deal found 3/9$774
This KAYAK deal was found by Cheapflights users on 3/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:35 pm
STL
-
BRU
1 stop29h 20m
British Airways
Mon 10/58:50 pm
BRU
-
STL
1 stop29h 40m
British Airways
Deal found 3/13$779
This Finnair deal was found by Cheapflights users on 3/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:05 am
STL
-
BRU
2 stops28h 15m
Multiple Airlines
Tue 5/1211:20 am
BRU
-
STL
2 stops17h 59m
Multiple Airlines
Deal found 3/10$791

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 March 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$721
(Finnair)

One-way from

$345
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$685
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
One-way flight from Lambert-St Louis to Brussels Bruxelles-National
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($332 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($119 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 14, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 5/3

6:50 pm-7:40 am

1 stop29h 50m

Brussels Bruxelles-National

Tue 5/12

9:45 am-11:59 pm

1 stop21h 14m

$769

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 4/24

10:00 am-1:15 pm

2 stops20h 15m

Brussels Bruxelles-National

Fri 5/1

9:55 am-8:25 pm

1 stop17h 30m

$866
Quickest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 4/10

9:10 am-7:10 am

2 stops15h 00m

Brussels Bruxelles-National

Fri 4/17

8:30 am-1:25 pm

1 stop11h 55m

$877

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 4/25

3:15 pm-1:15 pm

2 stops15h 00m

Brussels Bruxelles-National

Sat 5/2

9:55 am-9:13 pm

2 stops18h 18m

$926

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/1

2:29 pm-6:20 pm

2 stops20h 51m

Brussels Bruxelles-National

Sat 4/18

11:20 am-10:17 pm

2 stops17h 57m

$975

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/1

2:29 pm-10:35 pm

2 stops25h 06m

Brussels Bruxelles-National

Wed 4/8

7:45 pm-10:17 pm

2 stops33h 32m

$992

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 7/6

12:10 pm-7:10 am

1 stop12h 00m

Brussels Bruxelles-National

Tue 7/21

9:40 am-9:26 pm

2 stops18h 46m

$1,039

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/1

12:04 pm-7:40 am

1 stop12h 36m

Brussels Bruxelles-National

Sat 4/18

9:45 am-7:11 pm

1 stop16h 26m

$1,234
Cheapest one-way

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 4/14

7:00 am-12:55 pm

2 stops46h 55m

$401

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 3/31

4:51 pm-12:55 pm

3 stops37h 04m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 March.
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 $433). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $974). 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 March 14, 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
9,423 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

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
9,423 reviews
United Airlines
7.4
Good
9,423 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

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
7,848 reviews
United Airlines
7.4
Good
9,423 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

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 20h 15m. United Airlines provides one of the quickest options available for as low as $866. There are 4393 mi between St. Louis and Brussels Bruxelles-National Airport.

  • 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 51% 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 $433). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $974). 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

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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

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 March 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$441Average$2,200FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$606Average$780FlexibilityNo cancel feeOn-time69%

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