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Bruxelles-National

$534+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$526
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$803
From Lambert-St Louis to Brussels Bruxelles-National
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Highest demand for flights based on searches. 20% potential increase in price ($241 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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 11/1210:00 amSTL - BRU
1 stop15h 55mUnited Airlines
Thu 11/2710:00 amBRU - STL
2 stops36h 46mUnited Airlines
Deal found 9/11$534
This United deal was found by Cheapflights users on 9/9. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:27 pmSTL - BRU
1 stop32h 28mMultiple Airlines
Tue 12/2310:00 amBRU - STL
2 stops36h 29mMultiple Airlines
Deal found 9/9$541
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/2611:05 amSTL - BRU
1 stop14h 50mUnited Airlines
Tue 11/411:55 amBRU - STL
2 stops18h 49mUnited Airlines
Deal found 9/11$546
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:30 amSTL - BRU
2 stops18h 20mAir Canada
Tue 12/2310:00 amBRU - STL
2 stops36h 29mAir Canada
Deal found 9/9$548
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:05 pmSTL - BRU
2 stops33h 45mAir Canada
Tue 11/410:00 amBRU - STL
2 stops35h 25mAir Canada
Deal found 9/11$553
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:30 pmSTL - BRU
1 stop11h 35mUnited Airlines
Tue 10/1410:00 amBRU - STL
2 stops31h 49mUnited Airlines
Deal found 9/9$574
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:05 pmSTL - BRU
2 stops33h 45mAir Canada
Sun 11/210:00 amBRU - STL
2 stops36h 29mAir Canada
Deal found 9/11$575
This United Airlines deal was found by Cheapflights users on 9/11. 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 12/153:19 pmSTL - BRU
2 stops33h 31mUnited Airlines
Thu 12/2510:00 amBRU - STL
2 stops35h 26mUnited Airlines
Deal found 9/11$584
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:30 pmSTL - BRU
1 stop11h 35mAir Canada
Tue 10/1410:00 amBRU - STL
1 stop16h 57mAir Canada
Deal found 9/9$587

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 September 11, 2025.
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 11/12

10:00 am-7:50 am

2 stops14h 50m

Brussels Bruxelles-National

Thu 11/27

10:00 am-2:25 pm

2 stops35h 25m

$534

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

1:10 pm-7:15 am

1 stop11h 05m

Brussels Bruxelles-National

Thu 11/27

10:00 am-10:45 pm

2 stops43h 45m

$534

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 12/9

5:27 pm-8:55 am

1 stop32h 28m

Brussels Bruxelles-National

Tue 12/23

10:00 am-3:29 pm

2 stops36h 29m

$541

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 10/26

11:05 am-7:55 am

1 stop14h 50m

Brussels Bruxelles-National

Tue 11/4

11:55 am-11:44 pm

2 stops18h 49m

$546

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 10/26

4:05 pm-7:50 am

2 stops33h 45m

Brussels Bruxelles-National

Tue 11/4

10:00 am-2:25 pm

2 stops35h 25m

$553

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 1/12

9:57 am-8:55 am

1 stop15h 58m

Brussels Bruxelles-National

Fri 1/23

10:10 am-9:13 pm

1 stop18h 03m

$556

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 10/7

1:30 pm-8:05 am

1 stop11h 35m

Brussels Bruxelles-National

Tue 10/14

10:00 am-10:49 am

2 stops31h 49m

$574

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 12/15

10:00 am-8:55 am

1 stop15h 55m

Brussels Bruxelles-National

Thu 12/25

10:00 am-2:26 pm

2 stops35h 26m

$579

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 9/20

5:30 pm-9:00 am

1 stop32h 30m

$662

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 9/20

1:10 pm-11:00 am

2 stops14h 50m

$852

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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, November is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $614). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,077). 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.

What is the cheapest time of day to fly from STL to BRU?

Find hourly flight availability from St. Louis to Bruxelles-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 32% on flights from St. Louis to Brussels Bruxelles-National Airport by exploring options for tickets in the afternoon.

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 September 11, 2025.
Read reviews from past customers who have flown United Airlines 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
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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. 1 airline 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 11h 05m. Air Canada provides one of the quickest options available for as low as $534. 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 is the cheapest airline to fly from St. Louis to Brussels Bruxelles-National Airport round-trip?

    Our cheapest airline available from St. Louis to Brussels Bruxelles-National Airport is United Airlines. Our recent data shows that you can find tickets from as low as $657 on this airline. This flight start at 27% 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, November is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $614). Flying from St. Louis to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,077). 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
Charleroi
Mons
Mechelen
Zaventem

Browse thousands of different options on Cheapflights for your next trip

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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
Springfield to Bruxelles-National flights
St. Louis to Charleroi Brussels flights

Top airline flying from St. Louis to Bruxelles-National

Discover the top airline 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$657Average$857FlexibilityNo cancel feeOn-time69%

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