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Bruxelles-National

$553+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRU
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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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 October 27, 2025.

This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/910:00 amSTL - BRU
2 stops20h 15mUnited Airlines
Tue 12/1611:55 amBRU - STL
1 stop14h 18mUnited Airlines
Deal found 10/25$553
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:00 pmSTL - BRU
2 stops17h 15mUnited Airlines
Wed 12/177:00 amBRU - STL
2 stops21h 58mUnited Airlines
Deal found 10/26$558
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/121:10 pmSTL - BRU
2 stops17h 05mUnited Airlines
Thu 11/2710:00 amBRU - STL
2 stops35h 24mUnited Airlines
Deal found 10/27$630
This United Airlines deal was found by Cheapflights users on 10/26. 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 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 stops14h 56mUnited Airlines
Thu 12/2510:00 amBRU - STL
2 stops38h 54mUnited Airlines
Deal found 10/26$635
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:00 amSTL - BRU
2 stops21h 15mUnited Airlines
Mon 11/174:55 pmBRU - STL
2 stops35h 59mUnited Airlines
Deal found 10/25$672

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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$553
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$873
Provider with most accurate pricing for Lambert-St Louis-Brussels Bruxelles-National flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Brussels Bruxelles-National flights.
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From Lambert-St Louis to Brussels Bruxelles-National
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($295 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($110 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 27, 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

Tue 12/9

10:00 am-1:15 pm

2 stops20h 15m

Brussels Bruxelles-National

Tue 12/16

11:55 am-7:13 pm

1 stop14h 18m

$553

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 12/10

1:00 pm-1:15 pm

2 stops17h 15m

Brussels Bruxelles-National

Wed 12/17

7:00 am-9:58 pm

2 stops21h 58m

$558

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/1

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Wed 4/8

8:30 am-1:30 pm

1 stop12h 00m

$601

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/1

8:25 am-7:15 am

1 stop15h 50m

Brussels Bruxelles-National

Wed 4/8

8:30 am-1:30 pm

1 stop12h 00m

$602

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

1:10 pm-1:15 pm

2 stops17h 05m

Brussels Bruxelles-National

Thu 11/27

10:00 am-3:46 pm

2 stops36h 46m

$630

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

6:30 am-7:50 am

2 stops18h 20m

Brussels Bruxelles-National

Thu 11/27

10:00 am-2:24 pm

2 stops35h 24m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Brussels Bruxelles-National Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, February is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $615). 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.

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 October 27, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 38% 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 October 27, 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
8,997 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 20h 15m. United Airlines provides one of the quickest options available for as low as $553. There are 4393 mi between St. Louis and Brussels Bruxelles-National Airport.

  • 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 $654 on this airline. This flight start at 34% 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, February is the cheapest month in which you can book a flight from St. Louis to Brussels Bruxelles-National Airport (average of $615). 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
Charleroi
Mons
Hasselt
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.
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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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$654Average$799FlexibilityNo cancel feeOn-time69%

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