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 Air Canada. Our recent data shows that you can find tickets from as low as $581 on this airline. Additional options worth looking into are United Airlines and Scandinavian Airlines, starting at $604 and $683 round-trip. These flights start at 40% lower than the current average price 3 months from now.

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

Travelers seeking maximum savings on their St. Louis to Brussels Bruxelles-National Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 38% when planning your travel around this day of the week.

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

February is one of the best times of the year to fly to Brussels Bruxelles-National Airport from St. Louis. Prices for February average $970 per person but you can even find prices for as low as $617. The most expensive prices can be found in the month of July. Opting for a February flight can save you 36% on your journey compared to booking in July

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.

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.

$581+ Flights from St. Louis to Brussels Bruxelles-National Airport

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Cheap flight deals from St. Louis to Bruxelles-National

Round-trip from	$581 (Booking.com)
Popular in	July
Cheapest in	February
Average price	$1,260

From Lambert-St Louis to Brussels Bruxelles-National

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($202 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 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 June 12, 2025.

Tue 11/186:43 pmSTL - BRU

2 stops30h 12mAir Canada

Tue 11/2510:00 amBRU - STL

2 stops36h 29mAir Canada

Deal found 6/11

$581

Tue 11/189:00 amSTL - BRU

2 stops15h 55mUnited Airlines

Tue 11/2510:10 amBRU - STL

1 stop17h 54mUnited Airlines

Deal found 6/11

$604

Wed 10/84:05 pmSTL - BRU

2 stops14h 10mMultiple Airlines

Tue 10/1410:00 amBRU - STL

1 stop16h 57mMultiple Airlines

Deal found 6/11

$645

Wed 9/243:30 pmSTL - BRU

2 stops35h 10mScandinavian Airlines

Wed 10/84:00 pmBRU - STL

2 stops38h 39mScandinavian Airlines

Deal found 6/11

$683

Wed 9/2411:51 amSTL - BRU

2 stops13h 49mKLM

Wed 10/810:45 amBRU - STL

1 stop14h 17mKLM

Deal found 6/11

$736

Sun 8/171:37 pmSTL - BRU

2 stops22h 18mIberia

Sat 8/2312:05 pmBRU - STL

2 stops39h 53mIberia

Deal found 6/11

$845

Wed 7/237:00 amSTL - BRU

2 stops18h 40mDelta

Mon 7/286:10 amBRU - STL

2 stops22h 32mDelta

Deal found 6/12

$993

Thu 6/2611:35 amSTL - BRU

1 stop12h 25mLufthansa

Sun 6/292:25 pmBRU - STL

2 stops15h 20mLufthansa

Deal found 6/12

$1,238

Best flights from St. Louis to Bruxelles-National
Discover carefully curated flight deals from St. Louis to Bruxelles-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 11/186:43 pmSTL - BRU

2 stops30h 12mAir Canada

Tue 11/2510:00 amBRU - STL

2 stops36h 29mAir Canada

Deal found 6/11

$581

Tue 11/189:00 amSTL - BRU

2 stops15h 55mUnited Airlines

Tue 11/2510:10 amBRU - STL

1 stop17h 54mUnited Airlines

Deal found 6/11

$604

Wed 10/84:05 pmSTL - BRU

2 stops14h 10mMultiple Airlines

Tue 10/1410:00 amBRU - STL

1 stop16h 57mMultiple Airlines

Deal found 6/11

$645

Wed 9/243:30 pmSTL - BRU

2 stops35h 10mScandinavian Airlines

Wed 10/84:00 pmBRU - STL

2 stops38h 39mScandinavian Airlines

Deal found 6/11

$683

Wed 9/2411:51 amSTL - BRU

2 stops13h 49mKLM

Wed 10/810:45 amBRU - STL

1 stop14h 17mKLM

Deal found 6/11

$736

Sun 8/171:37 pmSTL - BRU

2 stops22h 18mIberia

Sat 8/2312:05 pmBRU - STL

2 stops39h 53mIberia

Deal found 6/11

$845

Wed 7/237:00 amSTL - BRU

2 stops18h 40mDelta

Mon 7/286:10 amBRU - STL

2 stops22h 32mDelta

Deal found 6/12

$993

Thu 6/2611:35 amSTL - BRU

1 stop12h 25mLufthansa

Sun 6/292:25 pmBRU - STL

2 stops15h 20mLufthansa

Deal found 6/12

$1,238

Last-minute flights from St. Louis to Bruxelles-National
Discover last-minute flight deals from St. Louis to Bruxelles-National. Data last updated June 12, 2025 and is based on user searches.

Thu 6/2611:35 amSTL - BRU

1 stop12h 25mLufthansa

Sun 6/292:25 pmBRU - STL

2 stops15h 20mLufthansa

Deal found 6/12

$1,238

Thu 6/2610:48 amSTL - BRU

2 stops15h 32mKLM

Mon 7/76:10 amBRU - STL

2 stops15h 27mKLM

Deal found 6/10

$1,322

Mon 7/78:00 amSTL - BRU

2 stops17h 00mMultiple Airlines

Mon 7/148:40 pmBRU - STL

2 stops25h 36mMultiple Airlines

Deal found 6/10

$938

Tue 7/151:30 pmSTL - BRU

1 stop11h 30mAir Canada

Mon 7/2110:00 amBRU - STL

1 stop17h 00mAir Canada

Deal found 6/10

$974

Sun 7/201:30 pmSTL - BRU

1 stop11h 30mUnited Airlines

Sun 7/2710:15 amBRU - STL

1 stop12h 32mUnited Airlines

Deal found 6/11

$940

Wed 7/237:00 amSTL - BRU

2 stops18h 40mDelta

Mon 7/286:10 amBRU - STL

2 stops22h 32mDelta

Deal found 6/12

$993

One-way flights from St. Louis to Bruxelles-National
Search for one-way flight options from St. Louis to Bruxelles-National. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Fri 7/111:20 pmSTL - BRU

1 stop12h 40mAustrian Airlines

Deal found 6/12

$1,441

Fri 7/115:27 pmSTL - BRU

2 stops18h 43mBritish Airways

Deal found 6/12

$2,360

Cheapflights Fare Finder

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

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/18

1:30 pm-8:00 am

1 stop11h 30m

Brussels Bruxelles-National

Sun 8/24

10:00 am-3:44 pm

2 stops36h 44m

$627

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/17

8:15 am-7:15 am

1 stop16h 00m

Brussels Bruxelles-National

Sun 8/24

10:00 am-8:00 pm

1 stop17h 00m

$644

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/18

3:40 pm-9:40 am

2 stops35h 00m

Brussels Bruxelles-National

Sat 8/23

7:10 pm-11:14 pm

2 stops35h 04m

$757

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 9/4

1:30 pm-2:15 pm

3 stops17h 45m

Brussels Bruxelles-National

Tue 9/9

8:20 pm-7:57 pm

2 stops30h 37m

$826

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/17

1:37 pm-6:55 pm

2 stops22h 18m

Brussels Bruxelles-National

Sat 8/23

12:05 pm-8:58 pm

2 stops39h 53m

$845

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 7/23

7:00 am-8:40 am

2 stops18h 40m

Brussels Bruxelles-National

Mon 7/28

6:10 am-9:42 pm

2 stops22h 32m

$993

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 6/26

11:35 am-7:00 am

1 stop12h 25m

Brussels Bruxelles-National

Sun 6/29

2:25 pm-10:45 pm

2 stops15h 20m

$1,238

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 6/26

10:48 am-9:20 am

2 stops15h 32m

Brussels Bruxelles-National

Mon 7/7

6:10 am-2:37 pm

2 stops15h 27m

$1,322

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 7/11

1:20 pm-9:00 am

1 stop12h 40m

$1,441

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 7/11

5:27 pm-7:10 pm

2 stops18h 43m

$2,360

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 $1,096). 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?

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.

Rainfall in Bruxelles-National by month

In terms of precipitation, rainfall in Brussels Bruxelles-National Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Brussels Bruxelles-National Airport when rainfall is around 1.6 in.

Temperature in Bruxelles-National by month

If weather is an important factor for your trip to Brussels Bruxelles-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

Reviews of airlines servicing Bruxelles-National

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

802 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,387 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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.
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 Air Canada. Our recent data shows that you can find tickets from as low as $581 on this airline. Additional options worth looking into are United Airlines and Scandinavian Airlines, starting at $604 and $683 round-trip. These flights start at 40% 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 $1,096). 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

Charleroi

Mons

Mechelen

Zaventem

Spa

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Top airline flying from St. Louis to Bruxelles-National

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$628	Average$915	FlexibilityNo cancel fee	On-time69%

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$581+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.

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

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Cheap flight deals from St. Louis to Bruxelles-National

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Cheapest in

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Find flight deals from St. Louis to Bruxelles-National

Cheapest flights from St. Louis to Bruxelles-NationalExplore 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 June 12, 2025.

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 June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Brussels Bruxelles-National Airport that are best for you.

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.

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?

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 June 12, 2025.

Rainfall in Bruxelles-National by month

Plan your trip to Bruxelles-National by taking into account the average rainfall totals by month.

Temperature in Bruxelles-National by month

Plan your trip to Bruxelles-National by taking into account the average temperature totals by month.

Reviews of airlines servicing Bruxelles-National

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?

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Bruxelles-National

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Top airline flying from St. Louis to Bruxelles-National

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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 June 12, 2025.