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 $602 on this airline. Additional options worth looking into are United Airlines and Virgin Atlantic, starting at $638 and $694 round-trip. These flights start at 35% 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.

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.

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).

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 $933 per person but you can even find prices for as low as $617. The most expensive prices can be found in the month of June. Opting for a February flight can save you 38% on your journey compared to booking in June

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.

$448+ Flights from St. Louis to Brussels Bruxelles-National Airport

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

Airfare is below average for this route at the moment. St. Louis to Brussels Bruxelles-National Airport flights typically cost between $654 and $838 in August. The cheapest round-trip price found within the last 3 days was $548 on Multiple Airlines (Aug 25-Sep 1).

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Cheap flight deals from St. Louis to Bruxelles-National

Round-trip from	$548 (Mytrip)
One-way from	$448 (Mytrip)
Popular in	June
Cheapest in	February
Average price	$1,127

From Lambert-St Louis to Brussels Bruxelles-National

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One-way flight from Lambert-St Louis to Brussels Bruxelles-National

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Highest demand for flights based on searches. 19% potential increase in price ($220 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 29, 2025.

Mon 8/251:30 pmSTL - BRU

2 stops25h 10mMultiple Airlines

Mon 9/110:25 pmBRU - STL

2 stops28h 32mMultiple Airlines

Deal found 7/28

$548

Tue 11/43:14 pmSTL - BRU

1 stop10h 41mUnited Airlines

Tue 11/1110:00 amBRU - STL

2 stops36h 49mUnited Airlines

Deal found 7/29

$584

Wed 11/124:05 pmSTL - BRU

2 stops14h 10mAir Canada

Wed 11/1910:00 amBRU - STL

2 stops35h 25mAir Canada

Deal found 7/29

$589

Tue 12/911:57 amSTL - BRU

2 stops15h 53mBritish Airways

Fri 12/1911:45 amBRU - STL

2 stops35h 26mBritish Airways

Deal found 7/29

$644

Sun 8/1010:57 amSTL - BRU

1 stop13h 48mLufthansa

Tue 8/1910:00 amBRU - STL

1 stop17h 00mLufthansa

Deal found 7/29

$677

Sun 8/1012:15 pmSTL - BRU

1 stop13h 30mDelta

Tue 8/1910:45 amBRU - STL

2 stops16h 48mDelta

Deal found 7/29

$694

Thu 9/253:40 pmSTL - BRU

2 stops21h 10mScandinavian Airlines

Thu 10/28:30 pmBRU - STL

2 stops33h 54mScandinavian Airlines

Deal found 7/29

$750

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 July 29, 2025.

Mon 8/251:30 pmSTL - BRU

2 stops25h 10mMultiple Airlines

Mon 9/110:25 pmBRU - STL

2 stops28h 32mMultiple Airlines

Deal found 7/28

$548

Sun 8/101:30 pmSTL - BRU

1 stop11h 30mAir Canada

Tue 8/1910:00 amBRU - STL

1 stop17h 00mAir Canada

Deal found 7/28

$602

Sun 8/106:00 amSTL - BRU

1 stop18h 45mUnited Airlines

Tue 8/1910:00 amBRU - STL

1 stop17h 00mUnited Airlines

Deal found 7/29

$638

Sun 8/105:23 pmSTL - BRU

2 stops32h 17mVirgin Atlantic

Tue 8/1910:45 amBRU - STL

2 stops16h 48mVirgin Atlantic

Deal found 7/29

$694

Tue 10/145:09 pmSTL - BRU

2 stops17h 36mBritish Airways

Mon 10/209:15 pmBRU - STL

2 stops28h 21mBritish Airways

Deal found 7/28

$704

Sun 8/33:41 pmSTL - BRU

2 stops15h 09mScandinavian Airlines

Fri 8/810:30 amBRU - STL

2 stops18h 04mScandinavian Airlines

Deal found 7/28

$2,136

Sun 8/310:57 amSTL - BRU

1 stop13h 48mLufthansa

Fri 8/88:35 amBRU - STL

1 stop22h 09mLufthansa

Deal found 7/28

$2,693

Last-minute flights from St. Louis to Bruxelles-National
Discover last-minute flight deals from St. Louis to Bruxelles-National. Data last updated July 29, 2025 and is based on user searches.

Sun 8/310:57 amSTL - BRU

1 stop13h 48mLufthansa

Fri 8/88:35 amBRU - STL

1 stop22h 09mLufthansa

Deal found 7/28

$2,693

Mon 8/43:41 pmSTL - BRU

2 stops21h 09mScandinavian Airlines

Sat 8/92:20 pmBRU - STL

2 stops40h 33mScandinavian Airlines

Deal found 7/29

$1,431

Tue 8/51:30 pmSTL - BRU

1 stop11h 30mUnited Airlines

Tue 8/129:50 amBRU - STL

2 stops35h 47mUnited Airlines

Deal found 7/29

$774

Thu 8/78:00 amSTL - BRU

2 stops17h 00mAir Canada

Thu 8/149:40 amBRU - STL

2 stops17h 20mAir Canada

Deal found 7/29

$798

Thu 8/78:00 amSTL - BRU

2 stops17h 00mMultiple Airlines

Thu 8/146:20 amBRU - STL

3 stops40h 01mMultiple Airlines

Deal found 7/29

$1,128

Sun 8/101:30 pmSTL - BRU

1 stop11h 30mAir Canada

Tue 8/1910:00 amBRU - STL

2 stops33h 25mAir Canada

Deal found 7/29

$602

Sun 8/106:00 amSTL - BRU

1 stop18h 45mUnited Airlines

Tue 8/1910:00 amBRU - STL

1 stop17h 00mUnited Airlines

Deal found 7/29

$638

Sun 8/1010:57 amSTL - BRU

1 stop13h 48mLufthansa

Tue 8/1910:00 amBRU - STL

1 stop17h 00mLufthansa

Deal found 7/29

$677

Sun 8/1012:15 pmSTL - BRU

1 stop13h 30mDelta

Tue 8/1910:45 amBRU - STL

2 stops16h 48mDelta

Deal found 7/29

$694

Mon 8/251:30 pmSTL - BRU

2 stops25h 10mMultiple Airlines

Mon 9/110:25 pmBRU - STL

2 stops28h 32mMultiple Airlines

Deal found 7/28

$548

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 July 29, 2025.

Sun 8/105:26 pmSTL - BRU

3 stops35h 04mMultiple Airlines

Deal found 7/27

$448

Sun 8/101:30 pmSTL - BRU

1 stop11h 30mUnited Airlines

Deal found 7/27

$489

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 8/25

1:30 pm-9:40 pm

2 stops25h 10m

Brussels Bruxelles-National

Mon 9/1

10:25 pm-7:57 pm

2 stops28h 32m

$548

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/10

1:30 pm-8:00 am

1 stop11h 30m

Brussels Bruxelles-National

Tue 8/19

10:00 am-8:00 pm

1 stop17h 00m

$602

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/10

6:00 am-7:45 am

1 stop18h 45m

Brussels Bruxelles-National

Tue 8/19

10:00 am-8:00 pm

1 stop17h 00m

$638

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/10

5:23 pm-8:40 am

2 stops32h 17m

Brussels Bruxelles-National

Tue 8/19

10:45 am-8:33 pm

2 stops16h 48m

$694

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 10/14

5:09 pm-5:45 pm

2 stops17h 36m

Brussels Bruxelles-National

Mon 10/20

9:15 pm-6:36 pm

2 stops28h 21m

$704

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/3

3:41 pm-1:50 pm

2 stops15h 09m

Brussels Bruxelles-National

Fri 8/8

10:30 am-9:34 pm

2 stops18h 04m

$2,136

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/3

10:57 am-7:45 am

1 stop13h 48m

Brussels Bruxelles-National

Fri 8/8

8:35 am-11:44 pm

1 stop22h 09m

$2,693

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/10

5:26 pm-11:30 am

3 stops35h 04m

$448

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 8/10

1:30 pm-8:00 am

1 stop11h 30m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 $1,081). 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.

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

Reviews of airlines servicing Bruxelles-National

Read reviews from past customers who have flown United Airlines, Virgin Atlantic, and Scandinavian 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

8,896 reviews

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

8,896 reviews

United Airlines

7.4

Good

8,896 reviews

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??

Virgin Atlantic

7.4

Good

655 reviews

United Airlines

7.4

Good

8,896 reviews

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??

Scandinavian Airlines

7.3

Good

1,449 reviews

United Airlines

7.4

Good

8,896 reviews

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??

Air Canada

7.1

Good

9,826 reviews

United Airlines

7.4

Good

8,896 reviews

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??

Lufthansa

6.8

Okay

7,265 reviews

United Airlines

7.4

Good

8,896 reviews

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

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 $602 on this airline. Additional options worth looking into are United Airlines and Virgin Atlantic, starting at $638 and $694 round-trip. These flights start at 35% 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 $1,081). 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$882	FlexibilityNo cancel fee	On-time69%

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$448+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

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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 July 29, 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 July 29, 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 July 29, 2025.

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

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 Brussels Bruxelles-National Airport?

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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 July 29, 2025.