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$513+ Cheap flights from Boise (BOI) to Brussels

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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BRU
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap flight deals from Boise to Brussels

Cheapest flights from Boise to Brussels
Explore the most affordable flight options available from Boise to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 2026.

This United Airlines deal was found by Cheapflights users on 3/19. 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 12/22:43 pm
BOI
-
BRU
2 stops14h 32m
United Airlines
Sun 12/610:10 am
BRU
-
BOI
2 stops21h 49m
United Airlines
Deal found 3/19$739
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 12/37:00 am
BOI
-
BRU
2 stops22h 15m
United Airlines
Mon 12/74:55 pm
BRU
-
BOI
2 stops36h 21m
United Airlines
Deal found 3/23$753
This British Airways deal was found by Cheapflights users on 3/20. 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.
Mon 5/41:53 pm
BOI
-
BRU
2 stops21h 17m
Multiple Airlines
Mon 5/119:55 pm
BRU
-
BOI
2 stops32h 43m
Multiple Airlines
Deal found 3/20$765
This United Airlines deal was found by Cheapflights users on 3/20. 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 5/48:34 am
BOI
-
BRU
1 stop16h 26m
United Airlines
Mon 5/119:55 am
BRU
-
BOI
2 stops38h 51m
United Airlines
Deal found 3/20$778
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 4/2312:04 pm
BOI
-
BRU
2 stops17h 11m
United Airlines
Tue 4/2812:00 pm
BRU
-
BOI
2 stops17h 22m
United Airlines
Deal found 3/20$785
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:35 pm
BOI
-
BRU
1 stop24h 05m
Delta
Tue 4/289:45 am
BRU
-
BOI
1 stop35h 22m
Delta
Deal found 3/20$789

Find flight deals from Boise to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Brussels (BR1). 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 24, 2026.

Round-trip from

$765
(British Airways)

Popular in

January

Cheapest in

October

Average price

$681
From Boise Air Term. Gowen Fld to Brussels
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($550 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($139 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 Boise to Brussels 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 24, 2026.
Use the filters below to find and compare flights from Boise to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Mon 5/4

8:34 am-9:00 am

1 stop16h 26m

Brussels Bruxelles-National

Mon 5/11

9:55 am-4:46 pm

2 stops38h 51m

$778

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Thu 4/23

2:37 pm-1:15 pm

2 stops14h 38m

Brussels Bruxelles-National

Tue 4/28

10:15 am-11:02 pm

1 stop20h 47m

$785
Quickest round-trip

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Tue 7/21

2:40 pm-1:15 pm

2 stops14h 35m

Brussels Bruxelles-National

Tue 8/4

9:55 am-5:56 pm

2 stops16h 01m

$1,085

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Thu 4/23

8:20 am-1:15 pm

3 stops20h 55m

Brussels Bruxelles-National

Tue 4/28

7:00 am-11:02 pm

3 stops24h 02m

$1,233

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Thu 4/23

6:15 am-7:10 am

2 stops16h 55m

Brussels Bruxelles-National

Tue 4/28

7:00 am-11:02 pm

3 stops24h 02m

$1,261

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Tue 7/21

8:25 am-9:00 am

1 stop16h 35m

Brussels Bruxelles-National

Tue 8/4

10:15 am-10:56 pm

1 stop20h 41m

$1,425

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Tue 7/21

8:25 am-1:15 pm

3 stops20h 50m

Brussels Bruxelles-National

Tue 8/4

7:00 am-10:56 pm

3 stops23h 56m

$2,828
Cheapest one-way

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Wed 6/17

2:05 pm-8:00 pm

2 stops21h 55m

$824

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Tue 6/16

4:15 pm-12:55 pm

2 stops36h 40m

$2,143

BoiseBrussels

BOI - BRU

BOIBRU

Boise Air Term. Gowen Fld

Sun 6/14

5:57 am-12:55 pm

2 stops46h 58m

$2,215

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 12 resultsSorted by cheapest first
1
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Best time to book a flight from Boise to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Boise 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 Boise to Brussels
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Brussels

Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated March 24, 2026.
Get a feel of what it's like to fly with United Airlines from Boise to Brussels by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,469 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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
9,469 reviews
United Airlines
7.4
Good
9,469 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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 Boise to Brussels. 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 Boise to Brussels?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly out of if you book a flight from Boise to Brussels. You should not have trouble finding flights to Brussels from Air Term. Gowen Fld; the airport handles an average of 0 outbound flights to Brussels per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Boise airport to Brussels. It is only a 3.3 mi journey to Air Term. Gowen Fld (BOI) from Boise’s city center.

  • How long is the flight from Boise to Brussels?

    Departing from Boise to Brussels will take you 16h 26m. There are 5002 mi between Boise and Brussels.

  • What is the cheapest airline to fly from Boise to Brussels round-trip?

    Flying on United Airlines is currently your cheapest option to Brussels, with prices starting at $637. United Airlines is currently priced 45% below the average price you’ll pay for this route.

  • Can I find deals for flights from Boise to Brussels that include hotel bookings?

    Yes. In addition to deals on Boise to Brussels flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Brussels?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Brussels.

  • Can I find deals for business class flights from Boise to Brussels?

    Yes. Cheapflights offers flight deals from Boise to Brussels by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Bruxelles-National flights

Top airline flying from Boise to Brussels

Discover the top airline that operate flights from Boise to Brussels. 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$637Average$886FlexibilityNo cancel feeOn-time69%

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