$342 Find Cheap Flights from Boise to Belgium - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Belgium departing on 11/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Book Cheap Boise to Belgium Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Belgium that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Belgium

Thu, Aug 20 - Tue, Aug 25
Multiple Airlines Logo
3:19 pm - 6:20 pm
BOI
-
BRU
19h 01m
2 stops
Multiple Airlines Logo
7:05 am - 10:11 pm
BRU
-
BOI
23h 06m
2 stops
$849Multiple Airlines
Thu, Aug 20 - Tue, Aug 25
Multiple Airlines Logo
1:59 pm - 7:40 am
BOI
-
BRU
33h 41m
1 stop
Multiple Airlines Logo
8:05 am - 5:19 pm
BRU
-
BOI
17h 14m
2 stops
$851Multiple Airlines
Thu, Aug 20 - Tue, Aug 25
United Airlines Logo
12:24 pm - 9:00 am
BOI
-
BRU
12h 36m
1 stop
United Airlines Logo
10:15 am - 10:53 pm
BRU
-
BOI
20h 38m
1 stop
$892United Airlines
Thu, Aug 20 - Tue, Aug 25
Multiple Airlines Logo
6:30 am - 7:10 am
BOI
-
BRU
16h 40m
2 stops
Multiple Airlines Logo
9:30 am - 10:40 pm
BRU
-
BOI
21h 10m
3 stops
$906Multiple Airlines
Thu, Aug 20 - Tue, Aug 25
Air Canada Logo
5:44 pm - 7:50 am
BOI
-
BRU
30h 06m
3 stops
Air Canada Logo
9:30 am - 10:40 pm
BRU
-
BOI
21h 10m
3 stops
$935Air Canada
Sun, Aug 30 - Sun, Sep 6
United Airlines Logo
12:24 pm - 9:00 am
BOI
-
BRU
12h 36m
1 stop
United Airlines Logo
9:30 am - 9:24 pm
BRU
-
BOI
43h 54m
2 stops
$936United Airlines
Thu, Oct 1 - Sat, Oct 10
United Airlines Logo
12:26 pm - 1:15 pm
BOI
-
BRU
16h 49m
2 stops
United Airlines Logo
12:00 pm - 10:33 pm
BRU
-
BOI
18h 33m
2 stops
$948United Airlines
Thu, Oct 1 - Sat, Oct 10
United Airlines Logo
12:26 pm - 9:00 am
BOI
-
BRU
12h 34m
1 stop
United Airlines Logo
12:00 pm - 10:33 pm
BRU
-
BOI
18h 33m
2 stops
$951United Airlines
Sun, Aug 30 - Sun, Sep 6
United Airlines Logo
5:44 pm - 8:00 pm
BOI
-
BRU
18h 16m
2 stops
United Airlines Logo
9:30 am - 10:53 pm
BRU
-
BOI
21h 23m
2 stops
$955United Airlines
Sun, Aug 30 - Sun, Sep 6
United Airlines Logo
12:24 pm - 9:00 am
BOI
-
BRU
12h 36m
1 stop
United Airlines Logo
10:15 am - 10:53 pm
BRU
-
BOI
20h 38m
1 stop
$956United Airlines
Booking Insights

KAYAK's insights & trends for Boise to Belgium flights

Get data-powered insights and trends into flights from Boise to Belgium to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boise to Belgium?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Belgium, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to Belgium is April, when tickets cost $0 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $2,552 and $1,871 respectively.

Good to know

Low season

November

Cheapest flight

$342
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly with an average 51% increase in price.
Flight from Boise to Brussels

FAQs - booking Belgium flights

  • How does KAYAK find such low prices on flights from Boise to Belgium?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to Belgium.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to Belgium?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise to Belgium is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to Belgium?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boise to Belgium with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Belgium?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boise to Belgium up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boise to Belgium

 
Need help choosing which airline to fly with from Boise to Belgium? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10006 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

Baggage claim signs were not updated with my flight information, so I had to guess. The app wasn't updated either.

8.0 ExcellentFlavius, Jul 2026
LAX - BWI
Read more United Airlines reviews

Baggage claim signs were not updated with my flight information, so I had to guess. The app wasn't updated either.

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

I had enough leg room. The check in was smooth. Good food

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

Kayak, the site I went through to book our flight, sent very unclear emails about flight changes. Kayak was incredibly unhelpful in their communications with me about this, promising to work on resolving the issue, and failing to do so. As a result, I needed to get a hotel in Brussels and am now in the process of trying to get reimbursed. On the other hand, the flight personnel in Brussels were very helpful, taking time to look into the issue and determine if they could help. I am very grateful for them and have no problems with the airline. For Kayak, however, I will never use it again and will never recommend it to anyone, and will even discourage people who consider going through that site. My worst experience ever....

Everything you need to know for your flight from Boise to Belgium

Information on your arrival and departure airports