$738 Find Cheap Flights from Boise to Belgium - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Price, demand and travel trends for Boise to Belgium flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Boise to Belgium right now?

The cheapest fare from Boise to Belgium in the last week was $738 round-trip, to Brussels Bruxelles-National (BRU).

Which airport in Belgium is the cheapest to fly to from Boise?

All flights from Boise to Belgium arrive at Brussels Bruxelles-National (BRU). On average, round-trip fares are around $720.

What's the cheapest time of day to fly from Boise to Belgium?

Data from the past 12 months shows it's cheapest to fly to Belgium during the morning with average prices of $720. The afternoon is the most expensive time to fly, with average prices of $988.

Key details for Boise to Belgium flights

Low season

May

Cheapest flight

$738
Beat the crowds with an average 85% drop in travelers.
The most popular month to fly with an average 19% increase in travelers.
Round-trip flight from Boise to Brussels Bruxelles-National Airport

Your Boise to Belgium flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Boise to Belgium?

    Fares from Boise to Belgium are around their usual level right now. A round-trip under $696 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Boise to Belgium?

    Over the past 12 months, round-trip fares from Boise to Belgium have ranged from $696 to $988.

  • What airlines fly nonstop from Boise to Belgium?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Boise to Belgium. One-stop options include United Airlines and Delta.

  • Which cabin classes are available on flights from Boise to Belgium?

    On flights from Boise to Belgium you can book Economy Class or Premium Economy Class.

  • What are some popular landmarks in Belgium?

    KAYAK travelers' favorite landmarks in Belgium include:

    • Grand Place
    • King Baudouin Stadium
    • Place Sainte-Catherine
    • Brussels Exhibition Centre

Your guide to booking Boise to Belgium flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for January when flights are typically cheapest and avoid December when prices are at their highest.
  • Flying on Saturday is usually the cheapest. Flights on Tuesday cost about 60% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Brussels, which is the most popular destination in Belgium. From there, it's easy to continue on to other popular destinations such as Bruges, Antwerp and Ghent.

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 10384 reviews
8.1Crew
7.3Comfort
7.1Entertainment
7.7Boarding
6.7Food
Airline reviews

United, from whom we bought this code-shared flight, mid-flight canceled our tickets for the rest of our itinerary, without explanation. After long delay they tried to re-issue the tickets, but Air Canada could not find the re-issue. It finally resolved after escalation to several layers of supervisors.

2.0 MediocreThom, Oct 2026
Read more United Airlines reviews

United, from whom we bought this code-shared flight, mid-flight canceled our tickets for the rest of our itinerary, without explanation. After long delay they tried to re-issue the tickets, but Air Canada could not find the re-issue. It finally resolved after escalation to several layers of supervisors.

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....

More options for your flight from Boise to Belgium

Complete your trip to Belgium with a hotel stay or car rental