$259 Find Cheap Flights from Boston to Belgium

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Belgium departing on 9/23. 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 Boston 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 Boston 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 Boston to Belgium

Wed, Sep 23 - Wed, Oct 7
LEVEL Logo
10:55 pm - 5:25 pm
BOS
-
BRU
12h 30m
1 stop
LEVEL Logo
10:25 am - 9:05 pm
BRU
-
BOS
16h 40m
1 stop
$488LEVEL
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
10:55 pm - 5:50 pm
BOS
-
BRU
12h 55m
1 stop
Multiple Airlines Logo
8:25 pm - 9:05 pm
BRU
-
BOS
30h 40m
1 stop
$547Multiple Airlines
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
10:55 pm - 5:50 pm
BOS
-
BRU
12h 55m
1 stop
Multiple Airlines Logo
9:20 am - 9:05 pm
BRU
-
BOS
17h 45m
2 stops
$563Multiple Airlines
Wed, Sep 16 - Wed, Sep 30
LEVEL Logo
10:55 pm - 5:25 pm
BOS
-
BRU
12h 30m
1 stop
LEVEL Logo
6:05 pm - 9:05 pm
BRU
-
BOS
33h 00m
1 stop
$569LEVEL
Sun, Oct 4 - Thu, Oct 22
Multiple Airlines Logo
11:35 pm - 4:25 pm
BOS
-
BRU
10h 50m
1 stop
Multiple Airlines Logo
8:45 am - 9:05 pm
BRU
-
BOS
18h 20m
1 stop
$580Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
Multiple Airlines Logo
12:20 pm - 7:40 am
BOS
-
BRU
13h 20m
1 stop
Multiple Airlines Logo
5:35 pm - 9:05 pm
BRU
-
BOS
33h 30m
1 stop
$582Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Scandinavian Airlines Logo
5:40 pm - 11:00 pm
BOS
-
BRU
23h 20m
1 stop
Scandinavian Airlines Logo
10:20 am - 3:35 pm
BRU
-
BOS
11h 15m
1 stop
$587Scandinavian Airlines
Fri, Oct 9 - Tue, Oct 13
Scandinavian Airlines Logo
5:40 pm - 7:50 pm
BOS
-
BRU
20h 10m
1 stop
Scandinavian Airlines Logo
10:20 am - 3:35 pm
BRU
-
BOS
11h 15m
1 stop
$589Scandinavian Airlines
Wed, Oct 21 - Wed, Oct 28
Scandinavian Airlines Logo
5:50 pm - 7:50 pm
BOS
-
BRU
20h 00m
1 stop
Scandinavian Airlines Logo
7:15 pm - 4:40 pm
BRU
-
BOS
26h 25m
1 stop
$591Scandinavian Airlines
Wed, Oct 7 - Wed, Oct 21
Scandinavian Airlines Logo
5:40 pm - 11:00 pm
BOS
-
BRU
23h 20m
1 stop
Scandinavian Airlines Logo
9:10 pm - 3:35 pm
BRU
-
BOS
24h 25m
2 stops
$594Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Boston to Belgium flights

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

What is the cheapest Boston to Belgium flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Belgium from Boston found in the last 5 days was to Brussels, at $903 round-trip. The most popular route is from Boston (BOS) to Brussels Bruxelles-National Airport (BRU), and the cheapest round-trip airline ticket found on this route in the last 5 days was $903.

What is the cheapest time of day to fly to Belgium?

The average price for all round-trip flights from Boston to Belgium depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Belgium is generally at night, when round-trip flights cost $947 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Belgium is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,080.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston 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 Boston to Belgium is October, when tickets cost $318 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $447 and $403 respectively.

How far in advance should I book a flight from Boston to Belgium?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Belgium, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Belgium, you should book around 4 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$259
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Boston to Brussels Airport

FAQs - booking Belgium flights

  • How does KAYAK find such low prices on flights from Boston 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 Boston to Belgium.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston 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 Boston 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 Boston 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 Boston 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 Boston 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 5 airlines serving from Boston to Belgium

 
Need help choosing which airline to fly with from Boston 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 9899 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

10.0 ExcellentNerissa, Jun 2026
BOS - ORD
Read more United Airlines reviews

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

It’s always a great time flying with united airlines.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

We had a wonderful experience with Aer Lingus. The seats were too close for the long trip. The crew was absolutely perfect. They were so caring and thoughtful! My husband did not have a good experience with Air Lingus on the phone when trying to take care of getting better seating because he is disabled and needed a wheelchair prior to the day of our flight! Mariam R. in Boston was so helpful with seating and getting help for my husband. Filip Pytka who works for OCS was extremely helpful! He made sure that we had the lift because my husband could not climb the stairs to get onto the airplane. He took us from the gate all the way down to where we needed to be.

Well, I think we left close to on time. Crew was “eh”.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

Food was very bad. Boarding was disorganized and messy. Crew was friendly

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

Great service on the plane and by ground staff. great prices. I was able to change seats on the plane. The allocated seats cannot be changed when checkin in online. They have to be done at the airport if you check in at the airport or on the plane by asking a stewardess / steward.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

Everything was better but france airlines more better than them

Good leg room for people of all sizes. Pleasent crew.

WE didint profit of food , but for the other think all was good

Spacious and clean aircraft. Good food. Economy will always be squeezed but thankfully I had an aisle seat for stretching exercises. Good selection of movies, particularly Spike Lee joint.

Unfriendly, 8 hours delayed, no lounge access even flying business. Don’t fly Brussels

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

The flight went well, only during the flight from Brussels to Vilnius I would have liked if they had at least given us plain water to drink.

The crew and the flight were excellent, the food might be better!

This was absolutely one of the worst experiences of my life. I came to Europe for a 2 week trip and the airline was probably the most disorganized airline I’ve ever seen in my life. They lost my luggage. I had tracking on it for just such an occasion and told them EXACTLY where it was in the terminal and they somehow failed to get it out on the flight that night, since we were leaving for Switzerland the next day there was no way they would get it to our hotel in time. Seriously, take another airline at any cost. It’s not worth whatever you pay…you’ll end up paying a lot more in the end. My medication is in the bag and I can’t get to it and don’t know how I will get it.

I felt the overall quality of the plane and food service was less than that of their partner airlines, United. An example was wine was served in paper cups in premium economy class. There was no real silverware, napkins or a welcome kit other than a pillow and blanket.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

I had a good experience. I liked being informed about the status of my luggage

The staff could have been friendlier. And Having the flight on time would have been much more convenient.

Old, noisy plane, bad coffee, delayed. Flight attendant was very nice.

We boarded 1.5 hours late. Long wait for the bags when we got to Mexico City. Long wait to get on plane with people mover truck. Friendly staff. They answered all questions as best the could. Such a long, long walk from the plane to customs. Thank you, Michael A. Burris Cambridge, Massachusetts USA

I was forced to check my carry-on bag, which I don't appreciate.

Terrible. Air Canada decided to wait for another flight. Due to the waiting, the weather got worse and connedting flight got cancelled. Air Canada said it was all due to the weather and didn’t pay me for the hotel. Not speaking of 3 hours waiting for my luggage. Never again!

Hard to criticize after the Crowd Strike dilemma. However, when Air Canada says they were "not affected," I expect that is true. My flight delays caused me to miss transportation connections. I understand these things happen, but I don't have to "like it."

Good. Rxception is the Entertainment - movies and TV shows all out of date…

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

Still one of my favorite airlines, but the entertainment options were a bit lacking. It didn't help that my screen didn't work on one of the legs of the trip.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Everything was great! My only critique is 25 euro for wifi is wild, but I get it

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

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

Information on your arrival and departure airports