$205 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 10/13. 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.
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1 adult, Economy

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Cheap Flights from Boston to Belgium

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Brussels
Brussels1 stop$396
Brussels
Brussels1 stop$396

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

Sun, Mar 1 - Mon, Mar 9
United Airlines Logo
6:40 pm - 7:50 amBOS-BRU
31h 10m1 stop
United Airlines Logo
3:45 pm - 3:05 pmBRU-BOS
28h 20m1 stop
$396United Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Iberia Logo
11:00 pm - 5:30 pmBOS-BRU
12h 30m1 stop
Iberia Logo
12:10 pm - 7:50 pmBRU-BOS
13h 40m1 stop
$398Iberia
Find Deal
Mon, Oct 20 - Tue, Nov 4
Aer Lingus Logo
5:30 pm - 9:40 amBOS-BRU
10h 10m1 stop
Aer Lingus Logo
10:15 am - 6:55 pmBRU-BOS
14h 40m1 stop
$405Aer Lingus
Find Deal
Sun, Oct 26 - Wed, Nov 5
British Airways Logo
7:55 pm - 1:50 pmBOS-BRU
12h 55m1 stop
British Airways Logo
11:50 am - 7:45 pmBRU-BOS
13h 55m1 stop
$408British Airways
Find Deal
Thu, Mar 5 - Mon, Mar 30
Icelandair Logo
7:50 pm - 11:55 amBOS-BRU
10h 05m1 stop
Icelandair Logo
1:50 pm - 6:50 pmBRU-BOS
11h 00m1 stop
$409Icelandair
Find Deal
Thu, Oct 23 - Thu, Nov 6
Icelandair Logo
8:50 pm - 12:50 pmBOS-BRU
10h 00m1 stop
Icelandair Logo
12:50 pm - 5:50 pmBRU-BOS
11h 00m1 stop
$417Icelandair
Find Deal
Sat, Oct 18 - Fri, Oct 31
Aer Lingus Logo
5:30 pm - 9:40 amBOS-BRU
10h 10m1 stop
Aer Lingus Logo
10:15 am - 7:55 pmBRU-BOS
14h 40m1 stop
$418Aer Lingus
Find Deal
Wed, Oct 15 - Sun, Oct 19
Brussels Airlines Logo
3:15 pm - 3:15 pmBOS-BRU
18h 00m2 stops
Brussels Airlines Logo
12:45 pm - 5:40 pmBRU-BOS
10h 55m1 stop
$434Brussels Airlines
Find Deal
Fri, Nov 28 - Fri, Dec 5
Brussels Airlines Logo
3:40 pm - 12:15 pmBOS-BRU
14h 35m2 stops
Brussels Airlines Logo
10:00 am - 2:52 pmBRU-BOS
10h 52m1 stop
$444Brussels Airlines
Find Deal
Sun, Oct 26 - Mon, Nov 3
British Airways Logo
7:55 pm - 1:50 pmBOS-BRU
12h 55m1 stop
British Airways Logo
3:00 pm - 9:55 pmBRU-BOS
12h 55m1 stop
$458British Airways
Find Deal
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 72 hours was to Brussels, at $951 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 72 hours was $951.

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 September, when tickets cost $520 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $733 and $723 respectively.

What’s the cheapest day of the week to fly from Boston to Belgium?

The average price of all round-trip flights from Boston to Belgium clicked on KAYAK for each day over the last 12 months.

When flying from Boston to Belgium, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

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 3 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$205
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 10% increase in price.
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.

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

    The cheapest time of day to fly to Belgium is generally in the morning, when round-trip flights cost $632 on average. Morning departures are around 40% 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 $1,134.

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 8926 reviews
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
7.3Comfort
Airline reviews

Terrible. They wouldn't allow me on my flight on the 14th..

2.0 MediocreJulian, Sep 2025DEN - DRO
Read more United Airlines reviews

Terrible. They wouldn't allow me on my flight on the 14th..

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

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

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

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

It was really good because the employees were very nice and fun to talk to. The entertainment was nice because they had plenty of movies to watch.

Wonderful experience from start to finish. Extremely nice flight staff and much better food than other airlines I have used. Arrived right on time.

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

The flight from Cincinnati to Philadelphia was satisfactory and uneventful.

All of my Aer Lingus flights were delayed. The seat I purchased with extra leg room was exactly the same as my previous seat that was free. I would appreciate my money back.

Horrible. I had to wait in Dublin for 4 hours for the next connecting flight which took my to London and than i had to wait 3 hours for the flight to Dusseldorf

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

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.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

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

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