C$ 421 Find Cheap Flights from Ottawa to Brussels

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Brussels departing on 5/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Brussels

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Brussels, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Brussels, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 945
Overall average: C$ 965
Multiple Airlines
Tue 5/5Tue 12/5
YOW - BRU • 3 stops
Cheapest one-way flights
C$ 421
Multiple Airlines
Tue 5/5
YOW - BRU • 3 stops
Top airlines
Cheapest • from C$ 958 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Brussels!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ottawa to Brussels (YOW-BRU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Brussels 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 Ottawa to Brussels

Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
6:55 a.m. - 5:25 p.m.
YOW
-
BRU
28h 30m
3 stops
Multiple Airlines Logo
5:35 p.m. - 5:35 p.m.
BRU
-
YOW
30h 00m
3 stops
C$ 945Multiple Airlines
Mon, 4 May - Mon, 11 May
United Airlines Logo
10:00 a.m. - 7:15 a.m.
YOW
-
BRU
15h 15m
1 stop
United Airlines Logo
11:10 a.m. - 4:38 p.m.
BRU
-
YOW
11h 28m
1 stop
C$ 958United Airlines
Sat, 2 May - Wed, 13 May
United Airlines Logo
5:25 p.m. - 9:00 a.m.
YOW
-
BRU
33h 35m
1 stop
United Airlines Logo
11:10 a.m. - 4:38 p.m.
BRU
-
YOW
11h 28m
1 stop
C$ 959United Airlines
Sun, 3 May - Sat, 16 May
United Airlines Logo
6:00 a.m. - 7:15 a.m.
YOW
-
BRU
19h 15m
1 stop
United Airlines Logo
11:10 a.m. - 4:38 p.m.
BRU
-
YOW
11h 28m
1 stop
C$ 961United Airlines
Mon, 7 Sep - Mon, 14 Sep
United Airlines Logo
4:00 p.m. - 7:15 a.m.
YOW
-
BRU
33h 15m
2 stops
United Airlines Logo
10:45 a.m. - 9:56 a.m.
BRU
-
YOW
29h 11m
1 stop
C$ 970United Airlines
Thu, 23 Apr - Tue, 19 May
Multiple Airlines Logo
2:40 p.m. - 7:15 a.m.
YOW
-
BRU
10h 35m
1 stop
Multiple Airlines Logo
11:10 a.m. - 9:11 a.m.
BRU
-
YOW
28h 01m
1 stop
C$ 973Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
United Airlines Logo
4:00 p.m. - 7:15 a.m.
YOW
-
BRU
33h 15m
2 stops
United Airlines Logo
12:00 p.m. - 1:10 p.m.
BRU
-
YOW
31h 10m
2 stops
C$ 981United Airlines
Sat, 2 May - Wed, 13 May
United Airlines Logo
6:05 a.m. - 8:55 a.m.
YOW
-
BRU
20h 50m
2 stops
United Airlines Logo
11:10 a.m. - 11:54 p.m.
BRU
-
YOW
18h 44m
2 stops
C$ 985United Airlines
Mon, 4 May - Mon, 11 May
Multiple Airlines Logo
6:55 a.m. - 7:10 p.m.
YOW
-
BRU
30h 15m
2 stops
Multiple Airlines Logo
5:20 p.m. - 12:20 a.m.
BRU
-
YOW
37h 00m
3 stops
C$ 987Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
9:25 a.m. - 7:10 a.m.
YOW
-
BRU
15h 45m
2 stops
Multiple Airlines Logo
9:40 a.m. - 5:06 p.m.
BRU
-
YOW
13h 26m
1 stop
C$ 1,002Multiple Airlines
Booking Insights

KAYAK's insights & trends for Ottawa to Brussels flights

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

What is the cheapest month to fly from Ottawa to Brussels?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Brussels, 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 Ottawa to Brussels is September, where tickets cost C$ 793 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is C$ 1,251 and C$ 1,213 respectively.

How far in advance should I book a flight from Ottawa to Brussels?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to Brussels, 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 Ottawa to Brussels, you should book around 5 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Cheapest flightC$ 421
Flight from Ottawa to Brussels Airport

When to book flights from Ottawa to Brussels

Are your dates flexible? Find out the best times to travel from Ottawa to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ottawa to Brussels

  • What is the cheapest flight from Ottawa to Brussels?

    In the last 3 days, the lowest price for a flight from Ottawa to Brussels was C$ 421 for a one-way ticket and C$ 945 for a round-trip.

  • Which airports will I be using when flying from Ottawa to Brussels?

    Ottawa is served by only 1 airport and there are 2 airports in Brussels. You will leave Ottawa from Ottawa and you will be arriving in Brussels at one of these airports: Brussels Bruxelles-National or Charleroi Brussels.

  • Which aircraft models fly most regularly from Ottawa to Brussels?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ottawa to Brussels?

    Star Alliance is the only airline alliance operating flights between Ottawa and Brussels.

  • How does KAYAK find such low prices on flights from Ottawa to Brussels?

    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 Ottawa to Brussels.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Ottawa 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 Ottawa to Brussels?

    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 to Brussels with an airline and back to Ottawa with another airline.

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

    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 to Brussels from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from Ottawa to Brussels

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Brussels. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa to Brussels? 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 9463 reviews
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

2.0 MediocreMary Ann, Mar 2026
YYZ - EWR
Read more United Airlines reviews

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.

Flight attendants had a little attitude. Food tastes no good.

From pre boarding to flight attendant, crew and baggage handler, excellent. Didn’t lost my luggage like West jet.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

Reliable, nice crew, I fly often on that flight and I like it all.

l really enjoy very much the flight was very pleasant

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

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

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

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.

My flight was delayed more than once, but Air Canada updated us regularly. Friends on other airlines had much worse experiences.

By modern air travel standards, our 15-hour flight to Delhi was very nice. Quiet-ish, straightforward, good service, okay seats, etc. All good.

Again, it was delayed and then our connecting aircraft was very cold.

It was very cold in the beginning; then I asked stewardess to do something about that, and she did something, so for the rest of the flight the temperature was closer to normal. It is typical: by some reason the pilots or whoever is in charge make the cod in the cabin unbearable. The seat is better than on WestJet or Flair, but is is very tight. No leg room.

Delayed for 15 min due to maintenance. We were asked to wait to board as a family, but took longer than if we were not asked anything.

Had to cancel the flight because there was a 14 hour layover before the flight. Unacceptable.

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

Terrible, luggage’s with b/p and diabetes meds including insulin and ozempic. I’ve in them had dissolved and rendered useless

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

I travelled in Business class for the first time and wish I could do that again.

Everything you need to know for your flight from Ottawa to Brussels

Information on your arrival and departure airports