$251 Find Cheap Flights from Denver 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 Denver to Brussels departing on 7/22. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Brussels.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Brussels.
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Cheap Flights from Denver to Brussels (DEN-BRU)

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

Sat, Aug 9 - Sat, Aug 30
Icelandair Logo
4:40 pm - 12:50 pmDEN-BRU
12h 10m1 stop
Icelandair Logo
1:50 pm - 6:55 pmBRU-DEN
13h 05m1 stop
$589Icelandair
Find Deal
Sat, Aug 9 - Sat, Aug 30
Icelandair Logo
4:40 pm - 12:50 pmDEN-BRU
12h 10m1 stop
Icelandair Logo
1:50 pm - 6:55 pmBRU-DEN
13h 05m1 stop
$590Icelandair
Find Deal
Sat, Aug 9 - Sat, Aug 30
Icelandair Logo
4:40 pm - 12:50 pmDEN-BRU
12h 10m1 stop
Icelandair Logo
1:50 pm - 12:30 pmBRU-DEN
30h 40m1 stop
$591Icelandair
Find Deal
Sat, Aug 9 - Sat, Aug 30
Lufthansa Logo
11:59 pm - 7:15 amDEN-BRU
23h 16m2 stops
Lufthansa Logo
10:30 am - 3:35 pmBRU-DEN
13h 05m1 stop
$755Lufthansa
Find Deal
Thu, Sep 11 - Mon, Sep 22
Lufthansa Logo
4:15 pm - 1:00 pmDEN-BRU
12h 45m1 stop
Lufthansa Logo
7:40 pm - 1:45 pmBRU-DEN
26h 05m1 stop
$775Lufthansa
Find Deal
Fri, Aug 29 - Mon, Sep 15
Aer Lingus Logo
7:22 am - 9:40 amDEN-BRU
18h 18m2 stops
Aer Lingus Logo
9:20 pm - 11:25 pmBRU-DEN
34h 05m2 stops
$827Aer Lingus
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Fri, Aug 29 - Mon, Sep 15
Aer Lingus Logo
7:22 am - 9:40 amDEN-BRU
18h 18m2 stops
Aer Lingus Logo
10:20 am - 5:59 pmBRU-DEN
15h 39m1 stop
$846Aer Lingus
Find Deal
Fri, Jul 25 - Fri, Aug 1
United Airlines Logo
9:40 am - 8:00 amDEN-BRU
14h 20m1 stop
United Airlines Logo
12:00 pm - 12:30 amBRU-DEN
20h 30m1 stop
$895United Airlines
Find Deal
Wed, Jul 16 - Wed, Jul 23
United Airlines Logo
9:40 am - 8:00 amDEN-BRU
14h 20m1 stop
United Airlines Logo
7:00 am - 6:20 pmBRU-DEN
19h 20m2 stops
$927United Airlines
Find Deal
Thu, Jul 3 - Mon, Jul 7
Turkish Airlines Logo
6:00 am - 9:20 pmDEN-BRU
31h 20m2 stops
Turkish Airlines Logo
11:15 am - 10:00 pmBRU-DEN
42h 45m2 stops
$1,768Turkish Airlines
Find Deal
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KAYAK's insights & trends for Denver to Brussels flights

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

What’s the cheapest day of the week to fly from Denver to Brussels?

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

If you are looking for a flight deal from Denver to Brussels, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Brussels, Thursday is the cheapest day to fly and Saturday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver 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 Denver to Brussels is January, where tickets cost $635 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,176 and $1,133 respectively.

How far in advance should I book a flight from Denver 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 Denver 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 Denver to Brussels, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Cheapest flight$251
Flight from Denver to Brussels Airport

When to book flights from Denver to Brussels

Are your dates flexible? Find out the best times to travel from Denver 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 Denver to Brussels

  • What is the cheapest flight from Denver to Brussels?

    In the last 3 days, the lowest price for a flight from Denver to Brussels was $251 for a one-way ticket and $589 for a round-trip.

  • Do I need a passport to fly between Denver and Brussels?

    A passport is required to fly from Denver to Brussels.

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

    On your way to Brussels, you’ll fly out from Denver Intl. You’ll be landing in one of Brussels’s 2 airports: Brussels Bruxelles-National or Charleroi Brussels.

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

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

  • Which airline alliances offer flights from Denver to Brussels?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Denver and Brussels, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Denver 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 Denver to Brussels.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Denver 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 Denver 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 Denver with another airline.

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

 
See real verified KAYAK customer reviews for airlines flying from Denver 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 Denver 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 8810 reviews
8.1Crew
7.3Comfort
7.0Entertainment
6.6Food
7.7Boarding
Airline reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

10.0 ExcellentAnonymous, Jun 2025DEN - BOS
Read more United Airlines reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Bad experience; they are not good anymore. They charge too much for luggage seat are so uncomfortable, Flight delays which may miss your next flight, they don’t care if you miss the flight or not. Zero customer services for front desk representatives Istanbul's airport I’m not using this airline any more.

I’ve been traveling for 20 years. I tried Turkish airline for the first time horrible horrible service and it would be my last time even if I get offer for a free ticket, I will not accept it. They have races and the worst Flight attendant

It wasn't good. I didn’t understand. They changed 320 dollars for 2 luggage. My ticket was regular and I paid almost 1200.00 dollars. Why they did charge? I want my money back.. thanks Yılmaz polat

Very punctual, the onboard staff was friendly and correct, the flight was fortunately very calm, the toilets were clean, in short, an excellent experience Thanks

Ordered Vegan meal - it was ok, but not exceptional. Seat ok row 39 middle section aisle. Nearly full flight - crew was busy but they did the best they could. There was a USB A port at the seat. I listened to my own music and only looked at flight information. One nice thing was the connection information was made available in the screen.

Very nice and friendly crew. Boarding system can be improved.

The Etickets had been changed (Why?) without notice ; Hence, that caused troubles when checking in. Not until I contacted my ticket agent and was given correct Etickets could I then check in.

Cleanliness of seats, trays, storage pockets need more attention, but everything else was good.

A great airline, no complaints at all. My experience with Cheap Tickets was very disappointing however. Two hours after purchasing the flight they called to tell me that the ticket price had gone up. I’ve never heard of such a thing. That is called false advertising; I will never use this ticketing service again and will warn all friends to never use it.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

One cold drinks service. No snacks with drinks. No tomato juice or apple juice, coke - only fanta or sprite then ran out of that. Went to gally after meal service no one there / no self service for water at least. Waited 25 min for cabin crew to assist. No recycling of cardboard/ plastic - all put to garbage. Breakfast was a nutrigrain bar and an orange juice. Also I'm sure I booked a flight with checked luggage allowance but had to buy extra when I had my booking confirmation. Movies were good. Chairs comfy. Pillow and blanket and ac vents.

There was no room in the seats, smallest room we've ever had and the food was awful.

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

I dont fly them much anymore. Other carries offere better pricing and better seating options

This flight was of exactly the same high standard as the outbound leg, exactly a week earlier - except that we didn't have any food or drink because it departed at around midnight.

I liked how they looked after couples by providing a row of 4 seats if available.

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

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

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.

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

The United Airlines crew that operated this flight was subpar. They didn’t

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

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