$364 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 9/4. 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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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 Flight Deals 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.

Recent round-trip flight deals from Denver to Brussels

KAYAK's recommended round-trip deals from the most popular airlines that fly from Denver to Brussels.
Discover the best prices for you by selecting your travel dates on KAYAK.
Icelandair Logo
8:10 pm - 12:50 pmDEN-BRU
32h 40m1 stop
Icelandair Logo
1:50 pm - 6:55 pmBRU-DEN
13h 05m1 stop
$640Icelandair
Find Deal
Fri, Sep 5 - Tue, Sep 16
Icelandair Logo
4:40 pm - 12:50 pmDEN-BRU
12h 10m1 stop
Icelandair Logo
1:50 pm - 6:55 pmBRU-DEN
13h 05m1 stop
$650Icelandair
Find Deal
Sun, Sep 7 - Sat, Sep 20
Icelandair Logo
4:40 pm - 12:50 pmDEN-BRU
12h 10m1 stop
Icelandair Logo
1:50 pm - 12:30 pmBRU-DEN
30h 40m1 stop
$652Icelandair
Find Deal
Wed, Aug 27 - Sat, Sep 6
Turkish Airlines Logo
7:50 pm - 5:25 pmDEN-BRU
37h 35m1 stop
Turkish Airlines Logo
7:15 am - 5:55 pmBRU-DEN
18h 40m1 stop
$854Turkish Airlines
Find Deal
Fri, Aug 29 - Sun, Sep 7
Turkish Airlines Logo
7:50 pm - 9:20 pmDEN-BRU
17h 30m1 stop
Turkish Airlines Logo
7:15 am - 5:55 pmBRU-DEN
18h 40m1 stop
$855Turkish Airlines
Find Deal
Thu, Aug 28 - Sun, Sep 7
British Airways Logo
6:35 pm - 7:10 pmDEN-BRU
16h 35m1 stop
British Airways Logo
9:15 pm - 5:39 pmBRU-DEN
28h 24m2 stops
$901British Airways
Find Deal
Fri, Aug 29 - Mon, Sep 15
United Airlines Logo
5:40 pm - 8:00 amDEN-BRU
30h 20m1 stop
United Airlines Logo
1:45 pm - 1:45 pmBRU-DEN
32h 00m1 stop
$1,052United Airlines
Find Deal
Thu, Jul 3 - Mon, Jul 7
British Airways Logo
6:35 pm - 8:25 pmDEN-BRU
17h 50m1 stop
British Airways Logo
9:15 pm - 8:01 pmBRU-DEN
30h 46m2 stops
$1,161British Airways
Find Deal
Sun, Jun 15 - Mon, Jun 30
Lufthansa Logo
5:59 pm - 1:40 pmDEN-BRU
11h 41m1 stop
Lufthansa Logo
12:00 pm - 6:04 pmBRU-DEN
14h 04m1 stop
$1,222Lufthansa
Find Deal
Sun, Jun 15 - Mon, Jul 14
Lufthansa Logo
4:15 pm - 1:00 pmDEN-BRU
12h 45m1 stop
Lufthansa Logo
1:45 pm - 6:35 pmBRU-DEN
12h 50m1 stop
$1,231Lufthansa
Find Deal
Wed, Jun 11 - Sun, Jul 13
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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 $1,169 and $1,150 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$364
Flight from Denver to Charleroi Brussels

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 $364 for a one-way ticket and $640 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.

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 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

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.

8.0 ExcellentMark, Apr 2025DEN - NRT
Read more United Airlines reviews

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

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Plane still had screens for watching movies. Good selection too.

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

Good overall flight. Excellent crew. Food options could be improved.

Vegan food tasted good. Restroom could be kept cleaner. Seat tray table was a bit tilted so food tray kept sliding down a bit. Flight crew can be a little more friendly, caring and approachable. Their faces lacked smiles and tone was stern.

Flight was delayed then we had to redirect for medical emergency during which time we had no information on what is the plan. The connecting flight was also delayed.

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.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Horrible. The flight was delayed by over 3 hours but updates were barely provided. Boarding started 3 hours late then stopped because their system crashed. So now, passengers were standing for 15 minutes in the open waiting to get boarding passes scanned and get on a bus. Duty-free closed around 4-4:30. Only 1 food outlet was open and it was super slow and busy since it was serving passengers from multiple flights. So a number of passengers couldn't buy meals at the terminal. Since the flight was delayed by over 3 hours, we could have been offered snacks on-board. Nothing. The seats barely reclined. In-flight entertainment options were pitiful. Overall, a miserable experience. Never flying on Icelandair ever again. :(

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

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.

Booked through Kayak, couldnt take flight, Kayak punted to Orbiz, Orbiz punted to Aer Lingus, Aer Lingus said sorry about your luck, try Kayak/Orbiz. Terrible customer service collecting air fares and not even offering a voucher when customers cant take flight

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.

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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