$417 Find Cheap Flights from Belgium to Denver - Compare and Save

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

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

Fri, Oct 23 - Sat, Oct 31
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
Icelandair Logo
4:40 pm - 11:55 am
DEN
-
BRU
12h 15m
1 stop
$721Icelandair
Sun, Aug 30 - Sun, Sep 6
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
$750Icelandair
Thu, Aug 20 - Thu, Sep 3
Icelandair Logo
1:50 pm - 12:40 pm
BRU
-
DEN
30h 50m
1 stop
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
$758Icelandair
Mon, Sep 21 - Sun, Oct 4
Multiple Airlines Logo
7:05 am - 12:17 am
BRU
-
DEN
25h 12m
2 stops
Multiple Airlines Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
$763Multiple Airlines
Mon, Aug 17 - Mon, Aug 31
United Airlines Logo
6:20 am - 1:30 pm
BRU
-
DEN
15h 10m
1 stop
United Airlines Logo
8:07 am - 7:25 am
DEN
-
BRU
15h 18m
2 stops
$810United Airlines
Mon, Sep 21 - Sat, Oct 10
United Airlines Logo
8:35 am - 1:35 pm
BRU
-
DEN
13h 00m
1 stop
United Airlines Logo
5:35 pm - 1:15 pm
DEN
-
BRU
11h 40m
1 stop
$811United Airlines
Tue, Dec 22 - Sun, Jan 17
United Airlines Logo
7:00 am - 1:40 pm
BRU
-
DEN
14h 40m
1 stop
United Airlines Logo
9:35 am - 8:05 am
DEN
-
BRU
14h 30m
1 stop
$812United Airlines
Mon, Sep 21 - Sat, Oct 10
British Airways Logo
10:50 am - 10:24 pm
BRU
-
DEN
19h 34m
2 stops
British Airways Logo
6:43 pm - 7:55 pm
DEN
-
BRU
17h 12m
2 stops
$840British Airways
Fri, Jan 15 - Mon, Jan 18
British Airways Logo
9:00 pm - 3:10 pm
BRU
-
DEN
26h 10m
1 stop
British Airways Logo
5:01 pm - 9:00 pm
DEN
-
BRU
19h 59m
1 stop
$858British Airways
Fri, Jan 15 - Mon, Jan 18
British Airways Logo
9:00 pm - 3:10 pm
BRU
-
DEN
26h 10m
1 stop
British Airways Logo
5:01 pm - 9:00 pm
DEN
-
BRU
19h 59m
1 stop
$863British Airways
Booking Insights

KAYAK's insights & trends for flights to Denver

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

What is the cheapest month to fly to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Denver, 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 to Denver is October, where tickets cost $652 on average for return flights. On the other hand, the most expensive months are January and June, where the average cost of tickets from Belgium is $928 and $846 respectively. For one-way flights, the best month to travel is August with an average price of $578.

How far in advance should I book a flight to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Denver, 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, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

February

Cheapest flight

$417
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Brussels Airport to Denver

FAQs - booking Denver flights

  • How far is Denver Intl Airport from central Denver?

    Central Denver is 18 miles away from Denver Intl Airport.

  • What is the name of Denver’s airport?

    There is only 1 airport in Denver, called Denver Intl Airport (DEN). It can also be referred to as Denver or Denver Intl.

  • How does KAYAK find such low prices on flights to Denver?

    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 to Denver.

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

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

    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 Denver 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 to Denver?

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

  • How many direct flights to Denver are there each week?

    Each week there are around 12,372 direct flights from within Belgium to Denver. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Denver

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

Reviews of the top airlines flying from Belgium to Denver

 
See real verified KAYAK customer reviews for airlines flying to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Belgium to Denver. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Denver? 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 10062 reviews
8.1Crew
6.7Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

2.0 MediocreJoseph, Jul 2026
PSP - DEN
Read more United Airlines reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Lufthansa seats were much more comfortable than United. While they had about the same video selection, Lufthansa didn't put advertisements in with the movies like United did. And the Lufthansa food was much better than United.

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

The staff was incredible, very attentive, polite, made you feel like the center of the universe. They even all wrote me a happy birthday card. Truly just an amazing crew, cannot stress it enough.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

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.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Long line with check in at the DIA British Airway counter.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

Everything excellent except for bag drop off. We started at the D area and that was so slow that it was eventually closed just as we were about to go to a station. We then went to F. We got one suitcase checked and then the screen showed that the station was no longer operable. There were long lines everywhere so we had to ask if we could butt in to the next station to finish. Again, this was the only incident, otherwise it was an excellent flying experience

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

We never made it onto this flight due to BA's lackluster organisation.

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

The seat was very uncomfortable. It helped to use the foot rest. Could not sleep because of the seat.

The crew was so unfriendly. Our (the last) section of the plane only got drink service once during an over 9 hour flight. When it come to the main meal service we only got a vegetarian option and where told the chicken option gone. About 30 minutes later I went to the bathroom and lo and behold the whole crew were eating the chicken option.

Traveling to a place near Denver?

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Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver