$230 Find Cheap Flights from Denver to Belgium - 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 from Denver to Belgium departing on 8/31. 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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Book Cheap Denver 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 Denver 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 Denver to Belgium

Mon, Aug 3 - Wed, Aug 19
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 12:40 pm
BRU
-
DEN
30h 50m
1 stop
$616Icelandair
Tue, Aug 18 - Mon, Aug 31
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
$629Icelandair
Tue, Aug 18 - Mon, Aug 31
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
$630Icelandair
Tue, Aug 18 - Mon, Aug 24
Icelandair Logo
8:10 pm - 12:55 pm
DEN
-
BRU
32h 45m
1 stop
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
$633Icelandair
Wed, Aug 19 - Wed, Sep 9
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 12:40 pm
BRU
-
DEN
30h 50m
1 stop
$634Icelandair
Sun, Oct 11 - Sun, Oct 18
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
$643Icelandair
Wed, Nov 25 - Sun, Nov 29
Icelandair Logo
3:40 pm - 11:55 am
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
12:50 pm - 6:05 pm
BRU
-
DEN
13h 15m
1 stop
$651Icelandair
Sun, Sep 6 - Thu, Sep 17
Icelandair Logo
4:40 pm - 12:55 pm
DEN
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 7:00 pm
BRU
-
DEN
13h 10m
1 stop
$655Icelandair
Thu, Sep 3 - Sat, Sep 12
Multiple Airlines Logo
4:40 pm - 10:55 pm
DEN
-
CRL
22h 15m
3 stops
Multiple Airlines Logo
8:45 am - 11:22 am
CRL
-
DEN
34h 37m
2 stops
$817Multiple Airlines
Thu, Sep 3 - Sat, Sep 12
Multiple Airlines Logo
4:40 pm - 10:55 pm
DEN
-
CRL
22h 15m
3 stops
Multiple Airlines Logo
8:45 am - 11:22 am
CRL
-
DEN
34h 37m
2 stops
$870Multiple Airlines
Booking Insights

KAYAK's insights & trends for Denver to Belgium flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver 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 Denver to Belgium is December, when tickets cost $426 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $690 and $640 respectively.

How far in advance should I book a flight from Denver 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 Denver 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 Denver to Belgium, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$230
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Denver to Charleroi Brussels

FAQs - booking Belgium flights

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

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

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

 
Need help choosing which airline to fly with from Denver 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 9896 reviews
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
Airline reviews

I needed internet for critical matters and it never worked.

2.0 MediocreJorge Luis, Jun 2026
DEN - MEX
Read more United Airlines reviews

I needed internet for critical matters and it never worked.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Everything was better but france airlines more better than them

Good leg room for people of all sizes. Pleasent crew.

WE didint profit of food , but for the other think all was good

Spacious and clean aircraft. Good food. Economy will always be squeezed but thankfully I had an aisle seat for stretching exercises. Good selection of movies, particularly Spike Lee joint.

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

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

The flight went well, only during the flight from Brussels to Vilnius I would have liked if they had at least given us plain water to drink.

The crew and the flight were excellent, the food might be better!

This was absolutely one of the worst experiences of my life. I came to Europe for a 2 week trip and the airline was probably the most disorganized airline I’ve ever seen in my life. They lost my luggage. I had tracking on it for just such an occasion and told them EXACTLY where it was in the terminal and they somehow failed to get it out on the flight that night, since we were leaving for Switzerland the next day there was no way they would get it to our hotel in time. Seriously, take another airline at any cost. It’s not worth whatever you pay…you’ll end up paying a lot more in the end. My medication is in the bag and I can’t get to it and don’t know how I will get it.

I felt the overall quality of the plane and food service was less than that of their partner airlines, United. An example was wine was served in paper cups in premium economy class. There was no real silverware, napkins or a welcome kit other than a pillow and blanket.

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

Very good, i got two seats for myself, and was comfortable with the blanket i got

Food is too little (in volume) and too spicy.. There are no snacks in the back of the plane in between meals.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

Excellent staff and flight experience. Would rather that I had upgraded to Premium Economy for extra space, but I will know to do it next time.

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

Sorry, I’m not a fan of United. The seats are just too cramped and uncomfortable if you are traveling very far.

Zero legroom or space in economy. Flight was delayed into Munich causing a missed connecting flight and other missed bookings. :(

A major problem at the Frankfurt terminal. You see your connecting flight is on concourse A and you see signs for A, but when you start to walk out to A, only then do you find A is in another terminal which requires a bus ride, passport control and customs. If you sit around in the first terminal too long, you can miss your flight. We made ours.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

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

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

Late in leaving the US. Late in arriving in UK. 2 plua hous on ground in UK before leaving. Late in arriving in Spain. Didn't get our bags until the next night.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

The perfect jet stream back saved over 1 hour in the air.

The crew on this flight were excellent. They were friendly and attentive. It really made the flight more enjoyable.

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

Information on your arrival and departure airports