$349 Find Cheap Flights from Denver to Belgium - Compare and Save

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Price, demand and travel trends for Denver to Belgium flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Denver to Belgium cheaper or more expensive than last year?

Fares from Denver to Belgium are running about 4% lower than they were around this time last year, averaging $800 round-trip.

What are the cheapest fares from Denver to Belgium right now?

The cheapest fare from Denver to Belgium in the last week was $600 round-trip, to Brussels Bruxelles-National (BRU).

What’s the cheapest month to fly from Denver to Belgium?

November is the cheapest time of year to fly, with average fares of $515. Prices are highest in July, when average flight costs increase to around $1,010.

When is the best time to book flights from Denver to Belgium?

Book your flights 7 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 39% compared to booking last-minute (within 2 weeks of departure).

Which airport in Belgium is the cheapest to fly to from Denver?

All flights from Denver to Belgium arrive at Brussels Bruxelles-National (BRU). On average, round-trip fares are around $795.

What’s the cheapest day to fly from Denver to Belgium?

Saturday tends to be the cheapest day to fly from Denver to Belgium, while Sunday is the most expensive. Fares run about 33% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Denver to Belgium?

Data from the past 12 months shows it's cheapest to fly to Belgium during the afternoon with average prices of $746. The morning is the most expensive time to fly, with average prices of $921.

Key details for Denver to Belgium flights

Low season

February

Cheapest flight

$349
Beat the crowds with an average 48% drop in travelers.
The most popular month to fly with an average 42% increase in travelers.
One-way flight from Denver to Brussels Bruxelles-National Airport

Your Denver to Belgium flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Denver to Belgium?

    Yes. Fares from Denver to Belgium are low right now. As a rule of thumb, a round-trip under $678 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Denver to Belgium?

    Over the past 12 months, round-trip fares from Denver to Belgium have ranged from $678 to $953.

  • What are the main airports serving Belgium?

    Flights to Belgium all arrive at Brussels Bruxelles-National (BRU).

  • What airlines fly nonstop from Denver to Belgium?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Denver to Belgium. One-stop options include:

    • United Airlines
    • Delta
    • Air Canada

  • Which cabin classes are available on flights from Denver to Belgium?

    On flights from Denver to Belgium you can book Economy Class, Premium Economy Class or Business Class.

  • What are some popular landmarks in Belgium?

    KAYAK travelers' favorite landmarks in Belgium include:

    • Grand Place
    • King Baudouin Stadium
    • Place Sainte-Catherine

Your guide to booking Denver to Belgium flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 7 weeks before your trip. KAYAK data shows fares in this window are around 39% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for November when flights are typically cheapest and avoid July when prices are at their highest.
  • Flying on Saturday is usually the cheapest. Flights on Sunday cost about 33% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Brussels, which is the most popular destination in Belgium. From there, it's easy to continue on to other popular destinations such as Bruges, Antwerp and Ghent.

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 10315 reviews
7.7Boarding
7.1Entertainment
6.7Food
8.1Crew
7.3Comfort
Airline reviews

Usual wait for over a half hour for a gate at Ohare. They tell you you'll get there early then sit on the plane and wait almost an hour

6.0 GoodAnonymous, Sep 2026
Read more United Airlines reviews

Usual wait for over a half hour for a gate at Ohare. They tell you you'll get there early then sit on the plane and wait almost an hour

I enjoyed it, again I believe air Canada has better seating options and better drink options

It was fine for the most part. But the volume on the announcements was way too loud, and the cabin temperature was chilly. We had the hardest landing I've ever experienced- I think it hurt my back, and the tires squealed when we touched down.

Upset about cancel to St. John’s and no overnight accomodation

Not a United thing, but late afternoon departures from Denver with thunderstorms is always prone to delays.

Really delayed, no effort to support customers other than “sometimes we run late.”

The flight was excellent. Their was no service as we boarded, the flight attendants spent about 30 minutes just taking and not really caring that the cabin was about 80 degrees and did not offered any beverage to first class passengers or any passenger. The flight from DEN to ONT is not long but not under an hour, we received one drink and bag of chips if you were lucky. I was in first class…. I did leave my hat on the plane and it only took less than five minutes for a United rep to locate and bring it to me.

Flight was late to take off Plane broke down Had to move everyone to another plane Told we weren’t going to LGA but Newark Also told we would be taken to NY But United lied and we ended up at Newark at 2 in the morning Horrible experience. And the experience of trying to get compensation from United is just as bad. They could not care less about their passengers Never again!

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

I needed internet for critical matters and it never worked.

Luggage delayed and delivers 24 hours later … broken. No resolution… no response. We don’t have a suitcase for the rest of our 2 week trip

It was great like always had all my 3 luggage and I got to my destination safely

Everything was better but france airlines more better than them

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.

Movies were old and third rate. Very poor on a seven hour flight. Food was OK but not business class caliber

Although the flight from JFK to Keflavik is not inexpensive, Iceland Air offers nothing but water, no soft drinks, to passengers without a charge. The seats are uncomfortable, there is no leg room, and there was no available internet to purchase.

Was hard to sleep, but other then that everything was good.

We got to the runway and had to go back to terminal to have plane worked on, which is fine, but the 40 minute connecting flight was already gone because of this delay and had to wait 5 hours to get on a different flight and only got a meal voucher which I didn’t see the email until after I had already ordered and paid for food. I feel I should be compensated.

Hard to figure out how to put back the seat, how to get the entertainment, how to upload passport docs. Also, a warning in the airport that food was all for purchase would have been helpful.

Horrible. My dad was recently hospitalized and diagnosed with lymphoma and Icelandair refused to refund flight even though I had a letter from his physician.

The WiFi wasn’t working, so no one could watch any entertainment for 5 hours. The plane also was delayed and did not leave, nor did the staff prioritize those with connecting flights to de-board first. Everyone with a connecting flight to Munich missed their flight by 5 minutes. Then the next flight to Munich was 14 hours later. The airport could not compensate us because the closest hotel was about 2 hours away. This did not seem like the truth. I was not pleased with this traveling experience.

Crew was very friendly. Need lay flat beds! More snacks

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

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.

The tv and remote didn’t work. The plug to charge our phone didn’t work.

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. :(

It was my experience w Kayak that was negative. I’m never using kayak again

Work being done at DIA made it difficult to find BA desk.

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.

More options for your flight from Denver to Belgium

Complete your trip to Belgium with a hotel stay or car rental