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Find cheap flights from Denver to Belleville from $39

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 Belleville departing on 6/1. 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
0 bags
Sat 6/8
Sat 6/15

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Good to know

Low season

January

High season

April

Cheapest flight

$39
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Denver to St. Louis

When to book flights from Denver to Belleville

Are your dates flexible? Find out the best times to travel from Denver to Belleville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Denver to Belleville

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

    When flying out of Denver you’ll be using Denver Intl. Belleville does not have its own airport so you’ll be flying into nearby Lambert-St Louis airport, which is 26.3 mi away.

  • How long does a flight from Denver to Belleville take?

    Direct flights cover the 767 miles separating Denver and Belleville in about 2h 06m.

  • How many flights are there between Denver and Belleville?

    22 direct flights run between Denver and Belleville on a daily basis. On average, there are about 159 departures each week.

  • What’s the cheapest day of the week to fly between Denver and Belleville?

    Consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Saturdays and the most expensive ones on Fridays.

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

    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 Belleville.

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

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

    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 Belleville 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 Belleville?

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

  • Which airlines provide the cheapest flights from Denver to Belleville?

    In the last 72 hours, the cheapest one-way ticket between Denver and Belleville found on KAYAK was with Frontier for $39. Frontier offered a round-trip connection from $57 and Sun Country Air from $185.

See more FAQs

Top tips for finding cheap flights from Denver to Belleville

  • There is no airport in Belleville. Instead, you’ll be flying into St. Louis Lambert Airport when flying between Denver and Belleville.
  • The cheapest flight from Denver to Belleville was found 48 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is September.
See more tips

Top 3 airlines serving Denver to Belleville

 
Need help choosing which airline to fly with from Denver to Belleville? 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 11043 reviews
7.2Comfort
8.1Crew
7.1Entertainment
6.7Food
7.7Boarding
Airline reviews

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

8.0 ExcellentKeith, May 2024DEN - FAT
Read more about United Airlines reviews

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

Too many fees (but that seems to apply to all airlines nowadays)

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Wheelchair assistance was not complete. The person left me at the departure gate without informing the groundstaff of my requirements. I had to walk to the departure counter to ask for help to reach the plane door. The crew informed me that in future they were not allowed to help passengers like me, senior citizen and Wheelchair passenger with placing their carry on bags in the overhead compartments!

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

Seats are way too snug for my hip to knee ratio and the recline on the seat in front of me made my experience worst. My legs had no room at all. Not a plane for people 6 ft or over unless you fly first class.

Delayed for maintenance issue?? Should have been addressed before boarding. Put my bag on an earlier flight, but didn’t ask if I wanted to change to an earlier flight. Arrived to find my bag locked up and no agent to be found when I landed.

The CX617 from HK to BKK was delayed more than 1.5 hours.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Left Denver late, then sat on tarmac 30 min after arrival

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

Bought seats on the flight and they were supposed to be 2 and a jumpseat. Plane clearly changed and it was a regular 3 seat row. Asked for a refund and was denied. If I wanted to sit next to someone else I wouldn't have bought the seats..

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

It’s a cheap airline and I wish if they had better seats.

Seats are cramped and uncomfortable. You have to pay for everything and it is very expensive.

For a busy travel season, everything was clearly marked, correct, and smooth. My favorite travel description is “UNEVENTFUL,” and this trip met the mark!

The flight and crew were fine. When we (several groups) arrived in Norfolk on Sunday we discovered our bags had not arrived. The staff at norfolk airport was less than helpful. Told us our bags wouldn't arrive until Thursday. When asked what happened they said it bags never made it on the plane and it happened all the time. When asked about reimbursement for replacement items the desk agent said we could try to submit receipts online, but they weren't sure we would be reimbursed. I understand this is a low cost airline, but this was really beyond poor customer service.

Book cheap flights from Denver to Belleville

Recent round-trip flight deals

8/6Tue
nonstopFrontier
2h 06mDEN-STL
8/10Sat
nonstopFrontier
2h 28mSTL-DEN
$57
5/29Wed
nonstopFrontier
2h 10mDEN-STL
6/8Sat
nonstopFrontier
2h 30mSTL-DEN
$64
6/1Sat
1 stop
24h 43mDEN-STL
6/8Sat
nonstop
2h 30mSTL-DEN
$140
7/3Wed
nonstop
2h 09mDEN-STL
7/5Fri
1 stop
8h 25mSTL-DEN
$152
5/24Fri
1 stopSun Country Air
24h 00mDEN-STL
5/26Sun
1 stopSun Country Air
15h 40mSTL-DEN
$185
6/3Mon
1 stopDelta
7h 20mDEN-STL
6/11Tue
1 stopDelta
4h 16mSTL-DEN
$196
5/25Sat
1 stopSun Country Air
22h 20mDEN-STL
6/2Sun
1 stopSun Country Air
22h 45mSTL-DEN
$205
7/2Tue
1 stopDelta
7h 02mDEN-STL
7/2Tue
1 stopDelta
5h 26mSTL-DEN
$208
8/23Fri
1 stopAmerican Airlines
8h 35mDEN-STL
8/28Wed
1 stopAmerican Airlines
7h 18mSTL-DEN
$220
8/17Sat
1 stopAmerican Airlines
5h 15mDEN-STL
8/18Sun
1 stopAmerican Airlines
6h 57mSTL-DEN
$241

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Recent one-way flight deals

6/1Sat
nonstopFrontier
2h 10mDEN-STL
$39
7/5Fri
nonstopFrontier
2h 11mDEN-STL
$49
7/4Thu
1 stopSun Country Air
14h 39mDEN-STL
$91
6/10Mon
1 stopDelta
7h 15mDEN-STL
$98
6/10Mon
1 stopAmerican Airlines
7h 01mDEN-STL
$117
7/5Fri
1 stopSun Country Air
16h 50mDEN-STL
$118
5/23Thu
1 stopAmerican Airlines
5h 29mDEN-STL
$124
5/22Wed
1 stopDelta
7h 24mDEN-STL
$136
6/30Sun
nonstopUnited Airlines
2h 09mDEN-STL
$139
8/6Tue
2 stopsUnited Airlines
17h 39mDEN-STL
$232

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Last minute flights from Denver to Belleville

Last minute flight, train and bus deals

5/14Tue
nonstopFrontier
2h 05mDEN-STL
5/15Wed
nonstopFrontier
2h 31mSTL-DEN
$144
5/14Tue
multi-stopDelta
7h 35mDEN-STL
6/12Wed
multi-stopDelta
5h 53mSTL-DEN
$246
5/14Tue
nonstopUnited Airlines
2h 04mDEN-STL
5/15Wed
multi-stopUnited Airlines
6h 03mSTL-DEN
$377
5/14Tue
nonstopUnited Airlines
2h 04mDEN-STL
5/18Sat
multi-stopUnited Airlines
5h 18mSTL-DEN
$471
5/13Mon
multi-stop
26h 25mDEN-STL
5/18Sat
multi-stop
23h 23mSTL-DEN
$522
5/13Mon
multi-stop
26h 25mDEN-STL
5/18Sat
multi-stop
21h 25mSTL-DEN
$538
5/11Sat
multi-stopAmerican Airlines
8h 54mDEN-STL
5/16Thu
multi-stopAmerican Airlines
7h 46mSTL-DEN
$593
5/10Fri
multi-stopAmerican Airlines
7h 12mDEN-STL
5/13Mon
multi-stopAmerican Airlines
7h 46mSTL-DEN
$624
5/13Mon
multi-stopAlaska Airlines
18h 51mDEN-STL
5/18Sat
multi-stopAlaska Airlines
15h 15mSTL-DEN
$794
5/13Mon
multi-stopAlaska Airlines
18h 51mDEN-STL
5/17Fri
multi-stopAlaska Airlines
24h 30mSTL-DEN
$844

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Flights to Belleville

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