Find Cheap Flights from Illinois to Denver International

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Fri 2/23
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Book cheap flights from Illinois to Denver International (round-trip)

Airports
Origin
Chicago
$83
only
$83
Destination
Denver
$83
only
$83
Tue, Mar 13
ORD
DEN
2h 44m
Tue, Mar 20
DEN
ORD
2h 19m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 6
ORD
DEN
2h 47m
Tue, Mar 13
DEN
ORD
2h 19m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Mediocre 3.0

This flight was canceled because my initial flight was canceled by united and then I could not take the rebooked flight so I could not keep the seats together with the travellers I was with and then was placed in the back of the plane. When my flight was canceled initially no one informed me that my return ticket would be canceled which I specifically asked about. I hope never to fly united again. The day to day staff at ohare and on flight were good and courteous.

ORD
DEN
Excellent 8.6

I will try to avoid Ohare in the future. Long wait to take off. Had to RUN to make the connection. Again.

ORD
DEN
Excellent 8.3

It was on time.

ORD
DEN
Mediocre 2.0

Flight attendants were inconsiderate and rude about using the lavatory. Boarding process felt disorganized and chaotic and the planed ended up needing maintenance. Additionally the smell of gasoline as the flight was taking off seems like it's actually a serious health risk no one is addressing.

ORD
DEN
Okay 5.6

The boarding process is horrible. You have to stand in lines that disrupt the other people trying to navigate through the airport.

Mon, Feb 26
ORD
DEN
2h 42m
Sat, Mar 3
DEN
ORD
2h 31m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 43 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
DEN
Good 7.6

3rd flight in two weeks suck sitting next to a morbidly obese person. They should be forced to purchase two seats.

ORD
DEN
Mediocre 2.0

Missed that flight because my finair was delayed at Helsinki

ORD
DEN
Mediocre 2.0

Missed the flight. Money was not refunded.

Nothing

ORD
DEN
Okay 5.6

The departure time. This left enough time to get to the airport and go through security without rushing!

Sitting in the middle Paying for luggage ( I wish Southwest flew out of ORD)

ORD
DEN
Mediocre 2.0

Nothing. AA is the worst airline. Period.

Rude flight attendants, delayed flight (as always), just AWFUL.

Tue, Feb 27
ORD
DEN
2h 44m
Tue, Mar 13
DEN
ORD
2h 35m
Trip: 14 days
5.4OkayShow reviews
Overall 5.4 Okay
Based on 267 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
DEN
Okay 5.0

$45.00 for a bag is rediculous.

ORD
DEN
Good 7.6

No muss, no fuss. Efficient and friendly crew. Flight was on time and we knew there would be extra charges for carry on baggage and food/drink beforehand.

Seats did not recline. Tray tables were small. Under seat storage was limited and an average backpack barely fits.

ORD
DEN
Okay 4.0

We were delayed by 1hr and 45 min because a flight atttendant was not at the airport.

ORD
DEN
Okay 5.0

Fast boarding and that's the only good quality. No refreshments or snacks offered without a price tag included. Seats don't recline. Uncomfortable hard seats without any head rests for Support. Small tray tables that won't hold a laptop or drink.

It's been 45+ minutes after landing that we have been stuck on the runway unable to dock the plane due to some delays. How Terrible is it that the pilot gets on the radio to say he has no updates or much information to give! People are antsy, children crying and this delays all passengers with other accommodations. Seems like there's no communication or organization from Frontier at all!!'

ORD
DEN
Mediocre 2.6

Getting off the plane

Being in the plane

Wed, Mar 7
ORD
DEN
2h 49m
Tue, Mar 13
DEN
ORD
2h 26m
Trip: 6 days
5.1OkayShow reviews
Overall 5.1 Okay
Based on 317 reviews
Overall
5.7
Boarding
6.0
Comfort
5.3
Crew
6.4
Entertainment
4.5
Food
4.6
ORD
DEN
Excellent 8.0

Staff was excellent! Very attentive and accommodating. They care about their passengers!

The seats were so close together near the back of the plane that we could not put our laptop on the tray in front of us. Also the seats did not recline!

ORD
DEN
Excellent 8.6

Everything was fine, except flight was very late.

Very late. No good reason given.

ORD
DEN
Okay 4.6

Cheap, on time, convenient flight time

C'mon....charging 3.00 for ice water? Ridiculous!

ORD
DEN
Mediocre 3.3

I think charging for water is absurd.

ORD
DEN
Excellent 10.0

Courtesy for fly attendee the time

Tue, Feb 27
ORD
DEN
2h 44m
Tue, Mar 6
DEN
ORD
2h 31m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 24
ORD
DEN
2h 40m
Tue, May 1
DEN
ORD
2h 21m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

It was on time.

ORD
DEN
Good 7.6

internet & movies intermittently worked

ORD
DEN
Excellent 8.3

Flight left the gate on time.

ORD
DEN
Mediocre 2.0

I want to clarify that I boough tiquests with Lufthansa not with United... and I had to travel United most of the time to Africa and Bach to the USA... united socks terrible ... bad food and old plain to cross the Atlantic... besides the service and the bad actitude of the employees... when I travel international I want only Lufthansa. So, kayak you tricked me ....horribly!

ORD
DEN
Good 7.6

Everybody was very nice and the woman at the gate was very efficient at getting everyone assigned and through and up to date.

Quarters were just very cramped. The seat wasn't quite padded enough so my hips began to hurt.

Tue, Feb 27
ORD
DEN
2h 41m
Fri, Mar 2
DEN
ORD
2h 31m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 43 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
DEN
Okay 4.0

Friendly crew. Due to the apparent regularity of excessively delayed American Airlines flights, they had the staff at O'hare bring a cart filled with cheap canned juice and Diet Soda to lessen the blow of their consistently delayed flights.

Like every other American Airlines flight I've ever been on, it was delayed. Including the American flight from Denver to Chicago. We pay entirely too much money to these airlines for them to deliver such painfully mediocre service and consistently delayed flights. I recommend that this airline do a SERIOUS audit of their Preventative Maintenance/Service division across their hubs. If I fly American, I would bet my entire checking account that the plane will be delayed well over 2 hours.

ORD
DEN
Good 6.0

Flight was on time through United since we had to be rescheduled from our original flight with American.

ORD
DEN
Mediocre 2.0

Nothing. AA is the worst airline. Period.

Rude flight attendants, delayed flight (as always), just AWFUL.

ORD
DEN
Excellent 8.0

Flight not entirely sold out. So they let my 14 month grandson have an empty seat between my daughter and I. That was a great gift since he doesn't sleep and is jumping and crawling all over the place. And I'm sure the other passengers were breathing sighs of relief!! Also super smooth landing and nice flight attendants.

Flying with an active 14 month old toddler boy and of his "stuff" is nothing less than anxiety provoking. Not much the airline can do..

ORD
DEN
Mediocre 2.0

Missed that flight because my finair was delayed at Helsinki

Wed, Apr 25
ORD
DEN
2h 40m
Tue, May 1
DEN
ORD
2h 21m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

It was on time.

ORD
DEN
Excellent 8.6

I will try to avoid Ohare in the future. Long wait to take off. Had to RUN to make the connection. Again.

ORD
DEN
Mediocre 2.0

Flight attendants were inconsiderate and rude about using the lavatory. Boarding process felt disorganized and chaotic and the planed ended up needing maintenance. Additionally the smell of gasoline as the flight was taking off seems like it's actually a serious health risk no one is addressing.

ORD
DEN
Mediocre 2.0

I want to clarify that I boough tiquests with Lufthansa not with United... and I had to travel United most of the time to Africa and Bach to the USA... united socks terrible ... bad food and old plain to cross the Atlantic... besides the service and the bad actitude of the employees... when I travel international I want only Lufthansa. So, kayak you tricked me ....horribly!

ORD
DEN
Good 7.6

internet & movies intermittently worked

Wed, Mar 7
ORD
DEN
2h 43m
Tue, Mar 13
DEN
ORD
2h 35m
Trip: 6 days
5.4OkayShow reviews
Overall 5.4 Okay
Based on 267 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
DEN
Mediocre 2.0

We got delayed because the plane broke down. Everyone else got $100 credit, but I didn't because I booked through Kayak. Could you please give me the credit?

ORD
DEN
Good 7.6

No muss, no fuss. Efficient and friendly crew. Flight was on time and we knew there would be extra charges for carry on baggage and food/drink beforehand.

Seats did not recline. Tray tables were small. Under seat storage was limited and an average backpack barely fits.

ORD
DEN
Mediocre 2.0

The flight was delayed

ORD
DEN
Excellent 10.0

It was very good! I liked it.

ORD
DEN
Mediocre 2.0

Airline did not let us fly 45 min prior to the departing time, we were a party of 10 people; half of us checked in online and had payed baggage fees online but when ww got to the counter airline assosiate said we did not check in. Not only dod we loose our tickets but also the money for the fees we had already payed for. I had an uderstandong that the gates closed 10 min prior not 45. We had to fly becuase we had an emergency and this inconvinience just made our experince horrible. Defenetly dissapointed.

Wed, Mar 28
ORD
DEN
2h 49m
Tue, Apr 3
DEN
ORD
2h 26m
Trip: 7 days
5.1OkayShow reviews
Overall 5.1 Okay
Based on 317 reviews
Overall
5.7
Boarding
6.0
Comfort
5.3
Crew
6.4
Entertainment
4.5
Food
4.6
ORD
DEN
Excellent 9.3

I told the attendant that it was my friend's birthday and she sang happy birthday to my friend over the intercom. I'm sad that I didn't take the attendant's name...she was awesome!! Lively, funny and pleasant! She made our trip worthwhile, my friend posted the experience on FB!

ORD
DEN
Mediocre 2.0

I like nothing about it and the customer service sucked

I hated everything about spirit I was waiting at my gate for about an hour until they announced all last minute that our gate had changed and the flight was boarding when I went over to the new gate there was no one there and the flight had left! 8 people experienced the same thing and missed their flight. The manager who came to save us was rude and did absolutely nothing about it. I had to find another flight on my own and pay extra and reschedule my car rental and hotel reservations. By far the worst experience I've had at the airport please don't be cheap and think you are saving with spirit, they are a headache and worst service ever!!

ORD
DEN
Excellent 8.6

Everything was fine, except flight was very late.

Very late. No good reason given.

ORD
DEN
Mediocre 2.0

I was unable to catch my flight because of Spirit's unreasonable polocies. On paper it seems like a good airline, but in practice there's a lot of dissapointment.

ORD
DEN
Okay 4.6

Cheap, on time, convenient flight time

C'mon....charging 3.00 for ice water? Ridiculous!

Mon, Feb 26
ORD
DEN
2h 42m
Tue, Mar 6
DEN
ORD
2h 39m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 28
ORD
DEN
2h 42m
Thu, Mar 1
DEN
ORD
2h 34m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 43 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
DEN
Mediocre 2.0

Nothing. AA is the worst airline. Period.

Rude flight attendants, delayed flight (as always), just AWFUL.

ORD
DEN
Mediocre 2.0

Missed that flight because my finair was delayed at Helsinki

ORD
DEN
Good 7.6

3rd flight in two weeks suck sitting next to a morbidly obese person. They should be forced to purchase two seats.

ORD
DEN
Okay 4.0

Friendly crew. Due to the apparent regularity of excessively delayed American Airlines flights, they had the staff at O'hare bring a cart filled with cheap canned juice and Diet Soda to lessen the blow of their consistently delayed flights.

Like every other American Airlines flight I've ever been on, it was delayed. Including the American flight from Denver to Chicago. We pay entirely too much money to these airlines for them to deliver such painfully mediocre service and consistently delayed flights. I recommend that this airline do a SERIOUS audit of their Preventative Maintenance/Service division across their hubs. If I fly American, I would bet my entire checking account that the plane will be delayed well over 2 hours.

ORD
DEN
Excellent 8.0

Flight not entirely sold out. So they let my 14 month grandson have an empty seat between my daughter and I. That was a great gift since he doesn't sleep and is jumping and crawling all over the place. And I'm sure the other passengers were breathing sighs of relief!! Also super smooth landing and nice flight attendants.

Flying with an active 14 month old toddler boy and of his "stuff" is nothing less than anxiety provoking. Not much the airline can do..

Tue, May 1
ORD
DEN
2h 40m
Tue, May 8
DEN
ORD
2h 21m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Good 7.0

Newer planes and pretty comfortable considering tight quarters

Disappointed that my seat assignments were dropped so had to go to gate to get middle seats.

ORD
DEN
Excellent 8.3

It was on time.

ORD
DEN
Okay 4.3

Crew was nice and professional. Bags arrived in tact in the right place and so did I.

The corner cutting is starting to cross a line. I had so little room that my knees touched the seat in front of me and I couldn't grab my bag below the next seat without disturbing the people next to me. I didn't pay to request a certain seat, so I was in the middle seat of the last isle for each flight. The "free" entertainment was ads to purchase entertainment. Obviously they now make you pay a about 20% of your ticket cost to bring a rollaway now.

ORD
DEN
Okay 5.6

The boarding process is horrible. You have to stand in lines that disrupt the other people trying to navigate through the airport.

ORD
DEN
Excellent 8.3

Everyone was very respectful

Sight delay and having to pay for internet

Tue, Mar 13
ORD
DEN
2h 44m
Tue, Mar 20
DEN
ORD
2h 35m
Trip: 8 days
5.4OkayShow reviews
Overall 5.4 Okay
Based on 267 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
DEN
Mediocre 2.6

Getting off the plane

Being in the plane

ORD
DEN
Mediocre 2.0

We got delayed because the plane broke down. Everyone else got $100 credit, but I didn't because I booked through Kayak. Could you please give me the credit?

ORD
DEN
Okay 4.0

We were delayed by 1hr and 45 min because a flight atttendant was not at the airport.

ORD
DEN
Okay 5.0

$45.00 for a bag is rediculous.

ORD
DEN
Good 7.6

No muss, no fuss. Efficient and friendly crew. Flight was on time and we knew there would be extra charges for carry on baggage and food/drink beforehand.

Seats did not recline. Tray tables were small. Under seat storage was limited and an average backpack barely fits.

Tue, Apr 10
ORD
DEN
2h 49m
Tue, Apr 24
DEN
ORD
2h 29m
Trip: 15 days
5.1OkayShow reviews
Overall 5.1 Okay
Based on 317 reviews
Overall
5.7
Boarding
6.0
Comfort
5.3
Crew
6.4
Entertainment
4.5
Food
4.6
ORD
DEN
Excellent 10.0

Courtesy for fly attendee the time

ORD
DEN
Excellent 9.3

I told the attendant that it was my friend's birthday and she sang happy birthday to my friend over the intercom. I'm sad that I didn't take the attendant's name...she was awesome!! Lively, funny and pleasant! She made our trip worthwhile, my friend posted the experience on FB!

ORD
DEN
Mediocre 3.0

Flight delayed 2 hours. Sat on the plane for an hour of that delay.

ORD
DEN
Mediocre 2.0

Spirit Airlines must make all their money on carry-on charges. Although I measured the dimension of my bag, it was slightly outside of fitting in their metal box at check-in, which cost over $50 when it still for in overhead no issues.

ORD
DEN
Excellent 8.0

Staff was excellent! Very attentive and accommodating. They care about their passengers!

The seats were so close together near the back of the plane that we could not put our laptop on the tray in front of us. Also the seats did not recline!

Mon, Mar 5
ORD
DEN
2h 47m
Tue, Mar 6
DEN
ORD
2h 31m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 13
ORD
DEN
2h 45m
Wed, Mar 14
DEN
ORD
2h 39m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 43 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
DEN
Mediocre 2.0

Missed the flight. Money was not refunded.

Nothing

ORD
DEN
Okay 4.0

Friendly crew. Due to the apparent regularity of excessively delayed American Airlines flights, they had the staff at O'hare bring a cart filled with cheap canned juice and Diet Soda to lessen the blow of their consistently delayed flights.

Like every other American Airlines flight I've ever been on, it was delayed. Including the American flight from Denver to Chicago. We pay entirely too much money to these airlines for them to deliver such painfully mediocre service and consistently delayed flights. I recommend that this airline do a SERIOUS audit of their Preventative Maintenance/Service division across their hubs. If I fly American, I would bet my entire checking account that the plane will be delayed well over 2 hours.

ORD
DEN
Good 7.6

3rd flight in two weeks suck sitting next to a morbidly obese person. They should be forced to purchase two seats.

ORD
DEN
Good 6.0

Flight was on time through United since we had to be rescheduled from our original flight with American.

ORD
DEN
Excellent 10.0

Flight crew had a great sense of humor - they were extra friendly while boarding as well, made traveling with AA the best! Boarding was delayed due to previous flight but our pilot even managed to get us to Denver early! Wish I could have this crew everywhere I go!

Wed, May 2
ORD
DEN
2h 40m
Sat, May 5
DEN
ORD
2h 30m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

Flight left the gate on time.

ORD
DEN
Excellent 8.3

Everyone was very respectful

Sight delay and having to pay for internet

ORD
DEN
Mediocre 3.0

This flight was canceled because my initial flight was canceled by united and then I could not take the rebooked flight so I could not keep the seats together with the travellers I was with and then was placed in the back of the plane. When my flight was canceled initially no one informed me that my return ticket would be canceled which I specifically asked about. I hope never to fly united again. The day to day staff at ohare and on flight were good and courteous.

ORD
DEN
Excellent 8.6

I will try to avoid Ohare in the future. Long wait to take off. Had to RUN to make the connection. Again.

ORD
DEN
Excellent 8.3

It was on time.

Wed, Mar 14
ORD
DEN
2h 44m
Tue, Mar 20
DEN
ORD
2h 35m
Trip: 7 days
5.4OkayShow reviews
Overall 5.4 Okay
Based on 267 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
DEN
Mediocre 2.0

Nothing

Everything. The staff kept lying about the fueling issue. They kept blaming the fuel tankers being frozen. They said 3 of them came, however i sat on the window seat and only one tanker came. After being delayed for 2 hrs and 15 minutes, when we got to cruise altitude they asked us for money for water. Are you serious? Also i was told that same plane will depart from Denver to Phoenix. I was told the same thing while in Chicago, during the flight to Denver and in Denver. It turns out everyone knew the flight left already from Denver to Phoenix. Needless to say, I won’t be flying with frontier ever again.

ORD
DEN
Mediocre 2.6

Getting off the plane

Being in the plane

ORD
DEN
Mediocre 2.0

My return flight over the holidays was booked for the incorrect day and time, even though my email confirmation had the correct days.

ORD
DEN
Mediocre 2.0

The flight was delayed

ORD
DEN
Mediocre 2.0

We got delayed because the plane broke down. Everyone else got $100 credit, but I didn't because I booked through Kayak. Could you please give me the credit?

Illinois to Denver International Flight Information

Flights Arrive in Denver International
Flights Depart from Illinois
Flight Price $83
Airlines United, American Airlines, Frontier, Spirit Airlines
*
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