Find Cheap Flights to Denver International (DEN)

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(Round-trip)
Airports
Origin
Seattle
$67
only
$67
Chicago
$67
only
$67
Destination
Denver
$67
only
$67
Tue, Jan 23
ORD
DEN
2h 44m
Sat, Feb 3
DEN
ORD
2h 38m
Trip: 12 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
DEN
Okay 4.0

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

ORD
DEN
Mediocre 2.6

Getting off the plane

Being in the plane

ORD
DEN
Okay 5.0

$45.00 for a bag is rediculous.

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 2.0

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.

Sat, Feb 3
ORD
DEN
2h 44m
Sat, Feb 17
DEN
ORD
2h 17m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 3
ORD
DEN
2h 42m
Tue, Mar 13
DEN
ORD
2h 28m
Trip: 10 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

It was on time.

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
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
Good 7.6

internet & movies intermittently worked

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.

Tue, May 15
ORD
DEN
2h 42m
Tue, May 22
DEN
ORD
2h 37m
Trip: 8 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 42 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
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 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 the flight. Money was not refunded.

Nothing

ORD
DEN
Excellent 9.0

it was fine. flight left on time and the crew was nice.

that you have to pay $100+ for economy plus to get the legroom you used to get for a regular ticket.

ORD
DEN
Good 6.5

The crew was amazing - agreeing to work extra because it was Christmas eve and they wanted us all to get to our destinations for Christmas. They were very gracious and helpful.

We were over an hour late to leave. I understand the reason for the delay because of weather. What I was disappointed in is that the delay was not announced until our actual scheduled time to leave. It meant people coming to pick me up didn't get the change information in a timely manner.

Tue, Jan 30
SEA
DEN
2h 38m
Wed, Feb 7
DEN
SEA
3h 07m
Trip: 9 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Mediocre 2.0

Not a single thing

Staff is rude and incompetent, they way over charged my account for for services that weren’t even available but wasn’t told this until after they charged my card. Seriously considering taking my experience with them to local news outlets so this doesn’t happen to anyone else !!

SEA
DEN
Mediocre 2.0

I was notified of my flight departing Seattle was delayed resulting in it being impossible for me to make my connecting flight in Denver to Philadelphia hence missing an entire 24 hours I could’ve spent with my family and loosing vacation time. Frontier has not done anything to compensate me for the inconvenience.

SEA
DEN
Mediocre 2.0

Nothing positive

I wasn't allowed to board because they closed the flight. I didn't realize you have to pay an additional fee to get your seat assignement to even get on the flight. I've been delayed a full 24hrs. That on top of $40 fee to have my carry on. At this point, my $175 plane ticket has ballooned to almost $245 which is more expensive than other flights where they treat you like a human being. F this company.

SEA
DEN
Mediocre 2.6

hmm

layover nothing was in order staff sucked yall kept moving gate yall could at lest give us a soda for the long rides

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

Mon, Feb 5
ORD
DEN
2h 44m
Sat, Feb 17
DEN
ORD
2h 17m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 31
SEA
DEN
2h 38m
Wed, Feb 7
DEN
SEA
3h 07m
Trip: 8 days
4.9OkayShow reviews
Overall 4.9 Okay
Based on 464 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SEA
DEN
Excellent 8.0

Great flight attendants, amazing landing in Denver.

It was delayed. But I appreciated the meal voucher and voucher for future travel.

SEA
DEN
Mediocre 3.0

Didn't crash

All flights were late, seats were extremely uncomfortable.

SEA
DEN
Mediocre 2.3

Not much

Cost of bags, not understanding person in terminal during boarding, plane seats; I keep saying we will NOT Frontier again. I must have been desperate.

SEA
DEN
Excellent 8.6

boarding/unboarding is painless and enjoyable and attendants are respectfull

snacks and cokes are charged

SEA
DEN
Good 7.3

They had us pay 45 dollars per carry on bag. CARRY ON BAG..... I was very disappointed. Who does this? I guess frontier. Won't be flying with them again.

Tue, Mar 6
ORD
DEN
2h 52m
Tue, Mar 13
DEN
ORD
2h 26m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

Everyone was very respectful

Sight delay and having to pay for internet

ORD
DEN
Good 7.6

internet & movies intermittently worked

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
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 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.

Tue, Feb 6
ORD
DEN
2h 44m
Tue, Feb 27
DEN
ORD
2h 19m
Trip: 22 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 3
ORD
DEN
2h 44m
Wed, Feb 14
DEN
ORD
2h 38m
Trip: 12 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
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 2.0

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
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

What I liked? That the flight ended and I could get off the plane.

They charged to pick seats. They charged to carry on a bag. They charged for any drinks. The seats had NO padding. The seats didn't recline. The gate at O'Hare was dark and dirty. The travelers in my flight would have scared the residents of Mos Eisley.

Sat, Apr 14
ORD
DEN
2h 46m
Sat, Apr 21
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
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

Flight left the gate on time.

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
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
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!

Tue, Feb 13
ORD
DEN
2h 44m
Wed, Feb 28
DEN
ORD
2h 19m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 6
ORD
DEN
2h 44m
Wed, Feb 14
DEN
ORD
2h 38m
Trip: 9 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 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
Excellent 10.0

It was very good! I liked it.

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
Good 6.6

It was cheap. The boarding was smooth. It wasn't overbooked. There was space for my carryon. Crew was nice. Was on time.

No free beverage. Small seats and no leg room. Not happy about the carryon charge but whatever.

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.

Tue, Apr 24
ORD
DEN
2h 33m
Tue, May 1
DEN
ORD
2h 20m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
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
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
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 8.6

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.

Sat, Feb 10
ORD
DEN
2h 44m
Wed, Feb 14
DEN
ORD
2h 38m
Trip: 5 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 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
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
Good 6.6

It was cheap. The boarding was smooth. It wasn't overbooked. There was space for my carryon. Crew was nice. Was on time.

No free beverage. Small seats and no leg room. Not happy about the carryon charge but whatever.

ORD
DEN
Mediocre 2.6

What I liked? That the flight ended and I could get off the plane.

They charged to pick seats. They charged to carry on a bag. They charged for any drinks. The seats had NO padding. The seats didn't recline. The gate at O'Hare was dark and dirty. The travelers in my flight would have scared the residents of Mos Eisley.

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.

Tue, Feb 13
ORD
DEN
2h 44m
Thu, Feb 22
DEN
ORD
2h 19m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 25
ORD
DEN
2h 33m
Tue, May 1
DEN
ORD
2h 23m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 182 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
DEN
Excellent 8.3

Flight left the gate on time.

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

Everyone was very respectful

Sight delay and having to pay for internet

ORD
DEN
Good 7.6

internet & movies intermittently worked

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.

Mon, Feb 12
ORD
DEN
2h 44m
Tue, Feb 13
DEN
ORD
2h 38m
Trip: 2 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
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 2.0

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
Okay 4.0

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

ORD
DEN
Mediocre 2.6

What I liked? That the flight ended and I could get off the plane.

They charged to pick seats. They charged to carry on a bag. They charged for any drinks. The seats had NO padding. The seats didn't recline. The gate at O'Hare was dark and dirty. The travelers in my flight would have scared the residents of Mos Eisley.

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.

Tue, Jan 30
ORD
DEN
2h 45m
Wed, Feb 7
DEN
ORD
2h 38m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 13
ORD
DEN
2h 46m
Wed, Feb 14
DEN
ORD
2h 38m
Trip: 2 days
5.3OkayShow reviews
Overall 5.3 Okay
Based on 264 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
Good 6.6

It was cheap. The boarding was smooth. It wasn't overbooked. There was space for my carryon. Crew was nice. Was on time.

No free beverage. Small seats and no leg room. Not happy about the carryon charge but whatever.

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
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 2.0

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.

United States to Denver International Flight Information

Flights Arrive in Denver International
Flights Depart from United States
Flight Price $67
Airlines Frontier, United, American Airlines
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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