ORD - DEN

$81 Find Cheap Flights from Chicago O'Hare Airport to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Denver departing on 4/13. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Denver, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$118
Typical prices: $172-$323
Frontier
Thu 3/5Thu 3/12
ORD - DEN • Non-stop
Cheapest one-way
$81
Typical prices: $84-$173
Frontier
Mon 4/13
ORD - DEN • 1 stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers more legroom for comfort.
Expect long security lines at ORD during peak times.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Denver
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Top airlines
Frontier
Cheapest • from $118 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 16% price drop
July
Most popular
Good to know
Good to know
+1
+1
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+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
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Flight Deals

Cheap Flights from O'Hare Intl to Denver (ORD-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to Denver 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 O'Hare Intl to Denver

Thu, Mar 5 - Thu, Mar 12
Frontier Logo
4:16 pm - 6:23 pm
ORD
-
DEN
3h 07mnonstop
Frontier Logo
6:00 am - 9:43 am
DEN
-
ORD
2h 43mnonstop
$118Frontier
Mon, Apr 20 - Fri, Apr 24
Frontier Logo
10:55 am - 12:58 pm
ORD
-
DEN
3h 03mnonstop
Frontier Logo
6:30 am - 4:53 pm
DEN
-
ORD
9h 23m
1 stop
$119Frontier
Fri, Apr 10 - Sat, Apr 11
Frontier Logo
8:25 am - 6:09 pm
ORD
-
DEN
10h 44m
1 stop
Frontier Logo
9:00 pm - 12:38 am
DEN
-
ORD
2h 38mnonstop
$120Frontier
Fri, Apr 24 - Mon, Apr 27
Multiple Airlines Logo
10:55 am - 12:58 pm
ORD
-
DEN
3h 03mnonstop
Multiple Airlines Logo
9:00 pm - 9:10 am
DEN
-
ORD
11h 10m
1 stop
$121Multiple Airlines
Thu, May 7 - Sun, May 10
Frontier Logo
10:55 am - 12:58 pm
ORD
-
DEN
3h 03mnonstop
Frontier Logo
7:05 pm - 6:47 am
DEN
-
ORD
10h 42m
1 stop
$122Frontier
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
4:28 pm - 11:03 pm
ORD
-
DEN
7h 35m
1 stop
Frontier Logo
6:15 am - 9:50 am
DEN
-
ORD
2h 35mnonstop
$123Frontier
Thu, Mar 12 - Thu, Mar 19
Frontier Logo
10:53 am - 12:52 pm
ORD
-
DEN
2h 59mnonstop
Frontier Logo
6:00 am - 9:43 am
DEN
-
ORD
2h 43mnonstop
$124Frontier
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
6:30 pm - 8:34 pm
ORD
-
DEN
3h 04mnonstop
Frontier Logo
9:19 pm - 12:57 am
DEN
-
ORD
2h 38mnonstop
$125Frontier
Fri, Feb 27 - Fri, Mar 6
Frontier Logo
2:35 pm - 4:44 pm
ORD
-
DEN
3h 09mnonstop
Frontier Logo
9:19 pm - 12:57 am
DEN
-
ORD
2h 38mnonstop
$126Frontier
Fri, Mar 6 - Sun, Mar 8
Frontier Logo
6:30 pm - 8:34 pm
ORD
-
DEN
3h 04mnonstop
Frontier Logo
6:00 am - 9:43 am
DEN
-
ORD
2h 43mnonstop
$127Frontier
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Denver flights

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

Find cheap flights to Denver
Find cheap flights to Denver

Planning a trip from O'Hare Intl to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from Chicago O'Hare Intl Airport to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to Denver departing in March.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Denver?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Denver clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Chicago O'Hare Airport to Denver, look for departures on Saturdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Denver, Thursday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Denver, 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 Chicago O'Hare Intl Airport to Denver is September, where tickets cost $187 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $264 and $256 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Denver, 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 Chicago O'Hare Intl Airport to Denver, you should book around 4 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from O'Hare Intl to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier, United Airlines and ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonJanuary
Cheapest flight$81
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Chicago O'Hare Airport to Denver

When to book flights from O'Hare Intl to Denver

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago O'Hare Airport to Denver flights

  • Can I travel from Chicago O’Hare Airport (ORD) to DEN with a pet?

    Chicago O’Hare Airport (ORD) is pet friendly and ensures that you and your furry friend have the best experience. There are pet relief areas in the departure and arrival airports with cleaning materials. ORD, however, requires you to leash your pet. You can find the pet relief areas inside security in Terminal 3 Rotunda and outside security. You can contact your airline to inquire about their policies regarding traveling with an animal.

  • Where can I eat in ORD?

    You can find various restaurants in the airport to grab a quick meal before your flight. While you can find most restaurants past security, you can find a few before security. To make your traveling experience more interesting, the airport has ensured that you get different local dining options.

  • Where can I stay in DEN?

    You can stay at the Westin Denver International Airport Hotel, situated just a few steps from the main terminal. It is convenient and offers respite to travelers. The hotel provides shuttle services from the airport to the hotel. You can also stay in one of the many hotels within 10 miles of the airport, such as Aloft Denver International Airport, Avid Hotel Denver Airport, Baymont Inn & Suites, and Clarion Hotel Denver Central.

  • Is DEN accessible to people with reduced mobility?

    The airport has partnered with the Hidden Disabilities Sunflower organization, which provides people with disabilities with a green lanyard with sunflowers to signal that they may need special assistance. The parking lots at the airport are accessible and fitted with elevators and ramps.

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Denver?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Denver was $81 for a one-way ticket and $118 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and Denver?

    A passport is not required to fly from Chicago O'Hare Airport to Denver.

  • Which airlines offer Wi-Fi service onboard planes from Chicago O'Hare Airport to Denver?

    American Airlines, JetBlue, Air Canada, and United Airlines offer inflight Wi-Fi service on the Chicago O'Hare Airport to Denver flight route.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to Denver?

    The Airbus A321neo is the aircraft model that flies most regularly on the Chicago O'Hare Airport to Denver flight route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to Denver?

    oneworld, and Star Alliance are the airline alliances operating flights between Chicago O'Hare Airport and Denver, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Chicago O'Hare Airport to Denver?

    There are nonstop flights from Chicago O'Hare Airport to Denver on a daily basis.

  • Which is the best airline for flights from Chicago to Denver, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Denver are Southwest and United Airlines. With an average price for the route of $245 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $277 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to Denver?

    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 Chicago O'Hare Airport to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Chicago O'Hare Airport 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 Chicago O'Hare Airport to Denver?

    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 Denver with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport to Denver?

    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 Denver from Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $128 or less one-way and $208 or less round-trip.
  • The Chicago O’Hare Airport can be accessed using a myriad of transit options. It is easy to get to the airport using the Airport Transit options, taxis, buses, car rental, or train. If you are looking for a fast and convenient way to the airport, we recommend using a taxi.
  • Chicago O’Hare Airport (ORD) is friendly to nursing mothers, offering them a lovely nursing lounge. The rooms are finished and lovely, with a private chair and a sink area giving a personal space for mothers to breastfeed and breast pump. You can find the nursing area in Terminal 3 Rotunda.
  • You can park in the ORD airport-provided parking spaces at a fee for short-term or long-term. You do not have to worry about the safety of your vehicle because the airport ensures security and safety. The Economy Lot G is the cheapest option if you are parking long-term.
  • There are many direct flights serving this route. All the following airlines operate direct flights along this route: American Airlines, Brussels Airlines, Cathay Pacific Finnair, Copa Airlines, Royal Jordanian, Austrian Airlines, Air Canada, Aer Lingus, Qatar Airways, British Airways, Gulf Air, Iberia, and Japan Airlines. You can find an airline that is within your budget and needs.
  • Denver International Airport (DEN) provides a unique and elegant space to improve your traveling experience. Enjoy the amenities and services by the airport before leaving. You can access free Wi-Fi, charging stations, nursing rooms, and an interfaith chapel.

Prefer to fly direct from Chicago O'Hare Airport to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to Denver Intl.
Find which airlines fly direct from Chicago O'Hare Intl Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Denver Intl

Monday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Tuesday

American Airlines, Southwest, United Airlines

American Airlines, Southwest, +1 more

Wednesday

American Airlines, Southwest, United Airlines, +1 more

American Airlines, Southwest, +2 more

Thursday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Friday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Saturday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Sunday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

See more direct flights

Direct returns

Denver Intl to Chicago O'Hare Intl

Monday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Tuesday

American Airlines, Southwest, United Airlines

American Airlines, Southwest, +1 more

Wednesday

American Airlines, Southwest, United Airlines, +1 more

American Airlines, Southwest, +2 more

Thursday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Friday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Saturday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

Sunday

American Airlines, Frontier, Southwest, +1 more

American Airlines, Frontier, +2 more

See more direct flights

Reviews of the top 5 airlines serving from O'Hare Intl to Denver

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from O'Hare Intl to Denver? 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.
8.0
SouthwestOverall score based on 4285 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.6Crew
8.0Comfort
Airline reviews

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

4.0 OkayAnonymous, Feb 2026
BOI - LAS
Read more Southwest reviews

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

Crew in Columbia was not prepared for landing. It was a bit of a disaster and getting bags took forever.

We were upgraded to First Class and it was a great flight

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

My carry on baggage was damaged. Entire trip, I had to carry the baggage. When complained to the boarding crew, they got mad at me and still asked me to valet check in the cabin baggage. Rude boarding crew!!!

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

No included food for a 5 hour flight and the entertainment was only accessible if you had wired headphones (not provided). Otherwise though, great and smooth flying and customer service.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Because of weather and mechanical issues our flight was 4 hours late. The only compensation offered to us was a meal voucher to be used only at Boston Airport and only on the day issued. But by the time it was offered to us all the restaurants were closed, so there was no way to use that offer.

Friendly crew, efficient boarding and flight arrived early. Couldn’t ask for a better experience

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

Everything you need to know for your flight from O'Hare Intl to Denver

Other airlines flying from O'Hare Intl to Denver

Flights from the other most popular airlines that fly from O'Hare Intl to Denver according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.