Cheap Flights from Chicago to Denver International from 101 €

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Flight deals from Chicago to Denver International

Looking for a cheap last-minute deal or the best return flight from Chicago to Denver International? Find the lowest prices on one-way and return tickets right here.

Denver.101 € per passenger.Departing Thu, 8 May, returning Mon, 12 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Thu, 8 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 12 May, arriving in Chicago Midway.Price includes taxes and charges.From 101 €, select.

Denver.106 € per passenger.Departing Thu, 17 Apr, returning Sat, 19 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Thu, 17 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 19 Apr, arriving in Chicago Midway.Price includes taxes and charges.From 106 €, select.

Denver.111 € per passenger.Departing Tue, 3 Jun, returning Sat, 7 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Tue, 3 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 7 Jun, arriving in Chicago O'Hare International.Price includes taxes and charges.From 111 €, select.

Denver.111 € per passenger.Departing Wed, 9 Jul, returning Sat, 12 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Wed, 9 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 12 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From 111 €, select.

Denver.111 € per passenger.Departing Wed, 28 May, returning Wed, 4 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Wed, 28 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 4 Jun, arriving in Chicago O'Hare International.Price includes taxes and charges.From 111 €, select.

Denver.115 € per passenger.Departing Sat, 28 Jun, returning Sat, 5 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Sat, 28 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 5 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From 115 €, select.

Denver.127 € per passenger.Departing Sat, 2 Aug, returning Sat, 9 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Sat, 2 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 9 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From 127 €, select.

Denver.139 € per passenger.Departing Fri, 18 Apr, returning Sun, 25 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Fri, 18 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 25 May, arriving in Chicago Midway.Price includes taxes and charges.From 139 €, select.

Find the cheapest month to fly from Chicago to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Denver International flights are currently cheapest in May.

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Direct flights from Chicago to Denver International

Chicago to Denver International: Alternative routes

Compare routes from Chicago to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Chicago to Denver: Flight information

The things to know before you go.

Cheapest flight found	101 €
Cheapest month to fly	May
Average flight time	2 hrs, 45 mins
Most popular airline	Southwest Airlines
Average flights per week	470

Finding cheap flights from Chicago to Denver International: Frequently asked questions

How much are return flights from Chicago to Denver International?

The best price we found for a return flight from Chicago to Denver International is 101 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Chicago to Denver International?

2 hours and 45 minutes is the average flight time from Chicago to Denver International.

Which airlines fly direct from Chicago to Denver International?

Southwest Airlines, American Airlines and Iberia fly direct from Chicago to Denver International.

How many flights are there a week from Chicago to Denver International?

As of March 2025, there are 470 flights per week flying from Chicago to Denver International.

When is the cheapest time to fly from Chicago to Denver International?

The cheapest month to fly from Chicago to Denver International is usually March 2025.

Which upcoming date is cheapest to fly from Chicago to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Denver International Airport on Thursday, 8 May 2025.

Can I get a direct flight from Chicago to Denver International Airport?

Yes – the average flight time is 2 hours and 45 minutes.

How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Chicago to Denver International with?

The cheapest airline that flies to Denver International is Frontier Airlines .

Travelling from Chicago to Denver International Airport (DEN): what you need to know

All great adventures start at one of Chicago's main airports, O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW). Check out your options for booking a flight from Chicago to Denver International Airport (DEN) departing from either of these.
Expect to be in the air for 2 hours 44 minutes. That's the average journey time for a direct flight from Chicago to Denver International Airport.
The timezone in Denver is UTC-6, which is 1 hour behind Chicago. Denver International Airport is located in Denver.
The most popular route is from O'Hare International Airport (ORD) to Denver International Airport (DEN), with 313 direct services every week. If you want to get going as soon as possible, the earliest flight from ORD to DEN is the 05:00 United service. If you prefer travelling later, the final departure is at 22:55 with Frontier Airlines.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Make sure you're at the airport on time to board your flight from Chicago to DEN.
Peak months like August or holiday periods such as spring break and Christmas will mean longer waits at check-in and security. Play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a smart move.

Airports in Chicago

O'Hare International Airport (ORD)

You can take a direct flight from Chicago to Denver International Airport (DEN) leaving from O'Hare International Airport (ORD).
Top airlines that have direct flights from Chicago to Denver International Airport leaving from ORD include:
From the centre of Chicago, ORD is approximately 40 kilometres away. Use navigation apps or check the official airport website to work out the best way to arrive at the terminal.
Searching for a handy hotel close to O'Hare International Airport? If you're catching an early flight from Chicago to Denver International Airport, these stays will have you moments from your check-in counter:

Chicago Midway International Airport (MDW)

Chicago Midway International Airport (MDW) has direct flights from Chicago to Denver International Airport (DEN).
You can pick from a range of airlines offering direct flights from Chicago to DEN departing from MDW. Set off with any of these carriers and travel straight to your destination:
MDW is around 19 kilometres from central Chicago. It takes 21 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 46 minutes.
You're off on holiday, so why not extend it with another night away? Think about staying at one of these accommodation options near Chicago Midway International Airport the day before your flight from Chicago to DEN:

About Denver International Airport (DEN)

Consider checking in to SpringHill Suites Denver Airport after touching down from your flight from Chicago to Denver International Airport. It's not too far from DEN and a comfortable option if you're eager to relax as soon as possible.

Getting from Denver International Airport (DEN) to central Denver

From Denver International Airport, Denver is approximately 40 kilometres away. It takes around 34 minutes to get to the centre driving.
If you're taking public transport, expect a journey time of about 1 hour and 31 minutes.

How to find the cheapest flights from Chicago to Denver International Airport (DEN)

The lowest price we've seen for a one-way ticket from Chicago to Denver International Airport is 46 €. The cheapest price for a return flight is 101 €. Keep in mind fares can change due to availability at the time of booking.
It's a good idea to book 7 months ahead. Flight price data suggests you're more likely to find cheap tickets from Chicago to DEN then.
The cheapest month for tickets from Chicago to Denver International Airport is April. Use the 'Whole month' search feature to find the most affordable day to fly if you're flexible with your departure dates.
Create a Price Alert for cheap tickets from Chicago to DEN. There's no need to check back in every day to see if fares have dropped. We'll update you when the price changes.
Make the most of the filters to find your ideal journey. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Chicago to Denver International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and number of stops.

The best time to fly from Chicago to Denver International Airport (DEN)

July is the busiest month for flights from Chicago to Denver International Airport. To avoid the crowds, travel to Denver in April when things are quieter.
Think about the kind of weather that'll work with your plans for Denver. July is known as the warmest month. Lock in your flights from Chicago to DEN sometime then and you can expect temperatures of between 14ºC and 32ºC.
Search for cheap flights from Chicago to Denver International Airport in January if you like cooler conditions. Temperatures are at their lowest then, ranging between -9ºC and 7ºC on average.

More about Denver

Start your Denver trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from Chicago to Denver International Airport, browse our selection of hotels including:
There are so many things to see and do in this city it can be hard to know where to begin. Denver Art Museum, Union Station and Denver Botanic Gardens are top attractions which should be on any good Denver itinerary.

Complete your Denver trip with a car rental

We use the same magic that helped you find your cheap flight from Chicago to Denver International Airport to track down your ideal ride. Check out our car rentals in Denver and easily compare your options. Plus we give you all the info you need to know, from the most popular car type to the average daily price.