Cheap Flights from Chicago to Denver

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Flight deals from Chicago to Denver

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

Denver.$117 per passenger.Departing Mon, 11 May, returning Thu, 14 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Mon, 11 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Thu, 14 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From $117, select.

Denver.$127 per passenger.Departing Sat, 11 Apr, returning Thu, 16 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Sat, 11 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Thu, 16 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From $127, select.

Denver.$193 per passenger.Departing Wed, 11 Mar, returning Sat, 21 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Wed, 11 Mar, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 21 Mar, arriving in Chicago O'Hare International.Price includes taxes and charges.From $193, select.

Denver.$193 per passenger.Departing Sun, 8 Mar, returning Mon, 16 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Sun, 8 Mar, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 16 Mar, arriving in Chicago O'Hare International.Price includes taxes and charges.From $193, select.

Denver.$204 per passenger.Departing Thu, 30 Apr, returning Sun, 3 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Thu, 30 Apr, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Sun, 3 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From $204, select.

Denver.$252 per passenger.Departing Fri, 10 Apr, returning Tue, 2 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Fri, 10 Apr, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 2 Jun, arriving in Chicago O'Hare International.Price includes taxes and charges.From $252, select.

Denver.$265 per passenger.Departing Sun, 29 Mar, returning Sat, 11 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Sun, 29 Mar, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 11 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From $265, select.

Denver.$272 per passenger.Departing Sat, 25 Apr, returning Sat, 2 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Chicago O'Hare International on Sat, 25 Apr, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Sat, 2 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From $272, select.

Find the cheapest month to fly from Chicago to Denver

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

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Direct flights from Chicago to Denver

Alternative Chicago to Denver routes

Looking for the cheapest, fastest or easiest route from Chicago to Denver? You could fly into the following airports instead.

Chicago to Denver: Flight information

The things to know before you go.

Cheapest flight found	$117
Cheapest month to fly	May
Average flight time	2 hrs, 46 mins
Average flights per week	560

Finding cheap flights from Chicago to Denver: Frequently asked questions

How many airports are there in Denver?

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.

How much are return flights from Chicago to Denver?

The best price we found for a return flight from Chicago to Denver is $117. 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?

2 hours and 46 minutes is the average flight time from Chicago to Denver.

Which airlines fly direct from Chicago to Denver?

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

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

As of February 2026, there are 2,240 flights per week flying from Chicago to Denver.

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

The cheapest month to fly from Chicago to Denver is usually May.

Which is the cheapest airport to fly into in Denver?

If you're flying from Chicago, the cheapest airport near Denver is Denver International – which is 29.9 km away from the centre of Denver. We've found flights into this airport from $117.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Denver on Monday, 11 May 2026.

Can I get a direct flight from Chicago to Denver?

No airlines currently offer direct flights between Chicago and Denver. Most routes have one or more stops.

How can I get the best flight deal from Chicago to Denver?

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 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.

What’s the weather like in Denver?

In February, the average temperature is usually around 0°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.

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

The cheapest airline that flies to Denver is Frontier Airlines .

Flying from Chicago to Denver: what you need to know

Start your travels at one of Chicago's main airports, O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW). Explore your options for booking a flight from Chicago to Denver jetting off from either of these.
When it comes to where you'll disembark, Denver's chief entry point is Denver International Airport (DEN).
Around 2 hours 45 minutes is how long you can expect to be travelling on a direct Chicago to Denver flight.
Denver's timezone is UTC-6, which makes Denver one hour behind Chicago.
The busiest route for flights from Chicago to Denver is from O'Hare International Airport (ORD) to Denver International Airport (DEN). There are 108 weekly services between these two airports. If you'd like to maximise your time on arrival, the earliest flight from ORD to DEN is the 05:00 United Airlines option. If you prefer to travel later, the final departure is at 22:17 with United Airlines.
Give yourself enough time to make your Chicago to Denver flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.
Flying during a popular month such as August? Major public holidays and other high seasons can mean longer lines at check-in and security. Be extra cautious and arrive up to four hours ahead of an international flight and two hours before domestic departures.

How to find the cheapest flights from Chicago to Denver

At the moment, $59 is the best price we've seen for a one-way ticket from Chicago to Denver. The cheapest price for a return flight is $117. Keep in mind fares can change due to availability at the time of booking.
Get cheap Chicago to Denver flights by booking one month ahead. Based on our research, that's the sweet spot for picking up a bargain.
The best month for scoring cheap plane tickets from Chicago to Denver is April. Use the 'Whole month' tool to compare flight prices, then select the dates that offer the biggest savings.
Save time looking for cheap flights from Chicago to Denver by setting up a Price Alert. We'll send you an email or notification through the app when fares go down.
Pick your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your Chicago to Denver flight results by 'Fastest,' 'Best' or 'Cheapest.'

Flying from Chicago

O'Hare International Airport (ORD)

You can get a direct flight from Chicago to Denver taking off from O'Hare International Airport (ORD). Begin your journey at ORD and touch down at Denver International Airport (DEN).
Well-known carriers that offer direct Chicago to Denver plane tickets departing from ORD include:
Travelling from central Chicago to ORD takes about 55 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 26 kilometres in 35 minutes or so, depending on traffic conditions.
Want a leisurely start to your travels? Stay near O'Hare International Airport. Whether you have an early flight from Chicago to Denver or just don't like being rushed, these hotels are ideal:
74.85% of flights that leave from O'Hare International Airport land at their destination on time.
ORD is located at 10000 West O'Hare.

Chicago Midway International Airport (MDW)

You can book a direct flight from Chicago to Denver out of Chicago Midway International Airport (MDW). Nonstop services from MDW will take you to Denver International Airport (DEN).
Southwest Airlines offers direct Chicago to Denver plane tickets from MDW. Book your favourite window (or aisle) seat and reach your destination in one go.
You can get to MDW from the centre of Chicago in about 20 minutes by car, depending on traffic conditions. The journey on public transport will take roughly 45 minutes to cover the 14 kilometres or so.
Want to treat yourself to an extra night away before catching your flight from Chicago to Denver? Unwind in a hotel near Chicago Midway International Airport before your break officially begins. Here's where you can stay:
78% of flights departing Chicago Midway International Airport make it to their destination as expected.
MDW is located at 5700 South Cicero.

Arriving in Denver

Denver International Airport (DEN)

The distance from Denver International Airport (DEN) to central Denver is approximately 29 kilometres. It takes around 35 minutes to reach the centre driving.
It typically takes 1 hour 30 minutes to get there when travelling by public transport.
Consider staying at The Westin Denver International Airport after your flight from Chicago to Denver. It's a short drive from DEN and a comfortable option if you want to get some rest right away.
Go where the road takes you with a Denver International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and venture far and wide through Denver and beyond.
For the best deal, reserve your ride from Denver International Airport about one week ahead of your Chicago to Denver flight.
You'll find DEN at 8500 Pena Boulevard.

Best time to go to Denver

April is the quietest month for flights from Chicago to Denver, while July is the most popular. Work out the ideal time to go to Denver based on whether you want a lively atmosphere or a more laid-back vibe.
Before locking in your Chicago to Denver tickets, consider the kind of weather forecast you're hoping for. July is the warmest month in Denver, with temperatures ranging from 14ºC to 32ºC.
January has average temperatures of between -9ºC and 7ºC. Look for cheap flights from Chicago to Denver around that time if you want to travel in cooler conditions.

More about Denver

Once you've booked your flight from Chicago to Denver, choose a hotel that puts you where you want to be. Make one of these options your base for exploring Denver:
All great journeys should include some sightseeing. Denver Art Museum, Union Station and Denver Botanic Gardens are essential stops on your Denver itinerary.

Explore more of United States

Colorado Springs is just one of the many cities in United States waiting to be explored after you've seen Denver. Around 105 kilometres to the south, check out popular attractions including US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).
Around 13 kilometres east of Denver, Aurora is another favourite stop in United States. Start your sightseeing at Magellan's Travel Solutions and Gear, The Fairways at Lowry and Retired Enlisted Association Inc.