65 € Chicago (CHIA) to Denver (DENA) Cheap Flights

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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.65 € per passenger.Departing Tue, 28 Oct, returning Fri, 31 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Tue, 28 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Fri, 31 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From 65 €, select.

Denver.66 € per passenger.Departing Thu, 30 Oct, returning Sat, 1 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Thu, 30 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 1 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From 66 €, select.

Denver.66 € per passenger.Departing Mon, 3 Nov, returning Sat, 8 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Mon, 3 Nov, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 8 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From 66 €, select.

Denver.66 € per passenger.Departing Fri, 5 Dec, returning Sun, 7 Dec.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Fri, 5 Dec, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 7 Dec, arriving in Chicago O'Hare International.Price includes taxes and charges.From 66 €, select.

Denver.67 € per passenger.Departing Tue, 30 Sep, returning Fri, 3 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Tue, 30 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Fri, 3 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From 67 €, select.

Denver.71 € per passenger.Departing Thu, 27 Nov, returning Thu, 4 Dec.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Thu, 27 Nov, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Thu, 4 Dec, arriving in Chicago O'Hare International.Price includes taxes and charges.From 71 €, select.

Denver.92 € per passenger.Departing Sat, 13 Dec, returning Sun, 11 Jan.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Sat, 13 Dec, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 11 Jan, arriving in Chicago O'Hare International.Price includes taxes and charges.From 92 €, select.

Denver.98 € per passenger.Departing Sat, 27 Sep, returning Tue, 30 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Sat, 27 Sep, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 30 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From 98 €, 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 October.

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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	65 €
Cheapest month to fly	October
Average flight time	2 hrs, 46 mins
Most popular airline	Southwest Airlines
Average flights per week	370

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 65 €. 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 45 minutes is the average flight time from Chicago to Denver.

Which airlines fly direct from Chicago to Denver?

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

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

As of September 2025, there are 5,832 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 October.

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 65 €.

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 Tuesday, 28 October 2025.

Can I get a direct flight from Chicago to Denver?

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

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 September, the average temperature is usually around 17°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

Kick off 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.
Denver International Airport (DEN) is the chief entry point to Denver.
Around 2 hours 45 minutes is how long you can expect to be in the air on a direct Chicago to Denver flight.
Denver's timezone is UTC-6, which makes Denver one hour behind Chicago.
With 108 weekly flights between the two airports, O'Hare International Airport (ORD) to Denver International Airport (DEN) is the busiest route. Hop on the earliest flight from Chicago to Denver with United Airlines at 05:00. If you'd like to get more out of your day before you fly, the last flight from ORD to DEN is with Frontier Airlines at 22:11.
To ensure you catch your Chicago to Denver flight, leave enough time for things like baggage drop and finding your gate. Arriving two hours ahead of international departures and one hour before domestic flights is a good rule of thumb.
Peak months like August or high seasons such as spring break and Christmas will mean bigger lines at check-in and security. Travelling then? Play it safe and head to the airport even earlier. Arriving two hours before a domestic flight and four hours ahead of an international departure is a smart move.

How to find the cheapest flights from Chicago to Denver

At the moment, 34 € is the best price we've seen for a one-way ticket from Chicago to Denver. The cheapest price for a return flight is 65 €. 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)

If you're searching for a direct flight from Chicago to Denver, you can leave from O'Hare International Airport (ORD). Get from ORD to Denver International Airport (DEN) without making any stops.
Choose from a variety of airlines that offer direct Chicago to Denver plane tickets out of ORD. Book your journey with one of these:
Located around 26 kilometres from the centre of Chicago, ORD can be reached in about 35 minutes by car, depending on traffic. The journey on public transport will take roughly 55 minutes.
Want a hassle-free 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 perfect:
Of the flights that depart from O'Hare International Airport, 74.85% land on schedule at their destination.
The address for ORD is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

Rather fly from Chicago Midway International Airport (MDW)? This popular hub offers direct flights from Chicago to Denver, seamlessly connecting to Denver International Airport (DEN).
Southwest Airlines offers direct Chicago to Denver plane tickets from MDW. Book your favourite aisle (or window) seat and reach your destination in a single journey.
With public transport, you can travel from central Chicago to MDW in around 45 minutes. The airport is roughly 14 kilometres away. Driving will take you about 20 minutes.
Get your holiday started early with an additional night away from home. Before your flight from Chicago to Denver, unwind in one of these hotels close to Chicago Midway International Airport:
When it comes to flight punctuality, Chicago Midway International Airport has an on-time arrival rate of 77.88%.
MDW is located at 5700 South Cicero.

Arriving in Denver

Denver International Airport (DEN)

Denver International Airport (DEN) is approximately 31 kilometres from central Denver. If you're catching a cab or a ride-share, the drive takes roughly 35 minutes.
If you're taking public transport, expect a journey time of about 1 hour 30 minutes.
Consider checking in to The Westin Denver International Airport after touching down from your flight from Chicago to Denver. It's a short drive from DEN and a great option if you want to relax as soon as possible.
Fast-track your adventure by picking up a Denver International Airport rental car. Grab your wheels from Routes Car Rentals, Dollar or Budget to explore Denver and beyond.
Lock in the best possible rate by booking your ride from Denver International Airport around one week before your trip.
DEN is situated 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 (57ºF) to 32ºC (90ºF).
January has average temperatures of between -9ºC (16ºF) and 7ºC (45ºF). Look for cheap flights from Chicago to Denver around that time if you want to travel in cooler conditions.

More about Denver

After booking your flight from Chicago to Denver, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Denver:
There are so many things to explore in this city it can be tricky to know where to start. Denver Art Museum, Union Station and Denver Botanic Gardens are highlights which should be on any well-planned 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.