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Cheap Flights from Chicago to Denver

Compare Chicago to Denver flight deals

Find the cheapest month or even day of the year to fly to Denver

Book the best Denver fare with no extra fees

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.R 745 per passenger.Departing Thu, 6 Nov.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Thu, 6 Nov, arriving in Denver International.Price includes taxes and charges.From R 745, select.
Denver.R 745 per passenger.Departing Wed, 8 Oct.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Wed, 8 Oct, arriving in Denver International.Price includes taxes and charges.From R 745, select.
Denver.R 747 per passenger.Departing Thu, 4 Dec.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Thu, 4 Dec, arriving in Denver International.Price includes taxes and charges.From R 747, select.
Denver.R 1,199 per passenger.Departing Mon, 12 Jan.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Mon, 12 Jan, arriving in Denver International.Price includes taxes and charges.From R 1,199, select.
Denver.R 1,304 per passenger.Departing Tue, 30 Sep.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Tue, 30 Sep, arriving in Denver International.Price includes taxes and charges.From R 1,304, select.
Denver.R 1,364 per passenger.Departing Wed, 18 Feb.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Wed, 18 Feb, arriving in Denver International.Price includes taxes and charges.From R 1,364, select.
Denver.R 1,364 per passenger.Departing Tue, 3 Mar.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 3 Mar, arriving in Denver International.Price includes taxes and charges.From R 1,364, select.
Denver.R 1,955 per passenger.Departing Sat, 1 Aug.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Sat, 1 Aug, arriving in Denver International.Price includes taxes and charges.From R 1,955, 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.
Sep
from R 1,306
Oct
from R 746
Nov
from R 746
Dec
from R 748
Jan
from R 1,200
Feb
from R 1,366
Mar
from R 1,366
Apr
from R 1,958
May
from R 1,958
Jun
from R 1,958
Jul
from R 1,958
Aug
from R 1,958

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 foundR 745
Cheapest month to flyOctober
Average flight time2 hrs, 46 mins
Most popular airlineSouthwest Airlines
Average flights per week486

Finding cheap flights from Chicago to Denver: Frequently asked questions

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a return flight from Chicago to Denver is R 1,331. 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.
2 hours and 45 minutes is the average flight time from Chicago to Denver.
Southwest Airlines, United and American Airlines fly direct from Chicago to Denver.
As of September 2025, there are 486 flights per week flying from Chicago to Denver.
The cheapest month to fly from Chicago to Denver is usually October.
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 R 1,331.
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.
Yes – the average flight time is 2 hours and 45 minutes.
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.
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.
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.
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, R 746 is the best price we've seen for a one-way ticket from Chicago to Denver. The cheapest price for a return flight is R 1,331. 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

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.

Plan the rest of your trip from Chicago to Denver

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.