Find Cheap Flights from Chicago to Denver (CHI - DEN)

Flights overview

Useful information for finding cheap flights from Chicago to Denver and booking your next trip

Cheapest round-trip flights	$127	Frontier Nonstop 3 hr Sat, Jul 18 — Mon, Jul 20	The cheapest round-trip flight from Chicago to Denver is currently $127
Cheapest one-way flight	$28	Frontier Nonstop 3 hr Wed, Jul 22	The cheapest one-way flight from Chicago to Denver is currently $28
Last-minute weekend getaway	$190	Frontier Nonstop 4 hr Sat, May 9 — Sun, May 10	The cheapest last-minute weekend getaway from Chicago to Denver is currently $190
Cheapest business class flights	$375	Frontier Nonstop 3 hr Sat, Aug 1 — Mon, Aug 3	The cheapest business class round-trip flight from Chicago to Denver is currently $375

Fastest flight	2 hr 30 min	The fastest nonstop flight from Chicago to Denver takes 2 hr 30 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Chicago to Denver is typically November. The most expensive month to fly is typically February.

November Cheapest	Typical prices: $90–265
February Most expensive	Typical prices: $135–225

Popular airlines from Chicago to Denver

United

Nonstop

from $221

Typical price: $175–355

84 weekly nonstop flights

ORD - DEN Every day

893 weekly connecting flights

ORD - DEN Every day
Southwest

Nonstop

from $221

Typical price: $175–340

44 weekly nonstop flights

MDW, ORD - DEN Every day

2449 weekly connecting flights

MDW, ORD - DEN Every day
American

Nonstop

from $221

Typical price: $180–380

35 weekly nonstop flights

ORD - DEN Every day

215 weekly connecting flights

ORD - DEN Every day
Delta

from $241

Typical price: $215–540

356 weekly connecting flights

MDW, ORD - DEN Every day
Frontier

Nonstop

from $127

Typical price: $115–235

6 weekly nonstop flights

ORD - DEN Every Tue, Wed, Thu, Fri, Sat, Sun

40 weekly connecting flights

MDW, ORD - DEN Every day
Alaska

from $473

Typical price: $320–790

21 weekly connecting flights

ORD - DEN Every day

Popular airports near Chicago

Chicago O'Hare International Airport (ORD)

Chicago United States 26 min 16 mi
Chicago Midway International Airport (MDW)

Chicago United States 25 min 9 mi
Milwaukee Mitchell International Airport (MKE)

Milwaukee United States 1 hr 23 min 75 mi
Indianapolis International Airport (IND)

Indianapolis United States 2 hr 58 min 165 mi

Popular airports near Denver

Denver International Airport (DEN)

Denver United States 38 min 19 mi
Colorado Springs Airport (COS)

Colorado Springs United States 1 hr 27 min 66 mi
Centennial Airport (APA)

Denver United States 27 min 14 mi
Eagle County Regional Airport (EGE)

Vail United States 2 hr 19 min 103 mi

Frequently asked questions about flying from Chicago to Denver

The cheapest flights from Chicago to Denver are usually in November. Typical ticket prices in November range from $90 to $265.

The cheapest round-trip flight from Chicago to Denver recently found on Google Flights was with Frontier from $127. The cheapest one-way flight was with Frontier from $28.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest United flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest Southwest flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest American flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest Delta flight from Chicago to Denver is $241, flying from Jun 4 to Jun 8.
The cheapest Frontier flight from Chicago to Denver is $127, flying from Jul 18 to Jul 20.
The cheapest Alaska flight from Chicago to Denver is $473, flying from Jun 6 to Jun 8.

The cheapest round-trip flight from Chicago to Denver starts at $127 from Sat, Jul 18 to Mon, Jul 20. The cheapest one-way flight starts at $28 and departs on Wed, Jul 22.

2 hr 30 min is the shortest flight time from Chicago to Denver.

Denver’s mild summer months (Jun–Aug) are a popular time for visitors exploring the city and nearby national parks. The ski season runs through winter (Nov–Mar). Major events include the National Western Stock Show & Rodeo (Jan) and A Taste of Colorado (Sep) food and arts festival.

It's easy to use Google Flights to find the cheapest days to fly from Chicago to Denver.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Chicago to Denver really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Chicago to Denver.

In terms of nonstop flights, United is the most popular. United offers 84 nonstop flights and 893 connecting flights per week. United flies from Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .

In terms of flights, Southwest is the most popular. Southwest offers 44 nonstop flights and 2,449 connecting flights per week. Southwest flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .

Other popular airlines flying from Chicago to Denver are:

American offers 35 nonstop flights and 215 connecting flights per week. American flies from Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .
Delta offers 356 connecting flights per week. Delta flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .
Frontier offers 6 nonstop flights and 40 connecting flights per week. Frontier flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .
Alaska offers 21 connecting flights per week. Alaska flies from Chicago O'Hare International Airport (ORD) to Denver International Airport (DEN) .

The number of connecting flights refers to distinct flights with at least one stop between Chicago and Denver.

The cheapest round-trip flight from Chicago to Denver recently found on Google Flights was with Frontier from $127. The cheapest one-way flight was with Frontier from $28.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest United flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest Southwest flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest American flight from Chicago to Denver is $221, flying from Jun 4 to Jun 8.
The cheapest Delta flight from Chicago to Denver is $241, flying from Jun 4 to Jun 8.
The cheapest Frontier flight from Chicago to Denver is $127, flying from Jul 18 to Jul 20.
The cheapest Alaska flight from Chicago to Denver is $473, flying from Jun 6 to Jun 8.

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

There are 84 United direct flights from Chicago to Denver per week. Flights are available every day.
There are 44 Southwest direct flights from Chicago to Denver per week. Flights are available every day.
There are 35 American direct flights from Chicago to Denver per week. Flights are available every day.
There are 6 Frontier direct flights from Chicago to Denver per week. Flights are available on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Chicago and Denver at price $190 is offered by Frontier from Sat, May 9 to Sun, May 10.

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

There are 84 United direct flights from Chicago to Denver per week. Flights are available every day.
There are 44 Southwest direct flights from Chicago to Denver per week. Flights are available every day.
There are 35 American direct flights from Chicago to Denver per week. Flights are available every day.
There are 6 Frontier direct flights from Chicago to Denver per week. Flights are available on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Chicago to Denver on a daily basis.

The cheapest direct (nonstop) round-trip flights between Chicago and Denver start at $127 from Sat, Jul 18 to Mon, Jul 20 with Frontier.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Chicago to Denver, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Chicago and Denver start at $375 from Sat, Aug 1 to Mon, Aug 3 with Frontier.

The cheapest economy class round-trip flights between Chicago and Denver start at $127 from Sat, Jul 18 to Mon, Jul 20.

To book business class trips from Chicago to Denver, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Chicago and Denver starts at $190 from Sat, May 9 to Sun, May 10 with Frontier.

The cheapest last-minute deal between Chicago and Denver at price $190 is offered by Frontier from Sat, May 9 to Sun, May 10.

To find last-minute flight deals from Chicago to Denver, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.