Cheap flights from Chicago, IL to Denver, CO
Flights starting at $23. Choose between Frontier Airlines, United Airlines, or American Airlines to find the best price.
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Cheapest one-way trip | $23 |
|---|---|
Cheapest round-trip | $52 |
Average round-trip | $120 |
Nonstop flights in September | $33 – $432 |
Most popular airline | Frontier Airlines |
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Travelers usually depart from O Hare International, Chicago Midway International, Chicago, IL - Union Station, Chicago Downtown Greyhound Station, or Chicago Rockford International when they travel from Chicago to Denver. Book your trip to arrive at Denver International, Denver Union Station, or Rocky Mountain Metropolitan Airport. The distance between Chicago and Denver is 1438 km. The most popular airlines for this route are Frontier Airlines, United Airlines, American Airlines, Spirit Airlines, and JetBlue Airways. Chicago and Denver have 401 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Chicago to Denver in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 24.09 - Sat 30.09
| Airline | Sun 24.09 | Mon 25.09 | Tue 26.09 | Wed 27.09 | Thu 28.09 | Fri 29.09 | Sat 30.09 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | 10 | --- | --- | --- | |
| --- | --- | --- | 3 | --- | --- | --- | |
| 1 | 2 | 1 | 2 | 1 | 1 | 1 |
Weekly direct flights for Sun 01.10 - Sat 07.10
| Airline | Sun 01.10 | Mon 02.10 | Tue 03.10 | Wed 04.10 | Thu 05.10 | Fri 06.10 | Sat 07.10 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | 5 | 2 | 2 | 7 | |
| --- | --- | --- | 2 | --- | 1 | 2 | |
| 1 | 2 | 1 | 2 | 1 | 1 | 1 |
Weekly direct flights for Sun 08.10 - Sat 14.10
| Airline | Sun 08.10 | Mon 09.10 | Tue 10.10 | Wed 11.10 | Thu 12.10 | Fri 13.10 | Sat 14.10 |
|---|---|---|---|---|---|---|---|
| 9 | 6 | 10 | 8 | 1 | 4 | 9 | |
| 2 | 1 | 2 | 2 | --- | 2 | 2 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Weekly direct flights for Sun 15.10 - Sat 21.10
| Airline | Sun 15.10 | Mon 16.10 | Tue 17.10 | Wed 18.10 | Thu 19.10 | Fri 20.10 | Sat 21.10 |
|---|---|---|---|---|---|---|---|
| 2 | 3 | 10 | 9 | 2 | 4 | 8 | |
| --- | 2 | 2 | 2 | 3 | 2 | 2 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Check-in for a flight from Chicago to Denver
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
| United Airlines | UAL | UA | Yes | No |
| American Airlines | AAL | AA | No | No |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
| JetBlue Airways | JBU | B6 | No | Opens 24 days before flight Closes 2 hours before flight |
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
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Airports near Chicago
- O Hare International
- Chicago Midway International
- General Mitchell International
- Gerald R. Ford International
- Dane County Regional
- General Wayne A. Downing Peoria International
- Fort Wayne International
- Quad City International
- South Bend International
- Chicago Rockford International