Flights from Chicago to Denver
Nonstop options and typical one-way fares by airline.
Typical fares by airline
| Airline | Route | Typical one-way fare* |
|---|---|---|
| Frontier Airlines | ORD → DEN | $90.00 |
| Southwest Airlines | MDW → DEN | $158.39 |
| American Airlines | ORD → DEN | $158.82 |
| United Airlines | ORD → DEN | $227.47 |
*Historical average incl. taxes and fees (2025 Q2 (Apr-Jun 2025)); not a live quote.
Frequently asked questions
Which airlines fly nonstop from Chicago to Denver?+
Frontier Airlines, Southwest Airlines, American Airlines, United Airlines.
What is the lowest typical fare?+
The lowest historical average one-way fare in our data is $90.00 on Frontier Airlines (2025 Q2 (Apr-Jun 2025)). Actual fares vary.
Can an agent book this for me?+
Yes, call +1-800-000-0000.