Title: Cheap Frontier Airlines fights from Denver to Chicago - Expedia.ca

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#  Cheap Frontier Airlines fights from Denver (DEN) to Chicago (CHI)

- [Roundtrip](?flightType=roundtrip)
- [One-way](?flightType=oneway)
- [Multi-city](?flightType=multicity)

### Travellers

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InfantsYounger than 2

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## Find the cheapest month to fly from Denver (DEN) to Chicago (CHI)

### March is typically the cheapest month to fly

From CA $67 - CA $371 per traveller.

## Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

[](https://www.expedia.ca/Flights-Search?leg1=from:DEN,to:MDW,departure:11/01/2026TANYT&leg2=from:MDW,to:DEN,departure:24/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE)

MDW

Midway Intl.

CheapestClosest

16 min

[Flights from CA $313

](https://www.expedia.ca/Flights-Search?leg1=from:DEN,to:MDW,departure:11/01/2026TANYT&leg2=from:MDW,to:DEN,departure:24/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 

## Travel information

| Origin airport      | Denver Intl. |
| ------------------- | ------------ |
| Destination airport | O'Hare Intl. |
| Distance            | 1417 km      |

\*Available to Expedia members.