Cheap flights from Denver to Chicago

One-way fares from $54 · DEN → CHI · prices found by travellers in the last 48 hours

Compare all dates Chicago → Denver
Cheapest fare
$54

Frontier Airlines · Mon, Dec 14

Cheapest month
December

from $54

Direct flights
Yes

Frontier Airlines

Flight time
2h 27m

1,480 km

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Cheapest month to fly from Denver to Chicago

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $75
  2. December 2026 Cheapest $54
  3. January 2027 $74
  4. February 2027 $75

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart21:26 Mon, Dec 14DEN → ORD 2h 28m · Direct
$54one way, per person
View deal
Frontier Airlines
Depart21:26 Wed, Dec 16DEN → ORD 2h 28m · Direct
$54one way, per person
View deal
Frontier Airlines
Depart20:59 Thu, Dec 17DEN → ORD 2h 27m · Direct
$54one way, per person
View deal
Frontier Airlines
Depart20:59 Mon, Dec 21DEN → ORD 2h 27m · Direct
$76one way, per person
View deal
Frontier Airlines
Depart08:54 Wed, Dec 23DEN → ORD 6h 55m · 1 stop
$108one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Chicago

Where to stay, what to do and getting around, from our travel partners.

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Things to do

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Getting around

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About flights from Denver to Chicago

Denver (DEN) and Chicago (CHI) are about 1,480 km apart. Direct flights take around 2h 27m, and recent direct fares were with Frontier Airlines. Over the next few months, one-way fares start from $54, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Denver to Chicago?

The cheapest one-way fare we've seen recently is $54 with Frontier Airlines, departing Monday, December 14, 2026. Over the coming months, the lowest fare in each month ranges from $54 to $75.

What is the cheapest month to fly from Denver to Chicago?

December 2026 currently has the lowest fares, from $54 one way.

Are there direct flights from Denver to Chicago?

Yes. Recent direct fares were with Frontier Airlines.

How long is the flight from Denver to Chicago?

A direct flight takes about 2h 27m. Denver and Chicago are around 1,480 km apart.

Which airlines fly from Denver to Chicago?

Recent fares on this route were with Frontier Airlines.

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