Cheap flights from Chicago to Mountain States

View AU$116 flight on Thu, 20 Nov. 2025Opens in a new window

Popular airlines from Chicago to Mountain States

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Alaska Airlines

    Alaska Airlines

  • United

    United

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Cheap Flights from Chicago (CHI) to Mountain States (DEN)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 22 Sep. - Tue, 23 Sep.
ORD
Chicago
DEN
Denver
AU$232 Return, found 1 day ago
AU$232
Return
found 1 day ago
Select American Airlines flight, departing Mon, 22 Sep. from Chicago to Denver, returning Tue, 23 Sep., priced at AU$232 found 1 day ago
American Airlines
Wed, 20 Aug. - Wed, 27 Aug.
ORD
Chicago
DEN
Denver
AU$234 Return, found 3 days ago
AU$234
Return
found 3 days ago
Select American Airlines flight, departing Wed, 20 Aug. from Chicago to Denver, returning Wed, 27 Aug., priced at AU$234 found 3 days ago
Hawaiian Airlines
Tue, 9 Sep. - Fri, 12 Sep.
ORD
Chicago
LAS
Las Vegas
AU$304 Return, found 19 hours ago
AU$304
Return
found 19 hours ago
Select Hawaiian Airlines flight, departing Tue, 9 Sep. from Chicago to Las Vegas, returning Fri, 12 Sep., priced at AU$304 found 19 hours ago
Delta
Mon, 22 Sep. - Tue, 23 Sep.
MDW
Chicago
DEN
Denver
AU$325 Return, found 1 day ago
AU$325
Return
found 1 day ago
Select Delta flight, departing Mon, 22 Sep. from Chicago to Denver, returning Tue, 23 Sep., priced at AU$325 found 1 day ago
Alaska Airlines
Wed, 3 Dec. - Sat, 6 Dec.
ORD
Chicago
LAS
Las Vegas
AU$330 Return, found 12 hours ago
AU$330
Return
found 12 hours ago
Select Alaska Airlines flight, departing Wed, 3 Dec. from Chicago to Las Vegas, returning Sat, 6 Dec., priced at AU$330 found 12 hours ago
United
Mon, 22 Sep. - Tue, 23 Sep.
ORD
Chicago
DEN
Denver
AU$340 Return, found 1 day ago
AU$340
Return
found 1 day ago
Select United flight, departing Mon, 22 Sep. from Chicago to Denver, returning Tue, 23 Sep., priced at AU$340 found 1 day ago

Find the cheapest month to fly from Chicago (CHI) to Las Vegas (LAS)

September is typically the cheapest month to fly

From AU$95 - AU$235 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.