Cheap flights from Calgary to North Keystone from CA $148

View CA $148 flight on Fri, Sep. 12, 2025Opens in a new window

Popular airlines from Calgary to North Keystone

  • WestJet

    WestJet

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • United

    United

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Cheap flights from Calgary (YYC) to North Keystone (DEN)

Prices were available within the past 7 days and start at CA $148 for one-way flights and CA $231 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

WestJet
Sun, Sep. 7 - Tue, Sep. 9
YYC
Calgary
DEN
Denver
CA $231 Roundtrip, found 4 hours ago
CA $231
Roundtrip
found 4 hours ago
Select WestJet flight, departing Sun, Sep. 7 from Calgary to Denver, returning Tue, Sep. 9, priced at CA $231 found 4 hours ago
WestJet
Thu, Sep. 4 - Fri, Sep. 5
YYC
Calgary
DEN
Denver
CA $240 Roundtrip, found 4 hours ago
CA $240
Roundtrip
found 4 hours ago
Select WestJet flight, departing Thu, Sep. 4 from Calgary to Denver, returning Fri, Sep. 5, priced at CA $240 found 4 hours ago
Air Canada
Thu, Sep. 11 - Mon, Sep. 15
YYC
Calgary
DEN
Denver
CA $263 Roundtrip, found 1 day ago
CA $263
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Sep. 11 from Calgary to Denver, returning Mon, Sep. 15, priced at CA $263 found 1 day ago
United
Tue, Aug. 26 - Wed, Sep. 3
YYC
Calgary
DEN
Denver
CA $267 Roundtrip, found 7 hours ago
CA $267
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Aug. 26 from Calgary to Denver, returning Wed, Sep. 3, priced at CA $267 found 7 hours ago
Delta
Sat, Sep. 6 - Sun, Sep. 7
YYC
Calgary
DEN
Denver
CA $285 Roundtrip, found 3 hours ago
CA $285
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Sep. 6 from Calgary to Denver, returning Sun, Sep. 7, priced at CA $285 found 3 hours ago
American Airlines
Mon, Sep. 8 - Wed, Sep. 10
YYC
Calgary
DEN
Denver
CA $537 Roundtrip, found 7 hours ago
CA $537
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Mon, Sep. 8 from Calgary to Denver, returning Wed, Sep. 10, priced at CA $537 found 7 hours ago

Find the cheapest month to fly from Calgary (YYC) to Denver (DEN)

May is typically the cheapest month to fly

From CA $180 - CA $382 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.