Cheap flights from Montreal to North Keystone from CA $270

View CA $270 flight on Sun, Aug. 24, 2025Opens in a new window

Popular airlines from Montreal to North Keystone

  • American Airlines

    American Airlines

  • Delta

    Delta

  • WestJet

    WestJet

  • Air Canada

    Air Canada

  • United

    United

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Cheap flights from Montreal (YMQ) to North Keystone (DEN)

Prices were available within the past 7 days and start at CA $270 for one-way flights and CA $466 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Sep. 1 - Mon, Sep. 15
YUL
Montreal
DEN
Denver
CA $466 Roundtrip, found 2 hours ago
CA $466
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Mon, Sep. 1 from Montreal to Denver, returning Mon, Sep. 15, priced at CA $466 found 2 hours ago
Air Canada
Sun, Aug. 24 - Thu, Aug. 28
YUL
Montreal
DEN
Denver
CA $466 Roundtrip, just found
CA $466
Roundtrip
just found
Select Air Canada flight, departing Sun, Aug. 24 from Montreal to Denver, returning Thu, Aug. 28, priced at CA $466 just found
American Airlines
Fri, Aug. 29 - Wed, Sep. 3
YUL
Montreal
DEN
Denver
CA $474 Roundtrip, found 2 hours ago
CA $474
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Fri, Aug. 29 from Montreal to Denver, returning Wed, Sep. 3, priced at CA $474 found 2 hours ago
United
Tue, Dec. 9 - Tue, Dec. 16
YUL
Montreal
DEN
Denver
CA $474 Roundtrip, found 21 hours ago
CA $474
Roundtrip
found 21 hours ago
Select United flight, departing Tue, Dec. 9 from Montreal to Denver, returning Tue, Dec. 16, priced at CA $474 found 21 hours ago
Delta
Sat, Aug. 23 - Sat, Aug. 30
YUL
Montreal
DEN
Denver
CA $477 Roundtrip, found 2 hours ago
CA $477
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Aug. 23 from Montreal to Denver, returning Sat, Aug. 30, priced at CA $477 found 2 hours ago
WestJet
Tue, Sep. 2 - Thu, Sep. 18
YUL
Montreal
DEN
Denver
CA $495 Roundtrip, found 2 hours ago
CA $495
Roundtrip
found 2 hours ago
Select WestJet flight, departing Tue, Sep. 2 from Montreal to Denver, returning Thu, Sep. 18, priced at CA $495 found 2 hours ago

Find the cheapest month to fly from Montreal (YMQ) to Denver (DEN)

September is typically the cheapest month to fly

From CA $360 - CA $1,020 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.