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$103+ Cheap flights from Calgary (YYC) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — DEN
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from Calgary to Denver Intl are usually found in June or September, booked 83 days in advance, depart on a Thursday or Saturday and return on a Friday

Cheap flight deals from Calgary to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Calgary (YYC) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 28, 2025.

Round-trip from

$138
(United Airlines)

One-way from

$103
(Air Canada)

Popular in

January

Cheapest in

June

Average price

$216

Good round-trip deal

$216 or less

Good one-way deal

$154 or less
From Calgary to Denver Intl
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One-way flight from Calgary to Denver Intl
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Highest demand for flights based on searches. 24% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Calgary to Denver Intl.
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Price to beat on a one-way flight from Calgary to Denver Intl.
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Find flight deals from Calgary to Denver

Cheapest flights from Calgary to Denver
Explore the most affordable flight options available from Calgary to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:15 amYYC - DEN
Nonstop2h 27mUnited Airlines
Mon 10/611:22 amDEN - YYC
Nonstop2h 31mUnited Airlines
Deal found 7/28$138
This Air Canada deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:15 amYYC - DEN
1 stop6h 23mAir Canada
Mon 10/66:05 pmDEN - YYC
1 stop6h 37mAir Canada
Deal found 7/26$147
This Booking.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:25 pmYYC - DEN
1 stop5h 58mMultiple Airlines
Sun 9/77:40 pmDEN - YYC
Nonstop2h 30mMultiple Airlines
Deal found 7/28$150
This Kissandfly.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:15 amYYC - DEN
Nonstop2h 27mLufthansa
Sun 9/77:21 pmDEN - YYC
Nonstop2h 27mLufthansa
Deal found 7/27$153
This Flightnetwork deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/48:55 amYYC - DEN
Nonstop2h 29mWestJet
Sun 9/77:40 pmDEN - YYC
Nonstop2h 30mWestJet
Deal found 7/25$166
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:15 amYYC - DEN
1 stop7h 51mAlaska Airlines
Tue 9/2311:40 amDEN - YYC
2 stops12h 12mAlaska Airlines
Deal found 7/28$261
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:55 amYYC - DEN
Nonstop2h 32mDelta
Mon 8/2512:15 pmDEN - YYC
Nonstop2h 31mDelta
Deal found 7/28$269

Cheapflights Fare Finder

 
Customize your flight search to find flights from Calgary to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2025.
Use the filters below to find and compare flights from Calgary to Denver that are best for you.

Fly from

Calgary

Fly to

Denver

Route

Depart

Return

Price

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Sat 10/4

6:15 am-8:42 am

Nonstop2h 27m

Denver Intl

Mon 10/6

11:22 am-1:53 pm

Nonstop2h 31m

$138

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Sat 10/4

6:15 am-12:38 pm

1 stop6h 23m

Denver Intl

Mon 10/6

6:05 pm-12:42 am

1 stop6h 37m

$147

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Thu 9/4

1:25 pm-7:23 pm

1 stop5h 58m

Denver Intl

Sun 9/7

7:40 pm-10:10 pm

Nonstop2h 30m

$150

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Thu 9/4

6:15 am-8:42 am

Nonstop2h 27m

Denver Intl

Sun 9/7

7:21 pm-9:48 pm

Nonstop2h 27m

$153

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Thu 9/4

8:55 am-11:24 am

Nonstop2h 29m

Denver Intl

Sun 9/7

7:40 pm-10:10 pm

Nonstop2h 30m

$166

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Tue 9/16

6:15 am-2:06 pm

1 stop7h 51m

Denver Intl

Tue 9/23

11:40 am-11:52 pm

2 stops12h 12m

$261

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Fri 8/22

8:55 am-11:27 am

Nonstop2h 32m

Denver Intl

Mon 8/25

12:15 pm-2:46 pm

Nonstop2h 31m

$269

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Thu 8/21

1:25 pm-7:30 pm

1 stop6h 05m

$103

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Thu 8/21

8:55 am-11:27 am

Nonstop2h 32m

$108

CalgaryDenver

YYC - DEN

YYCDEN

Calgary

Mon 8/18

7:30 pm-10:04 pm

Nonstop2h 34m

$117

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 12 results
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The best insider tips for Calgary to Denver flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Calgary to Denver trip
Airports
YYC

For public transport, use Route 300 for a rapid transit bus into downtown Calgary from YYC.

Read more about YYCby Jenna Scatena
DEN

Use the A Line train for a 37-minute ride from DEN to Denver’s Union Station, running every 15 minutes.

Read more about DENby Emily Zemler
Our travel experts
Jenna Scatena

Jenna Scatena

Expert on YYC

Jenna Scatena

Jenna Scatena

Journalist and Travel Writer, Jenna Scatena is an award-winning travel writer with a love for sharing stories and exploring new places, especially by Vespa. Though she's from San Francisco, she has spent a significant chunk of her vacation days over the last decade eating her way through Texas and sleeping in hotels around the world—especially in California, the Middle East, and Europe.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Calgary to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Calgary with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Calgary to Denver

How far ahead should I book a flight from Calgary to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Calgary to Denver. Price data was last updated on July 25, 2025.

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Calgary to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Calgary to Denver?

Currently, October is the cheapest month in which you can book a flight from Calgary to Denver (average of $197). Flying from Calgary to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YYC to DEN?

Find hourly flight availability from Calgary to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

One of the essential ways to save on airfare from Calgary to Denver is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

What is the cheapest day to fly from Calgary to Denver?

Use this chart to determine the cheapest time to fly round-trip from Calgary to Denver. Price data was last updated on July 20, 2025.

Travelers seeking maximum savings on their Calgary to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Calgary to Denver

Explore weekly flight availability from Calgary to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.

The most flights from YYC to DEN are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 28, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and United Airlines from Calgary to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,975 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,892 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
WestJet
7.2
Good
2,968 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Air Canada
7.1
Good
9,813 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Calgary to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Calgary to Denver?

    You will need to book a flight from Calgary to Denver Intl if you want to fly from Calgary to Denver. At least 3 different airlines have flights from Calgary (YYC) to Denver Intl (DEN) on a regular basis. There are 8 flights to Denver from the Calgary airport per day. If you manage to book one that is nonstop, then you can expect the flight time from YYC to DEN to be around 2h 27m.

  • How popular is this Calgary to Denver flight route?

    Flights from Calgary to Denver Intl have been viewed 68 times in the past calendar month.

  • What are the cheapest airlines flying from Calgary to Denver round-trip?

    Our cheapest airline available from Calgary to Denver is United Airlines. Our recent data shows that you can find tickets from as low as $138 on this airline. Additional options worth looking into are Air Canada and Lufthansa, starting at $147 and $153 round-trip. United Airlines is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Calgary to Denver one-way?

    The cheapest airlines for a one-way flight from Calgary to Denver are Air Canada ($103), WestJet ($108), and United Airlines ($117).

  • What are the most reliable airlines from Calgary to Denver?

    Before booking your flight to Denver from Calgary, check out the most reliable airlines to get you to your destination on time: Aeromexico (82%), Air Canada (74%), United Airlines( 69%).

  • What are the cheapest flights from Calgary to Denver?

    On average you can expect to pay $601 for a flight from Calgary to Denver. The cheapest flight overall is $108 while the most popular route, (Calgary - Denver Intl) is currently priced at $138.

  • Can I find deals for flights from Calgary to Denver that include hotel bookings?

    Yes. In addition to deals on Calgary to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Calgary to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Calgary to Denver.

  • Can I find deals for business class flights from Calgary to Denver?

    Yes. Cheapflights offers flight deals from Calgary to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Calgary to Denver?

    Currently, October is the cheapest month in which you can book a flight from Calgary to Denver (average of $197). Flying from Calgary to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Brighton
Silverthorne
Golden
Thornton
Greeley
Frisco
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Calgary to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Edmonton to Denver flights
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Top 3 airlines flying from Calgary to Denver

Discover the top 3 airlines that operate flights from Calgary to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$97Average$163FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$113Average$260FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$117Average$346FlexibilityNo cancel feeOn-time69%

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