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$38+ Cheap flights from Sky Harbor Intl (PHX) to Fort Collins, CO

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Fort Collins are usually found in February or January, booked 56 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Sky Harbor Intl to Fort Collins

Cheapest flights from Sky Harbor Intl to Fort Collins
Explore the most affordable flight options available from Sky Harbor Intl to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mFrontier
Wed 2/49:44 pmDEN - PHX
Nonstop2h 09mFrontier
Deal found 12/17$68
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mFrontier
Sun 2/16:00 amDEN - PHX
Nonstop2h 12mFrontier
Deal found 12/17$72
This Super.com deal was found by Cheapflights users on 12/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:31 pmPHX - DEN
Nonstop1h 54mFrontier
Thu 1/110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/17$77
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:43 pmPHX - DEN
Nonstop1h 56mFrontier
Wed 12/3110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/17$78
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:43 pmPHX - DEN
Nonstop1h 56mFrontier
Wed 12/3110:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/17$86
This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:31 pmPHX - DEN
Nonstop1h 54mFrontier
Fri 1/910:29 pmDEN - PHX
Nonstop2h 00mFrontier
Deal found 12/17$93
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amPHX - DEN
Nonstop1h 55mFrontier
Sat 1/317:00 amDEN - PHX
1 stop5h 56mFrontier
Deal found 12/17$103
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHX - DEN
Nonstop1h 55mFrontier
Wed 1/711:04 amDEN - PHX
1 stop7h 08mFrontier
Deal found 12/17$104
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:58 amPHX - DEN
1 stop23h 06mFrontier
Wed 1/711:02 amDEN - PHX
Nonstop2h 04mFrontier
Deal found 12/16$111
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHX - DEN
Nonstop1h 55mFrontier
Thu 12/2512:26 pmDEN - PHX
Nonstop2h 07mFrontier
Deal found 12/17$118

Find flight deals from Sky Harbor Intl to Fort Collins

Keep the following information in mind while searching for Sky Harbor Intl to Fort Collins flight deals. Data was last updated December 18, 2025.

Round-trip from

$67
(Kiwi.com)

One-way from

$38
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$179
From Phoenix Sky Harbor Intl to Fort Collins
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Fort Collins
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Fort Collins 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 December 18, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Fort Collins that are best for you.

Fly from

Sky Harbor Intl

Fly to

Fort Collins

Route

Depart

Return

Price

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sat 1/17

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Tue 1/20

12:34 pm-7:25 pm

1 stop6h 51m

$136

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/15

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Sun 1/18

8:04 am-3:03 pm

1 stop6h 59m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 1/20

3:45 pm-11:58 pm

1 stop8h 13m

Denver Intl

Fri 1/23

12:34 pm-7:25 pm

1 stop6h 51m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Fri 2/6

11:41 am-6:41 pm

1 stop7h 00m

Denver Intl

Tue 2/10

8:04 am-2:00 pm

1 stop5h 56m

$156

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/15

5:34 pm-7:30 pm

Nonstop1h 56m

Denver Intl

Sun 1/18

1:25 pm-3:25 pm

Nonstop2h 00m

$157

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Tue 12/30

4:45 pm-10:44 pm

1 stop5h 59m

Denver Intl

Thu 1/1

10:29 pm-12:29 am

Nonstop2h 00m

$171

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/22

11:41 am-6:41 pm

1 stop7h 00m

Denver Intl

Sun 1/25

12:34 pm-7:25 pm

1 stop6h 51m

$176

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 2/5

8:07 pm-11:38 am

1 stop15h 31m

Denver Intl

Fri 2/6

7:39 pm-2:00 pm

1 stop18h 21m

$176

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Thu 1/1

11:03 am-3:13 pm

1 stop4h 10m

Denver Intl

Sat 1/31

5:15 am-9:37 am

1 stop4h 22m

$177

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Wed 12/31

6:35 am-11:00 am

1 stop4h 25m

Denver Intl

Tue 2/3

6:14 am-12:41 pm

1 stop6h 27m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 23 results
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Best time to book a flight from Sky Harbor Intl to Fort Collins

Have a flexible travel schedule? Discover the best time to fly to Fort Collins from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Fort Collins

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Fort Collins?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Fort Collins. Price data was last updated on December 12, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phoenix Sky Harbor Intl Airport to Fort Collins. 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 Phoenix Sky Harbor Intl Airport to Fort Collins?

Currently, February is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Fort Collins (average of $53). Flying from Phoenix Sky Harbor Intl Airport to Fort Collins in July is currently the most expensive (average of $102). 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 PHX to FC9?

Find hourly flight availability from Sky Harbor Intl to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from Phoenix Sky Harbor Intl Airport to Fort Collins 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 47% on airfare.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Fort Collins?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Fort Collins. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Fort Collins flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Fort Collins

Get insights into the airlines that provide service to Fort Collins. 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 Fort Collins. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Phoenix Sky Harbor Intl Airport to Fort Collins by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,093 reviews
Southwest
7.9
Good
4,250 reviews

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,055 reviews
Southwest
7.9
Good
4,250 reviews

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Fort Collins. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Fort Collins?

    For as low as $157, Alaska Airlines can have you in Fort Collins from Phoenix Sky Harbor Intl Airport in 1h 56m. There are 601 mi between Phoenix Sky Harbor Intl Airport and Fort Collins. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Fort Collins one-way?

    The cheapest airlines for a one-way flight from Phoenix Sky Harbor Intl Airport to Fort Collins are Frontier ($33), American Airlines ($68), and United Airlines ($74).

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Fort Collins?

    The top 3 most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Fort Collins are Lufthansa (89%), United Airlines (84%) and Air Canada (84%).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Fort Collins?

    On average you can expect to pay $937 for a flight from Phoenix Sky Harbor Intl Airport to Fort Collins. The cheapest flight overall is $51 while the most popular route, (Phoenix Sky Harbor Intl - Denver Intl) is currently priced at $61.

  • Can I find deals for flights from Sky Harbor Intl to Fort Collins that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Fort Collins flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Fort Collins?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Fort Collins.

  • Can I find deals for business class flights from Sky Harbor Intl to Fort Collins?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Fort Collins 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 Phoenix Sky Harbor Intl Airport to Fort Collins?

    Currently, February is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Fort Collins (average of $53). Flying from Phoenix Sky Harbor Intl Airport to Fort Collins in July is currently the most expensive (average of $102). 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

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Top 4 airlines flying from Sky Harbor Intl to Fort Collins

Discover the top 4 airlines that operate flights from Sky Harbor Intl to Fort Collins. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$145FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$221FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$138Average$336FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$153Average$244FlexibilityNo cancel feeOn-time63%

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