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Key West

$135+ Cheap flights from Colorado to Key West (EYW)

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EYW
May 25 — Jun 11
Sun 5/25
Sun 6/1
1 adult, Economy
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Cheap flight deals from Colorado to Key West

Keep the following information in mind while searching for Colorado to Key West flight deals. Data was last updated May 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$231
(American Airlines)

One-way from

$135
(JetBlue)

Popular in

March

Cheapest in

August

Average price

$376
Provider with most accurate pricing for Denver Intl-Key West flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Key West flights.
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From Colorado to Key West
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One-way flight from Colorado to Key West
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Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Colorado to Key West

Cheapest flights from Colorado to Key West
Explore the most affordable flight options available from Colorado to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 20, 2025.

This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:12 amDEN - EYW
1 stop7h 36mAmerican Airlines
Sat 9/277:31 pmEYW - DEN
1 stop5h 44mAmerican Airlines
Deal found 5/20$231
This Delta deal was found by Cheapflights users on 5/19. 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.
Tue 7/19:39 amDEN - EYW
1 stop8h 00mDelta
Wed 7/92:03 pmEYW - DEN
1 stop8h 21mDelta
Deal found 5/19$237
This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:22 amCOS - EYW
1 stop7h 40mAmerican Airlines
Wed 11/54:00 pmEYW - COS
2 stops9h 31mAmerican Airlines
Deal found 5/20$320
This Mytrip deal was found by Cheapflights users on 5/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/75:57 pmDEN - EYW
1 stop19h 30mAllegiant Air
Sun 6/154:17 pmEYW - DEN
1 stop25h 46mAllegiant Air
Deal found 5/20$329
This United Airlines deal was found by Cheapflights users on 5/19. 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.
Wed 7/305:48 pmDEN - EYW
1 stop12h 12mUnited Airlines
Mon 8/46:45 pmEYW - DEN
1 stop17h 20mUnited Airlines
Deal found 5/19$383
This Mytrip deal was found by Cheapflights users on 5/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/710:49 amDEN - EYW
3 stops19h 14mMultiple Airlines
Sun 6/154:17 pmEYW - DEN
1 stop25h 46mMultiple Airlines
Deal found 5/20$419
This JetBlue deal was found by Cheapflights users on 5/19. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:59 pmDEN - EYW
1 stop9h 23mJetBlue
Sun 1/412:07 pmEYW - DEN
1 stop12h 57mJetBlue
Deal found 5/19$562
This United Airlines deal was found by Cheapflights users on 5/19. 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.
Tue 6/37:30 amCOS - EYW
2 stops8h 35mUnited Airlines
Sat 6/76:45 pmEYW - COS
2 stops19h 31mUnited Airlines
Deal found 5/19$651

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado to Key West 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 May 20, 2025.
Use the filters below to find and compare flights from Colorado to Key West that are best for you.

Fly from

Colorado

Fly to

Key West

Route

Depart

Return

Price

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Sat 9/20

7:12 am-4:48 pm

1 stop7h 36m

Key West

Sat 9/27

7:31 pm-11:15 pm

1 stop5h 44m

$231

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 7/1

9:39 am-7:39 pm

1 stop8h 00m

Key West

Wed 7/9

2:03 pm-8:24 pm

1 stop8h 21m

$237

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Sat 6/7

5:57 pm-3:27 pm

1 stop19h 30m

Key West

Sun 6/15

4:17 pm-4:03 pm

1 stop25h 46m

$329

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Wed 7/30

5:48 pm-8:00 am

1 stop12h 12m

Key West

Mon 8/4

6:45 pm-10:05 am

1 stop17h 20m

$383

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Sat 6/7

10:49 am-8:03 am

3 stops19h 14m

Key West

Sun 6/15

4:17 pm-4:03 pm

1 stop25h 46m

$419

Colorado SpringsKey West

COS - EYW

COSEYW

Colorado Springs

Tue 6/3

7:30 am-6:05 pm

2 stops8h 35m

Key West

Sat 6/7

6:45 pm-12:16 pm

2 stops19h 31m

$651

Colorado SpringsKey West

COS - EYW

COSEYW

Colorado Springs

Tue 6/3

6:00 am-4:40 pm

1 stop8h 40m

Key West

Sat 6/7

11:53 am-8:27 pm

2 stops10h 34m

$820

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Fri 10/10

11:09 pm-11:50 am

1 stop10h 41m

$135

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Fri 7/11

11:54 pm-12:41 pm

1 stop10h 47m

$142

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Fri 10/10

8:41 am-9:02 am

2 stops22h 21m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 13 results
1
2

Best time to book a flight from Colorado to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Colorado 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 Colorado to Key West

What is the cheapest month to book a flight from Colorado to Key West?

Currently, August is the cheapest month in which you can book a flight from Colorado to Key West (average of $328). Flying from Colorado to Key West in March is currently the most expensive (average of $492). 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 CO to EYW?

Find hourly flight availability from Colorado to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 20, 2025.

When flying from Colorado to Key West, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Key West by month

Plan your trip to Key West by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

Temperature in Key West by month

Plan your trip to Key West by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. 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 Key West. Reviews last updated May 20, 2025.
Read through reviews of airlines operating flights from Colorado to Key West, such as Delta, United Airlines and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,744 reviews
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
JetBlue
7.3
Good
2,928 reviews
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Allegiant Air
7.3
Good
731 reviews
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

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

  • What airport do you fly into for flights to Key West from Colorado?

    For a flight from Colorado to Key West, you will be flying into Key West. Key West (EYW) is just 2.6 mi from the center of the city.

  • What are the cheapest airlines to fly from Colorado to Key West one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $135. However, be on the lookout for offers from United Airlines and Allegiant Air, as they are both options that can get you from Colorado to Key West for a low price.

  • What are the most popular routes from Colorado to Key West?

    When deciding which route to take from Colorado to Key West consider Denver Intl - Key West, Colorado Springs - Key West or Durango La Plata County - Key West as they are the most popular.

  • Can I find deals for flights from Colorado to Key West that include hotel bookings?

    Yes. In addition to deals on Colorado to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Key West?

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

  • Can I find deals for business class flights from Colorado to Key West?

    Yes. Cheapflights offers flight deals from Colorado to Key West 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 Colorado to Key West?

    Currently, August is the cheapest month in which you can book a flight from Colorado to Key West (average of $328). Flying from Colorado to Key West in March is currently the most expensive (average of $492). 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.

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Top 3 airlines flying from Colorado to Key West

Discover the top 3 airlines that operate flights from Colorado to Key West. 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 May 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$236Average$564FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$441FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$357Average$589FlexibilityNo cancel feeOn-time69%

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