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Key West

$119+ Cheap flights from Denver to Key West (DEN - 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EYW
Aug 21 — Aug 281
Thu 8/21
Thu 8/28
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Key West are usually found in August or September, booked 89 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Denver to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Key West (EYW). 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 August 16, 2025.

Round-trip from

$231
(American Airlines)

One-way from

$119
(Delta)

Popular in

March

Cheapest in

August

Average price

$299
From Denver Intl to Key West
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One-way flight from Denver Intl to Key West
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Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Denver to Key West

Cheapest flights from Denver to Key West
Explore the most affordable flight options available from Denver to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

This American Airlines deal was found by Cheapflights users on 8/14. 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.
Tue 10/285:45 amDEN - EYW
1 stop8h 33mAmerican Airlines
Tue 11/46:33 pmEYW - DEN
1 stop6h 36mAmerican Airlines
Deal found 8/14$231
This Delta deal was found by Cheapflights users on 8/13. 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 10/2112:50 pmDEN - EYW
1 stop5h 16mDelta
Wed 10/221:57 pmEYW - DEN
1 stop5h 52mDelta
Deal found 8/13$237
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/1312:10 pmDEN - EYW
1 stop5h 57mDelta
Tue 9/166:00 pmEYW - DEN
1 stop5h 52mDelta
Deal found 8/13$260
This American Airlines deal was found by Cheapflights users on 8/15. 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.
Wed 10/295:45 amDEN - EYW
2 stops9h 31mAmerican Airlines
Mon 11/36:33 pmEYW - DEN
1 stop6h 36mAmerican Airlines
Deal found 8/15$262
This Delta deal was found by Cheapflights users on 8/13. 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 9/99:36 amDEN - EYW
1 stop5h 36mDelta
Wed 9/176:00 pmEYW - DEN
1 stop5h 52mDelta
Deal found 8/13$263
This American Airlines deal was found by Cheapflights users on 8/15. 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.
Fri 10/35:44 amDEN - EYW
2 stops11h 15mAmerican Airlines
Tue 10/711:22 amEYW - DEN
2 stops10h 20mAmerican Airlines
Deal found 8/15$267
This American Airlines deal was found by Cheapflights users on 8/15. 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 11/158:13 amDEN - EYW
1 stop6h 03mAmerican Airlines
Sat 11/224:26 pmEYW - DEN
1 stop7h 22mAmerican Airlines
Deal found 8/15$274
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Fri 9/1211:59 pmDEN - EYW
1 stop9h 14mAmerican Airlines
Fri 9/193:45 pmEYW - DEN
1 stop8h 17mAmerican Airlines
Deal found 8/13$283

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 August 16, 2025.
Use the filters below to find and compare flights from Denver to Key West that are best for you.

Fly from

Denver

Fly to

Key West

Route

Depart

Return

Price

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 10/28

5:45 am-4:18 pm

1 stop8h 33m

Key West

Tue 11/4

6:33 pm-11:09 pm

1 stop6h 36m

$231

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 10/21

12:50 pm-8:06 pm

1 stop5h 16m

Key West

Wed 10/22

1:57 pm-5:49 pm

1 stop5h 52m

$237

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Sat 9/13

12:10 pm-8:07 pm

1 stop5h 57m

Key West

Tue 9/16

6:00 pm-9:52 pm

1 stop5h 52m

$260

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Wed 10/22

12:50 pm-8:06 pm

1 stop5h 16m

Key West

Thu 10/23

6:17 pm-11:59 pm

1 stop7h 42m

$260

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Sat 9/13

12:10 pm-8:07 pm

1 stop5h 57m

Key West

Wed 9/17

6:00 pm-9:52 pm

1 stop5h 52m

$260

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 10/21

12:50 pm-8:06 pm

1 stop5h 16m

Key West

Thu 10/23

6:17 pm-11:59 pm

1 stop7h 42m

$260

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Thu 10/30

11:26 am-8:06 pm

1 stop6h 40m

Key West

Wed 11/5

7:40 am-1:52 pm

1 stop8h 12m

$260

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Wed 10/29

5:45 am-7:22 pm

2 stops11h 37m

Key West

Mon 11/3

6:33 pm-11:09 pm

1 stop6h 36m

$262

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Fri 10/3

5:44 am-6:59 pm

2 stops11h 15m

Key West

Tue 10/7

5:47 pm-10:56 pm

1 stop7h 09m

$262

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 10/28

7:00 am-5:21 pm

1 stop8h 21m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 17 results
1
2

Best time to book a flight from Denver to Key West

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Key West. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Key West, you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Denver to Key West (average of $328). Flying from Denver 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.

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 August 16, 2025.
Read through reviews of airlines operating flights from Denver to Key West, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
7,985 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
8,916 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
7,985 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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 Denver 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 are the cheapest airlines flying from Denver to Key West round-trip?

    Our cheapest airline available from Denver to Key West is American Airlines. Our recent data shows that you can find tickets from as low as $230 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $236 and $357 round-trip. Users have found that American Airlines is 43% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Denver to Key West (average of $328). Flying from Denver 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.

See more FAQs

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Top 3 airlines flying from Denver to Key West

Discover the top 3 airlines that operate flights from Denver 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 August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$230Average$375FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$386FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$357Average$562FlexibilityNo cancel feeOn-time69%

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