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$147+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EYW
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$231
(American Airlines)

One-way from

$188
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$519
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. 4% potential increase in price ($17 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 June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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 8/137:20 amDEN - EYW
1 stop7h 02mAmerican Airlines
Tue 8/191:13 pmEYW - DEN
1 stop7h 54mAmerican Airlines
Deal found 6/11$231
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 8/1410:41 amDEN - EYW
1 stop7h 31mDelta
Mon 8/186:22 pmEYW - DEN
1 stop7h 53mDelta
Deal found 6/11$289
This United Airlines deal was found by Cheapflights users on 6/10. 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 6/2411:59 pmDEN - EYW
1 stop10h 54mUnited Airlines
Tue 7/12:12 pmEYW - DEN
1 stop11h 09mUnited Airlines
Deal found 6/10$303
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Wed 7/2311:06 amDEN - EYW
1 stop26h 24mAllegiant Air
Sun 7/274:20 pmEYW - DEN
1 stop24h 55mAllegiant Air
Deal found 6/9$383
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 8/75:42 pmDEN - EYW
2 stops17h 25mMultiple Airlines
Sun 8/104:20 pmEYW - DEN
1 stop27h 34mMultiple Airlines
Deal found 6/11$396
This JetBlue deal was found by Cheapflights users on 6/11. 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.
Thu 10/3011:59 pmDEN - EYW
1 stop9h 23mJetBlue
Sun 11/212:07 pmEYW - DEN
1 stop12h 57mJetBlue
Deal found 6/11$398

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 June 12, 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

Wed 8/13

7:20 am-4:22 pm

1 stop7h 02m

Key West

Tue 8/19

1:13 pm-7:07 pm

1 stop7h 54m

$231

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Thu 8/14

10:41 am-8:12 pm

1 stop7h 31m

Key West

Mon 8/18

6:22 pm-12:15 am

1 stop7h 53m

$289

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 6/24

11:59 pm-12:53 pm

1 stop10h 54m

Key West

Tue 7/1

2:12 pm-11:21 pm

1 stop11h 09m

$303

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Wed 7/23

11:06 am-3:30 pm

1 stop26h 24m

Key West

Sun 7/27

4:20 pm-3:15 pm

1 stop24h 55m

$383

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Thu 8/7

5:42 pm-1:07 pm

2 stops17h 25m

Key West

Sun 8/10

4:20 pm-5:54 pm

1 stop27h 34m

$396

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Thu 10/30

11:59 pm-11:22 am

1 stop9h 23m

Key West

Sun 11/2

12:07 pm-11:04 pm

1 stop12h 57m

$398

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Thu 12/4

8:33 am-1:39 pm

1 stop27h 06m

$147

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Tue 7/1

10:49 am-7:39 pm

1 stop6h 50m

$196

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Mon 7/14

11:59 pm-2:00 pm

1 stop12h 01m

$242

DenverKey West

DEN - EYW

DENEYW

Denver Intl

Mon 6/30

9:39 am-9:22 am

3 stops21h 43m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results
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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 June 9, 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 $493). 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.

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 June 12, 2025.
To help decide which airline to fly from Denver to Key West, see what other customers have to say about Breeze Airways, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,946 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,790 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Allegiant Air
7.3
Good
725 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
American Airlines
7.2
Good
10,000 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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 $231 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $289 and $303 round-trip. Users have found that American Airlines is 45% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $188. Users have also found prices from $196 and $242 on Delta and United Airlines, respectively.

  • 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 $493). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$235Average$382FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$357Average$568FlexibilityNo cancel feeOn-time69%

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