HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$79+ Cheap flights from Florida Keys to Colorado

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — DEN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Florida Keys to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Florida Keys to Colorado

Cheapest flights from Florida Keys to Colorado
Explore the most affordable flight options available from Florida Keys to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:25 amMIA - DEN
Nonstop4h 43mFrontier
Mon 12/811:25 pmDEN - MIA
Nonstop3h 54mFrontier
Deal found 10/28$108
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Mon 11/246:55 amMIA - DEN
1 stop18h 49mFrontier
Wed 12/311:25 pmDEN - MIA
Nonstop3h 54mFrontier
Deal found 10/29$111
This WAYA deal was found by Cheapflights users on 10/29. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:15 amMIA - DEN
Nonstop4h 48mMultiple Airlines
Tue 12/212:59 amDEN - MIA
1 stop8h 24mMultiple Airlines
Deal found 10/29$112
This Frontier deal was found by Cheapflights users on 10/29. 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 11/1311:00 amMIA - DEN
1 stop12h 09mFrontier
Fri 11/1412:34 amDEN - MIA
Nonstop3h 45mFrontier
Deal found 10/29$113
This Frontier deal was found by Cheapflights users on 10/30. 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 12/106:00 amMIA - DEN
Nonstop4h 43mFrontier
Mon 12/156:00 amDEN - MIA
1 stop11h 39mFrontier
Deal found 10/30$114
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:25 amMIA - DEN
Nonstop4h 43mFrontier
Thu 12/116:00 amDEN - MIA
1 stop8h 54mFrontier
Deal found 10/28$115
This Flightnetwork deal was found by Cheapflights users on 10/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:26 pmMIA - DEN
1 stop20h 36mFrontier
Wed 12/1011:25 pmDEN - MIA
Nonstop3h 54mFrontier
Deal found 10/28$116
This Frontier deal was found by Cheapflights users on 10/30. 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.
Sat 12/66:00 amMIA - DEN
Nonstop4h 43mFrontier
Tue 12/911:25 pmDEN - MIA
Nonstop3h 54mFrontier
Deal found 10/30$118
This Frontier deal was found by Cheapflights users on 10/29. 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.
Sat 11/156:00 amMIA - DEN
Nonstop4h 33mFrontier
Sat 11/1512:59 amDEN - MIA
1 stop7h 12mFrontier
Deal found 10/29$122
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:03 pmMIA - DEN
1 stop30h 20mFrontier
Thu 12/411:25 pmDEN - MIA
Nonstop3h 54mFrontier
Deal found 10/27$123
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Sat 11/158:00 amMIA - DEN
1 stop25h 36mFrontier
Sun 11/1612:34 amDEN - MIA
Nonstop3h 45mFrontier
Deal found 10/30$124
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/132:42 pmEYW - DEN
1 stop9h 29mUnited Airlines
Tue 1/136:00 amDEN - EYW
1 stop7h 17mUnited Airlines
Deal found 10/29$231

Cheap flight deals from Florida Keys to Colorado

Keep the following information in mind while searching for Florida Keys to Colorado flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$111
(Kiwi.com)

One-way from

$79
(United Airlines)

Popular in

July

Cheapest in

April

Average price

$358
Provider with most accurate pricing for Key West-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-Denver Intl flights.
Search Deals
From Florida Keys to Colorado
Search Deals
One-way flight from Florida Keys to Colorado
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Florida Keys to Colorado 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 October 30, 2025.
Use the filters below to find and compare flights from Florida Keys to Colorado that are best for you.

Fly from

Florida Keys

Fly to

Colorado

Route

Depart

Return

Price

MiamiDenver

MIA - DEN

MIADEN

Miami

Sun 2/15

6:25 am-9:08 am

Nonstop4h 43m

Denver Intl

Tue 2/24

11:25 pm-5:19 am

Nonstop3h 54m

$134

MiamiDenver

MIA - DEN

MIADEN

Miami

Fri 12/12

7:35 am-3:39 pm

1 stop10h 04m

Denver Intl

Mon 12/15

6:00 am-7:39 pm

1 stop11h 39m

$141

MiamiDenver

MIA - DEN

MIADEN

Miami

Mon 12/8

7:05 am-3:39 pm

1 stop10h 34m

Denver Intl

Mon 12/15

6:00 am-7:39 pm

1 stop11h 39m

$144

MiamiDenver

MIA - DEN

MIADEN

Miami

Thu 2/5

7:35 am-2:50 pm

2 stops9h 15m

Denver Intl

Mon 2/9

7:55 am-4:30 pm

1 stop6h 35m

$182

Key WestDenver

EYW - DEN

EYWDEN

Key West

Sat 12/13

2:42 pm-10:11 pm

1 stop9h 29m

Denver Intl

Tue 1/13

6:00 am-3:17 pm

1 stop7h 17m

$231

MiamiDenver

MIA - DEN

MIADEN

Miami

Tue 2/24

6:00 am-12:04 pm

1 stop8h 04m

Denver Intl

Wed 2/25

4:40 pm-12:57 am

1 stop6h 17m

$237

MiamiDenver

MIA - DEN

MIADEN

Miami

Fri 2/20

7:35 pm-12:24 am

1 stop6h 49m

Denver Intl

Mon 2/23

6:25 pm-6:15 am

1 stop9h 50m

$237

MiamiMontrose

MIA - MTJ

MIAMTJ

Miami

Sun 1/18

9:15 am-2:05 pm

1 stop6h 50m

Montrose County

Sun 1/25

2:57 pm-12:58 am

1 stop8h 01m

$249

MiamiHayden

MIA - HDN

MIAHDN

Miami

Wed 1/7

7:15 am-12:41 pm

1 stop7h 26m

Hayden Yampa Valley

Mon 1/12

1:46 pm-10:48 pm

1 stop7h 02m

$249

MiamiGrand Junction

MIA - GJT

MIAGJT

Miami

Wed 12/10

10:32 am-10:47 pm

2 stops14h 15m

Grand Junction Regnl

Mon 12/15

1:15 pm-12:46 am

2 stops9h 31m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Florida Keys to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Florida Keys 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 Florida Keys to Colorado

What is the cheapest month to book a flight from Florida Keys to Colorado?

Currently, February is the cheapest month in which you can book a flight from Florida Keys to Colorado (average of $218). Flying from Florida Keys to Colorado in July is currently the most expensive (average of $404). 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 EOA to CO?

Find hourly flight availability from Florida Keys to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s typically best to fly out from Florida Keys to Colorado in the evening. Doing so could potentially save you 52% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated October 30, 2025.
Read through reviews of airlines operating flights from Florida Keys to Colorado, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Florida Keys to Colorado. 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 Florida Keys to Colorado?

    Departing from Florida Keys to Colorado will take you 4h 43m. There are 1707 mi between Florida Keys and Colorado. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Florida Keys to Colorado one-way?

    One-way options have recently been found by users for as low as $79 on United Airlines. Other airlines that offer cheap prices include Southwest from $80 and Delta from $125 one-way.

  • Can I find deals for flights from Florida Keys to Colorado that include hotel bookings?

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

  • How can I find direct flights from Florida Keys to Colorado?

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

  • Can I find deals for business class flights from Florida Keys to Colorado?

    Yes. Cheapflights offers flight deals from Florida Keys to Colorado 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 Florida Keys to Colorado?

    Currently, February is the cheapest month in which you can book a flight from Florida Keys to Colorado (average of $218). Flying from Florida Keys to Colorado in July is currently the most expensive (average of $404). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Florida Keys to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Fort Lauderdale to Newark flights
Fort Lauderdale to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
Miami to John F Kennedy Intl flights
Miami to Newark flights
Fort Lauderdale to LaGuardia flights
Tampa to John F Kennedy Intl flights
Tampa to LaGuardia flights
Miami to LaGuardia flights
Orlando to Newark flights
Orlando to LaGuardia flights
Tampa to Newark flights
Orlando to Las Vegas flights
Fort Lauderdale to Dallas/Fort Worth flights
Orlando to Denver flights
Miami to Denver flights
West Palm Beach to John F Kennedy Intl flights
Fort Lauderdale to Atlanta flights
Orlando to Los Angeles flights
Orlando to Dallas/Fort Worth flights
Fort Lauderdale to Las Vegas flights
West Palm Beach to Newark flights
Tampa to Boston flights
Miami to Dallas/Fort Worth flights
Tampa to Dallas/Fort Worth flights
Tampa to Denver flights
Tampa to Las Vegas flights
Orlando to Reagan-National flights
Orlando to Dulles Intl flights
Fort Lauderdale to Los Angeles flights
Miami to Atlanta flights
Miami to Los Angeles flights
Orlando to Seattle flights
Miami to Las Vegas flights
West Palm Beach to LaGuardia flights
Fort Lauderdale to O'Hare Intl flights
Miami to Reagan-National flights
Fort Lauderdale to Denver flights
Tampa to O'Hare Intl flights
Jacksonville to LaGuardia flights
Miami to O'Hare Intl flights
Orlando to Baltimore flights
Jacksonville to John F Kennedy Intl flights
Fort Lauderdale to Baltimore flights
Orlando to Boston flights
Tampa to Atlanta flights
Tampa to Dulles Intl flights
Orlando to Sky Harbor Intl flights
Orlando to O'Hare Intl flights
Jacksonville to Dallas/Fort Worth flights

Top 2 airlines flying from Florida Keys to Colorado

Discover the top 2 airlines that operate flights from Florida Keys to Colorado. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$230Average$354FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$468FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.