$63 Find Cheap Flights from Denver to Florida Keys

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Florida Keys departing on 6/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Florida Keys

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Florida Keys, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Florida Keys, as well as popular online travel agencies
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Flights Deals

Best Florida Keys Flight Deals from Denver

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Miami
Miaminonstop$125
Key West
Key West1 stop$231
Miami
Miaminonstop$125
Key West
Key West1 stop$231

Cheap Flights from Denver to Florida Keys

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Florida Keys that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Denver to Florida Keys

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Denver to Florida Keys.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
12:34 am - 6:30 amDEN-MIA
3h 56mnonstop
Frontier Logo
6:00 am - 8:25 amMIA-DEN
4h 25mnonstop
$125Frontier
Find Deal
Sat, Jun 28 - Fri, Jul 4
Frontier Logo
12:34 am - 6:30 amDEN-MIA
3h 56mnonstop
Frontier Logo
6:00 am - 8:21 amMIA-DEN
4h 21mnonstop
$126Frontier
Find Deal
Sun, Aug 3 - Fri, Aug 8
American Airlines Logo
11:53 pm - 5:45 amDEN-MIA
3h 52mnonstop
American Airlines Logo
9:00 am - 11:21 amMIA-DEN
4h 21mnonstop
$210American Airlines
Find Deal
Wed, May 21 - Thu, May 22
Southwest Logo
3:40 pm - 9:40 pmDEN-MIA
4h 00mnonstop
Southwest Logo
6:50 am - 9:05 amMIA-DEN
4h 15mnonstop
$211Southwest
Find Deal
Tue, Jun 24 - Wed, Jul 16
United Airlines Logo
5:55 pm - 11:59 pmDEN-MIA
4h 04mnonstop
United Airlines Logo
3:17 pm - 5:58 pmMIA-DEN
4h 41mnonstop
$213United Airlines
Find Deal
Fri, Jul 4 - Thu, Jul 10
American Airlines Logo
11:40 pm - 5:38 amDEN-MIA
3h 58mnonstop
American Airlines Logo
8:35 pm - 10:54 pmMIA-DEN
4h 19mnonstop
$215American Airlines
Find Deal
Mon, Jun 9 - Tue, Jul 29
United Airlines Logo
5:45 pm - 11:46 pmDEN-MIA
4h 01mnonstop
United Airlines Logo
4:17 pm - 11:30 pmMIA-DEN
9h 13m1 stop
$217United Airlines
Find Deal
Tue, May 20 - Sat, May 24
Southwest Logo
5:00 am - 4:20 pmDEN-MIA
9h 20m1 stop
Southwest Logo
6:50 am - 9:05 amMIA-DEN
4h 15mnonstop
$231Southwest
Find Deal
Tue, Jun 24 - Wed, Jul 16
Delta Logo
12:55 am - 11:41 amDEN-MIA
8h 46m1 stop
Delta Logo
2:12 pm - 8:24 pmMIA-DEN
8h 12m1 stop
$237Delta
Find Deal
Mon, Jun 23 - Wed, Jul 23
Delta Logo
6:25 pm - 6:25 amDEN-MIA
10h 00m1 stop
Delta Logo
8:10 am - 1:57 pmMIA-DEN
7h 47m1 stop
$244Delta
Find Deal
Tue, May 27 - Tue, Jun 3
Useful Info

KAYAK's insights & trends for Denver to Florida Keys flights

Get data-powered insights and trends into flights from Denver to Florida Keys to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Denver to Florida Keys?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Florida Keys, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Florida Keys is September, when tickets cost $201 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $384 and $383 respectively.

What’s the cheapest day of the week to fly from Denver to Florida Keys?

The average price of all round-trip flights from Denver to Florida Keys clicked on KAYAK for each day over the last 12 months.

When flying from Denver to Florida Keys, you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

How far in advance should I book a flight from Denver to Florida Keys?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Florida Keys, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Florida Keys, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.


Good to know

Low seasonSeptember
High seasonMay
Cheapest flight$63
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Denver to Miami

FAQs - booking Florida Keys flights

  • How does KAYAK find such low prices on flights from Denver to Florida Keys?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Florida Keys.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Florida Keys?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Florida Keys is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Florida Keys?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Denver to Florida Keys with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Florida Keys?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Denver to Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Florida Keys?

    The cheapest time of day to fly to Florida Keys is generally in the evening, when round-trip flights cost $278 on average. Morning departures are around 64% more expensive than evening flights, on average. The most expensive time of day to fly to Florida Keys is generally at night, which is peak travel time and where the average cost of a ticket is $535.

Top tips for finding cheap flights to Florida Keys

  • Looking for a cheap flight? 25% of our users found tickets from Denver to the following destinations at these prices or less: Miami $130 one-way - $255 round-trip

Top 5 airlines serving from Denver to Florida Keys

 
See real verified KAYAK customer reviews for airlines flying from Denver to Florida Keys. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Florida Keys? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
7.6Entertainment
8.6Crew
8.2Boarding
8.0Comfort
7.1Food
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

Plz don't take away free bags and free seating

I would have liked to arrive on time - not 5 hours late!

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

It went well. Plane wasn't full. Will be great when assigned seating is in place

Excellent experience. WiFi worked on this leg of My trip

Flight was great, but golf bag never made it until later in the day. Even though I had a nonstop flight it was placed on a different one. They made it right with flight credits and I was able to get it the same day.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

This was a code share Latam Airlines flight - everything very good except there was no seatback entertainment

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

Loyal Delta traveler, but last nights flight was a train wreck. Seated in 1B after multiple delays. Then we couldn’t takeoff because of an issue with the passenger that was ‘not in compliance’ and had to deplane along with the threat if they did not deplane, all the passengers would be required to do so. Finally they were escorted off, but the experience threw off the crew. Disruptive for everyone. Service was a mess, televisions didn’t work, bathroom door kept swinging open during the entire flight whenever empty …

My flight was cancelled twice and the third time I tried to rebook it online I cancelled the flight because it looked like I would get a refund to my credit card. Instead I now have a credit. I was also on hold for three hours waiting for a representative and then disconnected. I will never fly delta again.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Plane still had screens for watching movies. Good selection too.

There was no air on the plane and it was very hot.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Any sort of gluten free snack option would be nice

Would have thought that they would gas up plane before everyone got on board

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Standard. No different than a discount carrier on a short trip.

The flights were terribly delayed and then cancelled which forced us booking another night at the hotel. Very poor management from American Airlines

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Checking in at the counter was very disappointing. The lady had a very bad attitude and smart at me. She had no smile, did not greet me by name, or acknowledge me as a valued customer. Poor reflection of the airline.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

I was pleasantly surprised with an upgrade at boarding. I finally had a mostly gluten free food options and a very attentive attendant.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Booked two aisle seats and were switched to an aisle and middle. Not happy.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Everything you need to know for your flight to Florida Keys

Information on your arrival and departure airports

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