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Find cheap flights from Denver to Florida Keys from $45

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 5/18. 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.
1 adult
0 bags
Fri 5/24
Fri 5/31

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Best Florida Keys Flight Deals

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

Miami
Miami1 stop$89
Key West
Key West1 stop$235

Good to know

Low season

September

High season

March

Cheapest flight

$45
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 24% increase in price.
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 to Florida Keys from Denver 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 to Florida Keys with an airline and back to Denver 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 to Florida Keys from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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 $109 one-way - $252 round-trip

Top 5 airlines serving from Denver to Florida Keys

 
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
DeltaOverall score based on 11004 reviews
7.5food
8.2boarding
8.0entertainment
8.6crew
7.9comfort
Airline reviews

They did a fine job. Can't wait to use Delta in the future.

10.0 ExcellentRobert, Apr 2024BOS - RSW
Read more about Delta reviews

They did a fine job. Can't wait to use Delta in the future.

Seat back monitors and outlets were dead and not working.

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

This flight was supposed to land at 10:55 pm on January 14th. Instead, it landed at 3:20 am on Monday, January 15th, resulting in a completely lost day due to not going to bed until 5:00 am.

Boarding super slow with people allowed to linger in aisles

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

First time travel in economy and the worst experience I ever had ! Shame on paying 600 dollars to be in a tuna can ! Service was terrible no even water no even class no even matters your flight attendants were lazy and sloppy very bad experience! After all these years traveling in first and once I try this cause I need to go to a destination for an emergency wow shame on you !

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

Too many fees (but that seems to apply to all airlines nowadays)

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Wheelchair assistance was not complete. The person left me at the departure gate without informing the groundstaff of my requirements. I had to walk to the departure counter to ask for help to reach the plane door. The crew informed me that in future they were not allowed to help passengers like me, senior citizen and Wheelchair passenger with placing their carry on bags in the overhead compartments!

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

Seats are way too snug for my hip to knee ratio and the recline on the seat in front of me made my experience worst. My legs had no room at all. Not a plane for people 6 ft or over unless you fly first class.

Delayed for maintenance issue?? Should have been addressed before boarding. Put my bag on an earlier flight, but didn’t ask if I wanted to change to an earlier flight. Arrived to find my bag locked up and no agent to be found when I landed.

We learned certain countries (a few) require a notarized letter from an ex to give permission for children to travel to those countries with the other spouse together with birth certificates. To find this out one hour before flying—not good. Nowhere is it documented by the airlines though they require it. Make sure about all documentation required.

It was a good flight. Of course it was full, but it went well.

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

We are gluten free, there were not any available complimentary gluten free options.

Flight delayed 3 times. We were directed to go to a gate across from our gate. The plane wasn't there yet so we had to wait for it to arrive, then deplane everyone and then wait again for the plane to be cleaned. After 45 minuites we were allowed on the plane. The first plane had mechanical issues. The 2nd plane must have had bathroom issues because we did not have any food service whatsoever. No snack or beverage. That made for a long time not to have anything considering that we had just made it to the original gate and we had no time to stop to get food or a drink. Then we didn't want to leave the gate to get food because we wouldn't know how much longer the delay would be. Then the next gate change. Had we been told that the total time would have been aprox 45 min later we would have left to get food and a beverage. We had to wait again for the okay to the pilot to take off so we were on the runway for another 20 min. Overall, we were delayed over 2 hours which felt like 4 hours.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Me and my husband experienced very bad in American Airlines. We missed our flight going to Doha. The American Airlines was delayed we arrived already 10:27pm. Supposed to be 9:40 pm. So what they did they rebooked our flight and they gave us a hotel. When we arrived at the hotel the front desk said it was fully booked already. Oh my gosh! I said why did you accept the booking if it's fully booked. The guy said that's American Airlines they just book even it's already full. That's 2am already, we have nothing to do so, we decided to go another hotel. We pay the room, food and taxi. Pls give an action on this matter. Refund our expenses and give us more compensation. Not only our room, food, taxi but also our efforts, tiredness looking for a room that can accommodate us.

Horrible. Flight was delayed and very bumpy. I was super unhappy

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

Absolutely filthy flight and not equipped for a trans US

Overall okay. Ipgrades ate worthless anymore. Wish I’d not been so loyal To them for so many years. Platinum many years. Gold for life. Usually 20th-30th on upgrade list.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

The weight limit per bag was really low - 40 lbs - so we had to pay extra. Then, they said their carry on size was 14x18x8, and we measured our bag very carefully. It was within the limit, yet they said it was too big, so we ended up paying an extra $100 for that too!! So it wasn’t the cheap flight we thought it would be. Then, they moved up our initial flight to depart 3 hours earlier which meant we had to be out on the road by 7 am and then have a 6 hour layover and we got home at 2am. It was a grueling day. I won’t be flying with them again.

Overall it was a good experience. Stewards were very kind and professional. The departure and arrival times were as promised. Plane was clean.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

My experience was above excellent!!!! First the lady that pushed me in the wheelchair to the gate was outstanding!!! Then the ladies at the gate went over and beyond, by helping me fill out the immigration form! I would not have been able to get to Guatemala without their help!!! God bless them all! They were amazing 🙏❤️🙏

First....my trip was from Ft. Myers to Philly (not the other way around). Plane was clean, staff was friendly and flight was efficient with boarding and flight time. Thumbs up all around.

Early departure and arrival. Cabin very cold. Waited a while for luggage to come out

The no frills ticket price. The seats are very uncomfortable.

My flight experience was OK. The crew are friendly. The Flight was smooth. One thing that didn’t sit well with me was when I was checking in from RSW to head to Nashville the ticket agent told me I didn’t have a seat assignment and asked if I wanted to upgrade to first class for $50. I said no. I was placed in the third row middle seat. Upon taking off the flight attendant asked if anyone wanted to move. He specifically mentioned the third row was the worst because the lack of legroom. There were 70 open seats on the flight. Just wondering why with 70 open seats the ticket agent would place me in a middle seat in the worst row.

Left Denver late, then sat on tarmac 30 min after arrival

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

Bought seats on the flight and they were supposed to be 2 and a jumpseat. Plane clearly changed and it was a regular 3 seat row. Asked for a refund and was denied. If I wanted to sit next to someone else I wouldn't have bought the seats..

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

It’s a cheap airline and I wish if they had better seats.

Seats are cramped and uncomfortable. You have to pay for everything and it is very expensive.

For a busy travel season, everything was clearly marked, correct, and smooth. My favorite travel description is “UNEVENTFUL,” and this trip met the mark!

The flight and crew were fine. When we (several groups) arrived in Norfolk on Sunday we discovered our bags had not arrived. The staff at norfolk airport was less than helpful. Told us our bags wouldn't arrive until Thursday. When asked what happened they said it bags never made it on the plane and it happened all the time. When asked about reimbursement for replacement items the desk agent said we could try to submit receipts online, but they weren't sure we would be reimbursed. I understand this is a low cost airline, but this was really beyond poor customer service.

Frontier is a no-frills airlines were the focus is low cost. You get basic service so don't set your expectations high. Watch out thought because this airline, like a few others, will try to nickel and dime you.

Flight had mayor delay. The onboarding took forever and was poorly conducted. AC was not in it was very warm in the plane.

Book cheap flights from Denver to Florida Keys

Recent round-trip flight deals

5/14Tue
1 stopFrontier
13h 19mDEN-MIA
5/16Thu
1 stopFrontier
23h 27mMIA-DEN
$89
5/14Tue
1 stopFrontier
13h 19mDEN-MIA
5/18Sat
1 stopFrontier
13h 11mMIA-DEN
$90
5/14Tue
nonstopAmerican Airlines
3h 59mDEN-MIA
5/15Wed
1 stopAmerican Airlines
9h 08mMIA-DEN
$208
5/18Sat
1 stop
14h 13mDEN-MIA
5/25Sat
2 stops
24h 24mMIA-DEN
$211
5/14Tue
nonstopAmerican Airlines
3h 59mDEN-MIA
5/15Wed
nonstopAmerican Airlines
4h 23mMIA-DEN
$215
5/24Fri
1 stop
14h 23mDEN-MIA
5/31Fri
2 stops
29h 25mMIA-DEN
$234
6/2Sun
1 stopDelta
8h 24mDEN-MIA
6/5Wed
1 stopDelta
6h 03mMIA-DEN
$237
8/6Tue
1 stopDelta
5h 49mDEN-MIA
8/13Tue
1 stopDelta
6h 37mMIA-DEN
$238
5/7Tue
2 stopsUnited Airlines
12h 33mDEN-EYW
5/14Tue
1 stopUnited Airlines
9h 04mEYW-DEN
$443
5/7Tue
2 stopsUnited Airlines
12h 33mDEN-EYW
5/16Thu
1 stopUnited Airlines
9h 21mEYW-DEN
$493

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Recent one-way flight deals

5/18Sat
1 stopFrontier
7h 04mDEN-MIA
$45
5/21Tue
nonstopFrontier
4h 01mDEN-MIA
$49
5/14Tue
nonstopAmerican Airlines
3h 59mDEN-MIA
$90
5/20Mon
nonstopAmerican Airlines
3h 58mDEN-MIA
$92
5/24Fri
1 stopSun Country Air
14h 23mDEN-MIA
$118
6/2Sun
1 stopDelta
8h 24mDEN-MIA
$119
6/7Fri
1 stopSun Country Air
15h 55mDEN-MIA
$123
6/6Thu
1 stopDelta
5h 58mDEN-MIA
$139
5/10Fri
nonstopUnited Airlines
4h 13mDEN-MIA
$160
5/14Tue
2 stopsUnited Airlines
21h 42mDEN-MIA
$229

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Last minute flights from Denver to Florida Keys

Last minute flight, train and bus deals

4/28Sun
nonstopFrontier
3h 53mDEN-MIA
4/30Tue
nonstopFrontier
4h 55mMIA-DEN
$133
4/28Sun
multi-stopFrontier
10h 44mDEN-MIA
4/30Tue
nonstopFrontier
4h 55mMIA-DEN
$147
4/26Fri
multi-stopFrontier
10h 34mDEN-MIA
5/4Sat
nonstopFrontier
4h 44mMIA-DEN
$156
4/26Fri
multi-stopFrontier
10h 34mDEN-MIA
5/4Sat
nonstopFrontier
4h 44mMIA-DEN
$157
4/26Fri
multi-stopSun Country Air
15h 03mDEN-MIA
5/3Fri
multi-stopSun Country Air
25h 45mMIA-DEN
$240
4/27Sat
nonstopAmerican Airlines
3h 52mDEN-MIA
5/1Wed
nonstopAmerican Airlines
4h 24mMIA-DEN
$351
4/25Thu
nonstopAmerican Airlines
3h 52mDEN-MIA
5/1Wed
nonstopAmerican Airlines
4h 24mMIA-DEN
$401
4/29Mon
multi-stopDelta
8h 02mDEN-EYW
5/1Wed
multi-stopDelta
6h 52mEYW-DEN
$418
4/27Sat
multi-stopUnited Airlines
8h 34mDEN-MIA
5/3Fri
nonstopUnited Airlines
4h 44mMIA-DEN
$430
4/26Fri
multi-stopDelta
6h 09mDEN-MIA
5/3Fri
multi-stopDelta
6h 04mMIA-DEN
$444

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Denver - Florida Keys Flights

Departure:

Denver (DEN)United States

Return flight deals:

Florida Keys - Denver

Cabin classes:

$257
$262
$310
$34