What is the cheapest airline that flies from United States to Florida Keys?

Frontier, Spirit Airlines, and Delta are the most popular carriers operating from United States to Florida Keys

How many flights depart from United States to Florida Keys on average per day?

253 flights are operational daily from United States to Florida Keys as of February 2026. The most popular departure time for this route is 3:00PM, with 63% of flights per day taking off in the afternoon.

What airlines fly to Florida Keys?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Florida Keys from United States according to our data. American Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 8 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

How many flights depart from United States to Florida Keys on average per week?

1,777 flights are operational weekly from United States to Florida Keys as of February 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

How long is the flight from United States to Florida Keys?

On average, it takes 7h 10m to fly from United States to Florida Keys if you fly out of Boston (the most popular airport in United States) and into Copenhagen (the most popular airport in Florida Keys). If you’re flying out of New York and into Copenhagen, then the flight time is around 7h 35m.

When did momondo last update prices for flights from United States to Florida Keys?

Prices for flights from United States to Florida Keys were last updated today.

How many operators does momondo search for flights from United States to Florida Keys?

There are 9 operators available for flights from United States to Florida Keys as of February 2026.

How old do you have to be to fly from United States to Florida Keys?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from United States to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$37 Cheap Flights from the United States to Florida Keys in 2026

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Find the cheapest flights from the United States to Florida Keys

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One-way

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Recent round-trip flight deals from the United States to Florida Keys

Enter your travel dates to find the best prices.

7:24 pm - 10:34 pm

PHL

MIA

3h 10mnonstop

10:53 am - 1:57 pm

MIA

PHL

3h 04mnonstop

$73Frontier

Mon, Apr 20 - Tue, Apr 21

9:00 am - 11:59 am

PHL

MIA

2h 59mnonstop

1:13 pm - 4:10 pm

MIA

PHL

2h 57mnonstop

$74Frontier

Tue, Apr 21 - Wed, Apr 29

8:45 pm - 11:59 pm

LGA

MIA

3h 14mnonstop

6:06 am - 9:00 am

MIA

LGA

2h 54mnonstop

$75Spirit Airlines

Mon, Mar 9 - Sat, Mar 14

10:55 pm - 2:09 am

LGA

MIA

3h 14mnonstop

6:06 am - 9:00 am

MIA

LGA

2h 54mnonstop

$76Multiple Airlines

Sat, Mar 14 - Tue, Mar 17

8:45 pm - 11:59 pm

LGA

MIA

3h 14mnonstop

6:49 pm - 10:00 pm

MIA

LGA

3h 11mnonstop

$77Multiple Airlines

Sat, Mar 7 - Fri, Mar 13

8:30 pm - 11:39 pm

LGA

MIA

3h 09mnonstop

4:05 pm - 7:00 pm

MIA

LGA

2h 55mnonstop

$79Spirit Airlines

Sat, Mar 14 - Wed, Mar 18

3:00 pm - 5:40 pm

DCA

MIA

2h 40mnonstop

11:22 am - 2:03 pm

MIA

DCA

2h 41mnonstop

$137Delta

Sat, Apr 18 - Thu, Apr 23

7:00 am - 9:45 am

DCA

MIA

2h 45mnonstop

8:45 pm - 11:28 pm

MIA

DCA

2h 43mnonstop

$138American Airlines

Wed, Apr 8 - Wed, Apr 15

2:54 pm - 5:49 pm

DCA

MIA

2h 55mnonstop

6:35 am - 9:14 am

MIA

DCA

2h 39mnonstop

$145American Airlines

Wed, Apr 22 - Sat, Apr 25

10:59 pm - 6:49 am

LAX

MIA

4h 50mnonstop

6:30 pm - 9:25 pm

MIA

LAX

5h 55mnonstop

$219Delta

Tue, Mar 17 - Thu, Apr 16

Frontier flights from United States to Florida Keys

Our best Frontier deals on United States to Florida Keys flight tickets

Frontier

Apr 20

PHL7:24 pmPhiladelphia

3h 10m

MIA10:34 pmMiami

Apr 21

MIA10:53 amMiami

3h 04m

PHL1:57 pmPhiladelphia

$73

Frontier

Apr 21

PHL9:00 amPhiladelphia

2h 59m

MIA11:59 amMiami

Apr 29

MIA1:13 pmMiami

2h 57m

PHL4:10 pmPhiladelphia

$74

Frontier

Mar 16

JFK11:02 amNew York John F Kennedy Intl

3h 19m

MIA2:21 pmMiami

Mar 17

MIA7:00 amMiami

3h 07m

JFK10:07 amNew York John F Kennedy Intl

$75

Spirit Airlines flights from United States to Florida Keys

Our best Spirit Airlines deals on United States to Florida Keys flight tickets

Spirit Airlines

Mar 9

LGA8:45 pmNew York LaGuardia

3h 14m

MIA11:59 pmMiami

Mar 14

MIA6:06 amMiami

2h 54m

LGA9:00 amNew York LaGuardia

$75

Spirit Airlines

Mar 14

LGA8:30 pmNew York LaGuardia

3h 09m

MIA11:39 pmMiami

Mar 18

MIA4:05 pmMiami

2h 55m

LGA7:00 pmNew York LaGuardia

$79

Spirit Airlines

Mar 3

LGA8:45 pmNew York LaGuardia

3h 14m

MIA11:59 pmMiami

Mar 17

MIA6:06 amMiami

2h 54m

LGA9:00 amNew York LaGuardia

$80

momondo Fare Finder

Use the filters below to find and compare flights from the United States to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaMiami

PHL - MIA

PHLMIA

Philadelphia

Mon 4/20

7:24 pm-10:34 pm

Nonstop3h 10m

Miami

Tue 4/21

10:53 am-1:57 pm

Nonstop3h 04m

$73

PhiladelphiaMiami

PHL - MIA

PHLMIA

Philadelphia

Tue 4/21

9:00 am-11:59 am

Nonstop2h 59m

Miami

Wed 4/29

1:13 pm-4:10 pm

Nonstop2h 57m

$74

New YorkMiami

LGA - MIA

LGAMIA

New York LaGuardia

Mon 3/9

8:45 pm-11:59 pm

Nonstop3h 14m

Miami

Sat 3/14

6:06 am-9:00 am

Nonstop2h 54m

$75

New YorkMiami

LGA - MIA

LGAMIA

New York LaGuardia

Sat 3/14

10:55 pm-2:09 am

Nonstop3h 14m

Miami

Tue 3/17

6:06 am-9:00 am

Nonstop2h 54m

$76

New YorkMiami

LGA - MIA

LGAMIA

New York LaGuardia

Sat 3/7

8:45 pm-11:59 pm

Nonstop3h 14m

Miami

Fri 3/13

6:49 pm-10:00 pm

Nonstop3h 11m

$77

New YorkMiami

LGA - MIA

LGAMIA

New York LaGuardia

Sat 3/14

8:30 pm-11:39 pm

Nonstop3h 09m

Miami

Wed 3/18

4:05 pm-7:00 pm

Nonstop2h 55m

$79

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 4/18

3:00 pm-5:40 pm

Nonstop2h 40m

Miami

Thu 4/23

11:22 am-2:03 pm

Nonstop2h 41m

$137

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Wed 4/8

7:00 am-9:45 am

Nonstop2h 45m

Miami

Wed 4/15

8:45 pm-11:28 pm

Nonstop2h 43m

$138

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Wed 4/22

2:54 pm-5:49 pm

Nonstop2h 55m

Miami

Sat 4/25

6:35 am-9:14 am

Nonstop2h 39m

$145

Los AngelesMiami

LAX - MIA

LAXMIA

Los Angeles

Tue 3/17

10:59 pm-6:49 am

Nonstop4h 50m

Miami

Thu 4/16

6:30 pm-9:25 pm

Nonstop5h 55m

$219

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of October is another great option to travel to Florida Keys, with average flight prices from United States averaging around $183.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from United States to Florida Keys is on a Saturday when prices can be found for as low as $524. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $566.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the afternoon. momondo users have found flights departing from United States to Florida Keys in the afternoon for as low as $479. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $569.

What is the cheapest United States to Florida Keys flight route?

Fly from Orlando to Key West for the best United States - Florida Keys flight prices

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

You are more likely to see cheaper flights to Florida Keys from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $218 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from United States for as low as $167 on momondo.

What cabin class options are available on United States to Florida Keys flights?

There are 4 cabin classes available to choose from on United States to Florida Keys flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between United States to Florida Keys.

Cheap United States to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Florida Keys

Fastest flight time	0h 50m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from United States to Florida Keys takes 0h 50m

Direct flights go from United States to Florida Keys every day.

There are 3 airports in Florida Keys. From United States there are direct flights to Miami (MIA).

Search flight deals

When did momondo last update prices for flights from United States to Florida Keys?
Prices for flights from United States to Florida Keys were last updated today.
How many operators does momondo search for flights from United States to Florida Keys?
There are 9 operators available for flights from United States to Florida Keys as of February 2026.
How old do you have to be to fly from United States to Florida Keys?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from United States to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to Florida Keys?
Based on momondo bookings for flights between United States and Florida Keys, the leading plane model is Airbus A321neo, making up 14.70% of the total bookings. Other popular models include Airbus A320-100/200 with 13.11%, Boeing 787-9 Dreamliner with 11.77%, and Airbus A320neo with 7.84%.

Best airlines flying from United States to Florida Keys

Compare and see reviews for airlines that fly from United States to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
Silver Airways	PriceFrom $86	Free Cancellation	Rating 5.7 233 reviews	Search Silver Airways flights
United Airlines	PriceFrom $86	Free Cancellation	Rating 7.4 9,339 reviews	Search United Airlines flights
Spirit Airlines	PriceFrom $95	Free Cancellation	Rating 6.3 8,487 reviews	Search Spirit Airlines flights
Breeze Airways	PriceFrom $98	Free Cancellation	Rating 8.1 271 reviews	Search Breeze Airways flights
JetBlue	PriceFrom $117	Free Cancellation	Rating 7.2 2,897 reviews	Search JetBlue flights
Delta	PriceFrom $148	Free Cancellation	Rating 7.9 8,237 reviews	Search Delta flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.2 11,341 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Florida Keys?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United States to Florida Keys. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from United States to Florida Keys with flexible booking policies on momondo?

Flights from United States to Florida Keys with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United States to Florida Keys?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Florida Keys from United States.

I’m not ready to book a flight from United States to Florida Keys right now. Can momondo alert me if prices change?

If you are not ready to book a flight from United States to Florida Keys now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Florida Keys and let you know when they change.

An easier way to manage your Florida Keys trip

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Popular cities in Florida Keys

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $48

Flights to Miamifrom $49

Flights to Orlandofrom $41

Flights to Chicagofrom $58

Flights to San Franciscofrom $70

Flights to Las Vegasfrom $30

Flights to Washington, D.C.from $56

Flights to Bostonfrom $78

Flights to Atlantafrom $49

Flights to Dallasfrom $59

Flights to Seattlefrom $60

Cheap flights from the United States to Florida Keys from $37

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Florida Keys departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from the United States to Florida Keys

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Frontier flights from United States to Florida Keys

Our best Frontier deals on United States to Florida Keys flight tickets

Spirit Airlines flights from United States to Florida Keys

Our best Spirit Airlines deals on United States to Florida Keys flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from the United States to Florida Keys that are best for you.

See travel insights to Florida Keys from

How to get the cheapest flight ticket from United States to Florida Keys

What is the cheapest month to fly to Florida Keys?

What is the cheapest day to depart on your flight to Florida Keys?

What is the cheapest time of day to depart on your flight to Florida Keys?

What is the cheapest United States to Florida Keys flight route?

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

What cabin class options are available on United States to Florida Keys flights?

Can stopping save me money on United States to Florida Keys flights?

What is the cheapest airline that flies from United States to Florida Keys?

What airlines fly to Florida Keys?

How many flights depart from United States to Florida Keys on average per day?

How many flights depart from United States to Florida Keys on average per week?

How long is the flight from United States to Florida Keys?

Cheap United States to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Florida Keys

Fastest flight time

Direct flights

Airports in Florida Keys

Best airlines flying from United States to Florida Keys

Compare and see reviews for airlines that fly from United States to Florida Keys with momondo

Why use momondo?

Why should I use momondo to find a flight deal from United States to Florida Keys?

Can I find flights from United States to Florida Keys with flexible booking policies on momondo?

How can momondo help me find flights from United States to Florida Keys?

I’m not ready to book a flight from United States to Florida Keys right now. Can momondo alert me if prices change?

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Popular flights according to clicks in the last 7 days on momondo

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