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

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

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

On average, it takes 7h 20m 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.

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

2,046 flights are operational weekly from United States to Florida Keys as of August 2026. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.

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

292 flights are operational daily from United States to Florida Keys as of August 2026. The most popular departure time for this route is 3:00PM, with 61% of flights per day taking off in the afternoon.

What airlines fly to Florida Keys?

American Airlines, Breeze Airways and United Airlines 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 54% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 6 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

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 7 operators available for flights from United States to Florida Keys as of August 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.

$41 Cheap Flights from the United States to Florida Keys in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Florida Keys

Round-trip

One-way

Last minute

Direct

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

Enter your travel dates to find the best prices.

3:01 pm - 5:04 pmATL Atlanta Hartsfield-Jackson-MIA Miami

2h 03mnonstop

5:05 am - 7:20 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 15mnonstop

$81Frontier

Sat, Oct 31 - Sat, Nov 7

7:50 pm - 9:50 pmATL Atlanta Hartsfield-Jackson-MIA Miami

2h 00mnonstop

10:36 pm - 12:45 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 09mnonstop

$81Frontier

Thu, Oct 22 - Tue, Oct 27

7:23 am - 9:26 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 03mnonstop

7:41 am - 9:47 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 06mnonstop

$159American Airlines

Sun, Nov 1 - Sun, Nov 8

5:10 am - 7:10 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 00mnonstop

9:45 pm - 11:57 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 12mnonstop

$159American Airlines

Thu, Feb 18 - Fri, Feb 26

10:57 pm - 12:52 amATL Atlanta Hartsfield-Jackson-MIA Miami

1h 55mnonstop

3:35 pm - 5:36 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 01mnonstop

$159Delta

Mon, Feb 8 - Tue, Feb 16

7:25 am - 9:31 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 06mnonstop

8:05 am - 10:07 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 02mnonstop

$159Delta

Wed, Dec 16 - Wed, Jan 6

2:20 pm - 6:40 pmORD Chicago O'Hare Intl-MIA Miami

3h 20mnonstop

4:06 pm - 6:31 pmMIA Miami-ORD Chicago O'Hare Intl

3h 25mnonstop

$171United Airlines

Mon, Dec 14 - Thu, Jan 7

10:45 am - 2:55 pmORD Chicago O'Hare Intl-MIA Miami

3h 10mnonstop

4:06 pm - 6:31 pmMIA Miami-ORD Chicago O'Hare Intl

3h 25mnonstop

$171United Airlines

Mon, Jan 11 - Tue, Jan 12

5:29 pm - 9:45 pmORD Chicago O'Hare Intl-MIA Miami

3h 16mnonstop

6:57 am - 9:30 amMIA Miami-ORD Chicago O'Hare Intl

3h 33mnonstop

$172Alaska Airlines

Sat, Oct 3 - Mon, Oct 5

12:52 pm - 8:38 pmBOS Boston Logan Intl-MIA Miami

7h 46m1 stop Atlanta Hartsfield-Jackson

9:30 pm - 9:29 amMIA Miami-BOS Boston Logan Intl

35h 59m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

$211Multiple Airlines

Tue, Sep 29 - Thu, Oct 1

Recent last minute flight deals from the United States to Florida Keys

Enter your travel dates to find the best prices.

2:17 pm - 4:21 pmATL Atlanta Hartsfield-Jackson-MIA Miami

2h 04mnonstop

9:43 pm - 11:56 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 13mnonstop

$98Frontier

Wed, Sep 2 - Wed, Sep 9

2:17 pm - 4:21 pmATL Atlanta Hartsfield-Jackson-MIA Miami

2h 04mnonstop

4:30 pm - 6:46 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 16mnonstop

$98Frontier

Wed, Sep 2 - Thu, Oct 1

8:30 pm - 11:50 pmJFK New York John F Kennedy Intl-MIA Miami

3h 20mnonstop

8:36 am - 11:33 amMIA Miami-JFK New York John F Kennedy Intl

2h 57mnonstop

$286American Airlines

Tue, Sep 1 - Wed, Sep 30

6:35 am - 1:11 pmJFK New York John F Kennedy Intl-MIA Miami

6h 36m1 stop Charlotte Douglas

8:36 am - 11:33 amMIA Miami-JFK New York John F Kennedy Intl

2h 57mnonstop

$296American Airlines

Tue, Sep 1 - Wed, Sep 30

7:05 am - 10:25 amJFK New York John F Kennedy Intl-MIA Miami

3h 20mnonstop

7:06 am - 10:00 amMIA Miami-JFK New York John F Kennedy Intl

2h 54mnonstop

$296Delta

Wed, Sep 2 - Tue, Sep 29

3:10 pm - 6:53 pmJFK New York John F Kennedy Intl-MIA Miami

3h 43mnonstop

7:06 am - 10:00 amMIA Miami-JFK New York John F Kennedy Intl

2h 54mnonstop

$296Delta

Wed, Sep 2 - Sat, Sep 26

1:15 pm - 4:31 pmEWR Newark-MIA Miami

3h 16mnonstop

11:25 am - 2:29 pmMIA Miami-EWR Newark

3h 04mnonstop

$306United Airlines

Tue, Sep 1 - Wed, Sep 30

1:30 pm - 10:00 pmLGA New York LaGuardia-MIA Miami

8h 30m1 stop Houston Hobby

12:50 pm - 10:10 pmMIA Miami-LGA New York LaGuardia

9h 20m2 stops Lambert-St Louis Chicago Midway

$344Southwest

Thu, Sep 3 - Tue, Sep 29

1:40 pm - 9:05 pmATL Atlanta Hartsfield-Jackson-MIA Miami

7h 25m1 stop Baltimore/Washington

7:10 am - 4:45 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

9h 35m2 stops Orlando Baltimore/Washington

$348Southwest

Thu, Sep 3 - Wed, Sep 9

3:38 pm - 6:52 pmEWR Newark-MIA Miami

3h 14mnonstop

8:45 am - 11:45 amMIA Miami-EWR Newark

3h 00mnonstop

$366United Airlines

Wed, Sep 2 - Wed, Sep 9

Recent direct flight deals from the United States to Florida Keys

Enter your travel dates to find the best prices.

1:29 pm - 3:25 pmATL Atlanta Hartsfield-Jackson-MIA Miami

1h 56mnonstop

5:05 am - 7:20 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 15mnonstop

$81Frontier

Mon, Oct 26 - Sat, Oct 31

3:01 pm - 5:04 pmATL Atlanta Hartsfield-Jackson-MIA Miami

2h 03mnonstop

5:05 am - 7:20 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 15mnonstop

$81Frontier

Sat, Oct 31 - Sat, Nov 7

7:23 am - 9:26 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 03mnonstop

7:41 am - 9:47 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 06mnonstop

$159American Airlines

Sun, Nov 1 - Sun, Nov 8

5:10 am - 7:10 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 00mnonstop

9:45 pm - 11:57 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 12mnonstop

$159American Airlines

Thu, Feb 18 - Fri, Feb 26

10:57 pm - 12:52 amATL Atlanta Hartsfield-Jackson-MIA Miami

1h 55mnonstop

3:35 pm - 5:36 pmMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 01mnonstop

$159Delta

Mon, Feb 8 - Tue, Feb 16

7:25 am - 9:31 amATL Atlanta Hartsfield-Jackson-MIA Miami

2h 06mnonstop

8:05 am - 10:07 amMIA Miami-ATL Atlanta Hartsfield-Jackson

2h 02mnonstop

$159Delta

Wed, Dec 16 - Wed, Jan 6

2:20 pm - 6:40 pmORD Chicago O'Hare Intl-MIA Miami

3h 20mnonstop

4:06 pm - 6:31 pmMIA Miami-ORD Chicago O'Hare Intl

3h 25mnonstop

$171United Airlines

Mon, Dec 14 - Thu, Jan 7

10:45 am - 2:55 pmORD Chicago O'Hare Intl-MIA Miami

3h 10mnonstop

4:06 pm - 6:31 pmMIA Miami-ORD Chicago O'Hare Intl

3h 25mnonstop

$171United Airlines

Mon, Jan 11 - Tue, Jan 12

5:29 pm - 9:45 pmORD Chicago O'Hare Intl-MIA Miami

3h 16mnonstop

6:57 am - 9:30 amMIA Miami-ORD Chicago O'Hare Intl

3h 33mnonstop

$172Alaska Airlines

Sat, Oct 3 - Mon, Oct 5

5:25 pm - 8:16 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 51mnonstop

12:13 pm - 2:49 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$10,479Alaska Airlines

Thu, Oct 1 - Mon, Oct 5

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Frontier flights from United States to Florida Keys

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

Frontier

Oct 2

ATL8:35 amAtlanta Hartsfield-Jackson

1h 55m

MIA10:30 amMiami

Oct 4

MIA5:32 amMiami

2h 08m

ATL7:40 amAtlanta Hartsfield-Jackson

$81

Frontier

Sep 15

ATL6:35 pmAtlanta Hartsfield-Jackson

2h 03m

MIA8:38 pmMiami

Sep 17

MIA9:30 pmMiami

2h 13m

ATL11:43 pmAtlanta Hartsfield-Jackson

$82

Frontier

Sep 14

ATL2:28 pmAtlanta Hartsfield-Jackson

2h 01m

MIA4:29 pmMiami

Sep 17

MIA5:32 amMiami

2h 08m

ATL7:40 amAtlanta Hartsfield-Jackson

$83

United Airlines flights from United States to Florida Keys

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

United Airlines

Oct 31

ORD2:30 pmChicago O'Hare Intl

3h 20m

MIA6:50 pmMiami

Nov 3

MIA5:28 pmMiami

7h 33m

1 stop

ORD12:01 amChicago O'Hare Intl

$177

United Airlines

Nov 7

ORD2:30 pmChicago O'Hare Intl

3h 20m

MIA6:50 pmMiami

Nov 14

MIA8:45 amMiami

7h 06m

1 stop

ORD2:51 pmChicago O'Hare Intl

$187

United Airlines

Sep 23

ORD7:30 amChicago O'Hare Intl

3h 24m

MIA11:54 amMiami

Sep 26

MIA8:54 amMiami

6h 51m

1 stop

ORD2:45 pmChicago O'Hare Intl

$191

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

Cheapest round-trip

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Sat 10/31

3:01 pm-5:04 pm

Nonstop2h 03m

Miami

Sat 11/7

5:05 am-7:20 am

Nonstop2h 15m

$81

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Thu 10/22

7:50 pm-9:50 pm

Nonstop2h 00m

Miami

Tue 10/27

10:36 pm-12:45 am

Nonstop2h 09m

$81

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Sun 11/1

7:23 am-9:26 am

Nonstop2h 03m

Miami

Sun 11/8

7:41 am-9:47 am

Nonstop2h 06m

$159

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Thu 2/18

5:10 am-7:10 am

Nonstop2h 00m

Miami

Fri 2/26

9:45 pm-11:57 pm

Nonstop2h 12m

$159

Quickest round-trip

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Mon 2/8

10:57 pm-12:52 am

Nonstop1h 55m

Miami

Tue 2/16

3:35 pm-5:36 pm

Nonstop2h 01m

$159

AtlantaMiami

ATL Atlanta Hartsfield-Jackson - MIA Miami

ATLMIA

Atlanta Hartsfield-Jackson

Wed 12/16

7:25 am-9:31 am

Nonstop2h 06m

Miami

Wed 1/6

8:05 am-10:07 am

Nonstop2h 02m

$159

ChicagoMiami

ORD Chicago O'Hare Intl - MIA Miami

ORDMIA

Chicago O'Hare Intl

Mon 12/14

2:20 pm-6:40 pm

Nonstop3h 20m

Miami

Thu 1/7

4:06 pm-6:31 pm

Nonstop3h 25m

$171

ChicagoMiami

ORD Chicago O'Hare Intl - MIA Miami

ORDMIA

Chicago O'Hare Intl

Mon 1/11

10:45 am-2:55 pm

Nonstop3h 10m

Miami

Tue 1/12

4:06 pm-6:31 pm

Nonstop3h 25m

$171

ChicagoMiami

ORD Chicago O'Hare Intl - MIA Miami

ORDMIA

Chicago O'Hare Intl

Sat 10/3

5:29 pm-9:45 pm

Nonstop3h 16m

Miami

Mon 10/5

6:57 am-9:30 am

Nonstop3h 33m

$172

BostonMiami

BOS Boston Logan Intl - MIA Miami

BOSMIA

Boston Logan Intl

Tue 9/29

12:52 pm-8:38 pm

1 stop7h 46m

Miami

Thu 10/1

9:30 pm-9:29 am

2 stops35h 59m

$211

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 September is another great option to travel to Florida Keys, with average flight prices from United States averaging around $301.

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 Wednesday when prices can be found for as low as $562. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $644.

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 $457. 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 $605.

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 $260 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 $209 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

Best Price Found	$41
Fastest flight time	0h 58m
Direct flights	Every day
Airports in Florida Keys	3 airports

The best one-way flight to Florida Keys from United States in the past 72 hours is $41. The best round-trip flight deal from United States to Florida Keys found on momondo in the last 72 hours is $81.

The fastest flight from United States to Florida Keys takes 0h 58m

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

Frequently asked questions about flying from the United States to Florida Keys

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 7 operators available for flights from United States to Florida Keys as of August 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 A320-100/200, making up 15.19% of the total bookings. Other popular models include Airbus A321neo with 12.84%, Airbus A321-100/200 with 9.34%, and Boeing 787-9 Dreamliner with 8.59%.

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
Breeze Airways	PriceFrom $98	Free Cancellation	Rating 8.2 313 reviews	Search Breeze Airways flights
Delta	PriceFrom $148	Free Cancellation	Rating 7.8 8,538 reviews	Search Delta flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 10,136 reviews	Search United Airlines flights
JetBlue	PriceFrom $207	Free Cancellation	Rating 7.1 3,033 reviews	Search JetBlue flights
American Airlines	PriceFrom $261	Free Cancellation	Rating 7.1 12,027 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.