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

275 flights are operational weekly from Illinois to Florida Keys as of August 2025. The most popular departure day for this route is Thu, with 16% of flights per week taking off on this day.

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 Illinois according to our data. American Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

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

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

How long is the flight from Illinois to Florida Keys?

On average, it takes 16h 13m to fly from Illinois to Florida Keys if you fly out of Chicago (the most popular airport in Illinois) and into Incheon Intl Airport (the most popular airport in Florida Keys). If you’re flying out of Moline and into Incheon Intl Airport, then the flight time is around 20h 58m.

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

Prices for flights from Illinois to Florida Keys are updated daily.

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

The number of operators available for flights from Illinois to Florida Keys is 7 as of August 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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.

$50 Cheap Flights from Illinois to Florida Keys in 2025

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Find the cheapest flights from Illinois to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:24 pm - 8:26 pmMDW-MIA

3h 02mnonstop

6:57 pm - 11:46 pmMIA-MDW

5h 49m1 stop

$122Frontier

Find Deal

Mon, Oct 13 - Fri, Oct 17

11:13 am - 11:17 pmORD-MIA

11h 04m1 stop

7:00 am - 9:18 amMIA-ORD

3h 18mnonstop

$123Spirit Airlines

Find Deal

Mon, Sep 8 - Wed, Sep 17

11:00 am - 6:45 pmORD-MIA

6h 45m1 stop

6:00 am - 8:18 amMIA-ORD

3h 18mnonstop

$126

Find Deal

Wed, Oct 8 - Sat, Oct 11

10:27 am - 2:39 pmORD-MIA

3h 12mnonstop

6:59 pm - 12:10 amMIA-ORD

6h 11m1 stop

$127

Find Deal

Mon, Sep 15 - Mon, Sep 22

6:00 am - 10:06 amORD-MIA

3h 06mnonstop

8:15 pm - 10:35 pmMIA-ORD

3h 20mnonstop

$137American Airlines

Find Deal

Sun, Oct 26 - Sat, Nov 1

1:30 pm - 11:05 pmORD-MIA

8h 35m1 stop

6:55 am - 1:05 pmMIA-ORD

7h 10m1 stop

$157Southwest

Find Deal

Fri, Sep 19 - Wed, Sep 24

2:10 pm - 6:10 pmMDW-MIA

3h 00mnonstop

1:00 pm - 7:45 pmMIA-MDW

7h 45m1 stop

$167Southwest

Find Deal

Fri, Sep 12 - Tue, Sep 16

5:28 am - 9:17 amSTL-MIA

2h 49mnonstop

10:09 pm - 11:59 pmMIA-STL

2h 50mnonstop

$174American Airlines

Find Deal

Wed, Sep 17 - Wed, Sep 24

6:00 am - 11:04 amSTL-MIA

4h 04m1 stop

12:09 pm - 3:55 pmMIA-STL

4h 46m1 stop

$197Delta

Find Deal

Tue, Oct 14 - Tue, Oct 21

7:10 am - 3:17 pmSTL-MIA

7h 07m1 stop

12:25 pm - 4:37 pmMIA-STL

5h 12m1 stop

$203Delta

Find Deal

Wed, Sep 17 - Wed, Sep 24

Spirit Airlines flights from Illinois to Florida Keys

Our best Spirit Airlines deals on Illinois to Florida Keys flight tickets

Spirit Airlines

Sep 8

ORD11:13 amChicago O'Hare Intl

11h 04m

1 stop

MIA11:17 pmMiami

Sep 17

MIA7:00 amMiami

3h 18m

ORD9:18 amChicago O'Hare Intl

$123

Find similar

Spirit Airlines

Sep 4

ORD10:27 amChicago O'Hare Intl

3h 12m

MIA2:39 pmMiami

Sep 8

MIA7:00 amMiami

3h 18m

ORD9:18 amChicago O'Hare Intl

$124

Find similar

Spirit Airlines

Oct 25

ORD9:27 amChicago O'Hare Intl

3h 03m

MIA1:30 pmMiami

Oct 30

MIA7:01 pmMiami

4h 45m

1 stop

ORD10:46 pmChicago O'Hare Intl

$125

Find similar

Frontier flights from Illinois to Florida Keys

Our best Frontier deals on Illinois to Florida Keys flight tickets

Frontier

Oct 13

MDW4:24 pmChicago Midway

3h 02m

MIA8:26 pmMiami

Oct 17

MIA6:57 pmMiami

5h 49m

1 stop

MDW11:46 pmChicago Midway

$122

Find similar

Frontier

Oct 18

MDW10:00 amChicago Midway

12h 43m

1 stop

MIA11:43 pmMiami

Oct 20

MIA7:20 amMiami

3h 13m

MDW9:33 amChicago Midway

$123

Find similar

Frontier

Oct 10

MDW12:13 pmChicago Midway

6h 46m

1 stop

MIA7:59 pmMiami

Oct 13

MIA9:26 pmMiami

3h 20m

MDW11:46 pmChicago Midway

$124

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMiami

MDW - MIA

MDWMIA

Chicago Midway

Mon 10/13

4:24 pm-8:26 pm

Nonstop3h 02m

Miami

Fri 10/17

6:57 pm-11:46 pm

1 stop5h 49m

$122

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Mon 9/8

11:13 am-11:17 pm

1 stop11h 04m

Miami

Wed 9/17

7:00 am-9:18 am

Nonstop3h 18m

$123

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 10/8

11:00 am-6:45 pm

1 stop6h 45m

Miami

Sat 10/11

6:00 am-8:18 am

Nonstop3h 18m

$126

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Mon 9/15

10:27 am-2:39 pm

Nonstop3h 12m

Miami

Mon 9/22

6:59 pm-12:10 am

1 stop6h 11m

$127

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sun 10/26

6:00 am-10:06 am

Nonstop3h 06m

Miami

Sat 11/1

8:15 pm-10:35 pm

Nonstop3h 20m

$137

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Fri 9/19

1:30 pm-11:05 pm

1 stop8h 35m

Miami

Wed 9/24

6:55 am-1:05 pm

1 stop7h 10m

$157

ChicagoMiami

MDW - MIA

MDWMIA

Chicago Midway

Fri 9/12

2:10 pm-6:10 pm

Nonstop3h 00m

Miami

Tue 9/16

1:00 pm-7:45 pm

1 stop7h 45m

$167

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Wed 9/17

5:28 am-9:17 am

Nonstop2h 49m

Miami

Wed 9/24

10:09 pm-11:59 pm

Nonstop2h 50m

$174

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 10/14

6:00 am-11:04 am

1 stop4h 04m

Miami

Tue 10/21

12:09 pm-3:55 pm

1 stop4h 46m

$197

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Wed 9/17

7:10 am-3:17 pm

1 stop7h 07m

Miami

Wed 9/24

12:25 pm-4:37 pm

1 stop5h 12m

$203

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How to get the cheapest flight ticket from Illinois 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 Illinois averaging around $230.

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

The cheapest day to depart from Illinois to Florida Keys is on a Thursday when prices can be found for as low as $432. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $456.

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 evening. momondo users have found flights departing from Illinois to Florida Keys in the evening for as low as $247. 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 morning are often more expensive with an average ticket price of $472.

What is the cheapest Illinois to Florida Keys flight route?

Fly from Chicago O'Hare Intl to Key West for the best Illinois - 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $270 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Illinois for as low as $214 on momondo.

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

There are 3 cabin classes available to choose from on Illinois 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 Illinois to Florida Keys flights?

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

Cheap Illinois to Florida Keys flight deals and tips

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

Fastest flight time	2h 39m
Direct flights	Every day
Airports in Florida Keys	1 airport

The fastest flight from Illinois to Florida Keys takes 2h 39m

Direct flights go from Illinois to Florida Keys every day.

There is 1 airport near Florida Keys: Miami (MIA)

Search flight deals

When did momondo last update prices for flights from Illinois to Florida Keys?
Prices for flights from Illinois to Florida Keys are updated daily.
How many operators does momondo search for flights from Illinois to Florida Keys?
The number of operators available for flights from Illinois to Florida Keys is 7 as of August 2025.
How old do you have to be to fly from Illinois to Florida Keys?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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 Illinois to Florida Keys?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Florida Keys is Boeing 737-800 (17.11% of total bookings). The next most popular plane models are Airbus A321neo (8.51%), Airbus A321-100/200 (8.00%), and Boeing 737-900 (7.88%).

Best airlines flying from Illinois to Florida Keys

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $216	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $261	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Illinois to Florida Keys flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Florida Keys that suits you.

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

Yes. momondo allows you to filter the results for Illinois to Florida Keys flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Illinois and Florida Keys by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Illinois to Florida Keys flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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.

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Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Flights to New Yorkfrom $47

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Flights to Orlandofrom $47

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Flights to San Franciscofrom $54

Flights to Washington, D.C.from $52

Flights to Bostonfrom $47

Flights to Atlantafrom $48

Flights to Dallasfrom $50

Flights to Seattlefrom $76

Cheap flights from Illinois to Florida Keys from $63

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Florida Keys departing on 9/19. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Illinois to Florida Keys

Cheap round-trip flights

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Cheap last minute flights

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Spirit Airlines flights from Illinois to Florida Keys

Our best Spirit Airlines deals on Illinois to Florida Keys flight tickets

Frontier flights from Illinois to Florida Keys

Our best Frontier deals on Illinois to Florida Keys flight tickets

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

See travel insights to Florida Keys from

How to get the cheapest flight ticket from Illinois 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

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 Illinois averaging around $230.

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

The cheapest day to depart from Illinois to Florida Keys is on a Thursday when prices can be found for as low as $432. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $456.

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

What is the cheapest Illinois to Florida Keys flight route?

Fly from Chicago O'Hare Intl to Key West for the best Illinois - Florida Keys flight prices

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

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

There are 3 cabin classes available to choose from on Illinois 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 Illinois to Florida Keys flights?

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

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

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

What airlines fly to Florida Keys?

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

275 flights are operational weekly from Illinois to Florida Keys as of August 2025. The most popular departure day for this route is Thu, with 16% of flights per week taking off on this day.

How long is the flight from Illinois to Florida Keys?

Cheap Illinois to Florida Keys flight deals and tips

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

Fastest flight time

Direct flights

Airports in Florida Keys

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

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

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

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

What is the most popular plane model from Illinois to Florida Keys?

Best airlines flying from Illinois to Florida Keys

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

Why use momondo?

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

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

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

I’m not ready to book a flight from Illinois 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