EYW

$112 Find Cheap Flights from Illinois to Key West

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Key West departing on 2/17. 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
1 adult, Economy

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Flight Deals

Cheap Flights from Illinois to Key West

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Key West 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Key West

Tue, Nov 4 - Sat, Nov 8
American Airlines Logo
10:15 am - 5:51 pmSTL-EYW
6h 36m1 stop
American Airlines Logo
12:46 pm - 9:00 pmEYW-STL
9h 14m1 stop
$223American Airlines
Find Deal
Tue, Nov 4 - Sat, Nov 8
American Airlines Logo
8:13 am - 7:23 pmSTL-EYW
10h 10m2 stops
American Airlines Logo
12:46 pm - 9:00 pmEYW-STL
9h 14m1 stop
$228American Airlines
Find Deal
Sat, Sep 20 - Thu, Sep 25
 Logo
5:45 pm - 4:00 pmORD-EYW
21h 15m1 stop
 Logo
4:50 pm - 10:18 amEYW-ORD
18h 28m1 stop
Sun, Oct 19 - Wed, Oct 22
 Logo
5:50 am - 4:04 pmORD-EYW
9h 14m1 stop
 Logo
10:02 am - 10:08 amEYW-ORD
25h 06m1 stop
Wed, Nov 12 - Wed, Nov 19
Delta Logo
11:44 am - 7:53 pmSTL-EYW
7h 09m1 stop
Delta Logo
6:18 pm - 9:58 pmEYW-STL
4h 40m1 stop
$243Delta
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Thu, Nov 6 - Mon, Nov 10
Spirit Airlines Logo
5:05 am - 1:30 pmORD-EYW
7h 25m1 stop
Spirit Airlines Logo
2:25 pm - 9:00 pmEYW-ORD
7h 35m1 stop
$243Spirit Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
Spirit Airlines Logo
5:05 am - 1:30 pmORD-EYW
7h 25m1 stop
Spirit Airlines Logo
2:25 pm - 11:42 pmEYW-ORD
10h 17m1 stop
$253Spirit Airlines
Find Deal
Sun, Oct 26 - Mon, Nov 3
United Airlines Logo
11:00 am - 3:19 pmORD-EYW
3h 19mnonstop
United Airlines Logo
3:00 pm - 11:34 pmEYW-ORD
9h 34m1 stop
$259United Airlines
Find Deal
Wed, Sep 24 - Tue, Sep 30
United Airlines Logo
6:00 am - 2:55 pmORD-EYW
7h 55m1 stop
United Airlines Logo
3:12 pm - 11:30 pmEYW-ORD
9h 18m1 stop
$269United Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
Delta Logo
9:19 am - 5:15 pmSTL-EYW
6h 56m1 stop
Delta Logo
6:10 pm - 10:00 pmEYW-STL
4h 50m1 stop
$279Delta
Find Deal
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Good to know

Low seasonAugust
Cheapest flight$112
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from St. Louis to Key West

FAQs for booking flights from Illinois to Key West

  • How does KAYAK find such low prices on flights from Illinois to Key West?

    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 Illinois to Key West.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Key West?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Key West from Illinois 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 Illinois to Key West?

    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 Key West with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Key West?

    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 Key West from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Little Torch Key

Everything you need to know for your flight to Key West

Information on the airport you'll fly into in Key West

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