$66 Find Cheap Flights from Florida Keys to Illinois - Compare and Save

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 Florida Keys to Illinois.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Florida Keys to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

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 from Florida Keys to Illinois with an airline and back with another airline.

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

Florida Keys and Illinois are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (63 flights per week), GOL (50 flights per week), and Alaska Airlines (42 flights per week).

There are 12 airports in Illinois. The busiest airport is Chicago O'Hare Airport (ORD), with 91% of all flights arriving there.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago O'Hare Intl Airport (ORD), with an average flight price of $455.

Based on KAYAK data, the cheapest day to fly to Illinois is Wednesday where round-trip tickets can be as cheap as $339. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $484 on average.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $366 on average. Morning departures are around 17% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $438.

The cheapest ticket to Illinois from Florida Keys found in the last 5 days was to Chicago O'Hare Intl Airport, at $309 round-trip. The most popular route is Key West (EYW) to Chicago O'Hare Intl Airport (ORD) and the cheapest round-trip airline ticket found on this route in the last 5 days was $309.

The cheapest month for flights from Florida Keys to Illinois is September, when tickets cost $139 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is $233 and $231 respectively.

To get a below average price on the flight from Florida Keys to Illinois, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

From Florida Keys, there are direct flights to Illinois from 2 cities. The city with the most direct flights is Miami, with 390 direct flights each week.

There are around 59 direct flights from within Florida Keys to Illinois every day. Most flights (48%) depart in the afternoon.

Each week there are around 411 direct flights from within Florida Keys to Illinois. The most common day for departures is Sunday, with 16% of flights taking off on this day.

An average nonstop flight from Florida Keys to Illinois takes 8h 25m, covering a distance of 1183 miles. The shortest route is Miami (MIA) to St. Louis (STL) with an average flight time of 2h 50m.

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to Illinois. Instead, there are 411 short-haul flights (up to 3 hour flight duration), with the most arriving from Miami.

Based on KAYAK flight searches, the most popular destination is Chicago (98% of total searches to Illinois). The next most popular destinations are Moline (2%) and Peoria (0%). Searches for flights to Bloomington (0%) are also popular.