Cheap flights from Illinois to Key West from $134
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 Key West departing on 5/14. 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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American Airlines flights from Illinois to Key West
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How to get the cheapest flight ticket from Illinois to Key West
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 Key West?
In general, August is the cheapest month to fly from Illinois to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $368. If you are unable to visit Key West during the month of August, then departing from Illinois during the month September is also very affordable. Most momondo users find prices during this month for around $378.
What is the cheapest day to depart on your flight to Key West?
On average, the least expensive day to fly to Key West from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $362. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Key West for around $561.
What is the cheapest time of day to depart on your flight to Key West?
According to our data, the cheapest time of day to fly to Key West is at noon. momondo users have found flights departing from Illinois to Key West at noon for as low as $338. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the evening, with an average ticket price of $822. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Illinois to Key West flight route?
Fly from Chicago O'Hare Intl to Key West for the best Illinois - Key West flight prices
How far in advance should I book a flight to Key West?
You are more likely to see cheaper flights to Key West from Illinois when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $428 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Illinois for as low as $380 on momondo.
What cabin class options are available on Illinois to Key West flights?
There are 3 cabin classes available to choose from on Illinois to Key West flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to Key West?
United Airlines, American Airlines, and Delta are the most popular carriers operating from Illinois to Key West
What airlines fly to Key West?
American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Key West from Illinois according to our data. American Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to Key West on average per day?
The number of flights available between Illinois and Key West is 1 per day as of May 2025. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.
How many flights depart from Illinois to Key West on average per week?
As of May 2025, there are 9 flights per week flying from Illinois to Key West. The most common day of the week flights depart is Mon, with 33% of flights taking off on this day.
Cheap Illinois to Key West flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Key West
When did momondo last update prices for flights from Illinois to Key West Airport?
Prices for flights from Illinois to Key West Airport were last updated today.
How many operators does momondo search for flights from Illinois to Key West Airport?
There are 3 operators available for flights from Illinois to Key West Airport as of May 2025.
How old do you have to be to fly from Illinois to Key West Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to Key West?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Key West is Embraer 170, representing 52.70% of all bookings. The subsequent popular models are Boeing 737-700 at 40.68%, Embraer 175 at 1.65%, and Airbus A320neo at 0.88%.
Best airlines flying from Illinois to Key West
Compare and see reviews for airlines that fly from Illinois to Key West with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $216 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $262 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $263 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near Key West?
Book flights to Key West if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Illinois to Key West?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Key West from Illinois.
Can I find flights from Illinois to Key West with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Illinois to Key West flights to just show those with flexible booking policies.
How can momondo help me find flights from Illinois to Key West?
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 Key West from Illinois.
I’m not ready to book a flight from Illinois to Key West right now. Can momondo alert me if prices change?
Price alerts on flights to Key West from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.