$104 Find Cheap Flights from Key West to Chicago O'Hare Airport - Compare and Save

Among airlines operating Key West to Chicago O'Hare Intl Airport flights:

• American Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Key West and Chicago O'Hare Intl Airport. The airlines offering nonstop flights on this route include:

• American Airlines
• United Airlines

Flights from Key West to Chicago O'Hare Intl Airport usually depart from Key West (EYW) and arrive at Chicago O'Hare Intl (ORD).

Here are some options for this route, based on selected ticket types and cabin classes:

• American Airlines: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Key West to Chicago O'Hare Intl Airport:

• Economy Class
• First Class

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $349 round-trip, compared to $370 via a layover through Miami (MIA).

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Embraer 170 family is used most often on this route, operated mainly by American Airlines and United Airlines. Other aircraft seen on the route include Embraer 175 (Enhanced Winglets) variants.

Connecting flights from Key West to Chicago O'Hare Intl Airport most commonly pass through:

• Atlanta Hartsfield-Jackson (ATL) - 83% of one-stop connections
• Miami (MIA) - 17% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.

Yes. Being flexible with your travel dates can save you up to 39% on the Key West to Chicago O'Hare Intl Airport route. Friday is the cheapest departure day at $268 round-trip on average, while Saturday is the most expensive at $434, a difference of $166. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Afternoon is the busiest departure period on Key West to Chicago O'Hare Intl Airport flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, Grant Park and River North. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

These are the earliest and latest flight times available from Key West to Chicago O'Hare Intl Airport:

• Earliest: departs at 9:00 am and lands at 12:51 pm
• Latest: departs at 6:35 pm and lands at 10:26 pm.

The flight takes about 3h 51m.

A nonstop flight from Key West to Chicago O'Hare Intl Airport takes 3h 51m, covering 1,253 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $266 to $1,912. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Key West to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about $145, which is 56% below the typical average for this route.

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 5h 25m, compared with 6h 42m via Miami (MIA).

Chicago O'Hare Intl Airport is 1 hour behind Key West (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates starting from around $17 for economy cars. Top options include:
• Routes Car & Truck Rentals
• Europcar
• Hertz
• Dollar
• Ace

Round-trip flights from Key West to Chicago O'Hare Intl Airport range from $329 to $434, with an average of $375 over the past 12 months. Anything below $329 counts as a good deal.