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Key West

$84+ Cheap flights from Chicago (CHI) to Key West (EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — EYW
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find cheap flights from Chicago to Key West with Cheapflights

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Cheapflights Tip: The best prices from Chicago to Key West are usually found in August or September, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Find flight deals from Chicago to Key West

Cheapest flights from Chicago to Key West
Explore the most affordable flight options available from Chicago to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:02 pmORD - EYW
Nonstop3h 23mAmerican Airlines
Sat 12/612:46 pmEYW - ORD
1 stop8h 40mAmerican Airlines
Deal found 10/29$313
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:52 amORD - EYW
2 stops21h 28mMultiple Airlines
Thu 11/2012:15 pmEYW - ORD
2 stops21h 46mMultiple Airlines
Deal found 10/28$318
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:28 pmORD - EYW
1 stop18h 51mMultiple Airlines
Tue 12/211:45 amEYW - ORD
2 stops22h 32mMultiple Airlines
Deal found 10/28$321
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:50 pmMDW - EYW
1 stop6h 16mDelta
Tue 12/96:10 pmEYW - MDW
1 stop6h 37mDelta
Deal found 10/28$324
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:23 amORD - EYW
1 stop5h 08mDelta
Sat 12/66:10 pmEYW - ORD
1 stop5h 33mDelta
Deal found 10/28$324
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:32 pmORD - EYW
2 stops17h 35mMultiple Airlines
Sun 12/288:55 amEYW - ORD
1 stop24h 52mMultiple Airlines
Deal found 10/27$325
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2811:00 amORD - EYW
Nonstop3h 19mUnited Airlines
Wed 12/34:05 pmEYW - ORD
Nonstop3h 46mUnited Airlines
Deal found 10/27$326
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:00 amMDW - EYW
1 stop7h 03mDelta
Sun 11/236:18 pmEYW - MDW
1 stop6h 22mDelta
Deal found 10/27$329
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:55 amORD - EYW
Nonstop3h 39mUnited Airlines
Mon 12/2912:22 pmEYW - ORD
Nonstop3h 45mUnited Airlines
Deal found 10/28$329
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2811:00 amORD - EYW
Nonstop3h 19mUnited Airlines
Thu 12/44:05 pmEYW - ORD
Nonstop3h 46mUnited Airlines
Deal found 10/29$331
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:30 pmMDW - EYW
1 stop13h 45mMultiple Airlines
Fri 11/288:55 amEYW - MDW
1 stop15h 34mMultiple Airlines
Deal found 10/28$332
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:50 pmMDW - EYW
1 stop6h 16mDelta
Tue 12/166:10 pmEYW - MDW
1 stop6h 37mDelta
Deal found 10/29$334

Cheap flight deals from Chicago to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$313
(American Airlines)

One-way from

$84
(Expedia)

Popular in

March

Cheapest in

August

Average price

$451

Good round-trip deal

$390 or less

Good one-way deal

$253 or less
Provider with most accurate pricing for Chicago (CHI)-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Key West flights.
Search Deals
From Chicago (CHI) to Key West
Search Deals
One-way flight from Chicago (CHI) to Key West
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Key West.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Key West.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Chicago to Key West that are best for you.

Fly from

Chicago

Fly to

Key West

Route

Depart

Return

Price

ChicagoKey West

MDW - EYW

MDWEYW

Chicago Midway

Wed 4/22

1:05 pm-7:44 pm

1 stop5h 39m

Key West

Tue 4/28

6:00 pm-9:45 pm

1 stop4h 45m

$324

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Fri 1/2

6:45 am-3:45 pm

1 stop8h 00m

Key West

Tue 1/6

6:08 pm-11:57 pm

1 stop6h 49m

$324

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Tue 1/20

11:18 am-5:13 pm

1 stop4h 55m

Key West

Sun 1/25

6:08 pm-11:57 pm

1 stop6h 49m

$324

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Fri 11/28

11:00 am-3:19 pm

Nonstop3h 19m

Key West

Wed 12/3

4:05 pm-6:51 pm

Nonstop3h 46m

$326

ChicagoKey West

MDW - EYW

MDWEYW

Chicago Midway

Sat 4/25

1:05 pm-7:44 pm

1 stop5h 39m

Key West

Thu 4/30

6:00 pm-9:45 pm

1 stop4h 45m

$326

ChicagoKey West

MDW - EYW

MDWEYW

Chicago Midway

Wed 4/22

1:05 pm-7:44 pm

1 stop5h 39m

Key West

Fri 5/1

6:00 pm-9:45 pm

1 stop4h 45m

$334

ChicagoKey West

MDW - EYW

MDWEYW

Chicago Midway

Thu 12/11

12:50 pm-8:06 pm

1 stop6h 16m

Key West

Tue 12/16

6:10 pm-11:47 pm

1 stop6h 37m

$334

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Fri 12/5

1:20 pm-8:06 pm

1 stop5h 46m

Key West

Fri 12/12

3:02 pm-9:56 pm

1 stop7h 54m

$337

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Thu 12/25

7:55 am-12:34 pm

Nonstop3h 39m

Key West

Tue 12/30

4:08 pm-6:41 pm

Nonstop3h 33m

$355

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Thu 2/19

11:19 am-7:44 pm

1 stop7h 25m

Key West

Mon 2/23

6:00 pm-11:54 pm

1 stop6h 54m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 38 results
1
2
3
4

Compare providers for flights from Chicago to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Key West in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Key West flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Key West flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Key West flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Key West

How far ahead should I book a flight from Chicago to Key West?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Key West. Price data was last updated on October 24, 2025.

The best time to book flights from Chicago to Key West is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago to Key West?

Currently, December is the cheapest month in which you can book a flight from Chicago to Key West (average of $225). Flying from Chicago to Key West in August is currently the most expensive (average of $336). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to EYW?

Find hourly flight availability from Chicago to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Chicago to Key West in the afternoon. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the evening.

The best insider tips for Chicago to Key West flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Key West trip
Airports
ORD

For a quick departure from ORD, consider taking the 'L' train to avoid Chicago traffic delays.

Read more about ORDby Ramsey Qubein
EYW

After landing at EYW, you can quickly reach most island points within ten minutes by car.

Read more about EYWby Terry Ward
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Terry Ward

Terry Ward

Expert on EYW

Terry Ward

Terry Ward

Florida-based travel writer and journalist Terry Ward lives in Tampa and has enjoyed watching the city and its hotel offerings grow to match the area's spectacular Gulf of Mexico beaches.

Read more

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated October 29, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Chicago to Key West to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Key West from Chicago?

    Located just 2.6 mi from the city center, Key West is the airport most travelers will use when flying to Key West from Chicago. Booking flights from Chicago to Key West (EYW) should be relatively easy as there is 1 daily inbound flight from Chicago from 3 different airlines.

  • How long is the flight from Chicago to Key West?

    Airlines like Delta and United Airlines fly from Chicago to Key West in about 3h 19m. The time it takes to get you to your destination can typically vary by up to 2h 20m. Chicago and Key West are separated by a distance of 1253 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago to Key West round-trip?

    Our cheapest airline available from Chicago to Key West is Delta. Our recent data shows that you can find tickets from as low as $218 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $254 and $308 round-trip. Delta is currently priced 51% below the average price you’ll pay for this route.

  • What are the cheapest flights from Chicago to Key West?

    Looking for the cheapest flight from Chicago to Key West? While on average our users pay $763, our data indicates the cheapest price to be $253. The most popular route (Chicago O'Hare Intl - Key West), is priced around $179.

  • Can I find deals for flights from Chicago to Key West that include hotel bookings?

    Yes. In addition to deals on Chicago to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Key West.

  • Can I find deals for business class flights from Chicago to Key West?

    Yes. Cheapflights offers flight deals from Chicago to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Key West?

    Currently, December is the cheapest month in which you can book a flight from Chicago to Key West (average of $225). Flying from Chicago to Key West in August is currently the most expensive (average of $336). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Chicago to Key West

Discover the top 3 airlines that operate flights from Chicago to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$443FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$254Average$489FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$449FlexibilityNo cancel feeOn-time71%

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