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Key Largo

$58+ Cheap flights from O'Hare Intl (ORD) to Key Largo, FL

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MIA
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Key Largo are usually found in September or May, booked 43 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to Key Largo

Keep the following information in mind while searching for O'Hare Intl to Key Largo flight deals. Data was last updated April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$117
(eDestinos)

One-way from

$58
(eDestinos)

Popular in

March

Cheapest in

September

Average price

$220
Provider with most accurate pricing for Chicago (CHI)-Miami flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Miami flights.
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From Chicago O'Hare Intl to Key Largo
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One-way flight from Chicago O'Hare Intl to Key Largo
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Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from O'Hare Intl to Key Largo

Cheapest flights from O'Hare Intl to Key Largo
Explore the most affordable flight options available from O'Hare Intl to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.

This eDestinos deal was found by Cheapflights users on 4/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/311:53 amORD - MIA
1 stop6h 29mSpirit Airlines
Tue 5/63:30 pmMIA - ORD
Nonstop3h 30mSpirit Airlines
Deal found 4/3$117
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 5/67:00 pmORD - MIA
Nonstop3h 12mMultiple Airlines
Sun 5/117:12 amMIA - ORD
1 stop9h 45mMultiple Airlines
Deal found 4/3$147
This American Airlines deal was found by Cheapflights users on 4/3. 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.
Sat 5/37:17 pmORD - MIA
Nonstop3h 12mAmerican Airlines
Thu 5/89:27 pmMIA - ORD
Nonstop3h 29mAmerican Airlines
Deal found 4/3$178
This Frontier deal was found by Cheapflights users on 4/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/112:40 pmORD - MIA
1 stop8h 55mFrontier
Mon 5/57:30 amMIA - ORD
1 stop11h 59mFrontier
Deal found 4/3$200
This United Airlines deal was found by Cheapflights users on 4/4. 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 4/257:30 amORD - MIA
Nonstop3h 18mUnited Airlines
Tue 4/2912:20 pmMIA - ORD
Nonstop3h 34mUnited Airlines
Deal found 4/4$210
This Delta deal was found by Cheapflights users on 4/3. 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.
Sat 5/245:15 pmORD - MIA
1 stop5h 31mDelta
Tue 5/277:30 pmMIA - ORD
1 stop5h 28mDelta
Deal found 4/3$217

Cheapflights Fare Finder

Customize your flight search to find flights from O'Hare Intl to Key Largo 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 April 4, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Key Largo that are best for you.

Fly from

O'Hare Intl

Fly to

Key Largo

Route

Depart

Return

Price

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/3

11:53 am-7:22 pm

1 stop6h 29m

Miami

Tue 5/6

3:30 pm-6:00 pm

Nonstop3h 30m

$117

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 5/14

9:55 am-2:10 pm

Nonstop3h 15m

Miami

Sun 5/18

7:12 am-3:57 pm

1 stop9h 45m

$143

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/3

7:17 pm-11:29 pm

Nonstop3h 12m

Miami

Thu 5/8

9:27 pm-11:56 pm

Nonstop3h 29m

$178

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Thu 5/1

8:30 am-10:07 pm

1 stop12h 37m

Miami

Mon 5/5

7:30 am-6:29 pm

1 stop11h 59m

$200

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Fri 4/25

10:36 am-2:55 pm

Nonstop3h 19m

Miami

Tue 4/29

12:20 pm-2:54 pm

Nonstop3h 34m

$210

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/24

5:15 pm-11:46 pm

1 stop5h 31m

Miami

Tue 5/27

7:30 pm-11:58 pm

1 stop5h 28m

$217

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Tue 4/15

7:00 pm-11:12 pm

Nonstop3h 12m

$58

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/10

10:37 am-2:56 pm

Nonstop3h 19m

$89

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/10

7:16 pm-11:32 pm

Nonstop3h 16m

$90

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Fri 4/25

8:00 am-2:43 pm

1 stop5h 43m

$98

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 13 results
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Best time to book a flight from O'Hare Intl to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from O'Hare Intl 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 O'Hare Intl Airport to Key Largo

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Key Largo. Price data was last updated on March 28, 2025.

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Key Largo, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Key Largo (average of $229). Flying from Chicago O'Hare Intl Airport to Key Largo in March is currently the most expensive (average of $289). 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 ORD to KE9?

Find hourly flight availability from O'Hare Intl to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 4, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to Key Largo as you normally would.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago O'Hare Intl Airport to Key Largo

Explore weekly flight availability from O'Hare Intl to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 4, 2025.

The most flights from ORD to KE9 are scheduled on a Friday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Largo. Reviews last updated April 4, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Chicago to Key Largo to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Southwest
8.0
Very good
4,276 reviews
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Delta
8.0
Very good
7,900 reviews
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
United Airlines
7.4
Good
8,618 reviews
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Sun Country Air
6.9
Okay
349 reviews
Southwest
8.0
Very good
4,276 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Related info for your journey

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

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Key Largo one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $58. United Airlines flights start at $89 while deals on American Airlines start at $90 one-way.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Key Largo?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to Key Largo are Avianca (88%), Spirit Airlines (86%) and United Airlines (84%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Key Largo?

    While on average a flight from Chicago O'Hare Intl Airport to Key Largo is generally $963, our data shows the cheapest flight currently is $61. When looking at the most popular route, (Chicago O'Hare Intl - Miami), you can expect to pay $96 for that flight.

  • Can I find deals for flights from O'Hare Intl to Key Largo that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Key Largo.

  • Can I find deals for business class flights from O'Hare Intl to Key Largo?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Key Largo 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 O'Hare Intl Airport to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Key Largo (average of $229). Flying from Chicago O'Hare Intl Airport to Key Largo in March is currently the most expensive (average of $289). 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 6 airlines flying from O'Hare Intl to Key Largo

Discover the top 6 airlines that operate flights from O'Hare Intl to Key Largo. 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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$43Average$132FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$67Average$177FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$177Average$311FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$412FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$235Average$369FlexibilityNo cancel feeOn-time63%

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