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Key Largo

$65+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MIA
May 5 — May 121
Mon 5/5
Mon 5/12
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 August, booked 83 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 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$132
(Mytrip)

One-way from

$65
(eDestinos)

Popular in

March

Cheapest in

September

Average price

$264
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. 15% potential increase in price ($47 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 30, 2025.

This Mytrip deal was found by Cheapflights users on 4/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/75:51 amORD - MIA
1 stop6h 15mSpirit Airlines
Tue 6/103:15 pmMIA - ORD
Nonstop3h 26mSpirit Airlines
Deal found 4/27$132
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Wed 6/49:55 amORD - MIA
Nonstop3h 15mMultiple Airlines
Sun 6/86:00 amMIA - ORD
1 stop18h 22mMultiple Airlines
Deal found 4/28$153
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 6/46:55 amORD - MIA
1 stop4h 45mAmerican Airlines
Wed 6/42:18 pmMIA - ORD
1 stop6h 17mAmerican Airlines
Deal found 4/29$184
This Delta deal was found by Cheapflights users on 4/28. 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.
Sat 6/216:15 pmORD - MIA
1 stop5h 42mDelta
Sat 6/288:11 amMIA - ORD
1 stop5h 44mDelta
Deal found 4/28$217
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/252:58 pmORD - MIA
1 stop7h 45mFrontier
Fri 5/3010:59 pmMIA - ORD
1 stop9h 05mFrontier
Deal found 4/29$218
This JetBlue deal was found by Cheapflights users on 4/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:40 amORD - MIA
1 stop10h 16mJetBlue
Mon 12/1510:25 amMIA - ORD
1 stop8h 02mJetBlue
Deal found 4/29$273
This United Airlines deal was found by Cheapflights users on 4/28. 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 7/237:01 amORD - MIA
Nonstop3h 17mUnited Airlines
Wed 7/234:16 pmMIA - ORD
Nonstop3h 34mUnited Airlines
Deal found 4/28$277

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 30, 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 6/7

5:51 am-1:06 pm

1 stop6h 15m

Miami

Tue 6/10

3:15 pm-5:41 pm

Nonstop3h 26m

$132

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 6/4

9:55 am-2:10 pm

Nonstop3h 15m

Miami

Sun 6/8

6:00 am-11:22 pm

1 stop18h 22m

$153

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 6/4

6:55 am-12:40 pm

1 stop4h 45m

Miami

Wed 6/4

2:18 pm-7:35 pm

1 stop6h 17m

$184

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 6/21

6:15 pm-12:57 am

1 stop5h 42m

Miami

Tue 6/24

5:30 am-10:09 am

1 stop5h 39m

$217

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sun 5/25

2:58 pm-11:43 pm

1 stop7h 45m

Miami

Mon 6/2

7:25 am-9:01 pm

1 stop14h 36m

$218

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 7/23

7:01 am-11:18 am

Nonstop3h 17m

Miami

Wed 7/23

4:16 pm-6:50 pm

Nonstop3h 34m

$277

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 5/28

5:51 am-1:06 pm

1 stop6h 15m

$65

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 5/24

7:16 pm-11:32 pm

Nonstop3h 16m

$90

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Tue 7/1

7:10 am-3:51 pm

1 stop7h 41m

$95

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Mon 5/19

8:40 am-4:22 pm

1 stop6h 42m

$98

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 15 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 April 25, 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 55 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 $228). 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 30, 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 30, 2025.

The most flights from ORD to KE9 are scheduled on a Tuesday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta 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.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,922 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $65. American Airlines flights start at $90 while deals on United Airlines start at $95 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 (84%), Spirit Airlines (84%) and Air New Zealand (81%).

  • 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 $727, our data shows the cheapest flight currently is $57. When looking at the most popular route, (Chicago O'Hare Intl - Miami), you can expect to pay $75 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 $228). 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.

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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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$136FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$181FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$159Average$369FlexibilityNo cancel feeOn-time71%
DeltaCheapest$177Average$325FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$412FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$235Average$369FlexibilityNo cancel feeOn-time63%

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