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Key Largo

$46+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MIA
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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The best prices from Chicago O'Hare Intl to Key Largo are usually found in September or May, 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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$102
(Cheapflightsfares)

One-way from

$46
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$346
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. 9% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 3, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/254:32 pmORD - MIA
Nonstop3h 13mSpirit Airlines
Wed 3/265:52 amMIA - ORD
Nonstop3h 37mSpirit Airlines
Deal found 3/2$102
This Mytrip deal was found by Cheapflights users on 3/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/89:24 amORD - MIA
Nonstop3h 16mMultiple Airlines
Tue 4/1510:36 amMIA - ORD
1 stop7h 15mMultiple Airlines
Deal found 3/3$122
This CheapOair deal was found by Cheapflights users on 3/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:40 amORD - MIA
1 stop21h 15mFrontier
Wed 4/96:25 amMIA - ORD
1 stop19h 12mFrontier
Deal found 3/2$150
This American Airlines deal was found by Cheapflights users on 3/2. 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 4/127:17 pmORD - MIA
Nonstop3h 12mAmerican Airlines
Wed 4/161:40 pmMIA - ORD
Nonstop3h 25mAmerican Airlines
Deal found 3/2$179
This Delta deal was found by Cheapflights users on 3/2. 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 4/261:31 pmORD - MIA
1 stop6h 17mDelta
Tue 4/296:00 amMIA - ORD
1 stop7h 05mDelta
Deal found 3/2$217
This JetBlue deal was found by Cheapflights users on 3/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/510:37 amORD - MIA
1 stop7h 07mJetBlue
Wed 4/910:20 amMIA - ORD
1 stop10h 07mJetBlue
Deal found 3/3$225

Find flights from O'Hare Intl to Key Largo within your budget

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 March 3, 2025.

Fly from

O'Hare Intl

Fly to

Key Largo

Route

Depart

Return

Price

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Tue 3/25

4:32 pm-8:45 pm

Nonstop3h 13m

Miami

Wed 3/26

5:52 am-8:29 am

Nonstop3h 37m

$102

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Tue 4/8

9:24 am-1:40 pm

Nonstop3h 16m

Miami

Tue 4/15

10:36 am-4:51 pm

1 stop7h 15m

$122

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 4/2

6:40 am-4:55 am

1 stop21h 15m

Miami

Wed 4/9

6:25 am-12:37 am

1 stop19h 12m

$150

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 4/12

7:17 pm-11:29 pm

Nonstop3h 12m

Miami

Wed 4/16

1:40 pm-4:05 pm

Nonstop3h 25m

$179

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 4/26

9:55 am-3:38 pm

1 stop4h 43m

Miami

Wed 4/30

8:05 am-12:39 pm

1 stop5h 34m

$217

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 4/5

10:37 am-6:44 pm

1 stop7h 07m

Miami

Wed 4/9

10:20 am-7:27 pm

1 stop10h 07m

$225

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Tue 3/18

5:55 am-4:16 pm

1 stop9h 21m

$46

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Thu 3/27

4:30 pm-12:35 am

1 stop7h 05m

$84

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Sat 4/12

6:25 pm-10:44 pm

Nonstop3h 19m

$90

ChicagoMiami

ORD - MIA

ORDMIA

Chicago O'Hare Intl

Wed 4/23

1:26 pm-11:55 pm

1 stop9h 29m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 14 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.

Travel insights for flights from O'Hare Intl to Key Largo

Get recent, data-driven insights about flights from O'Hare Intl to Key Largo including ideal travel times, pricing trends, and more.

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 February 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 83 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 $231). 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 March 3, 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 March 3, 2025.

The most flights from ORD to KE9 are scheduled on a Sunday (51 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (8 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 March 3, 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
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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
8.1
Very good
4,333 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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
8,068 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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
8,679 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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.

JetBlue
7.4
Good
3,008 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

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 $46. Frontier flights start at $85 while deals on United 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 (89%), Air New Zealand (86%) and United Airlines (86%).

  • 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 $747, our data shows the cheapest flight currently is $52. When looking at the most popular route, (Chicago O'Hare Intl - Miami), you can expect to pay $74 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 $231). 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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$40Average$133FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$66Average$174FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$368FlexibilityNo cancel feeOn-time71%
DeltaCheapest$177Average$302FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$178Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$235Average$372FlexibilityNo cancel feeOn-time63%
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