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Key Largo

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

ORD — MIA
Nov 2 — Nov 91
Mon 11/2
Mon 11/9
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Key Largo are usually found in January or February, booked 45 days in advance, depart on a Saturday or Monday and return on a Thursday

Find flight deals from O'Hare Intl to Key Largo

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Average price

$302
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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Highest demand for flights based on searches. 13% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Key Largo

What is the cheapest time of day to fly from ORD to KE9?

It’s optimal to fly from Chicago O'Hare Intl Airport to Key Largo in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the afternoon.

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

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

Reviews of airlines servicing Key Largo

See what other customers who have flown with Delta,United Airlines, andJetBlue from Chicago O'Hare Intl Airport to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
Delta
7.8
Good
8,626 reviews
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
United Airlines
7.4
Good
10,283 reviews
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
JetBlue
7.1
Good
3,044 reviews
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
American Airlines
7.0
Good
12,130 reviews
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay
Frontier
5.6
Fair
2,563 reviews
Delta
7.8
Good
8,626 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Comfort

7.8

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Related info for your journey

  • 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 Frontier, which is currently one of the cheapest options available, starting at $29. JetBlue flights start at $68 while deals on American Airlines start at $84 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 (75%), Air Canada (69%) and Copa Airlines (69%).

  • 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 $958, our data shows the cheapest flight currently is $90. When looking at the most popular route, (Chicago O'Hare Intl - Miami), you can expect to pay $198 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from O'Hare Intl to Key Largo

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$201FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$89Average$263FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$314FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$162Average$369FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$167Average$390FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$256Average$387FlexibilityNo cancel feeOn-time63%

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