HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$55+ Cheap flights from Columbus (CMH) 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
CMH — MIA
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Columbus to Key Largo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Columbus to Key Largo are usually found in September or January, booked 29 days in advance, depart on a Sunday or Monday and return on a Thursday

Cheap flight deals from Columbus to Key Largo

Keep the following information in mind while searching for Columbus to Key Largo flight deals. Data was last updated November 3, 2025.

Round-trip from

$152
(Expedia)

One-way from

$55
(Priceline)

Popular in

March

Cheapest in

September

Average price

$379
From Columbus to Key Largo
Search Deals
One-way flight from Columbus to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($34 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 November 2025
Search Deals

Find flight deals from Columbus to Key Largo

Cheapest flights from Columbus to Key Largo
Explore the most affordable flight options available from Columbus to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Expedia deal was found by Cheapflights users on 11/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:08 pmCMH - MIA
1 stop8h 07mMultiple Airlines
Mon 12/85:30 amMIA - CMH
1 stop6h 11mMultiple Airlines
Deal found 11/3$152
This Priceline deal was found by Cheapflights users on 11/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 amCMH - MIA
1 stop7h 14mMultiple Airlines
Mon 12/155:30 amMIA - CMH
1 stop6h 11mMultiple Airlines
Deal found 11/3$165
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:56 pmCMH - MIA
1 stop11h 50mFrontier
Sun 12/77:09 pmMIA - CMH
1 stop16h 32mFrontier
Deal found 11/2$166
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Mon 12/18:06 pmCMH - MIA
2 stops20h 22mFrontier
Mon 12/85:30 amMIA - CMH
1 stop6h 11mFrontier
Deal found 11/3$174
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:18 pmCMH - MIA
1 stop5h 53mSpirit Airlines
Thu 11/2012:28 pmMIA - CMH
2 stops11h 23mSpirit Airlines
Deal found 11/2$178
This Southwest deal was found by Cheapflights users on 11/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:40 pmCMH - MIA
Nonstop2h 40mSouthwest
Fri 12/57:10 amMIA - CMH
1 stop5h 00mSouthwest
Deal found 11/2$179
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:18 pmCMH - MIA
1 stop5h 53mSpirit Airlines
Tue 11/186:25 amMIA - CMH
2 stops16h 45mSpirit Airlines
Deal found 11/2$181
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Mon 11/174:30 pmCMH - MIA
1 stop8h 04mMultiple Airlines
Thu 11/2012:28 pmMIA - CMH
2 stops11h 23mMultiple Airlines
Deal found 11/3$182
This Mytrip deal was found by Cheapflights users on 11/3. 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 11/184:18 pmCMH - MIA
1 stop5h 53mSpirit Airlines
Fri 11/2112:28 pmMIA - CMH
2 stops11h 23mSpirit Airlines
Deal found 11/3$184
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Mon 11/174:30 pmCMH - MIA
1 stop20h 58mMultiple Airlines
Sat 11/225:30 amMIA - CMH
2 stops18h 21mMultiple Airlines
Deal found 11/3$186

Cheapflights Fare Finder

 
Customize your flight search to find flights from Columbus 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 November 3, 2025.
Use the filters below to find and compare flights from Columbus Airport to Key Largo that are best for you.

Fly from

Columbus

Fly to

Key Largo

Route

Depart

Return

Price

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Mon 12/1

5:45 pm-11:00 pm

1 stop5h 15m

Miami

Fri 12/5

7:40 am-12:50 pm

1 stop5h 10m

$189

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Sat 12/6

1:46 pm-9:10 pm

1 stop7h 24m

Miami

Tue 12/9

8:05 am-12:50 pm

1 stop4h 45m

$197

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Wed 1/21

10:17 am-5:48 pm

1 stop7h 31m

Miami

Tue 1/27

7:15 am-11:46 am

1 stop4h 31m

$199

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Mon 12/1

1:40 pm-4:20 pm

Nonstop2h 40m

Miami

Thu 12/4

5:10 pm-10:10 pm

1 stop5h 00m

$224

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Thu 12/4

7:58 pm-12:46 am

1 stop4h 48m

Miami

Tue 12/9

10:32 am-3:43 pm

1 stop5h 11m

$247

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Fri 12/5

7:58 pm-12:46 am

1 stop4h 48m

Miami

Thu 12/11

3:50 pm-9:40 pm

1 stop5h 50m

$258

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Sun 11/16

7:00 am-2:35 pm

1 stop7h 35m

Miami

Wed 11/19

6:23 pm-12:14 am

1 stop5h 51m

$269

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Sat 1/3

6:15 pm-10:48 pm

1 stop4h 33m

Miami

Thu 1/15

6:00 am-12:01 pm

1 stop6h 01m

$292

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Fri 12/26

5:35 pm-12:47 am

1 stop7h 12m

Miami

Tue 12/30

9:59 pm-7:05 pm

2 stops21h 06m

$306

ColumbusMiami

CMH - MIA

CMHMIA

Columbus

Sat 11/29

12:14 pm-7:49 pm

1 stop7h 35m

Miami

Sun 12/7

7:09 pm-11:41 am

1 stop16h 32m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Columbus to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Columbus 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 Columbus Airport to Key Largo

How far ahead should I book a flight from Columbus Airport to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Columbus to Key Largo. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Columbus Airport to Key Largo, you should look to book at least 29 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 Columbus Airport to Key Largo?

Currently, April is the cheapest month in which you can book a flight from Columbus Airport to Key Largo (average of $69). Flying from Columbus Airport to Key Largo in June is currently the most expensive (average of $105). 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 CMH to KE9?

Find hourly flight availability from Columbus 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 November 3, 2025.

It’s optimal to fly from Columbus Airport to Key Largo in the morning. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Columbus Airport to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Columbus to Key Largo. Price data was last updated on November 24, 2024.

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

Weekly flight availability from Columbus Airport to Key Largo

Explore weekly flight availability from Columbus 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 November 3, 2025.

The most flights from CMH to KE9 are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Columbus Airport to Key Largo?

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 November 3, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Columbus Airport to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,002 reviews
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,038 reviews
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,115 reviews
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,117 reviews
Southwest
8.0
Very good
4,238 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from Columbus Airport to Key Largo?

    Airlines like Southwest and Delta fly from Columbus Airport to Key Largo in about 5h 15m. The time it takes to get you to your destination can typically vary by up to 2h 09m. There are 992 mi between Columbus Airport and Key Largo. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Columbus Airport to Key Largo one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $63. Users have also found prices from $87 and $90 on Spirit Airlines and Southwest, respectively.

  • What are the most reliable airlines from Columbus Airport to Key Largo?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Columbus Airport to Key Largo on time: American Airlines (85%), Envoy Air (85%), Qatar Airways (84%).

  • What are the cheapest flights from Columbus Airport to Key Largo?

    The cheapest flight price from Columbus Airport to Key Largo is $88. On average you can expect to pay $480. The most popular route, (Columbus - Miami), can usually be booked for $133.

  • Can I find deals for flights from Columbus to Key Largo that include hotel bookings?

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

  • How can I find direct flights from Columbus to Key Largo?

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

  • Can I find deals for business class flights from Columbus to Key Largo?

    Yes. Cheapflights offers flight deals from Columbus 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 Columbus Airport to Key Largo?

    Currently, April is the cheapest month in which you can book a flight from Columbus Airport to Key Largo (average of $69). Flying from Columbus Airport to Key Largo in June is currently the most expensive (average of $105). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Columbus to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Columbus to Orlando flights
Columbus to Fort Lauderdale flights
Columbus to Miami flights
Columbus to Fort Myers flights
Columbus to Tampa flights
Columbus to Sarasota flights
Columbus to West Palm Beach flights
Columbus to Key West flights
Rickenbacker to Fort Lauderdale flights
Columbus to Jacksonville flights
Columbus to Pensacola flights
Columbus to Panama City flights
Columbus to Daytona Beach flights
Columbus to Valparaiso flights
Rickenbacker to St Petersburg flights
Columbus to St Petersburg flights
Columbus to Melbourne flights
Columbus to Gainesville flights
Columbus to Tallahassee flights
Columbus to Orlando Sanford Intl flights
Columbus to Punta Gorda flights
Columbus to Valdosta flights
Columbus to Destin flights

Top 7 airlines flying from Columbus to Key Largo

Discover the top 7 airlines that operate flights from Columbus 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$70Average$207FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$85Average$205FlexibilityNo cancel feeOn-time65%
FrontierCheapest$143Average$280FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$145Average$385FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$188Average$417FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$412FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$367FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.