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Key Largo

$148+ Cheap flights from Dayton (DAY) 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — MIA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Dayton to Key Largo are usually found in September or May, booked 36 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Dayton to Key Largo

Keep the following information in mind while searching for Dayton to Key Largo flight deals. Data was last updated September 11, 2025.

Round-trip from

$248
(American Airlines)

One-way from

$148
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$263
From Dayton to Key Largo
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One-way flight from Dayton to Key Largo
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Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dayton to Key Largo

Cheapest flights from Dayton to Key Largo
Explore the most affordable flight options available from Dayton to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 11/196:00 amDAY - MIA
1 stop6h 48mAmerican Airlines
Mon 11/245:45 amMIA - DAY
1 stop6h 48mAmerican Airlines
Deal found 9/10$248
This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 10/226:44 pmDAY - MIA
1 stop5h 45mDelta
Mon 10/276:00 amMIA - DAY
1 stop6h 44mDelta
Deal found 9/11$259
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/19:00 amDAY - MIA
1 stop6h 11mUnited Airlines
Wed 10/81:15 pmMIA - DAY
2 stops10h 28mUnited Airlines
Deal found 9/9$264
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 9/286:06 amDAY - MIA
1 stop6h 39mAmerican Airlines
Mon 10/66:51 pmMIA - DAY
1 stop4h 53mAmerican Airlines
Deal found 9/10$274
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 11/156:55 amDAY - MIA
2 stops12h 13mUnited Airlines
Thu 11/207:00 amMIA - DAY
1 stop6h 28mUnited Airlines
Deal found 9/11$283
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/266:00 amDAY - MIA
1 stop6h 12mAmerican Airlines
Fri 10/312:20 pmMIA - DAY
1 stop6h 16mAmerican Airlines
Deal found 9/10$298
This Delta deal was found by Cheapflights users on 9/9. 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 10/115:30 pmDAY - MIA
1 stop6h 59mDelta
Sun 10/126:00 amMIA - DAY
1 stop4h 24mDelta
Deal found 9/9$299
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/307:00 amDAY - MIA
2 stops10h 52mUnited Airlines
Sat 11/810:55 amMIA - DAY
2 stops9h 24mUnited Airlines
Deal found 9/10$300
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/3110:31 amDAY - MIA
1 stop8h 06mAmerican Airlines
Sat 11/16:20 amMIA - DAY
1 stop7h 05mAmerican Airlines
Deal found 9/11$309

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dayton 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 September 11, 2025.
Use the filters below to find and compare flights from Dayton to Key Largo that are best for you.

Fly from

Dayton

Fly to

Key Largo

Route

Depart

Return

Price

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 10/1

6:00 am-11:01 am

1 stop5h 01m

Miami

Wed 10/8

8:11 am-12:44 pm

1 stop4h 33m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 2/28

6:40 pm-12:57 am

1 stop6h 17m

Miami

Wed 3/4

8:05 am-2:00 pm

1 stop5h 55m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 10/7

11:09 am-3:30 pm

1 stop4h 21m

Miami

Wed 10/15

6:00 am-10:24 am

1 stop4h 24m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 3/3

2:53 pm-9:02 pm

1 stop6h 09m

Miami

Sat 3/7

7:00 am-2:00 pm

1 stop7h 00m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 1/3

6:00 am-10:23 am

1 stop4h 23m

Miami

Thu 1/8

6:00 am-10:38 am

1 stop4h 38m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Fri 10/17

6:44 pm-12:29 am

1 stop5h 45m

Miami

Tue 10/21

7:10 am-12:44 pm

1 stop5h 34m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 10/22

9:00 am-9:13 pm

2 stops12h 13m

Miami

Sun 10/26

4:11 pm-11:43 pm

1 stop7h 32m

$264

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sun 2/22

11:44 am-6:29 pm

1 stop6h 45m

Miami

Sat 2/28

6:40 am-4:51 pm

2 stops10h 11m

$264

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 10/1

11:42 am-10:45 pm

2 stops11h 03m

Miami

Wed 10/8

1:15 pm-11:43 pm

2 stops10h 28m

$269

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 9/23

4:36 pm-9:23 pm

1 stop4h 47m

Miami

Tue 9/30

6:00 am-10:22 am

1 stop4h 22m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 20 results
1
2

Best time to book a flight from Dayton to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dayton to Key Largo. Price data was last updated on August 29, 2025.

The price you pay for your flight from Dayton to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 36 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Dayton to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Dayton to Key Largo (average of $232). Flying from Dayton 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 DAY to KE9?

Find hourly flight availability from Dayton 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 September 11, 2025.

When flying from Dayton to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Dayton to Key Largo?

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

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

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 September 11, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Dayton 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
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure
Allegiant Air
7.2
Good
702 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Jake,Jan 2024

CVG - ATL

Would have been great but the flight got significantly delayed after we boarded due to a mechanical failure

Related info for your journey

Find useful and relevant information for your journey from Dayton 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 airport do you fly from for flights from Dayton to Key Largo?

    Dayton (DAY) is the airport you will fly out of if you book a flight from Dayton to Key Largo. You should not have trouble finding flights to Key Largo from Dayton; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Dayton airport to Key Largo. It is only a 10.0 mi journey to Dayton (DAY) from Dayton’s city center.

  • How long is the flight from Dayton to Key Largo?

    Departing from Dayton to Key Largo will take you 5h 01m. Airlines will cover a distance of 1000 mi.

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

    The cheapest airlines for a one-way flight from Dayton to Key Largo are American Airlines ($199), Delta ($199), and United Airlines ($199).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dayton 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 Dayton to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Dayton to Key Largo (average of $232). Flying from Dayton 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 5 airlines flying from Dayton to Key Largo

Discover the top 5 airlines that operate flights from Dayton 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$154FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$70Average$159FlexibilityNo cancel feeOn-time88%
DeltaCheapest$212Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$424FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$219Average$442FlexibilityNo cancel feeOn-time71%

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