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Key Largo

$130+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — MIA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 65 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/15. 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 12/314:00 pmDAY - MIA
1 stop6h 08mDelta
Wed 1/75:50 amMIA - DAY
1 stop5h 00mDelta
Deal found 12/15$288
This Delta deal was found by Cheapflights users on 12/15. 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 12/246:05 amDAY - MIA
1 stop5h 34mDelta
Wed 12/3110:34 amMIA - DAY
1 stop4h 45mDelta
Deal found 12/15$309
This Delta deal was found by Cheapflights users on 12/15. 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.
Tue 12/307:46 pmDAY - MIA
1 stop5h 02mDelta
Wed 1/75:50 amMIA - DAY
1 stop5h 00mDelta
Deal found 12/15$318
This Delta deal was found by Cheapflights users on 12/16. 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 12/2411:59 amDAY - MIA
1 stop6h 24mDelta
Sun 12/2812:58 pmMIA - DAY
1 stop6h 03mDelta
Deal found 12/16$329
This Delta deal was found by Cheapflights users on 12/15. 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 12/314:00 pmDAY - MIA
1 stop6h 08mDelta
Thu 1/16:00 amMIA - DAY
1 stop5h 19mDelta
Deal found 12/15$334
This American Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/306:00 amDAY - MIA
1 stop8h 06mAmerican Airlines
Thu 1/16:00 amMIA - DAY
1 stop7h 18mAmerican Airlines
Deal found 12/15$339
This Delta deal was found by Cheapflights users on 12/15. 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 12/246:05 amDAY - MIA
1 stop5h 34mDelta
Tue 12/306:23 pmMIA - DAY
1 stop5h 36mDelta
Deal found 12/15$344
This Delta deal was found by Cheapflights users on 12/15. 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.
Mon 12/297:46 pmDAY - MIA
1 stop5h 02mDelta
Wed 1/75:50 amMIA - DAY
1 stop5h 00mDelta
Deal found 12/15$358
This Delta deal was found by Cheapflights users on 12/15. 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.
Tue 12/307:46 pmDAY - MIA
1 stop5h 02mDelta
Thu 1/16:00 amMIA - DAY
1 stop5h 19mDelta
Deal found 12/15$364
This Delta deal was found by Cheapflights users on 12/15. 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.
Tue 12/237:46 pmDAY - MIA
1 stop5h 02mDelta
Wed 12/314:01 pmMIA - DAY
1 stop5h 01mDelta
Deal found 12/15$374
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/319:00 amDAY - MIA
2 stops11h 11mUnited Airlines
Wed 1/79:00 amMIA - DAY
1 stop8h 03mUnited Airlines
Deal found 12/15$384

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$217
(American Airlines)

One-way from

$130
(Delta)

Popular in

March

Cheapest in

September

Average price

$360
Provider with most accurate pricing for Dayton-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dayton-Miami flights.
Search Deals
From Dayton to Key Largo
Search Deals
One-way flight from Dayton to Key Largo
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Sun 1/4

7:46 pm-12:46 am

1 stop5h 00m

Miami

Sat 1/10

5:50 am-10:50 am

1 stop5h 00m

$263

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Thu 1/29

9:50 am-4:22 pm

1 stop6h 32m

Miami

Wed 2/4

1:45 pm-10:02 pm

2 stops8h 17m

$264

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 12/31

4:00 pm-10:08 pm

1 stop6h 08m

Miami

Wed 1/7

5:50 am-10:50 am

1 stop5h 00m

$288

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 1/13

7:00 am-4:22 pm

2 stops9h 22m

Miami

Tue 1/20

1:45 pm-10:02 pm

2 stops8h 17m

$302

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Mon 1/19

9:50 am-10:20 pm

2 stops12h 30m

Miami

Wed 1/28

7:15 am-10:01 pm

2 stops14h 46m

$307

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 1/6

7:00 am-6:25 pm

2 stops11h 25m

Miami

Tue 1/13

11:00 am-10:02 pm

2 stops11h 02m

$307

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 1/17

10:50 am-10:20 pm

2 stops11h 30m

Miami

Wed 1/21

1:45 pm-11:44 pm

2 stops9h 59m

$307

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Thu 2/19

2:00 pm-8:55 pm

1 stop6h 55m

Miami

Mon 2/23

5:05 am-11:36 am

1 stop6h 31m

$309

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Mon 1/12

6:47 pm-12:51 am

1 stop6h 04m

Miami

Mon 1/19

7:15 am-1:48 pm

1 stop6h 33m

$318

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Fri 1/9

6:47 pm-12:51 am

1 stop6h 04m

Miami

Sun 1/18

8:15 am-2:57 pm

1 stop6h 42m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 December 12, 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 65 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, April is the cheapest month in which you can book a flight from Dayton to Key Largo (average of $57). Flying from Dayton to Key Largo in December is currently the most expensive (average of $96). 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 December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Dayton to Key Largo in the afternoon. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight in the morning.

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 Monday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Dayton 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 December 18, 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
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
9,093 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
11,055 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
700 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
3,081 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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. Airlines will cover a distance of 1000 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, April is the cheapest month in which you can book a flight from Dayton to Key Largo (average of $57). Flying from Dayton to Key Largo in December is currently the most expensive (average of $96). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$161FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$80Average$173FlexibilityNo cancel feeOn-time88%
DeltaCheapest$214Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$421FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$224Average$431FlexibilityNo cancel feeOn-time71%

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