HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$132+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — MIA
Nov 30 — Dec 71
Sun 11/30
Sun 12/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dayton 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 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

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 October 31, 2025.

This Delta deal was found by Cheapflights users on 10/29. 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 11/256:00 amDAY - MIA
1 stop5h 21mDelta
Fri 12/56:00 amMIA - DAY
1 stop4h 30mDelta
Deal found 10/29$259
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Mon 12/111:43 amDAY - MIA
1 stop6h 34mUnited Airlines
Tue 12/96:00 amMIA - DAY
2 stops10h 51mUnited Airlines
Deal found 10/28$264
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/62:50 pmDAY - MIA
2 stops9h 04mUnited Airlines
Wed 1/711:00 amMIA - DAY
2 stops8h 37mUnited Airlines
Deal found 10/29$269
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/232:00 pmDAY - MIA
1 stop8h 10mUnited Airlines
Tue 12/307:15 amMIA - DAY
1 stop6h 03mUnited Airlines
Deal found 10/29$279
This American Airlines deal was found by Cheapflights users on 10/30. 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 stop5h 20mAmerican Airlines
Mon 11/245:18 amMIA - DAY
1 stop8h 10mAmerican Airlines
Deal found 10/30$284
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/1611:43 amDAY - MIA
2 stops10h 59mUnited Airlines
Tue 12/234:06 pmMIA - DAY
1 stop7h 38mUnited Airlines
Deal found 10/29$290
This Delta deal was found by Cheapflights users on 10/29. 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.
Sun 11/231:22 pmDAY - MIA
1 stop6h 35mDelta
Thu 12/44:55 pmMIA - DAY
1 stop6h 16mDelta
Deal found 10/29$299
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/1412:48 pmDAY - MIA
1 stop6h 15mAmerican Airlines
Tue 11/181:30 pmMIA - DAY
1 stop6h 25mAmerican Airlines
Deal found 10/30$309
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 11/142:10 pmDAY - MIA
2 stops9h 49mUnited Airlines
Tue 11/1811:00 amMIA - DAY
2 stops8h 01mUnited Airlines
Deal found 10/30$319
This Delta deal was found by Cheapflights users on 10/30. 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
Sat 12/277:32 pmMIA - DAY
1 stop4h 27mDelta
Deal found 10/30$324
This Delta deal was found by Cheapflights users on 10/28. 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 12/3111:59 amDAY - MIA
1 stop6h 23mDelta
Fri 1/96:00 amMIA - DAY
1 stop4h 52mDelta
Deal found 10/28$329
This Delta deal was found by Cheapflights users on 10/29. 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 11/261:22 pmDAY - MIA
1 stop5h 03mDelta
Thu 12/411:26 amMIA - DAY
2 stops11h 45mDelta
Deal found 10/29$332

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 October 31, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$259
(Delta)

One-way from

$132
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$323
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 ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 31, 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 11/26

1:22 pm-6:25 pm

1 stop5h 03m

Miami

Thu 12/4

6:30 pm-11:11 pm

1 stop4h 41m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 11/18

1:22 pm-6:25 pm

1 stop5h 03m

Miami

Tue 11/25

6:00 am-10:34 am

1 stop4h 34m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Fri 2/20

6:40 pm-12:57 am

1 stop6h 17m

Miami

Tue 2/24

7:00 am-2:00 pm

1 stop7h 00m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 11/25

6:00 am-11:21 am

1 stop5h 21m

Miami

Tue 12/2

6:00 am-10:30 am

1 stop4h 30m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Mon 11/24

6:34 pm-12:46 am

1 stop6h 12m

Miami

Fri 12/5

6:00 am-10:30 am

1 stop4h 30m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 11/26

1:22 pm-6:25 pm

1 stop5h 03m

Miami

Wed 12/3

6:00 am-10:30 am

1 stop4h 30m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Thu 1/22

6:00 am-10:40 am

1 stop4h 40m

Miami

Sat 1/24

6:00 am-10:52 am

1 stop4h 52m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 1/6

11:37 am-5:15 pm

1 stop5h 38m

Miami

Tue 1/13

10:29 am-6:00 pm

1 stop7h 31m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Tue 11/25

6:00 am-1:02 pm

1 stop7h 02m

Miami

Thu 12/4

4:55 pm-11:11 pm

1 stop6h 16m

$259

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Mon 12/1

11:43 am-6:17 pm

1 stop6h 34m

Miami

Tue 12/9

6:00 am-4:51 pm

2 stops10h 51m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 22 results
1
2
3

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 October 24, 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 $82). 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 October 31, 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.

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 October 31, 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
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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
7,998 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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
8,996 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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
11,034 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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
694 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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
3,123 reviews
Delta
7.9
Good
7,998 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Crew

8.5

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 03m. Airlines will cover a distance of 1000 mi.

  • 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 $82). 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 Dayton to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Detroit to Orlando flights
Detroit to Fort Lauderdale flights
Cleveland to Orlando flights
Detroit to Miami flights
Cleveland to Fort Lauderdale flights
Cincinnati to Orlando flights
Cleveland to Fort Myers flights
Akron to Orlando flights
Cincinnati to Fort Lauderdale flights
Detroit to Tampa flights
Detroit to Fort Myers flights
Pittsburgh to Fort Lauderdale flights
Cleveland to Tampa flights
Cincinnati to Miami flights
Columbus to Orlando flights
Pittsburgh to Orlando flights
Cincinnati to Tampa flights
Cincinnati to Fort Myers flights
Detroit to West Palm Beach flights
Pittsburgh to Miami flights
Columbus to Fort Lauderdale flights
Columbus to Miami flights
Cleveland to Miami flights
Pittsburgh to Tampa flights
Akron to West Palm Beach flights
Detroit to Jacksonville flights
Akron to Fort Myers flights
Detroit to Sarasota flights
Cincinnati to Orlando Sanford Intl flights
Akron to Fort Lauderdale flights
Columbus to Tampa flights
Dayton to Orlando flights
Cincinnati to St Petersburg flights
Detroit to Key West flights
Columbus to Fort Myers flights
Pittsburgh to Fort Myers flights
Akron to Sarasota flights
Akron to Tampa flights
Columbus to Sarasota flights
Cleveland to Sarasota flights
Pittsburgh to Sarasota flights
Akron to Jacksonville flights
Pittsburgh to Key West flights
Akron to Miami flights
Dayton to Tampa flights
Dayton to Fort Lauderdale flights
Cincinnati to Key West flights
Cleveland to Key West flights
Detroit to Pensacola flights
Pittsburgh to St Petersburg flights

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 October 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$154FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$70Average$159FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$199Average$423FlexibilityNo cancel feeOn-time69%
DeltaCheapest$214Average$357FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$433FlexibilityNo cancel feeOn-time71%

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.