Key Largo

$170+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — MIA
Apr 29 — May 61
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.

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 March 30, 2026.

This Delta deal was found by Cheapflights users on 3/28. 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.
Tue 5/196:46 pm
DAY
-
MIA
1 stop5h 57m
Delta
Wed 5/278:05 am
MIA
-
DAY
1 stop6h 24m
Delta
Deal found 3/28$261
This American Airlines deal was found by Cheapflights users on 3/30. 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 5/66:00 am
DAY
-
MIA
1 stop8h 30m
American Airlines
Mon 5/117:45 am
MIA
-
DAY
1 stop5h 37m
American Airlines
Deal found 3/30$280
This Delta deal was found by Cheapflights users on 3/29. 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 4/226:44 pm
DAY
-
MIA
1 stop6h 10m
Delta
Mon 4/277:04 am
MIA
-
DAY
1 stop7h 00m
Delta
Deal found 3/29$299
This Delta deal was found by Cheapflights users on 3/29. 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 4/146:00 am
DAY
-
MIA
1 stop4h 46m
Delta
Wed 4/297:04 am
MIA
-
DAY
1 stop7h 00m
Delta
Deal found 3/29$300
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/257:15 am
DAY
-
MIA
2 stops11h 27m
United Airlines
Thu 4/307:40 pm
MIA
-
DAY
1 stop5h 41m
United Airlines
Deal found 3/26$304
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/147:15 am
DAY
-
MIA
2 stops9h 01m
United Airlines
Wed 4/2912:24 pm
MIA
-
DAY
1 stop8h 03m
United Airlines
Deal found 3/29$305
This American Airlines deal was found by Cheapflights users on 3/27. 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 5/156:00 am
DAY
-
MIA
1 stop7h 45m
American Airlines
Sat 5/236:20 am
MIA
-
DAY
1 stop6h 54m
American Airlines
Deal found 3/27$308
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/1411:32 am
DAY
-
MIA
2 stops9h 26m
United Airlines
Tue 4/289:15 am
MIA
-
DAY
2 stops9h 43m
United Airlines
Deal found 3/29$310
This United Airlines deal was found by Cheapflights users on 3/25. 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 4/229:00 am
DAY
-
MIA
2 stops11h 58m
United Airlines
Wed 4/2912:24 pm
MIA
-
DAY
1 stop5h 48m
United Airlines
Deal found 3/25$313
This Delta deal was found by Cheapflights users on 3/27. 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 4/116:34 pm
DAY
-
MIA
1 stop6h 18m
Delta
Sat 4/186:00 am
MIA
-
DAY
1 stop4h 43m
Delta
Deal found 3/27$319
This American Airlines deal was found by Cheapflights users on 3/25. 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 9/91:07 pm
DAY
-
MIA
1 stop5h 31m
American Airlines
Mon 9/145:34 pm
MIA
-
DAY
1 stop6h 07m
American Airlines
Deal found 3/25$329
This Delta deal was found by Cheapflights users on 3/28. 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.
Thu 5/2111:20 am
DAY
-
MIA
1 stop5h 26m
Delta
Tue 5/268:05 am
MIA
-
DAY
1 stop6h 24m
Delta
Deal found 3/28$330

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 March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$261
(Delta)

One-way from

$170
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$458
Provider with most accurate pricing for Dayton-Miami flight deals.
Provider most trusted by Cheapflights users for Dayton-Miami flights.
From Dayton to Key Largo
One-way flight from Dayton to Key Largo
Highest demand for flights based on searches. 13% potential increase in price ($57 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 March 30, 2026.
Use the filters below to find and compare flights from Dayton to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 8/1

4:29 pm-11:39 pm

1 stop7h 10m

Miami

Sat 8/8

6:00 am-10:36 am

1 stop4h 36m

$319
Quickest round-trip

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Thu 4/30

6:44 pm-12:54 am

1 stop6h 10m

Miami

Mon 5/4

7:41 pm-12:17 am

1 stop4h 36m

$349

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Thu 5/7

10:28 am-4:16 pm

1 stop5h 48m

Miami

Sun 5/10

4:20 pm-11:59 pm

1 stop7h 39m

$392

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 5/2

6:25 am-5:30 pm

2 stops11h 05m

Miami

Wed 5/6

10:16 am-6:53 pm

2 stops8h 37m

$399

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Fri 4/10

6:34 pm-12:52 am

1 stop6h 18m

Miami

Mon 4/13

7:41 pm-12:17 am

1 stop4h 36m

$418

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 4/18

6:44 pm-12:54 am

1 stop6h 10m

Miami

Sun 4/26

6:15 pm-12:17 am

1 stop6h 02m

$429

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 5/6

6:25 am-4:16 pm

2 stops9h 51m

Miami

Sat 5/9

4:20 pm-11:59 pm

1 stop7h 39m

$435

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Sat 5/2

11:35 am-9:11 pm

2 stops9h 36m

Miami

Sat 5/9

2:20 pm-11:59 pm

2 stops9h 39m

$435

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Wed 5/6

6:25 am-4:16 pm

2 stops9h 51m

Miami

Mon 5/11

4:20 pm-11:59 pm

1 stop7h 39m

$454

DaytonMiami

DAY - MIA

DAYMIA

Dayton

Mon 4/13

10:28 am-4:16 pm

1 stop5h 48m

Miami

Thu 4/16

7:01 am-5:03 pm

2 stops10h 02m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 20 resultsSorted by cheapest first
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 March 13, 2026.

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 72 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 $61). 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.

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 March 30, 2026.
See what other customers who have flown with Delta,United Airlines, andAllegiant Air 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.

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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 48m. 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, September is the cheapest month in which you can book a flight from Dayton to Key Largo (average of $61). 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

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.

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 March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$38Average$173FlexibilityNo cancel feeOn-time88%
FrontierCheapest$46Average$156FlexibilityNo cancel feeOn-time62%
DeltaCheapest$218Average$393FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$224Average$408FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$388FlexibilityNo cancel feeOn-time69%

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.