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Key Largo

$56+ Cheap flights from Detroit (DTT) 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — MIA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit All airports to Key Largo are usually found in September or August, booked 18 days in advance, depart on a Sunday or Wednesday and return on a Thursday

Cheap flight deals from Detroit to Key Largo

Keep the following information in mind while searching for Detroit to Key Largo flight deals. Data was last updated July 31, 2025.

Round-trip from

$108
(FlightHub)

One-way from

$56
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$248
From Detroit (DTT) to Key Largo
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One-way flight from Detroit (DTT) to Key Largo
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Highest demand for flights based on searches. 17% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Detroit to Key Largo

Cheapest flights from Detroit to Key Largo
Explore the most affordable flight options available from Detroit to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:05 amDTW - MIA
Nonstop3h 03mSpirit Airlines
Sun 11/911:00 amMIA - DTW
Nonstop3h 09mSpirit Airlines
Deal found 7/29$108
This Delta deal was found by Cheapflights users on 7/31. 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 9/206:20 pmDTW - MIA
Nonstop3h 02mDelta
Sat 9/278:10 amMIA - DTW
Nonstop2h 54mDelta
Deal found 7/31$159

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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 July 31, 2025.
Use the filters below to find and compare flights from Detroit to Key Largo that are best for you.

Fly from

Detroit

Fly to

Key Largo

Route

Depart

Return

Price

DetroitMiami

DTW - MIA

DTWMIA

Detroit Metropolitan Wayne County

Sun 8/17

7:30 am-4:07 pm

1 stop8h 37m

Miami

Thu 8/21

4:53 pm-7:54 pm

Nonstop3h 01m

$108

DetroitMiami

DTW - MIA

DTWMIA

Detroit Metropolitan Wayne County

Sat 9/20

6:20 pm-9:22 pm

Nonstop3h 02m

Miami

Sat 9/27

8:10 am-11:04 am

Nonstop2h 54m

$159

DetroitMiami

DTW - MIA

DTWMIA

Detroit Metropolitan Wayne County

Mon 8/18

6:15 am-9:18 am

Nonstop3h 03m

$56

DetroitMiami

DTW - MIA

DTWMIA

Detroit Metropolitan Wayne County

Sun 8/31

8:00 am-2:05 pm

1 stop6h 05m

$90

DetroitMiami

DTW - MIA

DTWMIA

Detroit Metropolitan Wayne County

Sat 8/9

12:53 pm-8:39 pm

1 stop7h 46m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Detroit to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Detroit to Key Largo. Price data was last updated on July 25, 2025.

The best time to book flights from Detroit to Key Largo is 18 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

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

Find hourly flight availability from Detroit 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 July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to Key Largo as you normally would.

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

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

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

Weekly flight availability from Detroit to Key Largo

Explore weekly flight availability from Detroit 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 July 31, 2025.

The most flights from DTT to KE9 are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from Detroit 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 July 31, 2025.
Read through reviews of airlines operating flights from Detroit to Key Largo, such as Southwest, Delta, and Spirit Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.9
Fair
3,239 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Detroit 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 Detroit to Key Largo?

    Most people fly from Detroit All airports (DTT) if they book a flight from Detroit to Key Largo. On average, All airports has 13 outbound flights to Key Largo per day from 6 airlines. Detroit All airports is conveniently located just 0.6 mi from Detroit’s city center.

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

    The cheapest airlines for a one-way flight from Detroit to Key Largo are Spirit Airlines ($56), Southwest ($90), and Frontier ($99).

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

    No one likes to see their flight delayed. When booking a flight from Detroit to Key Largo consider choosing American Airlines (97%), Qatar Airways (97%) or Spirit Airlines (81%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Detroit to Key Largo?

    Looking at all options, your cheapest flight can be booked for $52. While the most popular route (Detroit Metropolitan Wayne County - Miami) can be booked for $88 on average our data indicates $884 when flying from Detroit to Key Largo.

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

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

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

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

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

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

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

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Top 6 airlines flying from Detroit to Key Largo

Discover the top 6 airlines that operate flights from Detroit 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$80Average$202FlexibilityNo cancel feeOn-time65%
FrontierCheapest$99Average$156FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$158Average$466FlexibilityNo cancel feeOn-time63%
DeltaCheapest$161Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$205Average$472FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$218Average$443FlexibilityNo cancel feeOn-time69%

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