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Key Largo

$112+ Cheap flights from Sioux Falls (FSD) 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — MIA
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Sioux Falls to Key Largo

Cheapest flights from Sioux Falls to Key Largo
Explore the most affordable flight options available from Sioux Falls to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:16 pm
FSD
-
MIA
2 stops31h 52m
Frontier
Mon 3/95:50 am
MIA
-
FSD
1 stop15h 09m
Frontier
Deal found 2/2$268
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 3/75:19 pm
FSD
-
MIA
1 stop6h 40m
American Airlines
Mon 3/95:10 pm
MIA
-
FSD
1 stop6h 45m
American Airlines
Deal found 2/2$289
This United Airlines deal was found by Cheapflights users on 2/3. 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 4/43:10 pm
FSD
-
MIA
1 stop6h 35m
United Airlines
Wed 4/89:00 am
MIA
-
FSD
2 stops12h 30m
United Airlines
Deal found 2/3$294
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:11 pm
FSD
-
MIA
2 stops19h 26m
Multiple Airlines
Fri 5/18:42 am
MIA
-
FSD
1 stop12h 21m
Multiple Airlines
Deal found 2/2$296
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:54 pm
FSD
-
MIA
1 stop7h 44m
Frontier
Mon 3/95:50 am
MIA
-
FSD
1 stop15h 09m
Frontier
Deal found 2/2$308
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 5/111:41 pm
FSD
-
MIA
1 stop6h 03m
American Airlines
Sat 5/167:15 am
MIA
-
FSD
1 stop6h 41m
American Airlines
Deal found 2/2$314
This United Airlines deal was found by Cheapflights users on 2/3. 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 12/57:45 am
FSD
-
MIA
1 stop8h 34m
United Airlines
Sat 12/124:06 pm
MIA
-
FSD
1 stop6h 32m
United Airlines
Deal found 2/3$315
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/189:00 am
FSD
-
MIA
1 stop9h 53m
United Airlines
Tue 2/249:00 am
MIA
-
FSD
1 stop9h 21m
United Airlines
Deal found 2/1$324
This American Airlines deal was found by Cheapflights users on 2/3. 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 4/35:21 pm
FSD
-
MIA
1 stop6h 38m
American Airlines
Fri 4/106:05 am
MIA
-
FSD
1 stop7h 51m
American Airlines
Deal found 2/3$339
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:41 pm
FSD
-
MIA
1 stop14h 33m
Frontier
Sun 2/226:45 am
MIA
-
FSD
1 stop7h 36m
Frontier
Deal found 2/2$341

Find flight deals from Sioux Falls to Key Largo

Keep the following information in mind while searching for Sioux Falls to Key Largo flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$268
(Kiwi.com)

One-way from

$112
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$498
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Miami flights.
Search Deals
From Sioux Falls Joe Foss Field to Key Largo
Search Deals
One-way flight from Sioux Falls Joe Foss Field to Key Largo
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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 February 4, 2026.
Use the filters below to find and compare flights from Sioux Falls to Key Largo that are best for you.

Fly from

Sioux Falls

Fly to

Key Largo

Route

Depart

Return

Price

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Sat 4/4

3:10 pm-10:45 pm

1 stop6h 35m

Miami

Wed 4/8

7:40 am-4:16 pm

1 stop9h 36m

$289

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Wed 2/18

2:08 pm-9:44 pm

1 stop6h 36m

Miami

Tue 2/24

6:00 am-12:37 pm

1 stop7h 37m

$324

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Wed 2/18

9:00 am-7:53 pm

1 stop9h 53m

Miami

Tue 2/24

9:00 am-5:21 pm

1 stop9h 21m

$324

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 4/3

2:06 pm-11:08 pm

1 stop8h 02m

Miami

Fri 4/10

5:05 am-12:56 pm

1 stop8h 51m

$339

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 2/20

1:41 pm-5:14 am

1 stop14h 33m

Miami

Sun 2/22

6:45 am-1:21 pm

1 stop7h 36m

$341

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Sun 2/22

2:16 pm-5:14 am

1 stop13h 58m

Miami

Fri 2/27

6:25 am-12:56 pm

1 stop7h 31m

$341

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Wed 2/18

10:55 am-9:51 pm

2 stops9h 56m

Miami

Tue 2/24

2:55 pm-10:55 pm

1 stop9h 00m

$354

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 2/20

1:41 pm-5:14 am

1 stop14h 33m

Miami

Sun 2/22

9:53 pm-1:57 pm

2 stops17h 04m

$390

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 4/17

8:30 pm-5:05 am

1 stop31h 35m

$136

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Mon 2/16

2:42 pm-5:14 am

1 stop13h 32m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 18 results
1
2

Best time to book a flight from Sioux Falls to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Sioux Falls to Key Largo. Price data was last updated on January 30, 2026.

The price you pay for your flight from Sioux Falls to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 12 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 Sioux Falls to Key Largo?

Currently, January is the cheapest month in which you can book a flight from Sioux Falls to Key Largo (average of $70). Flying from Sioux Falls to Key Largo in November is currently the most expensive (average of $315). 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 FSD to KE9?

Find hourly flight availability from Sioux Falls 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 February 4, 2026.

A simple way to save on the total cost of your ticket is to fly from Sioux Falls to Key Largo in the evening. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight in the afternoon.

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 February 4, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Sioux Falls to Key Largo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,138 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,217 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

    Sioux Falls Joe Foss Field (FSD), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Sioux Falls to Key Largo. 4 airlines have flights from Joe Foss Field to Key Largo on a regular basis. Booking flights from Sioux Falls Joe Foss Field to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.

  • How long is the flight from Sioux Falls to Key Largo?

    For as low as $289, United Airlines can have you in Key Largo from Sioux Falls in 6h 35m. Airlines will cover a distance of 1537 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from Sioux Falls to Key Largo are American Airlines ($144), Delta ($144), and United Airlines ($189).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux Falls 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 Sioux Falls to Key Largo?

    Currently, January is the cheapest month in which you can book a flight from Sioux Falls to Key Largo (average of $70). Flying from Sioux Falls to Key Largo in November is currently the most expensive (average of $315). 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 4 airlines flying from Sioux Falls to Key Largo

Discover the top 4 airlines that operate flights from Sioux Falls 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$76Average$156FlexibilityNo cancel feeOn-time88%
DeltaCheapest$125Average$431FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$250Average$464FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$569FlexibilityNo cancel feeOn-time69%

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