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Key Largo

$143+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — MIA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Sioux Falls Joe Foss Field to Key Largo are usually found in September or June, booked 21 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 September 17, 2025.

Round-trip from

$283
(Kiwi.com)

One-way from

$143
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$343
From Sioux Falls Joe Foss Field to Key Largo
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One-way flight from Sioux Falls Joe Foss Field to Key Largo
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Highest demand for flights based on searches. 11% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:23 pmFSD - MIA
2 stops18h 48mMultiple Airlines
Mon 11/36:00 amMIA - FSD
1 stop15h 02mMultiple Airlines
Deal found 9/16$283
This American Airlines deal was found by Cheapflights users on 9/17. 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 11/11:27 pmFSD - MIA
1 stop7h 07mAmerican Airlines
Sat 11/86:25 amMIA - FSD
1 stop7h 48mAmerican Airlines
Deal found 9/17$289
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 11/245:18 amFSD - MIA
2 stops9h 29mDelta
Thu 11/278:05 amMIA - FSD
2 stops9h 47mDelta
Deal found 9/16$299
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/192:54 pmFSD - MIA
1 stop8h 50mFrontier
Sun 9/216:00 amMIA - FSD
1 stop9h 09mFrontier
Deal found 9/15$310
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/282:54 pmFSD - MIA
1 stop8h 50mFrontier
Mon 9/296:00 amMIA - FSD
1 stop9h 09mFrontier
Deal found 9/17$316
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:37 pmFSD - MIA
1 stop15h 44mMultiple Airlines
Tue 9/306:25 pmMIA - FSD
2 stops39h 02mMultiple Airlines
Deal found 9/16$329
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:32 pmFSD - MIA
1 stop7h 03mAmerican Airlines
Sun 11/95:18 amMIA - FSD
1 stop8h 05mAmerican Airlines
Deal found 9/16$344
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:54 pmFSD - MIA
1 stop8h 50mFrontier
Sun 9/286:00 amMIA - FSD
1 stop9h 09mFrontier
Deal found 9/17$358
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/292:54 pmFSD - MIA
2 stops45h 06mMultiple Airlines
Fri 10/312:41 pmMIA - FSD
1 stop9h 01mMultiple Airlines
Deal found 9/16$363
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Sun 9/282:54 pmFSD - MIA
1 stop8h 50mFrontier
Sat 10/412:18 pmMIA - FSD
2 stops26h 51mFrontier
Deal found 9/17$367

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 September 17, 2025.
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

Mon 11/24

5:18 am-3:47 pm

2 stops9h 29m

Miami

Thu 11/27

8:05 am-4:52 pm

2 stops9h 47m

$299

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 10/31

1:32 pm-9:35 pm

1 stop7h 03m

Miami

Sun 11/9

5:18 am-12:23 pm

1 stop8h 05m

$344

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Sat 9/27

12:19 pm-8:52 pm

1 stop7h 33m

Miami

Sat 10/4

2:37 pm-9:23 pm

1 stop7h 46m

$379

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Sat 9/27

10:48 am-5:30 pm

1 stop5h 42m

Miami

Sat 10/4

8:10 am-3:26 pm

2 stops8h 16m

$384

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Thu 11/6

1:13 pm-9:16 pm

1 stop7h 03m

Miami

Mon 11/10

10:07 pm-10:28 am

1 stop13h 21m

$393

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Fri 10/31

1:32 pm-8:26 pm

1 stop5h 54m

Miami

Mon 11/10

10:07 pm-10:28 am

1 stop13h 21m

$416

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Mon 9/29

2:54 pm-9:38 am

2 stops17h 44m

Miami

Fri 10/3

6:00 am-2:09 pm

1 stop9h 09m

$455

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Thu 10/2

8:00 am-3:11 pm

1 stop6h 11m

Miami

Mon 10/6

8:05 am-4:10 pm

1 stop9h 05m

$459

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Sat 9/27

5:00 am-1:34 pm

1 stop7h 34m

Miami

Mon 9/29

6:10 pm-11:02 pm

1 stop5h 52m

$469

Sioux FallsMiami

FSD - MIA

FSDMIA

Sioux Falls Joe Foss Field

Mon 9/29

5:00 am-1:34 pm

1 stop7h 34m

Miami

Sat 10/4

4:25 pm-11:02 pm

1 stop7h 37m

$469

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 19 results
1
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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 September 12, 2025.

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 21 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, September is the cheapest month in which you can book a flight from Sioux Falls to Key Largo (average of $232). Flying from Sioux Falls 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 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 September 17, 2025.

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

How much does it cost to fly round-trip from Sioux Falls 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 September 17, 2025.
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
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
699 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $344, Delta can have you in Key Largo from Sioux Falls in 7h 03m. Airlines will cover a distance of 1537 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$90Average$208FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$253Average$499FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$269Average$550FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$499FlexibilityNo cancel feeOn-timeN/A

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