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Key West

$294+ Cheap flights from Sioux Falls to Key West (FSD - EYW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — EYW
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Find flight deals from Sioux Falls to Key West

Cheapest flights from Sioux Falls to Key West
Explore the most affordable flight options available from Sioux Falls to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:21 amFSD - EYW
1 stop10h 25mAllegiant Air
Thu 11/138:36 pmEYW - FSD
1 stop14h 44mAllegiant Air
Deal found 10/25$321
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:30 amFSD - EYW
1 stop4h 57mDelta
Sat 11/16:17 pmEYW - FSD
1 stop5h 39mDelta
Deal found 10/26$369
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:18 pmFSD - EYW
2 stops27h 07mMultiple Airlines
Thu 11/138:36 pmEYW - FSD
1 stop14h 44mMultiple Airlines
Deal found 10/25$376
This American Airlines deal was found by Cheapflights users on 10/25. 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 10/296:49 amFSD - EYW
1 stop8h 29mAmerican Airlines
Sun 11/22:39 pmEYW - FSD
1 stop7h 30mAmerican Airlines
Deal found 10/25$399
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/46:30 amFSD - EYW
1 stop8h 46mAmerican Airlines
Sat 11/81:08 pmEYW - FSD
1 stop6h 37mAmerican Airlines
Deal found 10/27$402
This Delta deal was found by Cheapflights users on 10/27. 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.
Wed 10/295:30 amFSD - EYW
1 stop6h 32mDelta
Sun 11/26:17 pmEYW - FSD
1 stop5h 39mDelta
Deal found 10/27$434
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/255:29 amFSD - EYW
2 stops10h 37mAmerican Airlines
Tue 12/22:39 pmEYW - FSD
1 stop7h 30mAmerican Airlines
Deal found 10/26$438

Cheap flight deals from Sioux Falls to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$294
(American Airlines)

Popular in

April

Cheapest in

July

Average price

$343
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Key West flights.
Search Deals
From Sioux Falls Joe Foss Field to Key West
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Key West 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 27, 2025.
Use the filters below to find and compare flights from Sioux Falls to Key West that are best for you.

Fly from

Sioux Falls

Fly to

Key West

Route

Depart

Return

Price

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Mon 1/5

7:11 am-4:44 pm

2 stops8h 33m

Key West

Mon 1/12

4:01 pm-9:30 pm

1 stop6h 29m

$294

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 11/4

6:30 am-5:01 pm

2 stops9h 31m

Key West

Sat 11/8

2:36 pm-11:59 pm

2 stops10h 23m

$379

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 1/9

6:00 am-3:25 pm

1 stop8h 25m

Key West

Fri 1/16

1:05 pm-9:26 pm

1 stop9h 21m

$396

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 11/25

5:29 am-5:06 pm

2 stops10h 37m

Key West

Tue 12/2

2:39 pm-9:09 pm

1 stop7h 30m

$438

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sun 11/9

9:21 am-8:46 pm

1 stop10h 25m

Key West

Thu 11/13

12:15 pm-9:46 am

3 stops22h 31m

$442

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Thu 10/30

7:00 am-4:13 pm

1 stop8h 13m

Key West

Sun 11/2

2:39 pm-9:09 pm

1 stop7h 30m

$466

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 1/6

7:30 am-3:17 pm

1 stop6h 47m

Key West

Fri 1/9

4:15 pm-10:47 am

1 stop19h 32m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Sioux Falls to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to Key West in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux Falls-Key West flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux Falls-Key West flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux Falls-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-Key West flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Key West 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 West

What is the cheapest month to book a flight from Sioux Falls to Key West?

Currently, October is the cheapest month in which you can book a flight from Sioux Falls to Key West (average of $295). Flying from Sioux Falls to Key West in April is currently the most expensive (average of $543). 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 Sioux Falls to Key West?

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. 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 West. Reviews last updated October 27, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Sioux Falls to Key West by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,996 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,996 reviews
Delta
7.9
Good
7,996 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,997 reviews
Delta
7.9
Good
7,996 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,033 reviews
Delta
7.9
Good
7,996 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from Sioux Falls to Key West in 8h 33m. Fly via American Airlines to get the fastest option. The distance from Sioux Falls to Key West is about 1563 mi.

  • What are the cheapest airlines flying from Sioux Falls to Key West round-trip?

    Flying on American Airlines is currently your cheapest option to Key West, with prices starting at $310. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $310 and $378, respectively. You may be able to fly from Sioux Falls to Key West for 38% less than the average price by searching for these airlines.

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

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

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

    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 West.

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

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

    Currently, October is the cheapest month in which you can book a flight from Sioux Falls to Key West (average of $295). Flying from Sioux Falls to Key West in April is currently the most expensive (average of $543). 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 3 airlines flying from Sioux Falls to Key West

Discover the top 3 airlines that operate flights from Sioux Falls to Key West. 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 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$310Average$538FlexibilityNo cancel feeOn-time71%
DeltaCheapest$310Average$593FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$378Average$644FlexibilityNo cancel feeOn-time69%

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