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Key West

$278+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — EYW
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
1 adult, Economy
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Cheap 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 March 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Sat 6/275:55 pm
FSD
-
EYW
1 stop20h 27m
Allegiant Air
Fri 7/34:41 pm
EYW
-
FSD
1 stop25h 43m
Allegiant Air
Deal found 3/8$278
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/1510:45 am
FSD
-
EYW
1 stop23h 19m
Multiple Airlines
Tue 5/191:14 pm
EYW
-
FSD
1 stop24h 09m
Multiple Airlines
Deal found 3/9$355
This American Airlines deal was found by Cheapflights users on 3/9. 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 3/246:50 am
FSD
-
EYW
2 stops8h 59m
American Airlines
Wed 4/12:25 pm
EYW
-
FSD
1 stop8h 15m
American Airlines
Deal found 3/9$359
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 3/235:55 pm
FSD
-
EYW
2 stops17h 26m
Multiple Airlines
Thu 3/2612:25 pm
EYW
-
FSD
1 stop29h 40m
Multiple Airlines
Deal found 3/9$372
This American Airlines deal was found by Cheapflights users on 3/8. 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 5/81:41 pm
FSD
-
EYW
2 stops8h 17m
American Airlines
Tue 5/122:29 pm
EYW
-
FSD
1 stop8h 25m
American Airlines
Deal found 3/8$374

Find 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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$278
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$556
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. 5% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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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 March 13, 2026.
Use the filters below to find and compare flights from Sioux Falls to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 5/15

10:45 am-11:04 am

1 stop23h 19m

Key West

Tue 5/19

1:14 pm-12:23 pm

1 stop24h 09m

$355

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Mon 6/15

11:41 am-12:34 pm

2 stops23h 53m

Key West

Mon 6/22

3:25 pm-12:24 pm

1 stop21h 59m

$501

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Mon 5/11

7:39 pm-6:19 pm

1 stop21h 40m

Key West

Sat 5/16

2:01 pm-11:06 pm

2 stops10h 05m

$550
Quickest round-trip

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 3/24

5:20 am-1:43 pm

1 stop7h 23m

Key West

Wed 4/1

2:40 pm-10:12 pm

1 stop8h 32m

$568

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 4/18

6:10 am-4:42 pm

2 stops9h 32m

Key West

Wed 4/22

4:38 pm-9:54 pm

2 stops30h 16m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Sorted by cheapest first

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Key West flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 March 13, 2026.
Get a feel of what it's like to fly with 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.
United Airlines
7.4
Good
9,418 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,418 reviews
United Airlines
7.4
Good
9,418 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,448 reviews
United Airlines
7.4
Good
9,418 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 7h 23m. Fly via American Airlines or Delta to get the fastest option. The distance from Sioux Falls to Key West is about 1563 mi. This flight may include one or multiple stops.

  • 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. Another option worth looking into is United Airlines, starting at $490 round trip. You may be able to fly from Sioux Falls to Key West for 37% 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.

See more FAQs

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Top 2 airlines flying from Sioux Falls to Key West

Discover the top 2 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 March 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$310Average$492FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$490Average$793FlexibilityNo cancel feeOn-time69%

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