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Key West

$283+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — EYW
kesä 20 — kesä 271
pe 6/20
pe 6/27
1 adult, Economy
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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 kesäkuu 15, 2025.

Round-trip from

$283
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$618
From Sioux Falls Joe Foss Field to Key West
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Highest demand for flights based on searches. 12% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 kesäkuu 15, 2025.

This American Airlines deal was found by Cheapflights users on 6/14. 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.
la 11/86:55 amFSD - EYW
1 stop8h 21mAmerican Airlines
ke 11/123:50 pmEYW - FSD
1 stop6h 08mAmerican Airlines
Deal found 6/14$283
This Delta deal was found by Cheapflights users on 6/13. 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.
ma 8/46:00 amFSD - EYW
2 stops10h 32mDelta
ke 8/136:22 pmEYW - FSD
1 stop5h 44mDelta
Deal found 6/13$510
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 6/3011:59 amFSD - EYW
2 stops20h 23mMultiple Airlines
pe 7/45:26 pmEYW - FSD
1 stop25h 39mMultiple Airlines
Deal found 6/15$521
This Mytrip deal was found by Cheapflights users on 6/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 6/287:33 pmFSD - EYW
1 stop11h 30mAllegiant Air
ke 7/210:44 amEYW - FSD
2 stops32h 04mAllegiant Air
Deal found 6/13$610
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 6/306:26 pmFSD - EYW
2 stops17h 46mUnited Airlines
pe 7/42:12 pmEYW - FSD
3 stops21h 38mUnited Airlines
Deal found 6/15$648

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 kesäkuu 15, 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

la 11/8

6:55 am-4:16 pm

1 stop8h 21m

Key West

ke 11/12

3:50 pm-8:58 pm

1 stop6h 08m

$283

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

ma 8/4

6:00 am-5:32 pm

2 stops10h 32m

Key West

ke 8/13

6:22 pm-11:06 pm

1 stop5h 44m

$510

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

ma 6/30

11:59 am-9:22 am

2 stops20h 23m

Key West

pe 7/4

5:26 pm-6:05 pm

1 stop25h 39m

$521

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

la 6/28

7:33 pm-8:03 am

1 stop11h 30m

Key West

ke 7/2

10:44 am-5:48 pm

2 stops32h 04m

$610

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

ma 6/30

6:26 pm-1:12 pm

2 stops17h 46m

Key West

pe 7/4

2:12 pm-10:50 am

3 stops21h 38m

$648

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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, August is the cheapest month in which you can book a flight from Sioux Falls to Key West (average of $328). Flying from Sioux Falls to Key West in March is currently the most expensive (average of $493). 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.

Rainfall in Key West by month

Plan your trip to Key West by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

Temperature in Key West by month

Plan your trip to Key West by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

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 kesäkuu 15, 2025.
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

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
8,796 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

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
7.3
Good
724 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

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 West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 $283. Additional round-trip tickets that might be worth considering are offered by Delta and Allegiant Air, with the lowest prices starting at $510 and $610, respectively. You may be able to fly from Sioux Falls to Key West for 47% 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, August is the cheapest month in which you can book a flight from Sioux Falls to Key West (average of $328). Flying from Sioux Falls to Key West in March is currently the most expensive (average of $493). 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 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 kesäkuu 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$563FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$298Average$553FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$353Average$538FlexibilityNo cancel feeOn-time69%

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