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 $404. Additional round-trip tickets that might be worth considering are offered by United Airlines and Allegiant Air, with the lowest prices starting at $507 and $518, respectively. You may be able to fly from Sioux Falls to Key West for 19% less than the average price by searching for these airlines.

What is the cheapest day to fly from Sioux Falls to Key West?

Travelers seeking maximum savings on their Sioux Falls to Key West flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Sioux Falls to Key West?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Sioux Falls to Key West.

What is the cheapest day to fly round-trip from Sioux Falls to Key West?

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from Sioux Falls to Key West?

Due to multiple factors, expect to potentially pay more when booking in April. For low rates, July can be a great choice for travel to Key West. Flights to Key West from Sioux Falls in July are about $500 on average during July, but can be found for as low as $267.

What is the cheapest time of day to fly from FSD to EYW?

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 West as you normally would.

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.

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.

$344+ Flights from Sioux Falls to Key West

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Cheap flight deals from Sioux Falls to Key West

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$404 (American Airlines)
Popular in	April
Cheapest in	July
Average price	$653

Provider with most accurate pricing for Sioux Falls Joe Foss Field-Key West flight deals.

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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Key West flights.

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From Sioux Falls Joe Foss Field to Key West

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($113 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 April 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 April 9, 2025.

Sat 11/86:55 amFSD - EYW

1 stop8h 21mAmerican Airlines

Wed 11/123:50 pmEYW - FSD

1 stop6h 08mAmerican Airlines

Deal found 4/8

$344

Sat 11/87:45 amFSD - EYW

3 stops29h 15mUnited Airlines

Wed 11/124:05 pmEYW - FSD

1 stop6h 42mUnited Airlines

Deal found 4/8

$402

Fri 4/257:07 pmFSD - EYW

1 stop18h 49mAllegiant Air

Sun 4/2710:23 amEYW - FSD

2 stops32h 54mAllegiant Air

Deal found 4/7

$518

Sat 5/310:52 amFSD - EYW

2 stops8h 38mDelta

Sat 5/106:25 pmEYW - FSD

1 stop6h 00mDelta

Deal found 4/8

$729

Best flights from Sioux Falls to Key West
Discover carefully curated flight deals from Sioux Falls to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2025.

Wed 7/26:35 amFSD - EYW

2 stops11h 27mAmerican Airlines

Wed 7/92:31 pmEYW - FSD

1 stop8h 14mAmerican Airlines

Deal found 4/7

$404

Sat 5/31:50 pmFSD - EYW

2 stops27h 15mUnited Airlines

Sat 5/108:45 amEYW - FSD

2 stops16h 01mUnited Airlines

Deal found 4/8

$507

Fri 4/257:07 pmFSD - EYW

1 stop18h 49mAllegiant Air

Sun 4/2710:23 amEYW - FSD

2 stops32h 54mAllegiant Air

Deal found 4/7

$518

Sat 5/310:52 amFSD - EYW

2 stops8h 38mDelta

Sat 5/106:25 pmEYW - FSD

1 stop6h 00mDelta

Deal found 4/8

$729

Last-minute flights from Sioux Falls to Key West
Discover last-minute flight deals from Sioux Falls to Key West. Data last updated April 9, 2025 and is based on user searches.

Fri 4/257:07 pmFSD - EYW

1 stop18h 49mAllegiant Air

Sun 4/2710:23 amEYW - FSD

2 stops32h 54mAllegiant Air

Deal found 4/7

$518

Sat 5/31:50 pmFSD - EYW

2 stops27h 15mUnited Airlines

Sat 5/108:45 amEYW - FSD

2 stops16h 01mUnited Airlines

Deal found 4/8

$507

Sat 5/310:52 amFSD - EYW

2 stops8h 38mDelta

Sat 5/106:25 pmEYW - FSD

1 stop6h 00mDelta

Deal found 4/8

$729

Fri 5/166:26 amFSD - EYW

2 stops11h 23mAmerican Airlines

Tue 5/202:20 pmEYW - FSD

1 stop8h 17mAmerican Airlines

Deal found 4/8

$488

Cheapflights Fare Finder

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

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 7/2

6:35 am-7:02 pm

2 stops11h 27m

Key West

Wed 7/9

2:31 pm-9:45 pm

1 stop8h 14m

$404

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 5/3

1:50 pm-6:05 pm

2 stops27h 15m

Key West

Sat 5/10

8:45 am-11:46 pm

2 stops16h 01m

$507

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 4/25

7:07 pm-2:56 pm

1 stop18h 49m

Key West

Sun 4/27

10:23 am-6:17 pm

2 stops32h 54m

$518

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 5/3

10:52 am-8:30 pm

2 stops8h 38m

Key West

Sat 5/10

6:25 pm-11:25 pm

1 stop6h 00m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/7

Compare providers for flights from Sioux Falls to Key West

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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.

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

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

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

Delta

8.0

Very good

7,902 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,902 reviews

Delta

8.0

Very good

7,902 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,633 reviews

Delta

8.0

Very good

7,902 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Allegiant Air

7.3

Good

733 reviews

Delta

8.0

Very good

7,902 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,902 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 $404. Additional round-trip tickets that might be worth considering are offered by United Airlines and Allegiant Air, with the lowest prices starting at $507 and $518, respectively. You may be able to fly from Sioux Falls to Key West for 19% 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Sioux Falls to Key West

Other flights to Key West

Top 3 airlines flying from Sioux Falls to Key West

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$286	Average$538	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$288	Average$567	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$353	Average$538	FlexibilityNo cancel fee	On-time69%

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$344+ 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.

Find cheap flights from Sioux Falls to Key West with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sioux Falls to Key West

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Sioux Falls to Key West

Cheapest flights from Sioux Falls to Key WestExplore 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 April 9, 2025.

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 April 9, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sioux Falls to Key West that are best for you.

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 April.

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.

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?

Rainfall in Key West by month

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

Temperature in Key West by month

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

Reviews of airlines servicing Key West

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?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sioux Falls to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Sioux Falls to Key West

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Travel Smart

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 April 9, 2025.