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 United Airlines, with the lowest prices starting at $343 and $431, 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.

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, January can be a great choice for travel to Key West. Flights to Key West from Sioux Falls in January are about $539 on average during January, but can be found for as low as $286.

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.

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.

$283+ Flights from Sioux Falls to Key West

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Cheap flight deals from Sioux Falls to Key West

Round-trip from	$283 (American Airlines)
Popular in	April
Cheapest in	January
Average price	$618

From Sioux Falls Joe Foss Field to Key West

Search Deals

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 June 12, 2025.

Sat 11/86:55 amFSD - EYW

1 stop8h 21mAmerican Airlines

Wed 11/123:50 pmEYW - FSD

1 stop6h 08mAmerican Airlines

Deal found 6/12

$283

Tue 10/75:25 amFSD - EYW

1 stop6h 43mDelta

Wed 10/152:35 pmEYW - FSD

1 stop8h 36mDelta

Deal found 6/12

$343

Sat 11/88:00 amFSD - EYW

3 stops23h 00mUnited Airlines

Wed 11/128:45 amEYW - FSD

2 stops14h 01mUnited Airlines

Deal found 6/10

$431

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 June 12, 2025.

Sat 11/86:55 amFSD - EYW

1 stop8h 21mAmerican Airlines

Wed 11/123:50 pmEYW - FSD

1 stop6h 08mAmerican Airlines

Deal found 6/12

$283

Tue 10/75:25 amFSD - EYW

1 stop6h 43mDelta

Wed 10/152:35 pmEYW - FSD

1 stop8h 36mDelta

Deal found 6/12

$343

Sat 11/88:00 amFSD - EYW

3 stops23h 00mUnited Airlines

Wed 11/128:45 amEYW - FSD

2 stops14h 01mUnited Airlines

Deal found 6/10

$431

Last-minute flights from Sioux Falls to Key West
Discover last-minute flight deals from Sioux Falls to Key West. Data last updated June 12, 2025 and is based on user searches.

Thu 7/248:00 amFSD - EYW

2 stops9h 05mUnited Airlines

Mon 7/286:45 pmEYW - FSD

2 stops29h 52mUnited Airlines

Deal found 6/10

$524

Thu 7/246:21 amFSD - EYW

1 stop8h 51mAmerican Airlines

Mon 7/282:44 pmEYW - FSD

2 stops10h 15mAmerican Airlines

Deal found 6/10

$634

Thu 7/245:15 amFSD - EYW

1 stop6h 53mDelta

Mon 7/286:27 pmEYW - FSD

1 stop5h 36mDelta

Deal found 6/10

$644

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

Sat 11/8

6:55 am-4:16 pm

1 stop8h 21m

Key West

Wed 11/12

3:50 pm-8:58 pm

1 stop6h 08m

$283

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 10/7

5:25 am-1:08 pm

1 stop6h 43m

Key West

Wed 10/15

2:35 pm-10:11 pm

1 stop8h 36m

$343

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 11/8

8:00 am-8:00 am

3 stops23h 00m

Key West

Wed 11/12

8:45 am-9:46 pm

2 stops14h 01m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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

7,950 reviews

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

7,950 reviews

Delta

8.0

Very good

7,950 reviews

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

8,790 reviews

Delta

8.0

Very good

7,950 reviews

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

7,950 reviews

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

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 United Airlines, with the lowest prices starting at $343 and $431, 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

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
Delta	Cheapest$288	Average$563	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$298	Average$553	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$353	Average$538	FlexibilityNo cancel fee	On-time69%

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$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.

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

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 June 12, 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 June 12, 2025.

Cheapflights Fare Finder

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

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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Book with Flexibility

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 June 12, 2025.