FSD - EYW

$334 Find Cheap Flights from Sioux Falls to Key West

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to Key West departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Key West

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Key West, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Key West, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$334
Typical prices: $533-$343
Allegiant Air
Fri 10/9Mon 10/12
FSD - EYW • 1 stop
Cheapest one-way
$379
American Airlines
Wed 10/7
FSD - EYW • 2 stops
Top airlines
Cheapest • from $334 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Sioux Falls and Key West. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $278 (round-trip)
Shortest trip • 6h 34m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Key West!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sioux Falls to Key West (FSD-EYW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux Falls to Key West that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux Falls to Key West

Fri, Oct 9 - Mon, Oct 12
Allegiant Air Logo
10:09 am - 9:02 am
FSD
-
EYW
21h 53m
1 stop
Allegiant Air Logo
2:54 pm - 12:25 pm
EYW
-
FSD
22h 31m
1 stop
$334Allegiant Air
Fri, Oct 9 - Mon, Oct 12
Allegiant Air Logo
10:09 am - 9:02 am
FSD
-
EYW
21h 53m
1 stop
Allegiant Air Logo
2:54 pm - 12:25 pm
EYW
-
FSD
22h 31m
1 stop
$340Allegiant Air
Wed, Sep 16 - Tue, Sep 22
American Airlines Logo
6:00 am - 7:17 pm
FSD
-
EYW
12h 17m
2 stops
American Airlines Logo
1:47 pm - 12:20 am
EYW
-
FSD
11h 33m
2 stops
$346American Airlines
Wed, Oct 28 - Sat, Oct 31
Delta Logo
5:15 am - 5:11 pm
FSD
-
EYW
10h 56m
2 stops
Delta Logo
2:35 pm - 10:12 pm
EYW
-
FSD
8h 37m
1 stop
$376Delta
Wed, Sep 16 - Tue, Sep 22
American Airlines Logo
7:00 am - 7:17 pm
FSD
-
EYW
11h 17m
2 stops
American Airlines Logo
11:30 am - 7:43 pm
EYW
-
FSD
9h 13m
2 stops
$386American Airlines
Mon, Dec 7 - Sat, Dec 12
United Airlines Logo
7:40 am - 3:06 pm
FSD
-
EYW
6h 26m
1 stop
United Airlines Logo
4:05 pm - 9:43 pm
EYW
-
FSD
6h 38m
1 stop
$388United Airlines
Wed, Aug 5 - Tue, Aug 11
American Airlines Logo
6:00 am - 4:18 pm
FSD
-
EYW
9h 18m
2 stops
American Airlines Logo
11:30 am - 7:59 pm
EYW
-
FSD
9h 29m
2 stops
$399American Airlines
Wed, Oct 28 - Sat, Oct 31
Delta Logo
5:15 am - 5:11 pm
FSD
-
EYW
10h 56m
2 stops
Delta Logo
2:35 pm - 10:12 pm
EYW
-
FSD
8h 37m
1 stop
$406Delta
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
7:40 am - 3:06 pm
FSD
-
EYW
6h 26m
1 stop
United Airlines Logo
4:05 pm - 9:43 pm
EYW
-
FSD
6h 38m
1 stop
$423United Airlines
Wed, Aug 5 - Tue, Aug 11
American Airlines Logo
6:00 am - 4:18 pm
FSD
-
EYW
9h 18m
2 stops
American Airlines Logo
4:50 pm - 12:30 am
EYW
-
FSD
8h 40m
2 stops
$432American Airlines
Booking Insights

KAYAK's insights & trends for Sioux Falls to Key West flights

Get data-powered insights and trends into flights from Sioux Falls to Key West to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Sioux Falls to Key West?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sioux Falls to Key West departing in October.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls to Key West, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sioux Falls to Key West is September, where tickets cost $386 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $1,105 and $657 respectively.

Good to know

Low seasonSeptember
Cheapest flight$334
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Sioux Falls to Key West

When to book flights from Sioux Falls to Key West

Are your dates flexible? Find out the best times to travel from Sioux Falls to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sioux Falls to Key West

  • What is the cheapest flight from Sioux Falls to Key West?

    In the last 5 days, the lowest price for a flight from Sioux Falls to Key West was $334 for a round-trip ticket.

  • Do I need a passport to fly between Sioux Falls and Key West?

    A passport is not required to fly from Sioux Falls to Key West.

  • Which aircraft models fly most regularly from Sioux Falls to Key West?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sioux Falls to Key West?

    Star Alliance, and oneworld are the airline alliances operating flights between Sioux Falls and Key West, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Sioux Falls to Key West, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to Key West are United Airlines and American Airlines. With an average price for the route of $714 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $444 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Sioux Falls to Key West?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux Falls to Key West.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux Falls to Key West?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Key West from Sioux Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux Falls to Key West?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Key West with an airline and back to Sioux Falls with another airline. Booking your flights between Sioux Falls and EYW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls to Key West?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Key West from Sioux Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Sioux Falls to Key West

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls to Key West. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux Falls to Key West? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9845 reviews
6.6Food
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

2.0 MediocreAnonymous, Jun 2026
ORF - EWR
Read more United Airlines reviews

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

We sat on plane at gate delayed without communication as to why we were just sitting there

Flight was delayed by 6 hours... the level of incompetence was truly astounding. I won't be flying American Airlines again. I don't care if AA is direct and there is a layover with another airline, I'll take the layover.

Little time between flight from Dallas to flight to Gainesville. We chose this one, 43 minutes between, because the price for a connection with at least an hour between, was so much higher. Had to ask passengers on the Dallas flight to please allow us to deplane ahead of them. The economy passengers allowed this. We had to walk very fast to the next gate, 35 gates away. Thankfully all in the same terminal. Getting to the small Gainesville plane was a little confusing as you enter an area that is boarding many small planes at the same time. We stood in the wrong line for about 15 seconds before realizing it was not our Gainesville flight. Since I had boarded at this gate in the past, I knew to check the signs carefully so we weren’t lost. The first class seat experience was wonderful. I really enjoyed the upgrade. We were offered an alcohol drink as soon as we sat down. I got something different but it was a great gesture especially since we really had to hurry to make the flight. We had packed expecting we might miss this connection, but made it. Our luggage didn’t miss the flight. American Airlines delivered our bags to our home the next day. That was very convenient!

The plane was large, not full, but one with 3 seats near each window and 4 in a row in the middle of the plane. There were screens on the backs of the seats for entertainment and information. To use the entertainment one needs ear plugs that physically plug into the screen. My husband had some he let me use as I only had blue tooth type. The stewards gave out some headphones to some, but when my neighbor asked for some, the steward said no. So maybe they ran out? Idk. Bring the old kind of headphones or earbuds if you want entertainment in case this is the type of entertainment offered. We had a very tight connection in Miami. 43 minutes. The other economy passengers allowed us to get ahead of them because I asked if we could since we were near boarding time for our next flight and 35 gates away. They were extremely kind. First class wasn’t going to allow us to pass through. We did make the next flight. Our baggage didn’t, but they were delivered to us the next day and we were prepared with essentials in our carry on packs.

Flight left on time. Captain provided relevant announcements. We had to wait 45 minutes to desembark due to the ramp closed because of lightening.

So overall the flight was just average and nothing special. They overbooked some of the flights and they ended up running out of overhead storage space so we had to check our carry-ons which wasn't terrible but we were inconvenienced because of the second connecting flight with a long layover we couldn't get our bags until the final destination. Most of the flight attendants were pretty good and overall the meals were not that great because the chicken was dry and overcooked. They also didn't provide butter or any kind of spread with the bread which is cheap and concerning. The American airlines staff at the check-in counter was kind of unprofessional because this lady just started singing in the middle of checking us in and that's weird. The worst part of the flights was the terrible conditions of the bathrooms which were unclean and did not have toilet paper or toilet tissue available which is kind of insane for a 14-hour and 8 and 1/2 hour flight.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

I was able to get the AA customer Service desk to put me on an earlier flight without any issues.

Incredibly delayed. First delay was due to plane coming in being late. Resulted in 30 minute delay. Boarded and then had multiple mechanical issues. Was on plane for an hour until they told people they could get off if they wanted but couldn't come back. Then gate agent rushed in and said they had lost control of who went off and we would all have to deplane and then get back on. They said flight had not been cancelled. Then while sitting waiting to board again they announced it would take two hours to get new plane and to wait at new gate. New plane arrived, reboarded only to find out that pilots had timed out. Waited for new pilots. In that time one of the flight attendants timed out. Never received food or water while waiting. Was confusing mess as to what was happening. Even flight attendants and gate agents were getting frustrated. Almost 6 hours delayed. Called American to received flight credit but can't get anywhere as Kayak reservation and don't have a ticket number. Reached out to Kayak but never heard back.

Everything you need to know for your flight from Sioux Falls to Key West

Information on your arrival and departure airports