Cheap Flights to Knox County from $75 (2026/2027)

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How Much Does it Cost To Fly To Knox County?

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Mon, Oct 12 - Wed, Oct 21
DEN
Denver Intl.
FSD
Sioux Falls Regional
$150 Roundtrip, found 2 hours ago
$150
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Oct 12 from Denver Intl. to Sioux Falls Regional, returning Wed, Oct 21, priced at $150 found 2 hours ago
Sat, Oct 24 - Fri, Oct 30
AZA
Phoenix - Mesa Gateway
FSD
Sioux Falls Regional
$174 Roundtrip, found 1 hour ago
$174
Roundtrip
found 1 hour ago
Select Allegiant Air flight, departing Sat, Oct 24 from Phoenix - Mesa Gateway to Sioux Falls Regional, returning Fri, Oct 30, priced at $174 found 1 hour ago
Mon, Jul 27 - Wed, Aug 5
SLC
Salt Lake City Intl.
FSD
Sioux Falls Regional
$231 Roundtrip, found 2 days ago
$231
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Jul 27 from Salt Lake City Intl. to Sioux Falls Regional, returning Wed, Aug 5, priced at $231 found 2 days ago
Fri, Aug 7 - Sun, Aug 9
DEN
Denver Intl.
SUX
Sioux Gateway
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select United flight, departing Fri, Aug 7 from Denver Intl. to Sioux Gateway, returning Sun, Aug 9, priced at $240 found 3 days ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$249 Roundtrip, found 15 hours ago
$249
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $249 found 15 hours ago
Wed, Aug 12 - Mon, Aug 17
PHX
Sky Harbor Intl.
FSD
Sioux Falls Regional
$250 Roundtrip, found 6 days ago
$250
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Sky Harbor Intl. to Sioux Falls Regional, returning Mon, Aug 17, priced at $250 found 6 days ago
Wed, Aug 5 - Mon, Aug 10
LAX
Los Angeles Intl.
FSD
Sioux Falls Regional
$256 Roundtrip, found 2 days ago
$256
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Aug 5 from Los Angeles Intl. to Sioux Falls Regional, returning Mon, Aug 10, priced at $256 found 2 days ago
Wed, Aug 5 - Mon, Aug 10
SFO
San Francisco Intl.
FSD
Sioux Falls Regional
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Aug 5 from San Francisco Intl. to Sioux Falls Regional, returning Mon, Aug 10, priced at $261 found 1 day ago
OriginDestinationTravel DatesFlights From*
BNASioux FallsAugust 31 to September 7$130
DENSioux FallsJuly 29 to August 5$150
DENSioux CityAugust 5 to August 9$240
ORDSioux FallsSeptember 16 to September 23$249
DFWSioux FallsOctober 5 to October 10$266
LGASioux FallsAugust 15 to August 16$298
DFWSioux CityAugust 1 to August 7$301
IAHSioux FallsAugust 7 to August 11$319
PDXSioux FallsSeptember 24 to September 28$329
LGASioux CityAugust 28 to August 29$360
BUFSioux FallsJuly 23 to July 27$365
ORDSioux CityJuly 29 to August 3$428
PDXSioux CitySeptember 15 to September 22$448
BNASioux CityAugust 21 to August 24$461
LAXSioux CityJuly 25 to August 20$755
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
PDXSioux FallsJuly 11 to July 18$399
DENSioux FallsJuly 11 to July 14$407
JFKSioux FallsJuly 11 to July 18$464
DFWSioux FallsJuly 12 to July 18$475
DENSioux CityJuly 12 to July 13$541
LAXSioux FallsJuly 12 to July 12$836
*Prices include taxes and fees

Best Knox County Flight and Hotel Packages

Price found within the past 48 hours. Click for updated prices.
Days Inn by Wyndham Sioux City
2.0-star property

Days Inn by Wyndham Sioux City

Aug 16 - Aug 21

5 night stay

Detroit (DTW) to Sioux City (SUX)

United • Non-stop roundtrip • Coach
Price was $765, price is now $720 per person
$720
per person
found 17 hours ago
Hard Rock Hotel & Casino Sioux City
4.0-star property

Hard Rock Hotel & Casino Sioux City

Aug 16 - Aug 21

5 night stay

Detroit (DTW) to Sioux City (SUX)

United • Non-stop roundtrip • Coach
Price was $938, price is now $855 per person
$855
per person
found 17 hours ago
Inn On Central
3.0-star property

Inn On Central

Aug 16 - Aug 21

5 night stay

Detroit (DTW) to Sioux City (SUX)

United • Non-stop roundtrip • Coach
Price was $909, price is now $859 per person
$859
per person
found 17 hours ago
Don't see what you're looking for?
See all available trips from Detroit to Knox County
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Travelers ❤️ These Knox County 🏨

Modern Lewis and Clark lake home with lake views and 3 min drive to the beach!

Modern Lewis and Clark lake home with lake views and 3 min drive to the beach!

Crofton NE
Stay at this vacation home in Crofton. Enjoy a garden, laundry facilities, and patios. Popular attractions Hideaway Acres State Recreation Area and Deep Water Recreation Area are located nearby.
10/10 Exceptional! (7 reviews)
"Lots of room! Friendly Host!"

Reviewed on Jul 7, 2026

Opens in a new windowModern Lewis and Clark lake home with lake views and 3 min drive to the beach!
Fully furnished lake house with cozy spaces, full kitchen, and lake views.

Fully furnished lake house with cozy spaces, full kitchen, and lake views.

Crofton NE
Stay at this vacation home in Crofton. Enjoy laundry facilities, patios, and air conditioning. Popular attractions Deep Water Recreation Area and Hideaway Acres State Recreation Area are located nearby.
10/10 Exceptional! (1 review)
"Very specious house! Great house for a large group!"

Reviewed on Jun 23, 2026

Opens in a new windowFully furnished lake house with cozy spaces, full kitchen, and lake views.
Cozy cabin near Lewis and Clark Lake and CJ’s at the Lake

Cozy cabin near Lewis and Clark Lake and CJ’s at the Lake

Crofton NE
Stay at this cabin in Crofton. Enjoy air conditioning. Popular attractions Deep Water Recreation Area and Lewis and Clark Lake State Recreation Area are located nearby.
10/10 Exceptional! (3 reviews)
"Very good experience"

Reviewed on Jun 21, 2026

Opens in a new windowCozy cabin near Lewis and Clark Lake and CJ’s at the Lake
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The Historic Argo Hotel

The Historic Argo Hotel

3 out of 5
211 Kansas St Crofton NE
Stay at this B&B in Crofton. Enjoy free breakfast, free WiFi, and free parking.
8/10 Very Good! (1 review)
"Rooms were clean. Bed was great. Breakfast was delicious. ac comfortable. Might reconsider toys in foyer."

Reviewed on Jun 25, 2026

Opens in a new windowThe Historic Argo Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

How much is the cheapest flight to Knox County?
During the last seven days, the cheapest roundtrip flight to Knox County cost $130 on this site. Take a look at our fabulous deals, make your booking and start planning for your next travel experience. This price was available on Travelocity for flights to Knox County departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly to Knox County?
If you've been dreaming of a break in Knox County, October is the cheapest period to take to the skies. This is based on Travelocity's direct return flight demand from January to December last year. Choose your preferred dates and lock in your seat today.
How can I check my flight status to Knox County?
"Trips" has your back when it comes to the details of your flight to Knox County. Our customer portal lets you organize everything in the one place, from checking the status of your flight to making updates to your booking. Click on Trips at the top right of the Travelocity homepage and then sign in. Alternatively, download the Travelocity app and access your itinerary while you're on the go. Whether you've got the family flying with you or you're a lone adventurer, all your bookings are right at your fingertips.
How do I find the best deals on flights to Knox County?
Try these tricks — book well in advance, avoid peak season and be flexible with your dates. If you don't have a specific date in mind, search for your flight to Knox County on Travelocity and hit "Flexible dates" at the top of the page. This will help you locate any cheaper fares on surrounding days. $130 was the most affordable price for a roundtrip flight to Knox County in the last seven days. This price was available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Why should I book my flight to Knox County with Travelocity?
An awesome vacation is only a click or two away when you make a reservation with Travelocity. With a wide range of choices and competitive deals on cheap family flights, hotels, rental cars and more, we make it simple to find the best prices for you. You can also make use of our 24/7 customer assistance and free cancellation policies on most hotels during your trip. Wander wisely with us and score your cheap flights to Knox County today.
What are the most popular flight routes to Knox County?
Browse through these leading flight routes to Knox County and start organizing your next vacation:

  • Minneapolis, MN (MSP-Minneapolis - St. Paul Intl.) to Eppley Field Airport (OMA) - 1,131 flights a month.
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Eppley Field Airport (OMA) - 1,053 flights a month.
  • Chicago, IL (ORD-O'Hare Intl.) to Eppley Field Airport (OMA) - 975 flights a month.

How much is a flight to Knox County on average?
Get your next vacation off to a great start by grabbing a fabulous deal with Travelocity. In the last seven days, roundtrip flights to Knox County cost between $130 and $836. Take a look at our site and secure an airfare that suits your budget. These prices were available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
How long is the average flight to Knox County?
Check out these favorite routes to get an idea on how long you'll be in your seat during a direct flight to Knox County:

  • Minneapolis, MN (MSP-Minneapolis - St. Paul Intl.) to Eppley Field Airport (OMA) - 1 hour and 13 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Eppley Field Airport (OMA) - 2 hours and 14 minutes
  • Chicago, IL (ORD-O'Hare Intl.) to Eppley Field Airport (OMA) - 1 hour and 38 minutes

What can I expect on a flight to Knox County?
That depends an on a few factors. Is your flight to Knox County an hour long or many hours long? Have you booked with a full-service airline or a low-cost option? These things will impact your experience on board. When it comes to long distance flights, almost all airlines include drinks, warm meals and entertainment. Low-cost carriers are a terrific option when it comes to cheap flights for family vacations or if your journey is a quick one. But, they often won't have the same inclusions as a full-service carrier.