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Cheap Flights to Knox County from $47

View $47 flight on Sat, Sep 26, 2026Opens in a new window

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Popular airlines to Knox County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • JetBlue Airways

  • Alaska Airlines

  • Frontier Airlines

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How much is the cheapest flight to Knox County?

Prices were available within the past 7 days and start at $47 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air
Thu, Aug 20 - Sun, Aug 23
SFB
Orlando
TRI
Tri-Cities
$78 Roundtrip, found 1 day ago
$78
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Thu, Aug 20 from Orlando to Tri-Cities, returning Sun, Aug 23, priced at $78 found 1 day ago
Allegiant Air
Thu, Aug 13 - Mon, Aug 17
SFB
Orlando
TYS
Knoxville
$78 Roundtrip, found 1 hour ago
$78
Roundtrip
found 1 hour ago
Select Allegiant Air flight, departing Thu, Aug 13 from Orlando to Knoxville, returning Mon, Aug 17, priced at $78 found 1 hour ago
Allegiant Air
Thu, Aug 6 - Fri, Aug 7
SFB
Orlando
TRI
Tri-Cities
$82 Roundtrip, found 12 hours ago
$82
Roundtrip
found 12 hours ago
Select Allegiant Air flight, departing Thu, Aug 6 from Orlando to Tri-Cities, returning Fri, Aug 7, priced at $82 found 12 hours ago
Allegiant Air
Fri, Jul 31 - Fri, Aug 7
SFB
Orlando
TRI
Tri-Cities
$85 Roundtrip, found 1 day ago
$85
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Fri, Jul 31 from Orlando to Tri-Cities, returning Fri, Aug 7, priced at $85 found 1 day ago
Allegiant Air
Mon, Aug 10 - Fri, Aug 14
SFB
Orlando
TRI
Tri-Cities
$86 Roundtrip, found 18 hours ago
$86
Roundtrip
found 18 hours ago
Select Allegiant Air flight, departing Mon, Aug 10 from Orlando to Tri-Cities, returning Fri, Aug 14, priced at $86 found 18 hours ago
Allegiant Air
Fri, Aug 14 - Sat, Aug 22
FLL
Fort Lauderdale
TYS
Knoxville
$86 Roundtrip, found 1 hour ago
$86
Roundtrip
found 1 hour ago
Select Allegiant Air flight, departing Fri, Aug 14 from Fort Lauderdale to Knoxville, returning Sat, Aug 22, priced at $86 found 1 hour ago
Frontier Airlines
Sun, Aug 2 - Fri, Aug 7
IAH
Houston
TYS
Knoxville
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Aug 2 from Houston to Knoxville, returning Fri, Aug 7, priced at $255 found 1 day ago
United
Mon, Aug 31 - Tue, Sep 1
BOS
Boston
TYS
Knoxville
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 31 from Boston to Knoxville, returning Tue, Sep 1, priced at $258 found 3 days ago
American Airlines
Thu, Sep 10 - Sat, Sep 12
FLL
Fort Lauderdale
TYS
Knoxville
$259 Roundtrip, found 1 hour ago
$259
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, Sep 10 from Fort Lauderdale to Knoxville, returning Sat, Sep 12, priced at $259 found 1 hour ago
Delta
Thu, Sep 10 - Sat, Sep 12
FLL
Fort Lauderdale
TYS
Knoxville
$259 Roundtrip, found 1 hour ago
$259
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Sep 10 from Fort Lauderdale to Knoxville, returning Sat, Sep 12, priced at $259 found 1 hour ago

Trending flights to Knox County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air
Thu, Aug 20 - Sun, Aug 23
SFB
Orlando
TRI
Tri-Cities
$78 Roundtrip, found 1 day ago
$78
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Thu, Aug 20 from Orlando to Tri-Cities, returning Sun, Aug 23, priced at $78 found 1 day ago

Frequently asked questions

How do I find cheap flights to Knox County that have flexible change policies?
We know that things can change from one day to the next, so reserving a flexible ticket with Expedia is a wise idea. Tick the "No change fee" box directly below the "Flexible change policies" filter. Your affordable, flexible flight to Knox County is just a few clicks away.
Which airlines fly to Knox County?
With a great selection of airlines flying into or near Knox County, you have plenty of choice:

  • American Airlines - 733 flights to or near Knox County each month, including 733 flights to Louisville Intl. Airport (SDF) per month.
  • United Airlines - 472 flights to or near Knox County each month, including 472 flights to Louisville Intl. Airport (SDF) per month.
  • Delta Air Lines - 450 flights to or near Knox County each month, including 450 flights to Louisville Intl. Airport (SDF) per month.

How can I find cheap tickets to Knox County?
One of the easiest ways to bag cheap tickets to Knox County is to be flexible with your travel dates. Search for your flights, then click "flexible dates" above the results. You'll see the cheapest prices for nearby days. The best price for a flight to Knox County in the last seven days was $78. Booking well in advance will generally help you pick up an even bigger bargain.
How much is a flight to Knox County?
There were lots of budget-friendly fares up for grabs in the last seven days, with the cost of a round-trip flight to Knox County ranging between $78 and $259. Many lucky travelers scored one-way tickets from Fort Lauderdale (FLL) for as low as $47.
What are the most popular airports to fly into in Knox County?
Start organizing your Knox County trip by booking a fare on one of the 2,155 flights every month to Louisville Intl. Airport (SDF). This is the region's main entryway.
When is the cheapest time to fly to Knox County?
Taking off on a Tuesday, followed by a Monday, is usually the best way to land the cheapest flight. Stay away from the weekends if you can, because Saturday is typically the costliest day. Spend the money you saved having a good time in Knox County instead!
How much is a plane ticket to Knox County?
In the last seven days, plane tickets to Knox County fluctuated between $78 and $259. The early bird catches the worm, so snap up a good deal today.
What months are the cheapest to book a flight to Knox County?
Snap up a ticket in February for low-priced flights to Knox County. The festive month of December is generally the most expensive time to purchase a fare.
How long is a flight to Knox County?
It depends on a couple of different things, including where you set off from and whether you're traveling on a multi-stop or direct flight. Below are three of the busiest domestic routes to Knox County and their average flight times:

  • Chicago, IL (ORD-OHare Intl.) to Louisville Intl. Airport (SDF) - 1 hour and 27 minutes
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Louisville Intl. Airport (SDF) - 2 hours and 7 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Louisville Intl. Airport (SDF) - 1 hour and 20 minutes

What is the best time to go to Knox County?
Summer starts June 20 in the Northern Hemisphere, and these warmer months are a good time to explore the well-known Knox County city of Barbourville. Average temperatures fluctuate between 60ºF and 85ºF at this time of year. The biggest crowds flock here in March, April and July.

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.