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Cheap Flights to Knox County from $41

View $41 flight on Fri, Aug 21, 2026Opens in a new window

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 $41 for one-way flights and $82 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Nov 22 - Sun, Nov 29
ORD
Chicago
TRI
Tri-Cities
$249 Roundtrip, found 1 hour ago
$249
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Nov 22 from Chicago to Tri-Cities, returning Sun, Nov 29, priced at $249 found 1 hour ago
United
Fri, Jan 15 - Sun, Jan 17
ORD
Chicago
LEX
Lexington
$249 Roundtrip, just found
$249
Roundtrip
just found
Select United flight, departing Fri, Jan 15 from Chicago to Lexington, returning Sun, Jan 17, priced at $249 just found
American Airlines
Fri, Nov 13 - Mon, Nov 16
ORD
Chicago
TYS
Knoxville
$249 Roundtrip, just found
$249
Roundtrip
just found
Select American Airlines flight, departing Fri, Nov 13 from Chicago to Knoxville, returning Mon, Nov 16, priced at $249 just found
United
Fri, Aug 28 - Sun, Aug 30
ORD
Chicago
TYS
Knoxville
$249 Roundtrip, just found
$249
Roundtrip
just found
Select United flight, departing Fri, Aug 28 from Chicago to Knoxville, returning Sun, Aug 30, priced at $249 just found
Frontier Airlines
Thu, Jul 23 - Fri, Jul 31
ORD
Chicago
TYS
Knoxville
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Jul 23 from Chicago to Knoxville, returning Fri, Jul 31, priced at $250 found 4 days ago
Delta
Sat, Jul 4 - Tue, Jul 28
ORD
Chicago
TRI
Tri-Cities
$267 Roundtrip, found 6 days ago
$267
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Jul 4 from Chicago to Tri-Cities, returning Tue, Jul 28, priced at $267 found 6 days ago
Southwest Airlines
Sat, Aug 22 - Wed, Aug 26
LGA
New York
TYS
Knoxville
$279 Roundtrip, found 5 hours ago
$279
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Sat, Aug 22 from New York to Knoxville, returning Wed, Aug 26, priced at $279 found 5 hours ago
American Airlines
Wed, Aug 12 - Sat, Aug 15
EWR
New York
TRI
Tri-Cities
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Aug 12 from New York to Tri-Cities, returning Sat, Aug 15, priced at $281 found 2 days ago
American Airlines
Sat, Aug 15 - Tue, Aug 18
EWR
New York
LEX
Lexington
$281 Roundtrip, found 17 hours ago
$281
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug 15 from New York to Lexington, returning Tue, Aug 18, priced at $281 found 17 hours ago
American Airlines
Wed, Oct 14 - Wed, Oct 21
EWR
New York
TYS
Knoxville
$281 Roundtrip, found 3 days ago
$281
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Oct 14 from New York to Knoxville, returning Wed, Oct 21, priced at $281 found 3 days 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.

Breeze Airways
Fri, Aug 21 - Mon, Aug 24
IAD
Washington
TRI
Tri-Cities
$82 Roundtrip, just found
$82
Roundtrip
just found
Select Breeze Airways flight, departing Fri, Aug 21 from Washington to Tri-Cities, returning Mon, Aug 24, priced at $82 just found

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 $82. 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 $82 and $675. Many lucky travelers scored one-way tickets from New York (LGA) for as low as $41.
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 $82 and $675. 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.