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Cheap Flights to Knox County from $38

View $38 flight on Thu, Oct 22, 2026Opens in a new window

Popular airlines to Knox County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

  • Alaska Airlines

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Today's featured flight deals to Knox County

NonstopCarry-on includedLower price than typical

How much is the cheapest flight to Knox County?

Prices were available within the past 7 days and start at $38 for one-way flights and $76 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air
Allegiant Air
Allegiant Air
Breeze Airways
Allegiant Air
Breeze Airways
Southwest Airlines
United
Delta
American Airlines

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

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 $76. 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 $76 and $213. Many lucky travelers scored one-way tickets from Washington (IAD) for as low as $38.
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 $76 and $213. 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.