Cheap Flights to Union County from $54

View $54 flight on Mon, Feb 2, 2026Opens in a new window

Popular airlines to Union County

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • British Airways

    British Airways

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How much is the cheapest flight to Union County?

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Jan 26 - Mon, Feb 2
DEN
Denver
TYS
Knoxville
$108 Roundtrip, found 2 hours ago
$108
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Jan 26 from Denver to Knoxville, returning Mon, Feb 2, priced at $108 found 2 hours ago
Frontier Airlines
Mon, Feb 23 - Mon, Mar 2
DEN
Denver
TYS
Knoxville
$118 Roundtrip, found 2 hours ago
$118
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Feb 23 from Denver to Knoxville, returning Mon, Mar 2, priced at $118 found 2 hours ago
Frontier Airlines
Fri, Jan 23 - Mon, Jan 26
DEN
Denver
TYS
Knoxville
$123 Roundtrip, just found
$123
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Jan 23 from Denver to Knoxville, returning Mon, Jan 26, priced at $123 just found
Frontier Airlines
Fri, Feb 20 - Mon, Feb 23
DEN
Denver
TYS
Knoxville
$133 Roundtrip, found 1 hour ago
$133
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Feb 20 from Denver to Knoxville, returning Mon, Feb 23, priced at $133 found 1 hour ago
Frontier Airlines
Fri, Feb 20 - Mon, Feb 23
DEN
Denver
TYS
Knoxville
$143 Roundtrip, found 11 hours ago
$143
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Fri, Feb 20 from Denver to Knoxville, returning Mon, Feb 23, priced at $143 found 11 hours ago
Frontier Airlines
Fri, Feb 6 - Fri, Feb 13
DEN
Denver
TYS
Knoxville
$148 Roundtrip, found 3 hours ago
$148
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Fri, Feb 6 from Denver to Knoxville, returning Fri, Feb 13, priced at $148 found 3 hours ago
Southwest Airlines
Wed, Apr 8 - Tue, Apr 21
BWI
Baltimore
TYS
Knoxville
$163 Roundtrip, found 6 hours ago
$163
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Wed, Apr 8 from Baltimore to Knoxville, returning Tue, Apr 21, priced at $163 found 6 hours ago
Delta
Tue, Mar 24 - Tue, Mar 31
BWI
Baltimore
TYS
Knoxville
$183 Roundtrip, found 2 hours ago
$183
Roundtrip
found 2 hours ago
Select Delta flight, departing Tue, Mar 24 from Baltimore to Knoxville, returning Tue, Mar 31, priced at $183 found 2 hours ago
American Airlines
Fri, Feb 6 - Mon, Feb 9
ORD
Chicago
TYS
Knoxville
$189 Roundtrip, just found
$189
Roundtrip
just found
Select American Airlines flight, departing Fri, Feb 6 from Chicago to Knoxville, returning Mon, Feb 9, priced at $189 just found
United
Thu, Feb 19 - Tue, Feb 24
ORD
Chicago
TYS
Knoxville
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select United flight, departing Thu, Feb 19 from Chicago to Knoxville, returning Tue, Feb 24, priced at $199 found 1 day ago

Airports in Union County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McGhee Tyson TYS. Cheapest option available. Flights from $329
TYS
McGhee Tyson
Cheapest
Flights from $329

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Union County Flights Information

Airlines serving
Frontier Airlines, Southwest Airlines, American Airlines, Delta, United
Roundtrip price
from $108

Frequently asked questions

How do I find cheap flights to Union County that have flexible change policies?
It's as easy as 1-2-3 with Expedia. Step 1: Type in your travel dates and click "Search." Second step: Check the "No change fee" box just below the "Flexible change policies" filter to the left of your screen. Step 3. Score your flexible and cheap flight to Union County.
Which airlines fly to Union County?
Pack your bags, find your passport and choose between these quality airlines that fly into or near Union County:

  • American Airlines - 585 flights to or near Union County each month, including 585 flights to McGhee Tyson Airport (TYS) per month.
  • United Airlines - 329 flights to or near Union County each month, including 329 flights to McGhee Tyson Airport (TYS) per month.
  • Delta Air Lines - 320 flights to or near Union County each month, including 320 flights to McGhee Tyson Airport (TYS) per month.

How can I find cheap tickets to Union County?
For an unbeatable deal to Union County, book well ahead. Also take advantage of Expedia's handy "flexible dates" feature at the top of your search results. This will display the cheapest prices for similar time frames. In the last seven days, $108 was the lowest price for a flight to Union County.
How much is a flight to Union County?
If you were traveling one way from Denver (DEN), you could've nabbed a bargain fare for just $54 in the last seven days. Round-trip flights to Union County ranged from only $108 to $199 over the same period.
What are the most popular airports to fly into in Union County?
The number one gateway to Union County, roughly 1,478 flights taxi into McGhee Tyson Airport (TYS) every month. Scout around for an amazing deal, reserve your seat and prepare to discover this fantastic region.
When is the cheapest time to fly to Union County?
Consider jetting off early on in the week to secure the best airfare to Union County. Tuesday is commonly the cheapest day to depart, followed by Monday. Saturday often has the highest prices. This is because a lot of people choose to start their getaway on a weekend.
How much is a plane ticket to Union County?
In the last seven days, airfares varied between $108 and $199. Swipe through our fantastic deals to Union County, make a booking and then get ready for your getaway!
What months are the cheapest to book a flight to Union County?
Book your ticket in February for amazing flight deals to Union County. The month of December is known as the most expensive time to purchase a seat.
How long is a flight to Union County?
Flight times can vary for different reasons, including where you're jetting off from. Here's a list of average flight times for a few of the most well-known domestic routes to Union County:

  • Charlotte, NC (CLT-Charlotte-Douglas Intl.) to McGhee Tyson Airport (TYS) - 1 hour and 7 minutes
  • Chicago, IL (ORD-OHare Intl.) to McGhee Tyson Airport (TYS) - 1 hour and 40 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to McGhee Tyson Airport (TYS) - 55 minutes

What is the best time to go to Union County?
Summer starts June 20 in the Northern Hemisphere, and these warmer months are a fantastic time to check out the top Union County city of Maynardville. Average temperatures fluctuate between 65ºF and 90ºF at this time of year. The largest crowds are found here in February, March and September.

Trending flights to Union 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.

Frontier Airlines
Mon, Jan 26 - Mon, Feb 2
DEN
Denver
TYS
Knoxville
$108 Roundtrip, found 2 hours ago
$108
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Jan 26 from Denver to Knoxville, returning Mon, Feb 2, priced at $108 found 2 hours ago
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