Cheap flights to Union County

View €477 flight on Tue, 17 Mar 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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Cheap round-trip flights to Union County

Prices were available within the past 7 days and start at €477 for one-way flights and €330 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€330 Return, found 1 day ago
€330
Return
found 1 day ago
Select American Airlines flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €330 found 1 day ago
Delta
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€338 Return, found 1 day ago
€338
Return
found 1 day ago
Select Delta flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €338 found 1 day ago
Delta
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€356 Return, found 1 day ago
€356
Return
found 1 day ago
Select Delta flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €356 found 1 day ago
United
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€373 Return, found 1 day ago
€373
Return
found 1 day ago
Select United flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €373 found 1 day ago
Delta
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€381 Return, found 1 day ago
€381
Return
found 1 day ago
Select Delta flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €381 found 1 day ago
United
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€398 Return, found 1 day ago
€398
Return
found 1 day ago
Select United flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €398 found 1 day ago
American Airlines
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€415 Return, found 1 day ago
€415
Return
found 1 day ago
Select American Airlines flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €415 found 1 day ago
Delta
Thu, 19 Feb - Wed, 25 Feb
SJU
San Juan
TYS
Knoxville
€432 Return, found 1 day ago
€432
Return
found 1 day ago
Select Delta flight, departing Thu, 19 Feb from San Juan to Knoxville, returning Wed, 25 Feb, priced at €432 found 1 day ago
Lufthansa
Tue, 10 Feb - Tue, 10 Mar
DUB
Dublin
TYS
Knoxville
€469 Return, found 2 days ago
€469
Return
found 2 days ago
Select Lufthansa flight, departing Tue, 10 Feb from Dublin to Knoxville, returning Tue, 10 Mar, priced at €469 found 2 days ago
Swiss International Air Lines
Fri, 30 Jan - Tue, 3 Feb
DUB
Dublin
TYS
Knoxville
€476 Return, found 11 hours ago
€476
Return
found 11 hours ago
Select Swiss International Air Lines flight, departing Fri, 30 Jan from Dublin to Knoxville, returning Tue, 3 Feb, priced at €476 found 11 hours ago

About Union County

Expedia offers flights to Union County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Union County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

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, €330 was the lowest price for a flight to Union County.
How much is a flight to Union County?
If you were travelling one way from Dublin (DUB), you could've nabbed a bargain fare for just €477 in the last seven days. Round-trip flights to Union County ranged from only €330 to €629 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.
How much is a plane ticket to Union County?
In the last seven days, airfares varied between €330 and €629. Swipe through our fantastic deals to Union County, make a booking and then get ready for your getaway!
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 18ºC and 32ºC at this time of year. The largest crowds are found here in February, March and September.
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.

Trending flights to Union County

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

Lufthansa
Tue, 10 Feb - Tue, 10 Mar
DUB
Dublin
TYS
Knoxville
€469 Return, found 2 days ago
€469
Return
found 2 days ago
Select Lufthansa flight, departing Tue, 10 Feb from Dublin to Knoxville, returning Tue, 10 Mar, priced at €469 found 2 days ago
*Available to Expedia members.