A sunset over a calm river with surrounding forested hills.

Cheap Flights to Union County | Popular Routes to Union County from HK$1,039

View HK$1,039 flight on Sat, 5 Sept 2026Opens in a new window

Popular airlines to Union County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Allegiant Air

  • Alaska Airlines

  • Air Canada

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Cheap round-trip flights to Union County

Prices were available within the past 7 days and start at HK$1,039 for one-way flights and HK$2,046 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 3 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,046 Return, found 5 days ago
HK$2,046
Return
found 5 days ago
Select United flight, departing Thu, 3 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,046 found 5 days ago
Delta
Sat, 5 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,067 Return, found 1 day ago
HK$2,067
Return
found 1 day ago
Select Delta flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,067 found 1 day ago
Delta
Sat, 5 Sept - Sun, 13 Sept
BOS
Boston
TYS
Knoxville
HK$2,174 Return, found 5 days ago
HK$2,174
Return
found 5 days ago
Select Delta flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sun, 13 Sept, priced at HK$2,174 found 5 days ago
Delta
Thu, 3 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,185 Return, found 5 days ago
HK$2,185
Return
found 5 days ago
Select Delta flight, departing Thu, 3 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,185 found 5 days ago
Delta
Sat, 5 Sept - Sun, 13 Sept
BOS
Boston
TYS
Knoxville
HK$2,228 Return, found 5 days ago
HK$2,228
Return
found 5 days ago
Select Delta flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sun, 13 Sept, priced at HK$2,228 found 5 days ago
Delta
Sat, 5 Sept - Sun, 13 Sept
BOS
Boston
TYS
Knoxville
HK$2,239 Return, found 5 days ago
HK$2,239
Return
found 5 days ago
Select Delta flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sun, 13 Sept, priced at HK$2,239 found 5 days ago
Delta
Sat, 5 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,292 Return, found 1 day ago
HK$2,292
Return
found 1 day ago
Select Delta flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,292 found 1 day ago
United
Thu, 3 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,346 Return, found 5 days ago
HK$2,346
Return
found 5 days ago
Select United flight, departing Thu, 3 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,346 found 5 days ago
United
Thu, 3 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,358 Return, found 5 days ago
HK$2,358
Return
found 5 days ago
Select United flight, departing Thu, 3 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,358 found 5 days ago
American Airlines
Sat, 5 Sept - Sat, 12 Sept
BOS
Boston
TYS
Knoxville
HK$2,690 Return, found 1 day ago
HK$2,690
Return
found 1 day ago
Select American Airlines flight, departing Sat, 5 Sept from Boston to Knoxville, returning Sat, 12 Sept, priced at HK$2,690 found 1 day ago

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, HK$2,046 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 Boston (BOS), you could've nabbed a bargain fare for just HK$1,039 in the last seven days. Round-trip flights to Union County ranged from only HK$2,046 to HK$2,690 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 HK$2,046 and HK$2,690. 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.

Book with confidence

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.
About Union County
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