A waterfall cascading down a rocky slope surrounded by a forest.

Cheap flights to Unicoi County

View €145 flight on Sat, 5 Sept 2026Opens in a new window

Popular airlines to Unicoi County

  • American Airlines

  • Delta

  • United

  • Breeze Airways

  • KLM

  • Allegiant Air

  • Air France

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Unicoi County

Prices were available within the past 7 days and start at €145 for one-way flights and €290 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€290 Return, found 21 hours ago
€290
Return
found 21 hours ago
Select American Airlines flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €290 found 21 hours ago
American Airlines
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€306 Return, found 21 hours ago
€306
Return
found 21 hours ago
Select American Airlines flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €306 found 21 hours ago
Delta
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€323 Return, found 21 hours ago
€323
Return
found 21 hours ago
Select Delta flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €323 found 21 hours ago
Delta
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€328 Return, found 21 hours ago
€328
Return
found 21 hours ago
Select Delta flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €328 found 21 hours ago
American Airlines
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€351 Return, found 21 hours ago
€351
Return
found 21 hours ago
Select American Airlines flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €351 found 21 hours ago
American Airlines
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€368 Return, found 21 hours ago
€368
Return
found 21 hours ago
Select American Airlines flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €368 found 21 hours ago
American Airlines
Sat, 5 Sept - Fri, 11 Sept
SFO
San Francisco
TRI
Tri-Cities
€372 Return, found 21 hours ago
€372
Return
found 21 hours ago
Select American Airlines flight, departing Sat, 5 Sept from San Francisco to Tri-Cities, returning Fri, 11 Sept, priced at €372 found 21 hours ago
United
Mon, 3 May - Sun, 9 May
DUB
Dublin
TRI
Tri-Cities
€630 Return, found 1 day ago
€630
Return
found 1 day ago
Select United flight, departing Mon, 3 May from Dublin to Tri-Cities, returning Sun, 9 May, priced at €630 found 1 day ago
Air France
Mon, 26 Oct - Wed, 4 Nov
DUB
Dublin
TRI
Tri-Cities
€637 Return, found 1 day ago
€637
Return
found 1 day ago
Select Air France flight, departing Mon, 26 Oct from Dublin to Tri-Cities, returning Wed, 4 Nov, priced at €637 found 1 day ago
KLM
Mon, 26 Oct - Wed, 4 Nov
DUB
Dublin
TRI
Tri-Cities
€639 Return, found 1 day ago
€639
Return
found 1 day ago
Select KLM flight, departing Mon, 26 Oct from Dublin to Tri-Cities, returning Wed, 4 Nov, priced at €639 found 1 day ago

Trending flights to Unicoi 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.

United
Mon, 3 May - Sun, 9 May
DUB
Dublin
TRI
Tri-Cities
€630 Return, found 1 day ago
€630
Return
found 1 day ago
Select United flight, departing Mon, 3 May from Dublin to Tri-Cities, returning Sun, 9 May, priced at €630 found 1 day ago

Frequently asked questions

How do I find cheap flights to Unicoi County that have flexible change policies?
When it comes to travelling these days, flexibility is crucial. That's why we've added a "No change fee" search function to help you locate flexible and cheap flights to Unicoi County. It's at the top left of your screen just below the "Flexible change policies" heading.
Which airlines fly to Unicoi County?
Book a seat with one of these airlines and the dynamic region of Unicoi County will be yours to discover:

  • American Airlines - 260 flights to or near Unicoi County each month, including 260 flights to Tri-Cities Regional Airport (TRI) per month.
  • Delta Air Lines - 108 flights to or near Unicoi County each month, including 108 flights to Tri-Cities Regional Airport (TRI) per month.
  • Allegiant Air - 17 flights to or near Unicoi County each month, including 17 flights to Tri-Cities Regional Airport (TRI) per month.

How can I find cheap tickets to Unicoi County?
An excellent strategy for getting your hands on cheap fares is to be flexible with your dates. Begin with searching for your flight to Unicoi County, then click on the "flexible dates" box for a list of prices for nearby days. Another handy tip? Book well ahead of time. To give you an idea of fares, €290 was the lowest price for a flight to Unicoi County in the last seven days.
How much is a flight to Unicoi County?
In the last seven days, return tickets to Unicoi County sold from just €290 and reached a maximum price of €639. For one-way fares taking off from San Francisco (SFO), the lowest amount paid during this time was only €145.
What are the most popular airports to fly into in Unicoi County?
Fly into Tri-Cities Regional Airport (TRI) and experience all that Unicoi County has to offer. As the region's main point of entry, about 385 flights land here each month.
How much is a plane ticket to Unicoi County?
Fares varied from €290 to €639 in the last seven days. When you're ready to book, we're ready to help you secure a great deal to Unicoi County.
What is the best time to go to Unicoi County?
Erwin, Unicoi County's most prominent city, is a great place to check out at anytime. Not a big fan of cold weather? Then journey here from June 20 onward in summer, when average temperatures range from 13ºC to 27ºC. May, August and September is when Erwin lures the biggest crowds.
What months are the cheapest to book a flight to Unicoi County?
February is the cheapest month to purchase a seat for your Unicoi County trip. Fares are priciest throughout December, so keep clear of this time if you can.

Book with confidence

About Unicoi County

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