Sullivan County Flights - Book Cheap Flights to Sullivan County

View RM4,081 flight on Sun, 24 May 2026Opens in a new window

Popular airlines to Sullivan County

  • American Airlines

  • Delta

  • United

  • Breeze Airways

  • KLM

  • Air France

  • Qatar Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% 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 Sullivan County

Prices were available within the past 7 days and start at RM4,081 for one-way flights and RM6,271 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,271 Return, found 1 day ago
RM6,271
Return
found 1 day ago
Select Cathay Pacific flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,271 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,644 Return, found 1 day ago
RM6,644
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,644 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,654 Return, found 1 day ago
RM6,654
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,654 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,666 Return, found 1 day ago
RM6,666
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,666 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,676 Return, found 1 day ago
RM6,676
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,676 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,905 Return, found 1 day ago
RM6,905
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,905 found 1 day ago
American Airlines
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,915 Return, found 1 day ago
RM6,915
Return
found 1 day ago
Select American Airlines flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,915 found 1 day ago
Finnair
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,988 Return, found 1 day ago
RM6,988
Return
found 1 day ago
Select Finnair flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,988 found 1 day ago
Qatar Airways
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM6,996 Return, found 1 day ago
RM6,996
Return
found 1 day ago
Select Qatar Airways flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM6,996 found 1 day ago
Delta
Sun, 24 May - Wed, 14 Oct
SIN
Singapore
TRI
Tri-Cities
RM7,578 Return, found 1 day ago
RM7,578
Return
found 1 day ago
Select Delta flight, departing Sun, 24 May from Singapore to Tri-Cities, returning Wed, 14 Oct, priced at RM7,578 found 1 day ago

Frequently asked questions

How do I find cheap flights to Sullivan County that have flexible change policies?
It's as easy as 1-2-3 with Expedia. Firstly, type in your preferred dates and destination and click on "Search." Next step? Check the "No change fee" box directly below the "Flexible change policies" subheading on the top left of your screen. Step 3. Book your flexible and cheap flight to Sullivan County.
Which airlines fly to Sullivan County?
Settle on your holiday dates and then touch down in or near Sullivan County with one of these well-known airlines:

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

How can I find cheap tickets to Sullivan County?
An useful strategy for walking away with cheap tickets is to be flexible with your travel dates. Start by searching for your flight to Sullivan County, then click on the "flexible dates" box for a list of prices for nearby days. Another helpful hint? Book in advance. For an idea of costs, RM6,271 was the lowest price for a flight to Sullivan County in the last seven days.
How much is a flight to Sullivan County?
In the last seven days, return flights to Sullivan County sold for as low as RM6,271 and peaked at RM7,578. For one-way fares taking off from Singapore (SIN), the cheapest seat during this same period was just RM4,081.
What are the most popular airports to fly into in Sullivan County?
The main entryway to Sullivan County, about 385 flights touch down at Tri-Cities Regional Airport (TRI) each month. Keep an eye out for an awesome deal, book your ticket and get ready to discover this sensational region.
How much is a plane ticket to Sullivan County?
In the last seven days, airfares to Sullivan County ranged from RM6,271 to RM7,578.
What is the best time to go to Sullivan County?
March, June and November are the most popular months to explore Kingsport, one of Sullivan County's most fascinating cities. Summer here starts June 20. Average temperatures vary from 16ºC to 29ºC across the season, so consider travelling then if you enjoy warmer weather.
What months are the cheapest to book a flight to Sullivan County?
The ideal month to book well-priced fares to Sullivan County is February. Bear in mind that in the USA, an expensive time to reserve a seat is during the busy month of December.

Book with confidence

About Sullivan County

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

Explore a world of travel with Expedia

*Available to Expedia members.