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Cheap Flights to Washington County from ₩1,359,900

View ₩1,359,900 flight on Wed, Aug 26, 2026Opens in a new window

Popular airlines to Washington County

  • American Airlines

  • Delta

  • KLM

  • Air France

  • Breeze Airways

  • United

  • Virgin Atlantic

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How much is the cheapest flight to Washington County?

Prices were available within the past 7 days and start at ₩1,359,900 for one-way flights and ₩2,356,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Aug 26 - Wed, Sep 9
ICN
Seoul
TRI
Tri-Cities
₩2,356,400 Roundtrip, found 1 day ago
₩2,356,400
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Aug 26 from Seoul to Tri-Cities, returning Wed, Sep 9, priced at ₩2,356,400 found 1 day ago
United
Sat, Dec 26 - Thu, Dec 31
ICN
Seoul
TRI
Tri-Cities
₩2,453,900 Roundtrip, found 5 days ago
₩2,453,900
Roundtrip
found 5 days ago
Select United flight, departing Sat, Dec 26 from Seoul to Tri-Cities, returning Thu, Dec 31, priced at ₩2,453,900 found 5 days ago
American Airlines
Wed, Aug 26 - Wed, Sep 9
ICN
Seoul
TRI
Tri-Cities
₩2,511,400 Roundtrip, found 1 day ago
₩2,511,400
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Aug 26 from Seoul to Tri-Cities, returning Wed, Sep 9, priced at ₩2,511,400 found 1 day ago
Delta
Tue, Sep 22 - Wed, Oct 14
ICN
Seoul
TRI
Tri-Cities
₩2,536,200 Roundtrip, found 4 days ago
₩2,536,200
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep 22 from Seoul to Tri-Cities, returning Wed, Oct 14, priced at ₩2,536,200 found 4 days ago
Delta
Tue, Sep 22 - Wed, Oct 14
ICN
Seoul
TRI
Tri-Cities
₩2,578,200 Roundtrip, found 4 days ago
₩2,578,200
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep 22 from Seoul to Tri-Cities, returning Wed, Oct 14, priced at ₩2,578,200 found 4 days ago
Delta
Tue, Sep 22 - Wed, Oct 14
ICN
Seoul
TRI
Tri-Cities
₩2,620,200 Roundtrip, found 4 days ago
₩2,620,200
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep 22 from Seoul to Tri-Cities, returning Wed, Oct 14, priced at ₩2,620,200 found 4 days ago
Delta
Tue, Sep 22 - Wed, Oct 14
ICN
Seoul
TRI
Tri-Cities
₩2,636,200 Roundtrip, found 4 days ago
₩2,636,200
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep 22 from Seoul to Tri-Cities, returning Wed, Oct 14, priced at ₩2,636,200 found 4 days ago
American Airlines
Thu, Sep 24 - Fri, Oct 9
ICN
Seoul
TRI
Tri-Cities
₩2,645,000 Roundtrip, found 4 days ago
₩2,645,000
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Sep 24 from Seoul to Tri-Cities, returning Fri, Oct 9, priced at ₩2,645,000 found 4 days ago
Korean Air
Tue, Sep 22 - Wed, Oct 14
ICN
Seoul
TRI
Tri-Cities
₩2,720,200 Roundtrip, found 4 days ago
₩2,720,200
Roundtrip
found 4 days ago
Select Korean Air flight, departing Tue, Sep 22 from Seoul to Tri-Cities, returning Wed, Oct 14, priced at ₩2,720,200 found 4 days ago
Cathay Pacific
Fri, Aug 14 - Tue, Aug 18
ICN
Seoul
TRI
Tri-Cities
₩2,889,900 Roundtrip, found 1 hour ago
₩2,889,900
Roundtrip
found 1 hour ago
Select Cathay Pacific flight, departing Fri, Aug 14 from Seoul to Tri-Cities, returning Tue, Aug 18, priced at ₩2,889,900 found 1 hour ago

Trending flights to Washington 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.

American Airlines
Wed, Aug 26 - Wed, Sep 9
ICN
Seoul
TRI
Tri-Cities
₩2,356,400 Roundtrip, found 1 day ago
₩2,356,400
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Aug 26 from Seoul to Tri-Cities, returning Wed, Sep 9, priced at ₩2,356,400 found 1 day ago

Frequently asked questions

How do I find cheap flights to Washington County that have flexible change policies?
When it comes to flying these days, flexibility is crucial. That's why we've added a "No change fee" search function to help you find cheap and flexible flights to Washington County. It's near the top left of your screen under the "Flexible change policies" subheading.
Which airlines fly to Washington County?
When you're ready to reserve your airfare to or near Washington County, these quality airlines look forward to welcoming you on board:

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

How can I find cheap tickets to Washington County?
For an unbeatable deal to Washington County, book ahead of time. Also think about using Expedia's handy "flexible dates" feature at the top of your search results. This will display prices for the days around your travel dates. In the last seven days, ₩2,356,400 was the best price for a flight to Washington County.
How much is a flight to Washington County?
There were lots of affordable fares up for grabs in the last seven days, with the cost of a round-trip flight to Washington County varying between ₩2,356,400 and ₩2,889,900. Many lucky travelers scored one-way tickets from Seoul (ICN) for only ₩1,359,900.
What are the most popular airports to fly into in Washington County?
Book your flight to Tri-Cities Regional Airport (TRI) and experience everything that Washington County has to offer. As the region's main entry point, about 385 flights touch down here each month.
When is the cheapest time to fly to Washington County?
If you're not set on what date you travel to Washington County, try to depart early on in the week. The cheapest day to take off is normally Tuesday, followed closely by Monday. Saturday is typically the priciest day, with a lot of people preferring to take off on the weekend.
How much is a plane ticket to Washington County?
In the last seven days, fares to Washington County varied between ₩2,356,400 and ₩2,889,900. Prices rise as your travel date nears, so land yourself a bargain today.
What is the best time to go to Washington County?
If you're eager to enjoy Washington County's most populous city at its liveliest, travel to Johnson City sometime during March, April and August. Similar to most places in the Northern Hemisphere, summer here begins June 20, with temperatures ranging between 60ºF and 85ºF.
What months are the cheapest to book a flight to Washington County?
Book your ticket in February for bargain flight deals to Washington County. The festive month of December is generally the most expensive time to buy a seat.

Book with confidence

About Washington County

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