$735 Cheap Flights from Seoul (ICN) to Pasco (PSC)

View $735 flight on Tue, Nov 3, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Tri-Cities Airport (PSC)

Cheap Flights from Seoul to Pasco (ICN-PSC)

Prices were available within the past 7 days and start at $735 for one-way flights and $1,175 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Apr 23 - Mon, Apr 27
ICN
Seoul
PSC
Pasco
$1,175 Roundtrip, found 4 days ago
$1,175
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Apr 23 from Seoul to Pasco, returning Mon, Apr 27, priced at $1,175 found 4 days ago
Alaska Airlines
Sat, May 23 - Sat, May 30
ICN
Seoul
PSC
Pasco
$1,181 Roundtrip, found 4 days ago
$1,181
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 23 from Seoul to Pasco, returning Sat, May 30, priced at $1,181 found 4 days ago
Alaska Airlines
Sun, May 24 - Sun, May 31
ICN
Seoul
PSC
Pasco
$1,184 Roundtrip, found 3 days ago
$1,184
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, May 24 from Seoul to Pasco, returning Sun, May 31, priced at $1,184 found 3 days ago
Alaska Airlines
Sat, May 23 - Sat, May 30
ICN
Seoul
PSC
Pasco
$1,187 Roundtrip, found 4 days ago
$1,187
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 23 from Seoul to Pasco, returning Sat, May 30, priced at $1,187 found 4 days ago
Alaska Airlines
Sun, May 24 - Sun, May 31
ICN
Seoul
PSC
Pasco
$1,250 Roundtrip, found 3 days ago
$1,250
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, May 24 from Seoul to Pasco, returning Sun, May 31, priced at $1,250 found 3 days ago
Alaska Airlines
Sat, May 23 - Sat, May 30
ICN
Seoul
PSC
Pasco
$1,297 Roundtrip, found 4 days ago
$1,297
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 23 from Seoul to Pasco, returning Sat, May 30, priced at $1,297 found 4 days ago
Alaska Airlines
Sat, May 23 - Sat, May 30
ICN
Seoul
PSC
Pasco
$1,303 Roundtrip, found 4 days ago
$1,303
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 23 from Seoul to Pasco, returning Sat, May 30, priced at $1,303 found 4 days ago
Alaska Airlines
Sat, May 23 - Sat, May 30
ICN
Seoul
PSC
Pasco
$1,313 Roundtrip, found 4 days ago
$1,313
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 23 from Seoul to Pasco, returning Sat, May 30, priced at $1,313 found 4 days ago
Asiana Airlines
Sun, May 24 - Sun, May 31
ICN
Seoul
PSC
Pasco
$1,457 Roundtrip, found 3 days ago
$1,457
Roundtrip
found 3 days ago
Select Asiana Airlines flight, departing Sun, May 24 from Seoul to Pasco, returning Sun, May 31, priced at $1,457 found 3 days ago
Korean Air
Thu, Apr 23 - Mon, Apr 27
ICN
Seoul
PSC
Pasco
$1,547 Roundtrip, found 4 days ago
$1,547
Roundtrip
found 4 days ago
Select Korean Air flight, departing Thu, Apr 23 from Seoul to Pasco, returning Mon, Apr 27, priced at $1,547 found 4 days ago

Frequently asked questions

How much does a flight from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) cost?
You can find cheap one-way flights from $735 and cheap return flights from $1,175 Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) with Expedia. One-way flights generally range between $628 and $3201, and roundtrip flights usually range from $1189 to $6481. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
The cheapest month to fly from ICN to PSC is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
Enter ICN to PSC and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
China Airlines is one of the cheapest airlines offering connecting flights from Incheon Intl. (ICN) to Tri-Cities (PSC) with a layover in Taoyuan Intl. (TPE), starting from around $1,951 for a round-trip ticket. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
To find a cheap flight from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from ICN to PSC. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
Flying from ICN to PSC with a connection usually takes about 16 hours, traveling roughly 5,372 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
Business class seats are offered on the ICN to PSC route with Delta Air Lines and Korean Air.
How do I earn miles on a Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) flight with Expedia?
It's easy to earn miles on a Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Pasco from Incheon Intl. (ICN)?
If you're planning to travel to Pasco from Incheon Intl. (ICN), you can fly into Tri-Cities (PSC) Some flights may connect through major hubs like Dallas-Fort Worth Intl. (DFW), Vancouver Intl. (YVR), Taoyuan Intl. (TPE) before reaching Pasco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) at the last minute?
Typically, booking a last minute flight from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package?
Securing a Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities)?
If you booked your Seoul (ICN-Incheon Intl.) to Pasco, WA (PSC-Tri-Cities) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
Tri-Cities
Roundtrip price
$1,174
Distance
5371 mi

*Flight schedules are subject to change.

*Available to One Key members.