$477 Cheap Flights from Pasco (PSC) to Seoul (ICN)

View $477 flight on Mon, Jan 19, 2026Opens in a new window

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

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Cheap Flights from Pasco to Seoul (PSC-ICN)

Prices were available within the past 7 days and start at $477 for one-way flights and $833 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Feb 7 - Sat, Feb 14
PSC
Pasco
ICN
Seoul
$833 Roundtrip, found 5 days ago
$833
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Feb 7 from Pasco to Seoul, returning Sat, Feb 14, priced at $833 found 5 days ago
Alaska Airlines
Sun, Sep 6 - Mon, Sep 21
PSC
Pasco
ICN
Seoul
$938 Roundtrip, found 3 days ago
$938
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, Sep 6 from Pasco to Seoul, returning Mon, Sep 21, priced at $938 found 3 days ago
United
Wed, Feb 11 - Wed, Feb 18
PSC
Pasco
ICN
Seoul
$939 Roundtrip, found 2 days ago
$939
Roundtrip
found 2 days ago
Select United flight, departing Wed, Feb 11 from Pasco to Seoul, returning Wed, Feb 18, priced at $939 found 2 days ago
Delta
Thu, Feb 26 - Fri, Mar 13
PSC
Pasco
ICN
Seoul
$944 Roundtrip, found 2 days ago
$944
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Feb 26 from Pasco to Seoul, returning Fri, Mar 13, priced at $944 found 2 days ago
Delta
Sun, Feb 8 - Fri, Feb 20
PSC
Pasco
ICN
Seoul
$949 Roundtrip, found 2 days ago
$949
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Feb 8 from Pasco to Seoul, returning Fri, Feb 20, priced at $949 found 2 days ago
Alaska Airlines
Thu, Feb 12 - Sun, Mar 1
PSC
Pasco
ICN
Seoul
$951 Roundtrip, found 9 hours ago
$951
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Thu, Feb 12 from Pasco to Seoul, returning Sun, Mar 1, priced at $951 found 9 hours ago
Alaska Airlines
Thu, Feb 12 - Sun, Mar 1
PSC
Pasco
ICN
Seoul
$956 Roundtrip, found 9 hours ago
$956
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Thu, Feb 12 from Pasco to Seoul, returning Sun, Mar 1, priced at $956 found 9 hours ago
Delta
Mon, Mar 2 - Fri, Mar 13
PSC
Pasco
ICN
Seoul
$961 Roundtrip, found 2 days ago
$961
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Mar 2 from Pasco to Seoul, returning Fri, Mar 13, priced at $961 found 2 days ago
Hawaiian Airlines
Sun, Feb 8 - Sun, Feb 15
PSC
Pasco
ICN
Seoul
$964 Roundtrip, found 2 days ago
$964
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sun, Feb 8 from Pasco to Seoul, returning Sun, Feb 15, priced at $964 found 2 days ago
Korean Air
Thu, Feb 12 - Thu, Feb 19
PSC
Pasco
ICN
Seoul
$1,170 Roundtrip, found 1 day ago
$1,170
Roundtrip
found 1 day ago
Select Korean Air flight, departing Thu, Feb 12 from Pasco to Seoul, returning Thu, Feb 19, priced at $1,170 found 1 day ago
Flights from Pasco (PSC) to Seoul (ICN)
Origin airport
Tri-Cities
Destination airport
Incheon Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Korean Air, United
Roundtrip price
$833
Distance
5371 mi

Pasco to Seoul Flights

The cheapest times to fly from Pasco to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Pasco to Seoul are during the month of February. You can find some of the cheapest flights from Pasco to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pasco to Seoul

Sunday is one of the best days to book for cheap flights from Pasco to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Pasco to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Pasco to Seoul in 2026. You can also book with separate airlines for your outbound and return journeys, from $477 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Pasco to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Pasco to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN) cost?
Secure a cheap one-way flight from $477 or cheap return flight from $833 from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN)?
Planning your trip for February may help you find better deals, as it's the cheapest month for flights between PSC and ICN. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN)?
To find the cheapest airline that'll fly you from PSC to ICN, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN)?
You'll have to book a flight with a layover when traveling from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from PSC to ICN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN)?
To reach Incheon Intl. Airport (ICN) on schedule, pick a flight that takes off from Tri-Cities Airport (PSC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN) last-minute?
Waiting until right before your break to book your flight from PSC to ICN often results in higher prices. While you might find some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a PSC to ICN flight and hotel package?
Compared with arranging hotels and flights separately, booking a PSC to ICN flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the stress out of travel planning. Just secure your flights and select from our wide range of stays, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Incheon Intl. Airport (ICN)?
In most instances, you're able to reschedule or cancel your PSC to ICN flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want more details, visit our Customer Service portal.

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*Available to One Key members.