$784 Cheap Flights from Seoul (ICN) to Peoria (PIA)

View $784 flight on Mon, May 18, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Peoria, IL (PIA-Greater Peoria Regional)

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Cheap Flights from Seoul to Peoria (ICN-PIA)

Prices were available within the past 7 days and start at $784 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Seoul (ICN) to Peoria (PIA)
Origin airport
Incheon Intl.
Destination airport
Greater Peoria Regional
Distance
6574 mi

Seoul to Peoria Flights

The cheapest times to fly from Seoul to Peoria

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 Seoul to Peoria are during the month of . You can find some of the cheapest flights from Seoul to Peoria with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Peoria

Sunday is one of the best days to book for cheap flights from Seoul to Peoria: 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 Seoul to Peoria

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 Seoul to Peoria in 2026. You can also book with separate airlines for your outbound and return journeys, from $784 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 Seoul to Peoria 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 Seoul to Peoria 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 Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA) cost?
Secure a cheap one-way flight from $784 or cheap return flight from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA)?
The cheapest month to fly from ICN to PIA is , when demand is low. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA)?
To find the cheapest airline that'll fly you from ICN to PIA, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA)?
Direct flights from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ICN to PIA?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA)?
To avoid possible delays on the Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**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 Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA) last-minute?
Booking your plane ticket from ICN to PIA shortly before your getaway is usually more expensive. However, if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an ICN to PIA flight and hotel package?
Compared with arranging hotels and flights separately, booking an ICN to PIA flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Greater Peoria Regional Airport (PIA)?
In most cases, you're able to reschedule or cancel your ICN to PIA flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more information, head to our Customer Service portal.

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*Available to One Key members.