Cheap Flights from Seoul (ICN) to Decatur (DEC)

Popular airlines from Incheon Intl. Airport (ICN) to Decatur, IL (DEC)

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Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Decatur Airport (DEC) cost?
Snag a cheap one-way flight or cheap return flight from Incheon Intl. Airport (ICN) to Decatur Airport (DEC) 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 Incheon Intl. Airport (ICN) to Decatur Airport (DEC)?
The cheapest month to fly from ICN to DEC is , when there's less demand. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Decatur Airport (DEC)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from ICN to DEC. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Incheon Intl. Airport (ICN) to Decatur Airport (DEC)?
You'll need to hop on a flight with a layover when traveling from Incheon Intl. Airport (ICN) to Decatur Airport (DEC). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from ICN to DEC?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Decatur Airport (DEC)?
To arrive at Decatur Airport (DEC) on time, pick a flight that leaves Incheon Intl. Airport (ICN) 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 Incheon Intl. Airport (ICN) to Decatur Airport (DEC) last-minute?
Last-minute bookings from ICN to DEC are generally more expensive. For the cheapest rates, start looking for flights well in advance. That being said, if you can play around with your travel dates, it's possible to land a cheap ticket just before your departure.
Is it cheaper to book an ICN to DEC flight and hotel package?
Booking an ICN to DEC flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Decatur Airport (DEC)?
Generally, it's possible to cancel or reschedule your ICN to DEC flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Incheon Intl.
Destination airport
Decatur
Distance
6645 mi

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Seoul to Decatur Flights

The cheapest times to fly from Seoul to Decatur

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

 

The best time to book a flight from Seoul to Decatur

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

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 Decatur in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Decatur 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 Decatur 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.

 

Seoul to Decatur Flights

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*Available to One Key members.