$615 Cheap Flights from Seoul (ICN) to Idaho Falls (IDA)

View $615 flight on Fri, Dec 12, 2025Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)

Cheap Flights from Seoul to Idaho Falls (ICN-IDA)

Prices were available within the past 7 days and start at $615 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA) cost?
Snag a cheap one-way flight from $615 or cheap return flight from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)?
is the least expensive month to fly from ICN to IDA. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ICN to IDA flight.
How many flights per day from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)?
There are no daily direct flights from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from ICN to IDA?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on a range of factors, including 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 Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)?
Choose a flight from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Idaho Falls Regional Airport (IDA) last-minute?
Booking your plane ticket from ICN to IDA shortly before your trip is usually more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an ICN to IDA flight and hotel package?
Securing an ICN to IDA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our extensive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Idaho Falls Regional Airport (IDA)?
You can usually cancel or reschedule your ICN to IDA 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 possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Incheon Intl.
Destination airport
Idaho Falls Regional
Distance
5749 mi

Book with confidence

Seoul to Idaho Falls Flights

The cheapest times to fly from Seoul to Idaho Falls

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

 

The best time to book a flight from Seoul to Idaho Falls

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

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 Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $615 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 Idaho Falls 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 Idaho Falls 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 Idaho Falls Flights

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*Available to One Key members.