$499 Cheap Flights from Seoul (ICN) to Helena (HLN)

View $499 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Helena, MT (HLN-Helena Regional)

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Cheap Flights from Seoul to Helena (ICN-HLN)

Prices were available within the past 7 days and start at $499 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 Helena (HLN)
Origin airport
Incheon Intl.
Destination airport
Helena Regional
Distance
5595 mi

Seoul to Helena Flights

The cheapest times to fly from Seoul to Helena

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

 

The best time to book a flight from Seoul to Helena

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

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 Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $499 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 Helena 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 Helena 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 Helena Regional Airport (HLN) cost?
Get a cheap one-way flight from $499 or cheap return flight from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN)?
The cheapest month to fly from ICN to HLN is , when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN)?
To find the cheapest airline that'll fly you from ICN to HLN, use Expedia's filter tool. Customize your search based on what matters most 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 fares upfront.
How many flights per day from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN)?
You'll have to take a flight with a layover when traveling from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN). There are no daily direct flights 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 ICN to HLN?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*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 Helena Regional Airport (HLN)?
To reach Helena Regional Airport (HLN) on schedule, opt for a flight that leaves Incheon Intl. Airport (ICN) before 3 PM. The likelihood 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 Helena Regional Airport (HLN) last-minute?
Last-minute bookings from ICN to HLN are usually more expensive. To secure the best prices, start looking for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket right before your trip.
Is it cheaper to book an ICN to HLN flight and hotel package?
You can save money by securing an ICN to HLN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After choosing your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Helena Regional Airport (HLN)?
It's generally possible to cancel or reschedule your ICN to HLN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.