Cheap Flights from Seoul (ICN) to Sidney (SDY)

Popular airlines from Incheon Intl. Airport (ICN) to Sidney, MT (SDY-Sidney-Richland Municipal)

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Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY) cost?
Secure a cheap one-way flight or cheap return flight from Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY) 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 Sidney-Richland Municipal Airport (SDY)?
The cheapest month to fly from ICN to SDY is , when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY)?
To find the cheapest airline that'll fly you from ICN to SDY, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. 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 Sidney-Richland Municipal Airport (SDY)?
There aren't any daily direct flights departing from Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from ICN to SDY?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier 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 Sidney-Richland Municipal Airport (SDY)?
To avoid possible delays on the Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY) route, fly before 3 PM. Departures after this hour 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 Sidney-Richland Municipal Airport (SDY) last-minute?
Last-minute bookings from ICN to SDY are generally more expensive. For the lowest rates, start searching for flights as early as possible. 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 SDY flight and hotel package?
You can save money by securing an ICN to SDY flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal accommodations and flights, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Sidney-Richland Municipal Airport (SDY)?
If you reserved your ICN to SDY flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
Sidney-Richland Municipal
Distance
5777 mi

Book with confidence

Seoul to Sidney Flights

The cheapest times to fly from Seoul to Sidney

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

 

The best time to book a flight from Seoul to Sidney

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

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 Sidney in 2025. 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 Sidney 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 Sidney 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 Sidney Flights

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*Available to One Key members.