$100 Cheap Flights to Osan

Popular airlines to Osan

How much is the cheapest flight to Osan?

Prices were available within the past 7 days and start at $100 for one-way flights and $182 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Jeju Air
Asiana Airlines
Hahn Air Systems
Korean Air
T'Way Air

Find the cheapest month to fly from Columbus (CMH) to Seoul (ICN)

February is typically the cheapest month to fly

From $860 - $1,969 per traveler.

Graph displaying average flight prices per month

Alternative airports near Osan

Prices were available within the past 7 days. Prices and availability are subject to change.

Tips to find the cheapest flights to Osan

The cheapest day to fly

Get started finding a cheap flight to Osan on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

July is the cheapest month to fly to Osan. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Osan. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Osan, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Osan

The lowest price for round-trip flights to Osan in 2025 starts from from $182, while one-way tickets start from from $100. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Osan. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Osan

Jeju Air, Asiana Airlines, Hahn Air Systems, Korean Air, T'Way Air, EVA Airways, Air Canada are just some of the airlines that can typically offer cheap tickets to Osan. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Osan and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Osan, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Osan. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Osan plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Osan

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Osan.

Stopover savings

The cheapest tickets to Osan are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Osan. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Osan for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Osan. Simply download the free Expedia app to your smart device and activate Osan flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Osan. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

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

What month is the cheapest to fly to Osan?
July is typically the least expensive month for flights to Osan*. Look out for affordable flights during this time as you could snag a great discount. *Cheapest month to fly is based on the month with the cheapest flight found on Expedia.com in the next 330 days.
Which US cities fly direct to Osan?
Choose from 13 US cities that have direct flights to Osan. While booking on Expedia, check the "Direct flights only" filter to find nonstop itineraries. Fly to Osan from any of these cities:

  • Los Angeles
  • San Francisco
  • New York
  • Seattle
  • Atlanta

How to find a cheap flight to Osan?
Book well in advance or search for a cheap flight to Osan during the off-season, such as February and April. Leaving on a Thursday could also save you an average of 16% compared to a Sunday flight.* The Expedia app makes it even easier to know exactly when to book. Just turn on the toggle for "Watch prices" and you'll receive an alert as soon as fares go down.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Osan?
Being flexible about your plans can help you to find last-minute deals on cheap flights to Osan. To view all the available options, try looking at different ticket types, tweaking your Osan trip dates, leaving from an alternative airport or going with another airline.
How far in advance should I book a flight to Osan?
Find the departure dates you want and a fare that's easy on your pocket by booking your domestic flight to Osan up to 28 days in advance. Lock in tickets between two and four months ahead if you're traveling to Osan from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Osan?
Generally, you can get cheap flights to Osan on Sundays. Travelers can save about 8% on average compared to booking on a Friday, which is often the most expensive day for tickets.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Osan?
Osan is accessible from 142 airports worldwide through 71 carriers, with Incheon Intl. Airport (ICN) as its primary entry point. Choose from these top airlines to Osan when booking your trip:

  • Shandong Airlines
  • Jeju Air
  • Korean Air
  • Jin Air

Where do you fly into Osan?
Osan's main gateway is Gimpo Intl. Airport (GMP). If you'd like other nearby options when flying to Osan, consider Incheon Intl. Airport (ICN), Cheongju Intl. Airport (CJJ) or Suwon (SWU-Suwon Airbase). It's also possible to fly to Osan through Wonju Airport (WJU).
How far is the airport from central Osan?
You'll be around 30 mi northwest of the center of Osan after arriving at Gimpo Intl. Airport (GMP).
Can I save money by booking an Osan trip package?
Bundle your flight and hotel and you could save hundreds of dollars. Better yet, you can add extras like car rentals and tours to your Osan flight and hotel package deal. With Expedia, it's easy to book all your Osan travel plans in the same place.
Can I change or cancel my flight to Osan?
You can typically cancel or change your flight to Osan within 24 hours of booking. However, keep in mind that some flights are non-refundable. In those cases, you may receive credit for future travel instead of a direct refund. It's important to check the airline's terms of service in your itinerary for exact details. You can use Expedia's "No cancel fee" or "Changes included" filters during your search to find cheap flights to Osan with flexible change policies. To learn more, head to our Customer Service Portal.
Flights to Osan information
Destination airport
Gimpo Intl.
Destination airport IATA code
GMP
Destination city name
Seoul
Roundtrip price
$182

Trending flights to Osan

Prices were available within the past 7 days and start at $100 for one-way flights and $182 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China

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*Available to One Key members.