What are the cheapest flights from Seoul to Jeju City?

Based on Trip.com data, the cheapest Seoul → Jeju City flights are direct round-trip deals starting around US$25-$30 with low-cost carriers like Air Seoul, Jin Air or Eastar Jet, though prices vary by date and availability. One-way fares can be even lower.

💰 Airlines Operating the Seoul to Jeju Route

Flights from Seoul to Jeju primarily depart from Gimpo International Airport (GMP), which is the main hub for domestic travel in South Korea. While Incheon International Airport (ICN) serves international routes, Gimpo offers the most frequent and often the cheapest connections to Jeju.

Several airlines compete on this busy route, including both full-service and low-cost carriers (LCCs):

• Low-Cost Carriers (LCCs):
• • Jeju Air
  • T'way Air
  • Jin Air
  • Eastar Jet
  • Air Seoul
  • Air Busan
• Full-Service Carriers (FSCs):
• • Korean Air
  • Asiana Airlines

LCCs generally offer the most competitive fares, especially when booked in advance, though full-service carriers can also have attractive promotions.

🗓️ When to Find the Cheapest Fares for Seoul to Jeju

The price of your flight from Seoul to Jeju can vary significantly based on several factors:

• Seasonality:
• • Off-Peak (Cheapest): Late autumn (November), winter (January-February, excluding Lunar New Year), and early spring (March-April, excluding cherry blossom peak) often see lower prices.
  • Peak (Most Expensive): Summer (July-August), major public holidays like Chuseok (Korean Thanksgiving), Lunar New Year, and long weekends typically have the highest fares due to high demand.
• Booking Lead Time: Booking your flight several weeks to months in advance generally yields better prices, especially for LCCs. Last-minute bookings are usually more expensive.
• Day of the Week and Time of Day:
• • Flights on weekdays (Tuesday, Wednesday, Thursday) are often cheaper than those on weekends (Friday, Saturday, Sunday).
  • Early morning or late-night flights can sometimes be more affordable than mid-day options.

💡 Tips for Securing the Best Deals on Trip.com

To help you find the most budget-friendly flights from Seoul (Gimpo) to Jeju, consider these tips when searching on Trip.com:

1. Be Flexible with Your Dates: If your travel dates are flexible, use Trip.com's flexible date search options. This allows you to see prices across an entire month, helping you pinpoint the cheapest days to fly.
2. Set Price Alerts: Trip.com allows you to set up price alerts for your desired route. You'll be notified if the fare drops, enabling you to book at the optimal time.
3. Consider Departure Airports: While Gimpo (GMP) is the primary domestic airport, always confirm it's your preferred departure point for Jeju flights as it offers the most options and competitive pricing.
4. Look for Promotions: Keep an eye out for special promotions or sales from airlines, particularly the LCCs. These can offer significant savings.
5. Book in Advance: As mentioned, booking early is one of the most reliable ways to secure lower fares, especially for popular routes like Seoul-Jeju.

💲 Cheapest Flight Examples from Seoul (Gimpo) to Jeju City

Based on typical trends and LCC offerings, here are examples of what you might find for the cheapest flights from Gimpo (GMP) to Jeju (CJU) on Trip.com:

• One-Way Fare (Off-Peak, Booked in Advance):
• • Airline Examples: Jeju Air, T'way Air, Jin Air, Eastar Jet, Air Seoul, Air Busan
  • Typical Price Range: From ₩25,000 to ₩40,000 (approximately $18 to $30 USD)
  • Departure Airport: Gimpo (GMP)
  • Booking Recommendation: Look for flights on Tuesdays, Wednesdays, or Thursdays during non-holiday periods.

For instance, you might find a one-way ticket with Jeju Air from Gimpo (GMP) to Jeju (CJU) for around ₩28,000 (approximately $20 USD) if booked a month or two in advance for a mid-week travel date in an off-peak season. Prices for full-service carriers like Korean Air or Asiana Airlines typically start higher, often from ₩50,000 (approximately $38 USD) upwards, but they may include checked baggage or other amenities.

Remember, the key to finding the absolute cheapest flight is to compare options on Trip.com across various airlines and dates, keeping flexibility in mind.

Prices in this article are referenced from Trip.com. Data was updated on April 16, 2026; please refer to real-time search for specific details.