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$20 Cheap Flights to Sejong

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Popular airlines to Sejong

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How much is the cheapest flight to Sejong?

Prices were available within the past 7 days and start at $20 for one-way flights and $40 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Trinity Airways with baggage
Aero K Airlines
Spring Airlines
Korean Air
Asiana Airlines

What you need to know for your flight to Sejong

Flights to Sejong at a glance

Traveling to Sejong is straightforward—just select from various full-service or low-cost airlines. Compare travel times and find the best option that fits your budget and schedule, allowing you to explore the city's renowned sights and vibrant neighborhoods. Look for affordable Sejong flights or even the cheapest flight to Sejong to get started.

  • Major airports near Sejong: Incheon International Airport (ICN), Cheongju International Airport (CJJ)
  • Closest airport to Sejong: Cheongju International Airport, CJJ (around 20 miles)
  • Flights per week: 1,900+ flights arriving across Sejong airports
  • Number of airlines that fly to Sejong: around 65+ carriers

Popular airports near Sejong

Sejong is a vibrant city perfect for outdoor adventures and family vacations. Visitors are drawn to its rich culture and array of activities. This destination is conveniently accessible via two major airports, making it easy for travelers searching for airports near Sejong to find suitable flight options.

  • Incheon International Airport (ICN): Situated approximately 82 miles from Sejong, this airport facilitates international travel to over 220 destinations globally. Passengers can opt for upgrades to business class, premium economy, or first-class seating for enhanced comfort, depending on their chosen routes and airlines. Key carriers include Korean Air, Asiana Airlines, and Air Premia.
  • Cheongju International Airport (CJJ): Found in North Chungcheong, roughly 20 miles from Sejong, this airport provides international flights to around 2 destinations across the globe. The prominent airline operating here is Aero K.

Top routes to Sejong

  • Los Angeles (LAX) to Sejong (ICN), with one-way flight options from around $430
  • San Francisco (SFO) to Sejong (ICN), with one-way airfare from around $330
  • Tokyo (HND/NRT) to Sejong (ICN/CJJ), with one-way tickets available from around $65
  • Seattle (SEA) to Sejong (ICN), with one-way airfare from around $420
  • Osaka (KIX) to Sejong (ICN/CJJ), with one-way tickets available from around $65

Cheapest routes to Sejong

  • Osaka (KIX) to Sejong (ICN/CJJ), with cheap one-way fares from around $65
  • Tokyo (HND/NRT) to Sejong (ICN/CJJ), with budget one-way fares from around $65
  • Kaohsiung (KHH) to Sejong (ICN), with low-cost one-way tickets from around $75
  • Weihai (WEH) to Sejong (ICN), with low-cost one-way tickets from around $75
  • Yantai (YNT) to Sejong (ICN), with budget one-way fares from around $80

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Sejong

  • Korean Air: Operating flights to Incheon International Airport (ICN), Korean Air accounts for about 20% of arrivals to Sejong. The typical one-way fare is around $650, and the premium service may include business class based on the specific route.
  • Asiana Airlines: Serving Incheon International Airport (ICN), Asiana Airlines represents approximately 18% of arrivals in Sejong. The average cost for a one-way ticket is about $580, with potential business class options available depending on the flight.
  • Delta: Offering routes to Incheon International Airport (ICN), Delta makes up roughly 13% of arrivals to Sejong. One-way fares generally average around $760, and premium cabin selections might include premium economy and business class, based on the route.
  • United: United operates flights to Incheon International Airport (ICN) and accounts for nearly 6% of arrivals to Sejong. Travelers can expect an average one-way fare of about $670, with premium service options that may include premium economy and business class depending on the specific route.
  • Air Premia: Flying to Incheon International Airport (ICN), Air Premia comprises around 5% of arrivals to Sejong. The average fare for a one-way flight is approximately $430, with premium economy service available depending on the route.

Best time to fly to Sejong

The most popular months for travelers to fly to Sejong are March, April, and June, when peak temperatures in Sejong can reach up to 71.4°F in June. If you prefer quieter travel, consider August, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 77.2°F. For better deals, January usually offers the lowest average one-way fare around $540, roughly 10% cheaper than the yearly average. Looking for additional cheaper months to fly? July, August, and November offer average one-way fares of around $552, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January29.5°F (-1.4°C)No Rain (Dry)Mostly SunnyAverage$540
February34.0°F (1.1°C)No Rain (Dry)Mostly SunnyAverage$572
March43.2°F (6.2°C)Light RainMostly SunnyHigh$604
April53.2°F (11.8°C)Light RainMostly SunnyHigh$576
May63.5°F (17.5°C)Light RainMostly SunnyAverage$690
June71.4°F (21.9°C)Light RainMostly SunnyHigh$685
July76.3°F (24.6°C)Frequent RainMostly CloudyAverage$549
August77.2°F (25.1°C)Moderate RainMostly SunnyLow$553
September69.3°F (20.7°C)Light RainMostly SunnyAverage$577
October58.3°F (14.6°C)Light RainMostly SunnyAverage$608
November46.4°F (8.0°C)Light RainMostly SunnyLow$555
December32.7°F (0.4°C)No Rain (Dry)Mostly SunnyLow$743

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Sejong

Getting some of the best deals on flights to Sejong is all about timing and flexibility. Here are some key tips to help you save:

  1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
  3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Sejong hotel and flight deals.
  4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
  5. Earn miles—you can earn airline miles when you book your Sejong flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Sejong

Sejong welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Sejong efficiently:

  • Public transportation: From Incheon International Airport, Incheon Int'l Airport Terminal 2 Station, a metro station, is located about 0.1 miles from the airport and accessible by walking, while Yongyu Station, a train station, is situated about 3.6 miles from the airport and can be reached by car.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Sejong, with private rides that can be arranged in advance.
  • Car rental: Renting a car in Sejong is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Sejong on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay in and around Sejong

  • Daejeon: Daejeon is a vibrant metropolis located 10 miles drive away from Sejong, making it an ideal day trip for travelers seeking a mix of urban and outdoor experiences. Families will find plenty to do, from shopping in bustling areas to unwinding at local spas. Notable attractions include the Cheongnamdae Presidential Memorial Hall for a glimpse into Korean history, Yuseong Hot Springs for relaxation, and Expo Park, which offers a beautiful urban space perfect for outdoor adventures. Daejeon provides an exciting city experience paired with cultural and recreational opportunities.
  • Chumi: Chumi is a quaint village situated 11 miles away from Sejong, well-suited for travelers looking for a blend of city life and cultural exploration. Visitors can immerse themselves in the local atmosphere by exploring vibrant markets and shopping areas. Points of interest include the historic Gongsanseong Fortress, which offers a captivating look at the past, and Gyeryongsan National Park, a fantastic spot for nature lovers and adventure seekers. The Gongju National Museum also provides insightful exhibits for those interested in history and culture.
  • Jochiwon-eup: Jochiwon-eup is located around the area of Sejong and offers a delightful mix of outdoor and family-friendly activities. This neighborhood features parks and urban spaces ideal for leisurely strolls or picnics. Key attractions include Sangnok Resort, a theme park perfect for family fun, and the Independence Hall of Korea, where visitors can learn about the nation’s history. For those seeking tranquility, Ochang Lake Park provides a scenic getaway, ideal for romantic walks or relaxation amidst nature’s beauty.

Tips for short-haul flights to Sejong

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

  • Pack light and skip checked bags—when flying with budget airlines, it’s often more economical to travel with just a carry-on. Maximize your packing efficiency by using mini toiletries, wearing your heaviest clothing, and coordinating outfits. This approach also helps you avoid the wait at baggage claim upon arrival.
  • Bring your own entertainment—short-haul flights frequently do not provide in-flight entertainment. To keep yourself engaged, download TV shows, movies, music, or podcasts ahead of time, and consider bringing a book. And remember to fully charge your devices before you board.
  • Arrive at the airport in plenty of time—for short or domestic flights, it’s advisable to arrive at least 1.5 to 2 hours prior to departure, taking into account traffic and security lines.
  • Bring your own snacks and water—pack snacks and a reusable water bottle to stay hydrated and save money at the airport.

Tips for long-haul flights to Sejong

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

  • Select your seat in advance—for longer flights, choosing your seat is essential for comfort. Full-service airlines often allow free seat selection once online check-in opens, typically 24–48 hours before your flight. Some airlines may permit seat selection even earlier.
  • Arrive at the airport in plenty of time—make sure to arrive at least 3 hours before departure for international flights to accommodate check-in, security, and immigration procedures.
  • Relax at the airport—if you have some extra time, take the opportunity to explore the shops, enjoy a coffee, or unwind at your gate or in a departure lounge if you have access. Most airports offer free and accessible Wi-Fi.
  • Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time of your arrival to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Sejong?
The cheapest month to fly to Sejong is August when there's less demand. Off-peak months are usually when you'll find cheap fares. To save money, avoid flying during public holidays and school breaks.
Which US cities fly direct to Sejong?
Direct flights take the hassle out of travel. When browsing on Expedia, select "Direct flights only" and we'll show you the nonstop options to fly to Sejong.
How to find a cheap flight to Sejong?
Book early to maximize your chances of getting cheap flights to Sejong. Also, consider traveling during off-peak months like February and April. If you leave on a Thursday, you can save 16% on average compared to departing on a Sunday.* Save time checking every day and set up a price alert on the Expedia app. We'll send you a notification when fares drop.*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 Sejong?
You can find cheap deals on last-minute departures to Sejong, especially if your travel arrangements are flexible. Consider your options for departing from a different airport, tweaking your trip dates or picking an alternative carrier to get a cheap flight to Sejong.
How far in advance should I book a flight to Sejong?
Get the travel dates you want and a price that's easy on your pocket by booking your domestic flight to Sejong up to 28 days in advance. Search for tickets between two and four months ahead if you're visiting Sejong 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 Sejong?
You can generally get cheap flights to Sejong on Sundays. You can save around 8% on average compared to those who book on a Friday, which is often the most expensive day to book.**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 Sejong?
There are 8 carriers connecting Sejong with 11 airports all over the world. The key point of arrival to this city is Cheongju Intl. Airport (CJJ). Book a ticket with any of these top airlines to Sejong:
  • TWay Air
  • Jin Air
  • Jeju Air
  • EASTAR JET
Where do you fly into Sejong?
If you're flying to Sejong, the main hub to touch down at is Cheongju Intl. Airport (CJJ). Another option is to fly to Sejong via Jeonju (CHN).
How far is the airport from central Sejong?
If you're landing at Cheongju Intl. Airport (CJJ), you'll be about 20 mi northeast of central Sejong.
Can I save money by booking a Sejong trip package?
Bundle your flight and hotel and you could save hundreds of dollars. Plus, you can add extras like car rentals and tours to your Sejong flight and hotel package deal. With Expedia, it's simple to look after all your Sejong travel arrangements in the same place.
Can I change or cancel my flight to Sejong?
If you reserved your flight to Sejong in the last 24 hours, you can usually cancel or change it without fees. After that, additional costs may apply depending on the airline's terms and conditions. To learn more, check out our Customer Service Portal. Remember that some flights are non-refundable, so you may receive a credit toward a future flight in place of a direct refund. When searching on Expedia, use the "Changes included" or "No cancel fee" filters to compare fares with flexible change policies.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Sejong

The cheapest day to fly

Get started finding a cheap flight to Sejong 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

August is the cheapest month to fly to Sejong. 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 Sejong. 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 Sejong, 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 Sejong

The lowest price for round-trip flights to Sejong in 2026 starts from from $40, while one-way tickets start from from $20. 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 Sejong. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Sejong

Trinity Airways with baggage, Aero K Airlines, Spring Airlines, Korean Air, Asiana Airlines are just some of the airlines that can typically offer cheap tickets to Sejong. 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 Sejong and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Sejong, 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 Sejong. 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 Sejong 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 Sejong

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 Sejong.

Stopover savings

The cheapest tickets to Sejong are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Sejong. 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 Sejong 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 Sejong. Simply download the free Expedia app to your smart device and activate Sejong 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 Sejong. 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.

Tips to find the cheapest flights to Sejong

Travel information

Destination airport
Cheongju Intl.
Destination airport IATA code
CJJ
Destination city name
Cheongju
Roundtrip price
$40

Trending flights to Sejong

Prices were available within the past 7 days and start at $20 for one-way flights and $40 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines

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