$309 Cheap Flights to South Korea
One-way
Departing from
United States
Going to
South Korea
Seoul (ICN)
South Korea • September, 2026
95% AI deal score
$1,035 $351
Busan (PUS)
South Korea • April, 2026
85% AI deal score
$1,175 $309
Jeju City (CJU)
South Korea • September, 2026
73% AI deal score
$1,100 $445
Top Cheap Flight Deals from United States to South Korea
Recent round-trip flight deals to South Korea
Tue, Sep 1 - Tue, Sep 8
Cheapest
Hagåtña (GUM) - Seoul (ICN)
Jin Air airlines • Direct
Seoul (ICN) - Hagåtña (GUM)
Jin Air airlines • Direct
$343
$188
-$155
45%
Tue, Jun 30 - Wed, Jul 1
Hagåtña (GUM) - Seoul (ICN)
Jin Air airlines • Direct
Seoul (ICN) - Hagåtña (GUM)
Jin Air airlines • Direct
$200
Mon, Jun 15 - Tue, Jun 16
Hagåtña (GUM) - Seoul (ICN)
Jin Air airlines • Direct
Seoul (ICN) - Hagåtña (GUM)
Jin Air airlines • Direct
$199
Mon, Jun 15 - Mon, Jun 22
Hagåtña (GUM) - Seoul (ICN)
Jin Air airlines • Direct
Seoul (ICN) - Hagåtña (GUM)
Jin Air airlines • Direct
$200
Mon, Aug 31 - Mon, Sep 7
Hagåtña (GUM) - Seoul (ICN)
Jin Air airlines • Direct
Seoul (ICN) - Hagåtña (GUM)
Jin Air airlines • Direct
$201
Thu, May 21 - Tue, Jun 16
Saipan (SPN) - Seoul (ICN)
Jeju Air airlines • Direct
Seoul (ICN) - Saipan (SPN)
Jeju Air airlines • Direct
$238
$214
-$24
10%
The cheapest time to fly to South Korea
Ready to jet to South Korea on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Facts About Flights from United States to South Korea
To help you plan your journey, here are some quick South Korea flight facts and tips.
South Korea airports
South Korea boasts a modern and efficient network of airports connecting the nation to the world. Among the most prominent are Incheon International Airport (ICN), a global hub known for its state-of-the-art facilities and numerous international connections. Jeju International Airport (CJU) serves the popular tourist destination of Jeju Island, offering both domestic and international flights. Gimhae International Airport (PUS) is a key gateway to the southeastern region of the country, particularly the bustling city of Busan, providing a mix of domestic and international routes. Finally, Gimpo International Airport (GMP), while now primarily focused on domestic flights and some regional international routes, still plays a vital role in connecting Seoul to other parts of Korea. These airports collectively ensure convenient access to South Korea's diverse regions and attractions.
Incheon International (ICN)
Seoul, South Korea
Jeju International (CJU)
Jeju City, South Korea
Gimhae International (PUS)
Busan, South Korea
Gimpo International (GMP)
Seoul, South Korea
Pro tip: search “South Korea (Any)” to see fares to all South Korea airports – sometimes one is cheaper than the others on your dates.
Insights for flights to South Korea
Cheapest airport
Cheongju (CJJ)
Looking for a steal to South Korea? Cheongju International Airport (CJJ) might just be your golden ticket! It's compact and easy to navigate, offering a gateway to the heart of the country without the Seoul-sized price tag. Plus, it is near many of Korea's top attractions.
Nonstop vs. 1-stop
20+ cities
Gimpo International Airport in Seoul is a secondary hub that offers a range of routes, with popular connections to cities within South Korea like Busan and Jeju.
ICN Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
ICN airport insights
Best days to catch a deal
Fri, Tue
Based on the data, Thursday and Wednesday are the days when the cheapest deals are most frequently found for Incheon International Airport. You are more likely to find a deal on these days compared to others.
Avg. deal survival time
10.3 hours
Deals from Incheon International Airport typically last for approximately 10.3 hours. This relatively short lifespan emphasizes the importance of booking quickly when you find a good offer.
Rare deal frequency
12 deals
In the past month, we've identified 12 rare deals for flights from Incheon International Airport. These rare deals, scoring 90+ on our AI Deal Score, typically include mistake fares, special promotions, or ultra-discounts.
Average price drop
-66%
The average price drop for flights to Incheon International Airport is 66.5%, indicating a significant potential for savings. This substantial decrease suggests that travelers can often find much cheaper flights to this destination compared to the initial listed prices.
Next 4 weeks: deal forecast
Incheon International Airport (ICN) Next Month Forecast
Based on current trends, flight prices to Incheon International Airport are expected to remain stable next month. There are no significant price drops or increases anticipated at this time.
Top 5 biggest price drops (last 3 months)
Found on March 27
Melbourne - ICN
$2,035 → $226
89%
Found on March 30
Takamatsu - ICN
$950 → $107
89%
Found on March 28
Chittagong - ICN
$2,425 → $359
85%
Found on March 27
Santiago de Querétaro - ICN
$4,700 → $774
84%
Found on March 28
Minneapolis - ICN
$1,975 → $369
81%
Check these nearby airports too
Looking for more options? These airports near ICN sometimes drop rare deals too:
Cheongju International (CJJ)
~7 rare deals/month
Haneda (HND)
~13 rare deals/month
Tianjin Binhai International (TSN)
~13 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially CJJ and HND for long-haul deal surprises.
When Is the Best Time to Fly from United States to South Korea
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to South Korea:
Cheapest month
January
Cheapest month
January is typically the cheapest month to fly to Seoul. While it's the coldest month, the city transforms into a winter wonderland, with fewer crowds at popular attractions. Plus, you'll find great deals on flights and accommodations, making it a budget-friendly time to explore the city's rich culture and delicious cuisine.
Best day to book
Tuesday
Best day to book
Tuesday is often the sweet spot for booking flights to Seoul. Airlines tend to release new deals early in the week to stir demand. Keep an eye out for flash sales and limited-time offers that could save you big bucks on your trip to the Land of the Morning Calm.
Cheapest days to fly
Wednesday
Cheapest days to fly
Flying on a Wednesday can save you a pretty penny on your trip to Seoul. Mid-week flights are generally less crowded and cheaper than weekend flights. You will have more wiggle room to enjoy all the sights and sounds of this dynamic city without breaking the bank.
Advance booking sweet spot
2 months
Advance booking sweet spot
Booking about two months in advance hits that sweet spot for flights to Seoul. This timeframe gives you the best chance of snagging lower fares before they start to climb closer to your travel date. Keep an eye on prices and be ready to pounce when you see a deal you like!
South Korea Airports & Ground Transportation
One big question for travelers is which South Korea airport to fly into. Here’s a quick guide to South Korea’s airports and how to get to the city from each:
Incheon International Airport (ICN)
Hey there, jet-setter! Incheon International Airport, also known as Seoul–Incheon International Airport, is the largest airport in South Korea and one of the busiest in the world! This airport is the main hub for Korean Air, Asiana Airlines, and Jeju Air. You can enjoy a wide array of amenities such as spas, ice skating rinks, movie theaters, and even gardens! Getting to Seoul from ICN is a breeze thanks to the Airport Railroad (AREX) and numerous bus lines. Be sure to explore all the cultural experiences Incheon Airport has to offer; you won't be disappointed!
Tip: Don't forget to check out the cultural performances while you're waiting for your flight!
Gimpo International Airport (GMP)
Hello, traveler! Gimpo International Airport was once the primary airport for Seoul, but now it mainly handles domestic flights and limited international routes. Gimpo Airport is conveniently located closer to Seoul than Incheon, making it a popular choice for domestic travel. You'll find plenty of shops, restaurants, and lounges to relax in before your flight. Getting to and from Gimpo is super easy, with multiple subway lines and bus routes connecting it to various parts of Seoul. Prepare for a smooth and efficient travel experience!
What to Do in South Korea
South Korea isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in South Korea, organized by interest:
Sightseeing & landmarks
Seoul is brimming with iconic landmarks! Visit the majestic Gyeongbokgung Palace, wander through the historic Bukchon Hanok Village, and ascend the N Seoul Tower for panoramic city views. Each spot offers a unique glimpse into Korea's rich heritage and modern charm.
Arts & culture
Immerse yourself in Seoul's vibrant arts scene by exploring the numerous museums and galleries. The National Museum of Korea and Leeum, Samsung Museum of Art are treasure troves of history and contemporary art. Don't miss traditional performances and street art in the Hongdae area for a modern twist!
Food & nightlife
Get ready for a culinary adventure in Seoul! From sizzling Korean BBQ and spicy street food in Myeongdong to trendy cafes in Gangnam, there's something for every palate. As night falls, explore the lively bars and clubs in Itaewon or enjoy a serene evening along the Han River.
Shopping & fashion
Shopaholics, rejoice! Seoul is a fashion paradise with bustling markets and upscale boutiques. Dive into the trendy clothes and cosmetics in Myeongdong, explore the unique styles in Hongdae, or splurge on luxury brands in Gangnam. Get ready to revamp your wardrobe!
Nearby getaways
Escape the city bustle with a short trip to some nearby gems. Explore the serene beauty of the Garden of Morning Calm, hike in the picturesque Bukhansan National Park, or visit the historic city of Suwon with its impressive fortress. A quick getaway can offer a refreshing change of scenery!
Events in South Korea This Month
ateez with line friends pop-up: mighteez wonder room
Visit the "WELCOME TO MIGHTEEZ Wonder Room!" pop-up store, presented by IPX and ATEEZ, at K-POP SQUARE Hongdae (March 18–29, 2026) or Shinsegae Department Store Busan Centum City (March 23–April 2, 2026) and experience the world of MIGHTEEZ.
Frequently Asked Questions About Flights to South Korea
Pro Tips for Finding Cheap Flights to South Korea
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on South Korea flights:
Be Flexible with Your Dates: Flying mid-week or during the shoulder season (spring/fall) can save you a bundle. Avoid peak holiday times when everyone else is trying to go!
Consider Alternative Airports: Sometimes flying into a smaller airport near Seoul can be significantly cheaper than landing directly at Incheon. Just make sure you factor in the cost and time to get to your final destination!
