South Korea's capital has become one of the most sought-after destinations in Asia — and with good reason. World-class food, ancient palaces, K-culture tourism, and a buzzing nightlife scene all converge in one city. The good news: cheap flights to Seoul from the US are genuinely available, especially from West Coast cities with strong nonstop service. Call +1 (855) 302-0422 (24/7) and we'll find you a fare that works for your schedule and budget.
Airports serving Seoul
Seoul has two airports — knowing the difference matters:
- Incheon International Airport (ICN) — One of the world's busiest and most awarded airports, located about 50 km west of central Seoul on Yeongjong Island. Virtually all long-haul international flights from the US arrive here. The AREX express train connects ICN to Seoul Station in about 43 minutes. ICN is famously easy to navigate, with excellent transit facilities, transit hotels, and a free layover tour program for long connections.
- Gimpo Airport (GMP) — Seoul's domestic airport and a hub for short-haul flights within South Korea and to select regional destinations (Tokyo, Osaka, Shanghai, Beijing). US travelers arriving from abroad will almost always use ICN, not GMP.
All flights when searching for tickets to Seoul from the US should be booked into ICN.
US cities with nonstop flights to Seoul (ICN)
Seoul has excellent nonstop coverage from the US, particularly the West Coast and major hubs:
| US Departure City | Nonstop Flight Time | Airlines |
|---|---|---|
| Los Angeles (LAX) | ~12–13 hrs | Korean Air, Asiana, Delta, United |
| Seattle (SEA) | ~11–12 hrs | Korean Air, Asiana, Alaska (codeshare) |
| San Francisco (SFO) | ~12 hrs | United, Korean Air, Asiana |
| New York (JFK) | ~14–15 hrs | Korean Air, Asiana, Delta |
| Chicago (ORD) | ~13–14 hrs | Korean Air, United |
| Dallas (DFW) | ~15 hrs | Korean Air, American (codeshare) |
The Los Angeles to Seoul and Seattle to Seoul routes are among the most heavily served transpacific corridors, which means more competition and often lower fares. Korean Air and Asiana (now part of the Korean Air merger process) together dominate this market alongside US carriers.
Best months to fly to Seoul cheaply
Seoul has four distinct seasons, each affecting travel demand differently:
- Low season (best fares): January through February (excluding Korean New Year, Seollal) and late June through July. Midwinter and early monsoon season are the quietest periods. West Coast round-trip fares often hover around $620–$800.
- Shoulder season: Late March (after cherry blossom rush), September–October (beautiful autumn foliage, manageable crowds). Fares typically in the $750–$950 range.
- Peak season (highest fares): Late March through early April (cherry blossoms), late April through early May (Children's Day, Buddha's Birthday holidays), and mid-December through New Year. Prices regularly exceed $1,000–$1,300 from the West Coast.
Autumn — particularly October — is arguably Seoul's best travel season: vivid foliage, cultural festivals, and moderate temperatures. Fares in early-to-mid October can be surprisingly reasonable. Book our guide to the cheapest time to book a flight for a full breakdown of booking lead times.
Illustrative round-trip fare ranges
| Departure City | Low Season (Economy) | Peak Season (Economy) | Business Class |
|---|---|---|---|
| Los Angeles (LAX) | from around $620 | from around $980 | from around $2,500 |
| Seattle (SEA) | from around $600 | from around $960 | from around $2,400 |
| San Francisco (SFO) | from around $640 | from around $990 | from around $2,550 |
| New York (JFK) | from around $780 | from around $1,100 | from around $3,100 |
These are illustrative estimates only. Actual fares vary by exact dates, airline, cabin, and availability. Call +1 (855) 302-0422 (24/7) for current pricing on your specific travel window.
Nonstop vs. connecting flights
From West Coast cities, nonstop flights to Seoul are typically the best value because abundant nonstop capacity keeps fares competitive. The flight is around 11–13 hours — manageable but long enough that an aisle seat and a neck pillow matter.
From East Coast or Midwest cities, connecting options (typically via a West Coast hub or Tokyo) can sometimes undercut nonstop pricing by $100–$200. If you're on a budget and don't mind a longer total journey, compare both. We'll run the numbers for you in one call.
Tips for finding cheap flights to Seoul
- Book 3–4 months ahead for peak season. Cherry blossom season sells out notably fast — Koreans and Japanese travelers book those dates months in advance alongside international tourists.
- Target Korean holiday inversions. Dates just after Chuseok (Korean Thanksgiving) or Seollal (Lunar New Year) often see fare drops as peak holiday demand ends abruptly.
- Consider Asiana or Korean Air directly. The two home carriers often match or beat codeshare pricing on US-Seoul routes and provide excellent service and generous baggage allowances.
- Mid-week travel saves money. Tuesdays and Wednesdays are typically the least expensive departure days on transpacific routes.
- Compare ICN as a connecting point for other Asia trips. If Seoul is one stop on a wider Asia itinerary, building your trip around ICN as a hub can sometimes be more economical than booking separate tickets.
Understanding change and cancellation rules
International economy fares to Seoul can range from fully flexible to highly restricted depending on the fare class. Before you book, understand what happens if your dates change or you need to cancel. Our guide on how to avoid flight change and cancellation fees explains exactly what to watch for when comparing fares, especially on long-haul international tickets where the dollar stakes are higher.
Book your Seoul flight today
Whether you're heading to Seoul for the street food markets of Gwangjang, the palaces of Gyeongbokgung, or a K-pop experience, getting there at the right price starts with a conversation. Call +1 (855) 302-0422 (24/7) — our agents compare real-time fares across multiple airlines and routings and book it all in one call. No online checkout, no guessing — just a great fare and a confirmed itinerary.