Culture · Food · Long haul. Compare cheap flights to Seoul from US airports — flight time 13h from Los Angeles International.
Compare flights to Seoul →Seoul is a long-haul destination from the US — around 13h in the air from Los Angeles International (LAX), which makes it a realistic one- or two-week trip. Travelers come for the culture and the food. Round-trip fares from around $649 are typical when booked ahead from Los Angeles International.
Most travelers aim for Apr–Jun, Sep–Oct. Typical advance round-trips sit around $649. On the ground, South Korean won (KRW) is the local currency and Korean the dominant language — English coverage is solid in tourist quarters and at the airport. Visa: K-ETA required for US passport holders — apply online before travel, KRW 10,000. 8-14 weeks ahead is the long-haul sweet spot — earlier doesn't reliably help, later starts to hurt; last-minute bookings can run two to three times the advance fare.
By Louisa Lowe, Lead Writer · Updated for 2026.
Direct answer. Round-trip fares to Seoul typically start around $649 when booked ahead — it's a long-haul route, roughly 13h in the air from Los Angeles International.
8-14 weeks ahead is the long-haul sweet spot — earlier doesn't reliably help, later starts to hurt. Last-minute bookings are where this route punishes you — waiting until inside two weeks of departure usually costs well over the advance fare.
Key fact: A typical advance round-trip to Seoul is around $649; flight time from Los Angeles International is about 13h.
Direct answer. Book 8-14 weeks ahead, and aim for Apr–Jun, Sep–Oct if you want Seoul at its best — that window balances weather and crowds rather than chasing a mythical cheapest day.
Before you commit, the admin: K-ETA required for US passport holders — apply online before travel, KRW 10,000. Currency is South Korean won (KRW); Korean is the main language, with English widely understood in tourist areas.
Key fact: Best months to visit Seoul: Apr–Jun, Sep–Oct. Flight time from Los Angeles International: about 13h.
Always confirm visa and entry requirements at travel.state.gov before booking.
From Los Angeles International (LAX), nonstop flights to Seoul take approximately 13h. Total journey time depends on your departure airport, any connections, and seasonal headwinds.
K-ETA required for US passport holders — apply online before travel, KRW 10,000. Always check travel.state.gov for the latest entry requirements before booking.
The best months to visit Seoul are Apr–Jun, Sep–Oct, when conditions are most comfortable for sightseeing and weather is settled.
South Korean won (KRW) — most major hotels and restaurants in Seoul accept card payments, but cash is useful for smaller establishments and tipping.
Korean. English is widely understood in tourist areas, hotels, and major restaurants.
