Route Briefing: Seattle to Seoul
Seattle to Seoul is one of the Pacific Northwest's most rewarding long-haul routes, and at just 10 hours and 30 minutes nonstop, it's genuinely one of the more manageable transpacific crossings you'll find. Korean Air and Asiana Airlines both fly this route and have long-standing reputations for attentive service and solid in-flight meals — a meaningful perk when you're crossing an ocean. Delta rounds out your options if you prefer to stay within a familiar frequent flyer ecosystem.
Seoul itself is one of those cities that earns every superlative thrown at it. It's a place where a 600-year-old royal palace sits in the shadow of glass skyscrapers, where Buddhist temples share neighborhoods with K-pop flagship stores, and where the street food alone could justify the flight. Wander through Insadong for traditional crafts and tea houses, lose yourself in the alleyways of Bukchon Hanok Village, or head south of the Han River to Gangnam, where the neon and energy feel like the city turned up to full volume. The food scene runs the full spectrum — from sizzling Korean barbecue and spicy tteokbokki at pojangmacha street stalls to world-class fine dining. Budget travelers and splurgers alike find Seoul surprisingly accommodating.
Getting from Incheon International Airport into the city is straightforward. The Airport Railroad Express, known as AREX, connects the airport directly to central Seoul, including Seoul Station, making it one of the easiest airport-to-city transfers in Asia. The journey takes roughly an hour on the all-stop service and is very affordable.
Timing your trip wisely makes a real difference here. July and August bring summer heat and humidity alongside peak crowds and prices, and Lunar New Year in late January sees fares spike sharply as millions of Koreans travel home. Spring — particularly April and May — rewards visitors with mild weather and cherry blossoms, while autumn brings stunning foliage and comfortable temperatures. Both shoulder seasons are genuinely excellent times to visit.
On the fare front, a roundtrip under $650 is the benchmark for a genuinely good deal on this route, with standard pricing typically running $900 to $1,200 or more. Book two to four months out, fly midweek, and steer clear of major Korean public holidays like Chuseok and Lunar New Year — doing so can shave 20 to 30 percent off your ticket. Set a fare alert on FlightKitten and let the deals come to you.