Flitura

International route

Flights from Seattle (SEA) to Seoul (ICN)

From $749 rt

Planning a trip from Seattle to ICN? Flitura searches published and consolidator fares from SEA to ICN in one place. Recent searches found fares from $749 rt. Typical international flight time is 14h – 20h (1+ stops common). Use flexible dates to spot lower fares on nearby days.

Sample fares found recently — search above for live prices on your dates.

Search live SEA → ICN fares
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Typical flight time

14h – 20h (1+ stops common)

Best time to book

6–10 weeks before departure

Often cheapest days

Tuesday, Wednesday, and Saturday

Best months to fly

Research ICN weather and local holidays — avoiding peak tourist weeks often saves on airfare.

Flying from Seattle (SEA) to ICN (ICN)

Seoul Incheon (ICN) is a top-rated airport for US–Asia connections, with frequent service from Seattle and West Coast hubs.

Major holidays and summer weekends usually mean higher fares — midweek often saves more.

Alternative airports

If Seattle (SEA) or ICN (ICN) has multiple airports in the metro, check nearby options in your search for better fares.

Entry requirements

Passport, visa, transit, and entry requirements for travel from United States to South Korea depend on citizenship and can change. Verify current requirements with official government sources and the operating airline before booking.

Airlines on SEA–ICN

  • Major full-service and low-cost carriers — review live results above

Tips for cheaper Seattle to ICN flights

  • •Book 6–10 weeks ahead for the best balance of price and seat choice on SEA–ICN.
  • •Research ICN weather and local holidays — avoiding peak tourist weeks often saves on airfare.
  • •Tuesday and Wednesday departures are often cheaper than Friday or Sunday peaks.
  • •If Seattle (SEA) or ICN (ICN) has multiple airports in the metro, check nearby options in your search for better fares.
  • •Set fare alerts and save your search — incomplete bookings can be resumed on Flitura.
  • •Passport, visa, transit, and entry requirements for travel from United States to South Korea depend on citizenship and can change. Verify current requirements with official government sources and the operating airline before booking.

Frequently asked questions

How long is the flight from Seattle to ICN?

Most itineraries from SEA to ICN take 14h – 20h (1+ stops common). Exact duration depends on nonstop vs connecting flights and wind conditions.

When is the cheapest time to fly from SEA to ICN?

Midweek travel and booking a few weeks in advance usually beat last-minute prices. Major holidays and summer weekends usually mean higher fares — midweek often saves more. Shoulder seasons (spring and fall) often offer savings.

Which airlines fly from Seattle to ICN?

Potential options for this market may include Major full-service and low-cost carriers — review live results above, but schedules change and not every airline operates every date. Search live results above to confirm the operating carrier and any codeshare.

Are taxes and fees included in the displayed fare?

Mandatory taxes are included where shown at checkout. Optional extras such as seats, bags, and travel protection are itemized before you pay.

Can I book one-way flights from SEA to ICN?

Yes — switch to One-way in the search box above or check round-trip bundles to see which saves more for your dates.

What is the cheapest fare from SEA to ICN?

Recent searches on Flitura found round-trip fares from $749 on this route. Live prices change daily — search above with flexible dates for the latest deals.

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