cached prices · United States fares · USD

Flights from Seattle (SEA) to Seoul (GMP)

The cheapest one-way fare from Seattle to Seoul we have seen is $545 USD, departing Oct 1 (found Sep 25): United UA 2478, 2 stops, 34h00m.

See more dates →

Prices are the cached fare only; baggage and fare rules are shown by the seller.

about this route

Seattle to Seoul in numbers

By month, Oct 2026 is the cheapest we hold at $545 USD and Feb 2027 the most expensive at $599 USD — a spread of 10%.

No nonstop fare is held for the 2 departure dates seen — every row has at least one stop; carriers seen: Alaska Airlines, China Airlines, United.

SEA serves Seattle, United States; GMP serves Seoul, South Korea.

Seoul runs 16 hours ahead of Seattle.

by month

Cheapest by month

  • Oct 2026

    $545 USD

    checked Sep 26

  • Feb 2027

    $599 USD

    checked Sep 26

by date

Cheapest one-way by date

2 rows held, cheapest first — the cheapest nonstop and the cheapest with stops seen for each departure date.

  • Oct 1 · 15:25 SEA

    UA24782 stops · 34h00m

    found Sep 25 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $545 USD

    Continue on the seller's site — $545

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Oct 20 · 13:20 SEA

    AS1231 stop · 17h00m

    found Sep 25 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $629 USD

    Continue on the seller's site — $629

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

round trips

Cheapest round trips

The cheapest out-and-back pairs the cache holds, any dates.

  • May 1 → May 4 · 13:50 SEA

    AS1234 stops · 66h40m in all, both ways

    found Sep 23 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $3,114 USD

    Continue on the seller's site — $3,114

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

carriers

Carriers seen on this corridor

  • Alaska Airlines
  • China Airlines
  • United

Marketing carriers; the operating airline is shown by the seller.

questions

Questions

What is the cheapest fare from Seattle to Seoul?
The cheapest one-way fare from Seattle to Seoul we have seen is $545 USD, departing Oct 1 (found Sep 25): United UA 2478, 2 stops, 34h00m.
Is there a nonstop flight from Seattle to Seoul?
No nonstop fare is held for the 2 departure dates seen — every row has at least one stop; carriers seen: Alaska Airlines, China Airlines, United.
Which month is cheapest to fly from Seattle to Seoul?
By month, Oct 2026 is the cheapest we hold at $545 USD and Feb 2027 the most expensive at $599 USD — a spread of 10%.
How old is this price?
It is the cheapest fare we saw for that date. We look again at least once a day for the routes people search, and stop showing a price two days after we last saw it, so a price here can be up to four days old — the date beside it says when that was. The seller's page shows the price right now.
How does a2bflight rank results?
By price and duration only; commission never enters the order. Cheapest means cheapest among what the store holds for this corridor. A click that books may earn a2bflight a commission from the seller; the price you see is the seller's own. See how we rank and what we keep.

more routes

Related routes

Return: Flights from Seoul (GMP) to Seattle (SEA) →Every route from Seattle →Every route to Seoul →

More from Seattle

Other destinations with a cached fare from this origin, cheapest first.

More to Seoul

Other origins with a cached fare to this destination, cheapest first.