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Cheap flights from Seattle to Seoul

One-way from $501, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Sat, Oct 17Any priceSun, Oct 18Any priceMon, Oct 19Any priceTue, Oct 20$501Wed, Oct 21Any priceThu, Oct 22Any priceFri, Oct 23Any priceSat, Oct 24Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
$501
China Airlines, flight CI 21Found 3 days ago, 1 adult
Check price on Aviasales
1:15amSeattleTue, Oct 20
Travel time 15h 20m, 1 stopSEAICN
8:35amSeoulWed, Oct 21
$510
Alaska Airlines, flight AS 2262Found 7 days ago, 1 adult
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10:03amSeattleThu, Nov 12
Travel time 19h 12m, 2 stopsSEAICN
10:15pmSeoulFri, Nov 13
$511
Air Canada, flight AC 8811Found 7 days ago, 1 adult
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7:05pmSeattleTue, Nov 17
Travel time 12h 54m, 1 stopSEAICN
12:59amSeoulThu, Nov 19
$512
Alaska Airlines, flight AS 725Found 7 days ago, 1 adult
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7:18amSeattleThu, Nov 19
Travel time 21h 23m, 2 stopsSEAICN
9:41pmSeoulFri, Nov 20
$570
China Airlines, flight CI 21Found 6 days ago, 1 adult
Check price on Aviasales
1:15amSeattleSun, Oct 11
Travel time 15h 15m, 1 stopSEAICN
8:30amSeoulMon, Oct 12

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in South KoreaTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Seoul, booked ahead at a fixed price.
    See options
  • Things to do in SeoulPopular tours from $32 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for South Korea from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234–5–6–7–8–9–10–11$57012–13–14–15–16–17–18–19–20$50121–22–23–24–25–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12$51013–14–15–16–17$51118–19$51220–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
$510 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Oct 20, $501.

Lowest fares by month

In the fares found this week, October has the lowest: from $501 one-way, against $634 in December. Pick a month to see its cheapest date.

$0$250$500$750$501OctNovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$501Tue, Oct 201 stop
November$510Thu, Nov 122 stops
December$634Mon, Dec 281 stop
January 2027—
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Questions travellers ask

What is the cheapest month to fly from Seattle to Seoul?

In the fares found this week, October has the lowest: from $501 one-way, against $634 in December.

Are there direct flights from Seattle to Seoul?

Yes. Recent fares include nonstop flights with Korean Air.

How long is the flight from Seattle to Seoul?

A nonstop flight takes about 11h 50m. The distance is 5,204 mi.

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