Alaska Airlines(AS) flights from Seattle to Seoul-2026 Cheap Flights

Flight INFO & Alaska Airlines(AS) flights from Seattle to Seoul

Cheapest one-way flight price	US$381
Cheapest return ticket price	US$806
Cheapest month	October
Peak season for travel	July
Flight distance	8,341.99 km
Average flight time	11 hours 56 minutes
Popular airline	Korean Air
Frequency	～14/week

Book Alaska Airlines(AS) flights from Seattle to Seoul

One way
Round-trip

Alaska Airlines(AS) flights from Seattle to Seoul & Flight Schedule

Flight info.

Departure

Arrival

Weekly Schedule

AS528

Alaska Airlines

08:41

SEA

2.3h

Nonstop

10:59

SFO

S M T W T F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS725

Alaska Airlines

07:18

SEA

2.3h

Nonstop

09:37

SFO

S M T W T F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS528

Alaska Airlines

08:41

SEA

2.3h

Nonstop

10:59

SFO

S M T W T F S

OZ211

Asiana Airlines

23:44

SFO

12.0h

Nonstop

03:45

ICN

S M T W T F S

AS725

Alaska Airlines

07:18

SEA

2.3h

Nonstop

09:37

SFO

S M T W T F S

OZ211

Asiana Airlines

23:44

SFO

12.0h

Nonstop

03:45

ICN

S M T W T F S

AS417

Alaska Airlines

21:40

SEA

2.3h

Nonstop

23:59

SFO

- - T W - F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS590

Alaska Airlines

20:30

SEA

2.3h

Nonstop

22:45

SFO

S M T W T - S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS1385

Alaska Airlines

15:45

SEA

2.3h

Nonstop

18:00

SFO

S M T W T F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS680

Alaska Airlines

13:41

SEA

2.3h

Nonstop

15:56

SFO

S M T W T F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS688

Alaska Airlines

10:47

SEA

2.3h

Nonstop

13:03

SFO

S M T W T F S

YP112

Air Premia

15:20

SFO

13.0h

Nonstop

21:20

ICN

S - T - T - -

AS2006

Alaska Airlines

13:27

SEA

1.0h

Nonstop

14:25

YVR

S M T W T F S

WS3560

WestJet

22:30

YVR

1.0h

Nonstop

23:30

YLW

S M T W T F S

WS182

WestJet

06:05

YLW

1.1h

Nonstop

08:10

YYC

S M T W T F S

WS086

WestJet

16:00

YYC

11.8h

Nonstop

18:45

ICN

S - T W T F S

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Alaska Airlines(AS) flights from Seattle to Seoul Flight Booking FAQ

Which airlines offer direct flights from Seattle to Seoul?

At the moment, you can catch a nonstop flight from Seattle to Seoul with the following airlines, including: Korean Air Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
How long is a flight from Seattle to Seoul?

It takes about 11 hours 56 minutes to fly from Seattle to Seoul.
When is the best time to book flights from Seattle to Seoul?

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Seoul is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
How many flights are there per week from Seattle to Seoul?

Based on Trip.com data in the past 4 weeks, there is 21 flight per week flying from Seattle to Seoul. You can check the weekly schedule for popular airlines on this route below: Korean Air: S/M/T/W/T/F/S -- KE5020 (13:24) Korean Air: S/M/T/W/T/F/S -- KE042 (13:19) Delta Air Lines: S/M/T/W/T/F/S -- DL7838 (13:19)
When are flight tickets from Seattle (SEA) to Seoul (SEL) the cheapest?

The cheapest months to fly from Seattle to Seoul is October, when demand for travel is lower.
Which upcoming date is cheapest to fly from Seattle to Seoul on?

After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Seattle to Seoul on September 8, 2026 with WestJet, with prices starting at US$377.
Which airports fly into Seoul from Seattle?

You can land at any one of the following hubs in Seoul: Gimpo International Airport (GMP), and Incheon International Airport (ICN). Flying from Seattle-Tacoma International Airport to Incheon International Airport (SEA-ICN) is by far the most common option on this route.
Is there any time difference between Seattle and Seoul?

The time difference between Seoul and Seattle is 17h.
How do I change or cancel my ticket from Seattle to Seoul?

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Popular Content

Find Alaska Airlines(AS) flights from Seattle to Seoul

Flight INFO & Alaska Airlines(AS) flights from Seattle to Seoul

Book Alaska Airlines(AS) flights from Seattle to Seoul

Alaska Airlines(AS) flights from Seattle to Seoul & Flight Schedule

Alaska Airlines(AS) flights from Seattle to Seoul Flight Booking FAQ

Which airlines offer direct flights from Seattle to Seoul?

How long is a flight from Seattle to Seoul?

When is the best time to book flights from Seattle to Seoul?

How many flights are there per week from Seattle to Seoul?

When are flight tickets from Seattle (SEA) to Seoul (SEL) the cheapest?

Which upcoming date is cheapest to fly from Seattle to Seoul on?

Which airports fly into Seoul from Seattle?

Is there any time difference between Seattle and Seoul?

How do I change or cancel my ticket from Seattle to Seoul?

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