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Flights from Portland to Seoul

Search cheap flights from Portland to Seoul in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$369, and round-trip tickets start at US$920.

      • PDX 14:45
        21h 45m
        1 stop
        ICN 04:30
        Portland - Seoul | Wed, Aug 5 | Alaska Airlines
        ICN 13:00
        19h 47m
        1 stop
        PDX 16:47
        Seoul - Portland | Wed, Aug 12 | Air Premia
        US$920 US$1,339
        31% off
        31% off
        US$1,339 US$920
      • PDX 17:38
        18h 52m
        1 stop
        ICN 04:30
        Portland - Seoul | Fri, Aug 21 | Alaska Airlines
        ICN 13:00
        26h 59m
        1 stop
        PDX 23:59
        Seoul - Portland | Tue, Aug 25 | Air Premia
        US$934 US$1,339
        30% off
        30% off
        US$1,339 US$934
      • PDX 17:42
        30h 8m
        1 stop
        ICN 15:50
        Portland - Seoul | Thu, Sep 3 | Frontier Airlines
        ICN 13:00
        17h 27m
        1 stop
        PDX 14:27
        Seoul - Portland | Thu, Sep 10 | Air Premia
        US$937 US$1,339
        30% off
        30% off
        US$1,339 US$937
      • PDX 10:37
        19h 3m
        1 stop
        ICN 21:40
        Portland - Seoul | Sun, Sep 6 | Alaska Airlines
        ICN 19:15
        17h 36m
        1 stop
        PDX 20:51
        Seoul - Portland | Wed, Sep 9 | Air Premia
        US$942
        30% off
        US$1,339 US$942
      • PDX 14:53
        32h 57m
        1 stop
        ICN 15:50
        Portland - Seoul | Thu, Sep 3 | Alaska Airlines
        ICN 13:00
        24h 55m
        1 stop
        PDX 21:55
        Seoul - Portland | Tue, Sep 8 | Air Premia
        US$945
        28% off
        US$1,339 US$945
      • PDX 17:38
        18h 52m
        1 stop
        ICN 04:30
        Portland - Seoul | Mon, Aug 24 | Alaska Airlines
        ICN 13:00
        19h 36m
        1 stop
        PDX 16:36
        Seoul - Portland | Mon, Aug 31 | Air Premia
        US$949
        28% off
        US$1,339 US$949
      • PDX 07:00
        29h 30m
        1 stop
        ICN 04:30
        Portland - Seoul | Fri, Aug 14 | Alaska Airlines
        ICN 13:00
        26h 59m
        1 stop
        PDX 23:59
        Seoul - Portland | Wed, Aug 19 | Air Premia
        US$951
        28% off
        US$1,339 US$951
      • PDX 07:00
        29h 30m
        1 stop
        ICN 04:30
        Portland - Seoul | Fri, Aug 7 | Alaska Airlines
        ICN 13:00
        19h 47m
        1 stop
        PDX 16:47
        Seoul - Portland | Wed, Aug 12 | Air Premia
        US$951
        28% off
        US$1,339 US$951
      • PDX 21:27
        39h 3m
        1 stop
        ICN 04:30
        Portland - Seoul | Thu, Aug 6 | Alaska Airlines
        ICN 13:00
        19h 47m
        1 stop
        PDX 16:47
        Seoul - Portland | Wed, Aug 12 | Air Premia
        US$951
        28% off
        US$1,339 US$951
      • PDX 20:18
        27h 32m
        1 stop
        ICN 15:50
        Portland - Seoul | Sat, Sep 5 | Alaska Airlines
        ICN 13:00
        23h 36m
        1 stop
        PDX 20:36
        Seoul - Portland | Tue, Sep 8 | Air Premia
        US$964
        28% off
        US$1,339 US$964
      • PDX 13:00
        17h 25m
        1 stop
        SEL 14:00
        Portland - Seoul | Thu, Jul 16 | Normal Airline
        SEL 15:00
        6h
        Nonstop
        PDX 16:00
        Seoul - Portland | Sat, Jul 18 | Normal Airline
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      • PDX 14:30
        36h 15m
        1 stop
        ICN 18:45
        Portland - Seoul | Tue, Aug 18 | WestJet
        US$369 US$666
        45% off
        45% off
        US$666 US$369
      • PDX 10:37
        19h 3m
        1 stop
        ICN 21:40
        Portland - Seoul | Wed, Sep 9 | Alaska Airlines
        US$399 US$666
        40% off
        40% off
        US$666 US$399
      • PDX 21:45
        31h 55m
        1 stop
        ICN 21:40
        Portland - Seoul | Sat, Aug 15 | Alaska Airlines
        US$441 US$666
        34% off
        34% off
        US$666 US$441
      • PDX 07:19
        22h 21m
        1 stop
        ICN 21:40
        Portland - Seoul | Fri, Aug 14 | Alaska Airlines
        US$443
        33% off
        US$666 US$443
      • PDX 10:10
        19h 30m
        1 stop
        ICN 21:40
        Portland - Seoul | Tue, Jul 21 | Air Canada
        US$453
        32% off
        US$666 US$453
      • PDX 19:45
        33h 55m
        1 stop
        ICN 21:40
        Portland - Seoul | Fri, Jul 24 | Air Canada
        US$453
        32% off
        US$666 US$453
      • PDX 14:30
        36h 15m
        1 stop
        ICN 18:45
        Portland - Seoul | Wed, Sep 9 | WestJet
        US$461
        31% off
        US$666 US$461
      • PDX 10:10
        19h 30m
        1 stop
        ICN 21:40
        Portland - Seoul | Tue, Aug 18 | Air Canada
        US$479
        28% off
        US$666 US$479
      • PDX 10:10
        19h 30m
        1 stop
        ICN 21:40
        Portland - Seoul | Thu, Aug 20 | Air Canada
        US$479
        28% off
        US$666 US$479
      • PDX 10:10
        19h 30m
        1 stop
        ICN 21:40
        Portland - Seoul | Thu, Aug 27 | Air Canada
        US$479
        28% off
        US$666 US$479
      • PDX 13:00
        17h 25m
        1 stop
        SEL 14:00
        Portland - Seoul | Thu, Jul 16 | Normal Airline
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        Find more flights

Cheapest airlines flights from Portland to Seoul

You can choose from 3 airlines that fly from Portland to Seoul, including United Airlines, Alaska Airlines, and Air Canada. WestJet has lowest fares on this route.
United Airlines logo United Airlines
Alaska Airlines logo Alaska Airlines
Air Canada logo Air Canada
Airlines are determined based on actual purchased flight tickets from Portland to Seoul according to previous 12 months data from Trip.com.

Portland to Seoul Flight Details

The distance between Portland and Seoul is about 8,457.43 km. Based on Trip.com's latest data, travel demand is highest in January. The off-season for travel is October.

Cheapest one-way flight priceUS$369
Cheapest return ticket priceUS$920
Cheapest monthOctober
Peak season for travelJanuary
Flight distance8,457.43 km
Popular airlineUnited Airlines
Flight statistics for the Portland–Seoul route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Portland to Seoul

Which month has the cheapest one-way flights from Portland to Seoul?

Average monthly one-way flight prices from Portland to Seoul, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Portland to Seoul is January, with an average price of US$503; while the month with the highest flight price is usually March, with an average price of up to US$885.

US$885
US$694
US$503
US$312
    Cheapest
  • US$737
    Jul
  • US$630
    Aug
  • US$555
    Sep
  • US$591
    Oct
  • US$624
    Nov
  • US$832
    Dec
  • US$503
    Jan
  • US$568
    Feb
  • US$885
    Mar
  • US$657
    Apr
  • US$575
    May
  • US$714
    Jun

Frequently Asked Questions

  • What are the cheapest flights from Portland to Seoul (PDX-SEL)?

    Based on Trip.com data, WestJet offers one-way fares as low as US$369 on Cheapest nonstop routes (e.g. PDX to ICN on Tue, Aug 18), while Alaska Airlines offers Cheapest nonstop round-trips from US$920 departing on Wed, Aug 5 and returning on Wed, Aug 12.
  • At the moment, several airlines serve connecting flights from Portland to Seoul, including: Alaska Airlines United Airlines Air Canada Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland 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.
  • To find best deals on flights from Portland to Seoul, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Aug 18, with one-way flights priced at just US$369.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is WestJet.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seoul travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Portland to Seoul is October, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Portland to Seoul on July 27, 2026 with Alaska Airlines, with prices starting at US$480.
  • You can land at any one of the following hubs in Seoul, with Portland International Airport to Incheon International Airport (PDX-ICN) is by far the most common option on this route: Gimpo International Airport (GMP) Incheon International Airport (ICN).
  • The time difference between Seoul and Portland is 17h.
  • 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.

Trip.com Airline Insights on Flights from Portland to Seoul

Which airline offers the cheapest direct flights from Portland to Seoul?

Data is based on the average price of all nonstop flights from Portland to Seoul on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Hawaiian Airlines provides the lowest-priced direct flights from Portland to Seoul, with fares starting at US$601.

US$472
US$601
US$731
US$861
US$990
Hawaiian Airlines
US$601
Hawaiian Airlines
United Airlines
US$710
United Airlines
Alaska Airlines
US$815
Alaska Airlines
Air Canada
US$901
Air Canada
Delta Air Lines
US$903
Delta Air Lines
Korean Air
US$990
Korean Air

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Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.