$495 Find Cheap Flights from Portland to South Korea

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to South Korea departing on 7/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheon2 stops$961
Busan
Busan2 stops$1,090
Seoul
Incheon2 stops$961
Busan
Busan2 stops$1,090

Book Cheap Portland to South Korea Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to South Korea that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to South Korea

Tue, Nov 3 - Mon, Nov 9
Alaska Airlines Logo
9:32 pm - 5:35 pm
PDX
-
ICN
27h 03m
2 stops
Alaska Airlines Logo
8:00 pm - 9:35 am
ICN
-
PDX
30h 35m
2 stops
$961Alaska Airlines
Wed, Oct 14 - Wed, Oct 28
Multiple Airlines Logo
10:45 am - 8:10 pm
PDX
-
ICN
17h 25m
1 stop
Multiple Airlines Logo
6:55 pm - 8:50 pm
ICN
-
PDX
17h 55m
1 stop
$962Multiple Airlines
Wed, Aug 26 - Wed, Sep 9
Multiple Airlines Logo
10:34 am - 8:10 pm
PDX
-
ICN
17h 36m
1 stop
Multiple Airlines Logo
6:00 pm - 4:50 pm
ICN
-
PDX
14h 50m
1 stop
$980Multiple Airlines
Tue, Aug 25 - Tue, Sep 8
Multiple Airlines Logo
9:35 pm - 8:10 pm
PDX
-
ICN
30h 35m
1 stop
Multiple Airlines Logo
9:50 am - 8:50 pm
ICN
-
PDX
27h 00m
2 stops
$986Multiple Airlines
Tue, Nov 3 - Sun, Nov 8
Alaska Airlines Logo
9:32 pm - 5:35 pm
PDX
-
ICN
27h 03m
2 stops
Alaska Airlines Logo
8:00 pm - 9:35 am
ICN
-
PDX
30h 35m
2 stops
$989Alaska Airlines
Tue, Sep 1 - Wed, Sep 30
EVA Air Logo
10:30 am - 12:50 pm
PDX
-
GMP
58h 20m
2 stops
EVA Air Logo
8:20 pm - 4:35 pm
GMP
-
PDX
36h 15m
2 stops
$1,228EVA Air
Tue, Sep 1 - Fri, Sep 11
STARLUX Airlines Logo
5:35 pm - 5:55 pm
PDX
-
PUS
32h 20m
2 stops
STARLUX Airlines Logo
6:55 pm - 10:01 pm
PUS
-
PDX
43h 06m
2 stops
$1,268STARLUX Airlines
Mon, Nov 2 - Wed, Nov 11
Japan Airlines Logo
7:01 am - 10:05 pm
PDX
-
GMP
22h 04m
2 stops
Japan Airlines Logo
7:40 pm - 4:34 pm
GMP
-
PDX
37h 54m
2 stops
$1,298Japan Airlines
Sun, Aug 30 - Mon, Sep 7
STARLUX Airlines Logo
7:22 pm - 5:55 pm
PDX
-
PUS
30h 33m
2 stops
STARLUX Airlines Logo
12:30 pm - 10:01 pm
PUS
-
PDX
25h 31m
2 stops
$1,331STARLUX Airlines
Mon, Aug 3 - Thu, Aug 27
Japan Airlines Logo
7:19 am - 9:15 pm
PDX
-
GMP
21h 56m
2 stops
Japan Airlines Logo
8:00 am - 4:50 pm
GMP
-
PDX
24h 50m
2 stops
$1,341Japan Airlines
Booking Insights

KAYAK's insights & trends for Portland to South Korea flights

Get data-powered insights and trends into flights from Portland to South Korea to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to South Korea?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to South Korea, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to South Korea is January, when tickets cost $161 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,103 and $960 respectively.

How far in advance should I book a flight from Portland to South Korea?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to South Korea, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to South Korea, you should book around 2 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$495
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Portland to Seoul Incheon Airport

FAQs - booking South Korea flights

  • How does KAYAK find such low prices on flights from Portland to South Korea?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to South Korea.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to South Korea?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to South Korea is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to South Korea?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to South Korea with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to South Korea?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Portland to South Korea

 
Need help choosing which airline to fly with from Portland to South Korea? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1217 reviews
8.3Comfort
8.7Crew
8.2Entertainment
8.1Food
8.5Boarding
Airline reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

4.0 OkayAnonymous, Apr 2026
GMP - CJU
Read more Korean Air reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

Felt like the oldest plane in Asiana Fleet. Screen was 5-6in only and no charging at all. Movie selection wasn't great.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

They did not let us board because one member needed a transit visa, which was not evident at the time of ticket purchase.

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

Everything you need to know for your flight from Portland to South Korea

Information on your arrival and departure airports