PDX - SIN

$451 Find Cheap Flights from Portland to Singapore

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 Singapore departing on 9/1. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Singapore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Singapore, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Singapore, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$897
Typical prices: $1,046-$901
Singapore Airlines
sáb 10/10qui 10/15
PDX - SIN • 1 stop
Cheapest one-way
$451
Typical prices: $578-$641
Multiple Airlines
ter 9/1
PDX - SIN • 2 stops
Top airlines
Cheapest • from $897 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Singapore. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $988 (round-trip)
Shortest trip • 19h 35m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Singapore (PDX-SIN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Singapore 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 Singapore

sáb, out 10 - qui, out 15
Singapore Airlines Logo
6:07 am - 5:35 pm
PDX
-
SIN
20h 28m
1 stop
Singapore Airlines Logo
9:00 am - 12:22 pm
SIN
-
PDX
18h 22m
1 stop
$897Singapore Airlines
dom, out 4 - seg, out 12
Singapore Airlines Logo
6:07 am - 5:35 pm
PDX
-
SIN
20h 28m
1 stop
Singapore Airlines Logo
9:15 am - 10:33 pm
SIN
-
PDX
28h 18m
1 stop
$917Singapore Airlines
ter, out 6 - ter, out 27
Singapore Airlines Logo
5:40 pm - 7:40 am
PDX
-
SIN
23h 00m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
19h 35m
1 stop
$940Singapore Airlines
qui, set 10 - qui, set 24
Multiple Airlines Logo
8:19 am - 11:35 pm
PDX
-
SIN
24h 16m
2 stops
Multiple Airlines Logo
2:30 pm - 4:50 pm
SIN
-
PDX
41h 20m
2 stops
$941Multiple Airlines
sex, set 18 - sáb, out 3
Singapore Airlines Logo
6:05 am - 5:35 pm
PDX
-
SIN
20h 30m
1 stop
Singapore Airlines Logo
9:00 am - 12:22 pm
SIN
-
PDX
18h 22m
1 stop
$942Singapore Airlines
seg, out 19 - seg, out 26
Singapore Airlines Logo
7:00 am - 12:55 am
PDX
-
SIN
26h 55m
2 stops
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
19h 35m
1 stop
$952Singapore Airlines
qui, set 10 - qui, set 24
Singapore Airlines Logo
2:50 pm - 7:40 am
PDX
-
SIN
25h 50m
1 stop
Singapore Airlines Logo
9:00 am - 7:50 pm
SIN
-
PDX
25h 50m
1 stop
$965Singapore Airlines
qui, out 1 - sáb, out 10
Singapore Airlines Logo
2:50 pm - 7:40 am
PDX
-
SIN
25h 50m
1 stop
Singapore Airlines Logo
9:15 am - 4:50 pm
SIN
-
PDX
22h 35m
1 stop
$985Singapore Airlines
seg, mai 4 - dom, mai 10
Qatar Airways Logo
10:35 am - 9:20 am
PDX
-
SIN
31h 45m
2 stops
Qatar Airways Logo
1:30 am - 6:36 pm
SIN
-
PDX
32h 06m
2 stops
$1,001Qatar Airways
dom, out 4 - dom, out 11
Qatar Airways Logo
9:40 am - 3:45 pm
PDX
-
SIN
39h 05m
2 stops
Qatar Airways Logo
3:15 am - 12:10 am
SIN
-
PDX
35h 55m
2 stops
$1,047Qatar Airways
Booking Insights

KAYAK's insights & trends for Portland to Singapore flights

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

How much is a round-trip flight from Portland to Singapore?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Singapore departing in October.

What is the cheapest month to fly from Portland to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Singapore, 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 Singapore is May, where tickets cost $858 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,654 and $1,105 respectively.

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

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 Singapore, 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 Singapore, you should book around 2 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$451
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Portland to Singapore

When to book flights from Portland to Singapore

Are your dates flexible? Find out the best times to travel from Portland to Singapore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Singapore

  • What is the cheapest flight from Portland to Singapore?

    In the last 3 days, the lowest price for a flight from Portland to Singapore was $451 for a one-way ticket and $897 for a round-trip.

  • Do I need a passport to fly between Portland and Singapore?

    A passport is required to fly from Portland to Singapore.

  • Which airports will I be using when flying from Portland to Singapore?

    Portland and Singapore are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Singapore Changi.

  • Which aircraft models fly most regularly from Portland to Singapore?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Singapore?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Portland and Singapore, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Singapore from Portland?

    San Francisco is the most popular layover city among KAYAK users traveling from Portland to Singapore.

  • Which is the best airline for flights from Portland to Singapore, Korean Air or Singapore Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Singapore are Korean Air and Singapore Airlines. With an average price for the route of $978 and an overall rating of 8.4, Korean Air is the most popular choice. Singapore Airlines is also a great choice for the route, with an average price of $997 and an overall rating of 8.2.

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

    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 Singapore.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Singapore from Portland 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 Singapore?

    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 to Singapore with an airline and back to Portland with another airline. Booking your flights between Portland and SIN can sometimes prove cheaper using this method.

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

    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 to Singapore from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Portland to Singapore

 
See real verified KAYAK customer reviews for airlines flying from Portland to Singapore. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Singapore? 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 1212 reviews
8.3Comfort
8.2Entertainment
8.5Boarding
8.1Food
8.7Crew
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

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.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

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 was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

Kayak really screwed up by offloading the booking to a third party. They were completely inept and caused a bunch of toil. I will never use Kayak again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

It was okay. I feel that Singapore Airlines isn't as good as it used to be but it's still not bad

It was fine. Nothing special but nothing went wrong so all good.

Overall the airline tried to give excellent service. The wheelchair service was bad at SFO. My baggage was also delayed but I thank them for taking the trouble to find it and deliver it to my home.

I felt that the whole experience went very smoothly. The aircraft was extremely clean and tidy on boarding. The cabin crew were beautifully turned out very, very efficient and were a credit to Singapore Airlines who are now my favourite carrier.

Excellent crew service. Professional, courteous. Service with a smile. Good food Very decent flight experience

Overall were very good and I was satisfied w/ all the food and services.

Service was very good, food and entertainment systems were good

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

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

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

My wallet was stolen while I was sleeping on the plane.

Good boarding but extremely cold temperature in both flights (60 F!).

The whole plane smelled and felt old. The seats were very uncomfortable. Multiple delays. Extra fees.

Everything you need to know for your flight from Portland to Singapore

Information on your arrival and departure airports