PDX - SIN

$372 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 3/6. 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
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Everything you should know

Cheapest round-trip
$772
Typical prices: $858-$1,209
Singapore Airlines
Thu 3/12Thu 3/19
PDX - SIN • 1 stop
Cheapest one-way
$372
Typical prices: $497-$612
Multiple Airlines
Fri 3/6
PDX - SIN • 2 stops
Top airlines
Air Canada
Cheapest • from $819 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 25% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Thu, Mar 12 - Thu, Mar 19
Singapore Airlines Logo
6:00 am - 5:45 pmPDX-SIN
20h 45m1 stop
Singapore Airlines Logo
9:00 am - 12:21 pmSIN-PDX
18h 21m1 stop
$772Singapore Airlines
Find Deal
Thu, Mar 19 - Mon, Apr 27
Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
24h 45m1 stop
Air Canada Logo
11:55 pm - 2:40 pmSIN-PDX
29h 45m2 stops
$807Air Canada
Find Deal
Tue, Mar 10 - Thu, Mar 19
Air Canada Logo
9:50 am - 7:00 amPDX-SIN
30h 10m1 stop
Air Canada Logo
8:50 am - 11:04 pmSIN-PDX
53h 14m2 stops
$819Air Canada
Find Deal
Tue, Mar 10 - Thu, Mar 19
Air Canada Logo
7:30 am - 7:00 amPDX-SIN
32h 30m2 stops
Air Canada Logo
8:50 am - 11:04 pmSIN-PDX
53h 14m2 stops
$823Air Canada
Find Deal
Fri, Jan 16 - Thu, Jan 29
Air Canada Logo
7:00 pm - 7:00 amPDX-SIN
20h 00m1 stop
Air Canada Logo
6:35 am - 2:40 pmSIN-PDX
24h 05m2 stops
$830Air Canada
Find Deal
Mon, Feb 2 - Thu, Feb 19
Air Canada Logo
9:50 am - 12:55 amPDX-SIN
23h 05m2 stops
Air Canada Logo
8:50 am - 12:44 amSIN-PDX
31h 54m2 stops
$831Air Canada
Find Deal
Tue, Mar 10 - Thu, Mar 19
Air Canada Logo
9:50 am - 7:00 amPDX-SIN
30h 10m1 stop
Air Canada Logo
8:50 am - 9:15 amSIN-PDX
39h 25m1 stop
$832Air Canada
Find Deal
Mon, Feb 2 - Thu, Feb 19
Air Canada Logo
9:50 am - 12:55 amPDX-SIN
23h 05m2 stops
Air Canada Logo
8:50 am - 9:15 amSIN-PDX
16h 25m1 stop
$834Air Canada
Find Deal
Sun, Jan 18 - Sun, Jan 25
Air Canada Logo
7:00 pm - 12:55 amPDX-SIN
37h 55m2 stops
Air Canada Logo
9:00 pm - 6:30 pmSIN-PDX
37h 30m2 stops
$835Air Canada
Find Deal
Tue, Mar 10 - Fri, Mar 20
Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
24h 45m1 stop
Air Canada Logo
8:50 am - 11:09 pmSIN-PDX
53h 19m2 stops
$844Air Canada
Find Deal
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 March.

What’s the cheapest day of the week to fly from Portland to Singapore?

The average price of all round-trip flights from Portland to Singapore clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Singapore on a Tuesday and more expensive on a Saturday. On your return trip to Portland, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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 September, where tickets cost $749 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,678 and $1,090 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$372
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 25% lower on average.
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 $372 for a one-way ticket and $772 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 $956 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 $1,154 and an overall rating of 8.1.

  • 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 5 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 1170 reviews
8.7Crew
8.2Entertainment
8.5Boarding
8.1Food
8.3Comfort
Airline reviews

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

10.0 ExcellentVivian, Nov 2025SEA - ICN
Read more Korean Air reviews

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

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

a completely full flight - felt quite carmped in, despite being on the window seat. Meal served could better. Surely different from pre-covid trips I used to take to and from Bangkok.

SQ service is great as always. However, the food quality seems to have gotten a lot worse recently.

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

Best service airline. The cabin crew is attentive and friendly. Inflight entertainment system is good

Best airline I think. No problems with anything. Crew were great, no problems with the airline food and entertainment and a smooth flight.

Airline should consider adding a small meal at the last leg of the flight, right now there is 7 hours of no meal break.

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Headwind delayed our flight which wasn’t the airlines fault

The food wasn’t good at all. I skipped meals .

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

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

Information on your arrival and departure airports