PDX - SIN

$413 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 8/6. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$845
Typical prices: $1,552-$1,240
Singapore Airlines
mar. 10/27mié. 12/23
PDX - SIN • 1 stop
Cheapest one-way
$413
Typical prices: $516-$599
United Airlines
jue. 8/6
PDX - SIN • 1 stop
Top airlines
Cheapest • from $845 (round-trip)
Best reviews • 8.2 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 $990 (round-trip)
Shortest trip • 20h 12m (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 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% 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

mar., oct. 27 - mié., dic. 23
Singapore Airlines Logo
6:06 am - 5:45 pm
PDX
-
SIN
20h 39m
1 stop
Singapore Airlines Logo
9:00 am - 12:22 pm
SIN
-
PDX
19h 22m
1 stop
$845Singapore Airlines
lun., sep. 28 - lun., oct. 12
Singapore Airlines Logo
7:03 am - 7:10 pm
PDX
-
SIN
21h 07m
1 stop
Singapore Airlines Logo
9:05 am - 8:50 pm
SIN
-
PDX
26h 45m
1 stop
$876Singapore Airlines
lun., ago. 17 - mar., sep. 1
United Airlines Logo
7:15 pm - 6:15 am
PDX
-
SIN
20h 00m
1 stop
United Airlines Logo
8:45 am - 6:19 pm
SIN
-
PDX
24h 34m
1 stop
$891United Airlines
lun., ago. 17 - mar., sep. 1
United Airlines Logo
3:43 pm - 6:15 am
PDX
-
SIN
23h 32m
1 stop
United Airlines Logo
8:45 am - 9:05 pm
SIN
-
PDX
27h 20m
2 stops
$895United Airlines
mar., oct. 27 - jue., oct. 29
United Airlines Logo
7:30 am - 8:15 pm
PDX
-
SIN
21h 45m
1 stop
United Airlines Logo
10:10 am - 12:54 am
SIN
-
PDX
29h 44m
1 stop
$897United Airlines
mar., oct. 27 - jue., oct. 29
United Airlines Logo
5:35 am - 8:15 pm
PDX
-
SIN
23h 40m
1 stop
United Airlines Logo
10:45 am - 12:54 am
SIN
-
PDX
29h 09m
2 stops
$902United Airlines
lun., ago. 17 - mar., sep. 1
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
6:15 am - 6:19 pm
SIN
-
PDX
27h 04m
3 stops
$903United Airlines
lun., ago. 3 - mar., sep. 29
United Airlines Logo
5:00 am - 12:45 am
PDX
-
SIN
28h 45m
2 stops
United Airlines Logo
8:45 am - 5:46 pm
SIN
-
PDX
24h 01m
2 stops
$908United Airlines
lun., ago. 17 - mar., sep. 1
United Airlines Logo
9:00 am - 12:45 am
PDX
-
SIN
24h 45m
2 stops
United Airlines Logo
6:15 am - 6:19 pm
SIN
-
PDX
27h 04m
3 stops
$915United Airlines
mar., ago. 4 - dom., sep. 27
United Airlines Logo
5:15 am - 6:35 pm
PDX
-
SIN
22h 20m
1 stop
United Airlines Logo
8:45 am - 10:57 pm
SIN
-
PDX
29h 12m
1 stop
$925United Airlines
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 January, where tickets cost $857 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,738 and $1,295 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 29% 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$413
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 2% 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 5 days, the lowest price for a flight from Portland to Singapore was $413 for a one-way ticket and $845 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?

    Star Alliance is the only airline alliance operating flights between Portland and Singapore.

  • 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, Singapore Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Singapore are Singapore Airlines and United Airlines. With an average price for the route of $1,000 and an overall rating of 8.2, Singapore Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,312 and an overall rating of 7.4.

  • 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 3 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.
8.2
Singapore AirlinesOverall score based on 1539 reviews
8.3Boarding
8.6Crew
7.8Food
8.0Comfort
8.1Entertainment
Airline reviews

Subject: Complaint Regarding Cabin Temperature on Flight SQ447 (DAC–SIN)** Dear Singapore Airlines Customer Service, I am writing to express my disappointment regarding my recent experience on flight SQ447 from Dhaka (DAC) to Singapore (SIN). After boarding, it became apparent that the cabin air conditioning was not functioning adequately. When we initially raised the concern, a flight attendant informed us that it would take approximately 10 minutes for the temperature to cool down once the aircraft began operating. We trusted this explanation; however, the cabin remained uncomfortably warm, and many passengers—including my family—were sweating for an extended period. After approximately 45 minutes, I raised the issue again. While the attendant mentioned that adjustments had been made, the response did not reflect the seriousness of the ongoing discomfort. It was only after about an hour into the flight that the temperature finally improved and the cabin became more comfortable. I also spoke with several other passengers seated nearby, and they confirmed they were experiencing the same issue. As a frequent traveler who has always associated Singapore Airlines with high standards of service, this experience was very disappointing. It has made me reconsider choosing this route with your airline in the future. I hope you will review this incident and take the necessary steps to ensure that such situations are handled more promptly and professionally going forward. Thank you for your attention to this matter. Sincerely, Mohammed Shahriar

4.0 Okaymohammed, Jun 2026
DAC - SIN
Read more Singapore Airlines reviews

Subject: Complaint Regarding Cabin Temperature on Flight SQ447 (DAC–SIN)** Dear Singapore Airlines Customer Service, I am writing to express my disappointment regarding my recent experience on flight SQ447 from Dhaka (DAC) to Singapore (SIN). After boarding, it became apparent that the cabin air conditioning was not functioning adequately. When we initially raised the concern, a flight attendant informed us that it would take approximately 10 minutes for the temperature to cool down once the aircraft began operating. We trusted this explanation; however, the cabin remained uncomfortably warm, and many passengers—including my family—were sweating for an extended period. After approximately 45 minutes, I raised the issue again. While the attendant mentioned that adjustments had been made, the response did not reflect the seriousness of the ongoing discomfort. It was only after about an hour into the flight that the temperature finally improved and the cabin became more comfortable. I also spoke with several other passengers seated nearby, and they confirmed they were experiencing the same issue. As a frequent traveler who has always associated Singapore Airlines with high standards of service, this experience was very disappointing. It has made me reconsider choosing this route with your airline in the future. I hope you will review this incident and take the necessary steps to ensure that such situations are handled more promptly and professionally going forward. Thank you for your attention to this matter. Sincerely, Mohammed Shahriar

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

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.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Smooth travel. Immediate update prior flight delay so I can arrange myself properly without too rush.

Everything was the best it could be. Crew found me with pre- ordered food. Excellent experience!

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

The flight was comfortable and the staff were helpful and friendly. However, we did not know we were flying PAL until we arrived in Canada, so it was a bit disconcerting. In addition, which port we were leaving from was confusing.

Disappointing experience with the cabin crews on this Air Canada flight. Some crew members came across as quite rude, and one bumped into my arm without even acknowledging it or apologising. A little courtesy and kindness would have gone a long way. Air turbulence is understandable. Human turbulence from the crew, less so.

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

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

Information on your arrival and departure airports