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Cheap Flights from Portland to Singapore Changi

Compare Portland to Singapore Changi flight deals

Find the cheapest month or even day of the year to fly to Singapore Changi

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Flight deals from Portland to Singapore Changi

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Singapore Changi Airport? If you want to travel next month, return fares start from $1,784. Find the lowest prices on one-way and return tickets right here.
Singapore.$1,726 per passenger.Departing Wed, 27 Jan, returning Wed, 10 Feb.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Portland on Wed, 27 Jan, arriving in Singapore Changi.Inbound indirect flight with Korean Air, departs from Singapore Changi on Wed, 10 Feb, arriving in Portland.Price includes taxes and charges.From $1,726, select.
Singapore.$1,766 per passenger.Departing Sat, 14 Nov, returning Fri, 27 Nov.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Portland on Sat, 14 Nov, arriving in Singapore Changi.Inbound indirect flight with Korean Air, departs from Singapore Changi on Fri, 27 Nov, arriving in Portland.Price includes taxes and charges.From $1,766, select.
Singapore.$1,779 per passenger.Departing Fri, 4 Dec, returning Sat, 12 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Portland on Fri, 4 Dec, arriving in Singapore Changi.Inbound indirect flight with Korean Air, departs from Singapore Changi on Sat, 12 Dec, arriving in Portland.Price includes taxes and charges.From $1,779, select.
Singapore.$1,789 per passenger.Departing Thu, 3 Sep, returning Tue, 22 Sep.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Thu, 3 Sep, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departs from Singapore Changi on Tue, 22 Sep, arriving in Portland.Price includes taxes and charges.From $1,789, select.
Singapore.$1,790 per passenger.Departing Thu, 8 Oct, returning Tue, 13 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Thu, 8 Oct, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Tue, 13 Oct, arriving in Portland.Price includes taxes and charges.From $1,790, select.
Singapore.$1,792 per passenger.Departing Tue, 10 Nov, returning Tue, 1 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Tue, 10 Nov, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Tue, 1 Dec, arriving in Portland.Price includes taxes and charges.From $1,792, select.
Singapore.$1,803 per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Thu, 24 Sep, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Thu, 1 Oct, arriving in Portland.Price includes taxes and charges.From $1,803, select.
Singapore.$1,811 per passenger.Departing Tue, 2 Feb, returning Thu, 25 Feb.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Portland on Tue, 2 Feb, arriving in Singapore Changi.Inbound indirect flight with Korean Air, departs from Singapore Changi on Thu, 25 Feb, arriving in Portland.Price includes taxes and charges.From $1,811, select.
Singapore.$1,813 per passenger.Departing Mon, 31 Aug, returning Mon, 14 Sep.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Mon, 31 Aug, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departs from Singapore Changi on Mon, 14 Sep, arriving in Portland.Price includes taxes and charges.From $1,813, select.
Singapore.$1,813 per passenger.Departing Mon, 1 Mar, returning Tue, 9 Mar.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Mon, 1 Mar, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departs from Singapore Changi on Tue, 9 Mar, arriving in Portland.Price includes taxes and charges.From $1,813, select.
Singapore.$1,816 per passenger.Departing Sun, 25 Oct, returning Mon, 2 Nov.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Sun, 25 Oct, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departs from Singapore Changi on Mon, 2 Nov, arriving in Portland.Price includes taxes and charges.From $1,816, select.
Singapore.$1,904 per passenger.Departing Fri, 7 May, returning Sun, 23 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Fri, 7 May, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Sun, 23 May, arriving in Portland.Price includes taxes and charges.From $1,904, select.
Singapore.$1,921 per passenger.Departing Sun, 23 Aug, returning Sat, 29 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Sun, 23 Aug, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Sat, 29 Aug, arriving in Portland.Price includes taxes and charges.From $1,921, select.
Singapore.$2,080 per passenger.Departing Wed, 9 Dec, returning Fri, 1 Jan.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Portland on Wed, 9 Dec, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departs from Singapore Changi on Fri, 1 Jan, arriving in Portland.Price includes taxes and charges.From $2,080, select.
Singapore.$2,739 per passenger.Departing Thu, 17 Jun, returning Wed, 30 Jun.Return flight with Alaska Airlines and EVA Air.Outbound indirect flight with Alaska Airlines, departs from Portland on Thu, 17 Jun, arriving in Singapore Changi.Inbound indirect flight with EVA Air, departs from Singapore Changi on Wed, 30 Jun, arriving in Portland.Price includes taxes and charges.From $2,739, select.
Singapore.$2,940 per passenger.Departing Fri, 1 Jan, returning Fri, 8 Jan.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Fri, 1 Jan, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departs from Singapore Changi on Fri, 8 Jan, arriving in Portland.Price includes taxes and charges.From $2,940, select.

Find the cheapest month to fly from Portland to Singapore Changi

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Singapore Changi flights are currently cheapest in November.
Aug
from $1,921
Sep
from $1,789
Oct
from $1,790
Nov
from $1,766
Dec
from $1,779
Jan
from $2,940
Feb
from $1,811
Mar
from $1,813
Apr
from $3,508
May
from $1,904
Jun
from $2,739
Jul
from $3,928

Portland to Singapore Changi: Alternative routes

Compare routes from Portland to Singapore below. You may find an airport to fly into that's cheaper, faster, or easier than Singapore Changi.

Seletar

14km from central Singapore
Closest
Search flights

Singapore Changi

18km from central Singapore
Cheapest
from $1,726
Search flights

Portland to Singapore: Flight information

The things to know before you go.
Cheapest flight found$1,726
Cheapest month to flyJanuary

Finding cheap flights from Portland to Singapore Changi: Frequently asked questions

The best price we found for a return flight from Portland to Singapore Changi is $1,726. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to Singapore Changi. But we found flights with one or more stops from $1,726.
As of August 2026, there are no flights flying from Portland to Singapore Changi.
The cheapest month to fly from Portland to Singapore Changi is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Singapore Changi Airport on Wednesday, 27 January 2027.
No airlines currently offer direct flights between Portland Airport and Singapore Changi Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Singapore Changi but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Singapore is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Korean Air offers the cheapest flight tickets to Singapore Changi.

Flying from Portland Airport (PDX) to Singapore Changi Airport (SIN): what you need to know

  • Singapore is 16 hours ahead of Portland and is in the UTC+8 timezone.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably catch your PDX to SIN flight.

  • You can expect bigger queues during popular months like July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a smart move.

  • We make it a cinch to book a flight with a stopover. To see your options for tickets from Portland Airport to Singapore Changi Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to tour the city of your choice. Stopovers between PDX and SIN include:

    • Los Angeles International Airport

    • San Francisco International Airport

    • Vancouver International Airport

How to find the cheapest flights from Portland Airport (PDX) to Singapore Changi Airport (SIN)

  • $944 is the lowest price for a one-way Portland Airport to Singapore Changi Airport flight. Return flights start from $1,726. These fares may change based on availability and demand.

  • It's usually smart to book as early as possible if you're hoping to get cheap tickets from PDX to SIN. That's because flight prices are based on demand, which tends to rise closer to the date of departure.

  • The 'Whole month' tool shows you the cheapest flights from Portland Airport to Singapore Changi Airport across every month. It's an easy way to find a bargain if your travel dates are flexible.

  • There's no need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll update you the moment there's a better deal on cheap flights from PDX to SIN.

  • Pick your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Portland Airport to Singapore Changi Airport.

Handy information about Portland Airport (PDX)

  • You'll find PDX at 7000 NE Airport Way.

  • Portland Airport has a strong on-time performance, making delays less likely. Departures from PDX arrive at their destination as scheduled 83% of the time.

  • To get to Portland Airport from central Portland, it'll take around 20 minutes if you're going by car. Of course, this depends on traffic. It's approximately 19 kilometres from the airport to the city centre.

  • Catching public transport? Expect a trip time of around 40 minutes.

  • Need a handy hotel near PDX? If you're boarding an early flight from Portland Airport to Singapore Changi Airport, these accommodation options will have you sleeping moments from your departure lounge:

Arriving at Singapore Changi Airport (SIN)

  • The last thing you need is a lengthy trip to your hotel if you're arriving on a late Portland Airport to Singapore Changi Airport flight. Stay at one of these accommodation options near SIN instead:

  • Fast-track your adventure by picking up a Singapore Changi Airport rental car. Grab your wheels from Avis, Sixt or Green Motion to explore Singapore and beyond.

  • Booking your vehicle from Singapore Changi Airport around two weeks in advance boosts your odds of scoring a great price.

Getting from Singapore Changi Airport (SIN) to central Singapore

  • Singapore Changi Airport to central Singapore has a drive time of around 25 minutes. It's approximately 19 kilometres away.

  • Travelling to the centre on public transport takes about 40 minutes.

When to fly to Singapore Changi Airport (SIN)

  • June is the most popular month for flights from Portland Airport to Singapore Changi Airport. To escape the crowds, go to Singapore in March.

  • The warmest month in Singapore is May, with temperatures ranging between 25ºC and 31ºC. Book your flights from Portland Airport to Singapore Changi Airport in this month if this is the type of weather you like.

  • If you want to travel in cooler conditions, search for a cheap ticket from PDX to SIN in January. Average temperatures are between 24ºC and 30ºC then.

More travel options

Plan the rest of your trip from Portland to Singapore

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.