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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

Book the best Singapore Changi fare with no extra fees

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 ج.م.‏ 73,022. Find the lowest prices on one-way and return tickets right here.
Singapore.ج.م.‏ 29,877 per passenger.Departing Wed, 3 Feb.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Wed, 3 Feb, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 29,877, select.
Singapore.ج.م.‏ 30,358 per passenger.Departing Mon, 21 Sep.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Mon, 21 Sep, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 30,358, select.
Singapore.ج.م.‏ 30,377 per passenger.Departing Wed, 21 Oct.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Wed, 21 Oct, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 30,377, select.
Singapore.ج.م.‏ 31,678 per passenger.Departing Fri, 21 Aug.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Fri, 21 Aug, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 31,678, select.
Singapore.ج.م.‏ 35,222 per passenger.Departing Tue, 26 May.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Tue, 26 May, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 35,222, select.
Singapore.ج.م.‏ 35,240 per passenger.Departing Wed, 3 Jun.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Wed, 3 Jun, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 35,240, select.
Singapore.ج.م.‏ 37,053 per passenger.Departing Wed, 29 Jul.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Portland on Wed, 29 Jul, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 37,053, select.
Singapore.ج.م.‏ 83,317 per passenger.Departing Mon, 28 Dec.One-way flight with Air France.Outbound indirect flight with Air France, departs from Portland on Mon, 28 Dec, arriving in Singapore Changi.Price includes taxes and charges.From ج.م.‏ 83,317, 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 February.
May
from ج.م.‏ 35,222
Jun
from ج.م.‏ 35,240
Jul
from ج.م.‏ 37,053
Aug
from ج.م.‏ 31,678
Sep
from ج.م.‏ 30,358
Oct
from ج.م.‏ 30,377
Nov
Find prices
Dec
from ج.م.‏ 83,317
Jan
Find prices
Feb
from ج.م.‏ 29,877
Mar
Find prices
Apr
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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 ج.م.‏ 29,920
Search flights

Portland to Singapore: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 29,877
Cheapest month to flyFebruary

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 ج.م.‏ 55,880. 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 ج.م.‏ 55,880.
As of May 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 Saturday, 30 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.
Currently, Alaska Airlines offers the cheapest flight tickets to Singapore Changi.

Travelling from Portland International Airport (PDX) to Changi International Airport (SIN): what you need to know

  • Singapore is 15 hours ahead of Portland and observes the UTC+8 timezone.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your PDX to SIN flight.

  • During popular months such as July, you'll want to get to the airport well in advance. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're travelling during a peak period in general.

  • Consider adding a stopover when booking your ticket from Portland International Airport to Changi International Airport. Simply deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Check out these options between PDX and SIN:

    • San Francisco International Airport

    • Los Angeles International Airport

    • Vancouver International Airport

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

  • At the moment, ج.م.‏ 29,877 is the lowest price we've found for a one-way Portland International Airport to Changi International Airport flight. The best price for a return ticket is ج.م.‏ 55,962. Keep in mind that fares may change due to demand at the time of booking.

  • To find cheap tickets from PDX to SIN, book ahead. Airlines typically offer their best fares when flights are first made available.

  • If you can be flexible with your trip dates, try using the 'Whole month' tool. It'll find the lowest price across the month when looking for a flight from Portland International Airport to Changi International Airport.

  • Spend less time searching for cheap flights from PDX to SIN by creating a Price Alert. We'll send you an email or push notification on the app when fares go down.

  • Tailor your trip with filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Portland International Airport to Changi International Airport.

Handy information about Portland International Airport (PDX)

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

  • 83.65% of flights leaving Portland International Airport touch down at their destination on schedule. Given its strong performance rating, delays are unlikely when taking off from PDX.

  • Central Portland to Portland International Airport is around 19 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, catching a cab or ride-sharing.

  • Planning to catch public transport? Expect a trip time of around 45 minutes.

  • Need a convenient hotel close to PDX? If you've booked an early flight from Portland International Airport to Changi International Airport, these accommodation options will have you sleeping moments from your departure lounge:

Arriving at Changi International Airport (SIN)

Getting from Changi International Airport (SIN) to central Singapore

  • From Changi International Airport, Singapore is approximately 21 kilometres away. It takes around 20 minutes to drive to the centre.

  • If you're travelling by public transport, expect a journey of around 1 hour.

When to fly to Changi International Airport (SIN)

  • April is the busiest month for flights from Portland International Airport to Changi International Airport. For smaller crowds, go to Singapore in February.

  • When booking your flight from Portland International Airport to Changi International Airport, consider the kind of weather you enjoy. May is the warmest month in Singapore, with temperatures ranging from 25ºC to 31ºC.

  • Look for cheap tickets from PDX to SIN in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 24ºC and 30ºC on average.

Plan the rest of your trip from Portland to Singapore

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.