Cheap Flights from Portland (PDX) to Singapore (SIN) from HK$3,624~

View HK$3,624 flight on Tue, 30 Sep 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Singapore Changi Airport (SIN)

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Find Cheap Flights from Portland (PDX) to Singapore (SIN)

Prices were available within the past 7 days and start at HK$3,624 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Portland (PDX) to Singapore (SIN)

October is typically the cheapest month to fly

From HK$5,817 - HK$9,833 per traveller.

Graph displaying average flight prices per month

Portland to Singapore route information
Origin airport
Portland Intl.
Destination airport
Changi
Distance
13005 km

Flights from Portland to Singapore

Book cheap flights from Portland (PDX) to Singapore (SIN) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Portland (PDX) to Singapore (SIN) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Portland (PDX) to Singapore (SIN) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Singapore flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Singapore and things to do in Singapore for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Singapore more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Singapore is HK$3,624 now!

 

Frequently asked questions

How much is a flight from PDX Airport to Changi Airport (SIN)?
The lowest price advertised for a round-trip journey between Portland Airport and Singapore Airport is . But you better act fast. This figure is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PDX Airport to Changi Airport?
The majority of flights can be canceled online, but each air carrier has its own terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from PDX Airport to Changi Airport (SIN) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Portland Airport to Changi Airport (SIN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PDX to SIN?
Portland to Singapore is around 13,100 kilometers, so get ready to spend quite a while in the air. Don't forget to pack all the essentials, from your earplugs to your eye mask. Toss in a few snacks to munch on throughout your trip too.
Which airlines fly direct from PDX Airport to Changi Airport (SIN)?
You won't find any airlines flying directly between Portland Intl. Airport (PDX) and Changi Airport, so be prepared to make at least one stop on your journey. A layover can be a good way to break up a trip!
Are Portland Intl. Airport (PDX) to Changi Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally pick up a bargain, with some super cheap airfares from Portland Intl. Airport (PDX) to SIN popping up a few weeks before the date of departure. If you'd rather plan ahead of time, Expedia compares and updates the best flight deals regularly — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines quote prices so far in advance.

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