S$435 Cheap Flights from Portland to Singapore

View S$435 flight on Wed, 9 Sept, 2026Opens in a new window

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

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Cheap Flights from Portland to Singapore (PDX-SIN)

Prices were available within the past 7 days and start at S$435 for one-way flights and S$1,156 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 23 Apr - Sun, 3 May
PDX
Portland
SIN
Singapore
S$1,156 Return, found 1 day ago
S$1,156
Return
found 1 day ago
Select Air Canada flight, departing Thu, 23 Apr from Portland to Singapore, returning Sun, 3 May, priced at S$1,156 found 1 day ago
Air Canada
Fri, 15 May - Tue, 19 May
PDX
Portland
SIN
Singapore
S$1,269 Return, found 5 days ago
S$1,269
Return
found 5 days ago
Select Air Canada flight, departing Fri, 15 May from Portland to Singapore, returning Tue, 19 May, priced at S$1,269 found 5 days ago
United
Mon, 6 Apr - Mon, 13 Apr
PDX
Portland
SIN
Singapore
S$1,324 Return, found 3 days ago
S$1,324
Return
found 3 days ago
Select United flight, departing Mon, 6 Apr from Portland to Singapore, returning Mon, 13 Apr, priced at S$1,324 found 3 days ago
Air Canada
Fri, 15 May - Tue, 19 May
PDX
Portland
SIN
Singapore
S$1,326 Return, found 5 days ago
S$1,326
Return
found 5 days ago
Select Air Canada flight, departing Fri, 15 May from Portland to Singapore, returning Tue, 19 May, priced at S$1,326 found 5 days ago
United
Mon, 16 Mar - Mon, 6 Apr
PDX
Portland
SIN
Singapore
S$1,327 Return, found 1 day ago
S$1,327
Return
found 1 day ago
Select United flight, departing Mon, 16 Mar from Portland to Singapore, returning Mon, 6 Apr, priced at S$1,327 found 1 day ago
All Nippon Airways
Wed, 22 Apr - Thu, 11 Jun
PDX
Portland
SIN
Singapore
S$1,328 Return, found 1 day ago
S$1,328
Return
found 1 day ago
Select All Nippon Airways flight, departing Wed, 22 Apr from Portland to Singapore, returning Thu, 11 Jun, priced at S$1,328 found 1 day ago
All Nippon Airways
Wed, 22 Apr - Thu, 11 Jun
PDX
Portland
SIN
Singapore
S$1,329 Return, found 1 day ago
S$1,329
Return
found 1 day ago
Select All Nippon Airways flight, departing Wed, 22 Apr from Portland to Singapore, returning Thu, 11 Jun, priced at S$1,329 found 1 day ago
All Nippon Airways
Thu, 23 Apr - Sun, 3 May
PDX
Portland
SIN
Singapore
S$1,336 Return, found 1 day ago
S$1,336
Return
found 1 day ago
Select All Nippon Airways flight, departing Thu, 23 Apr from Portland to Singapore, returning Sun, 3 May, priced at S$1,336 found 1 day ago
Alaska Airlines
Thu, 23 Apr - Sun, 3 May
PDX
Portland
SIN
Singapore
S$1,361 Return, found 1 day ago
S$1,361
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 23 Apr from Portland to Singapore, returning Sun, 3 May, priced at S$1,361 found 1 day ago
STARLUX Airlines
Wed, 22 Apr - Thu, 11 Jun
PDX
Portland
SIN
Singapore
S$1,414 Return, found 1 day ago
S$1,414
Return
found 1 day ago
Select STARLUX Airlines flight, departing Wed, 22 Apr from Portland to Singapore, returning Thu, 11 Jun, priced at S$1,414 found 1 day ago

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

November is typically the cheapest month to fly

From S$936 - S$1,424 per traveller.

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 S$1,156. 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 cancelled 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 kilometres, 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.

Travel information

Origin airport
Portland Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, Cathay Pacific, Delta, Japan Airlines, KLM, Korean Air, Lufthansa, Qatar Airways, United
Return price
S$1,156
Distance
13005 km

Book with confidence

Flights from Portland to Singapore

There are several airlines that operate frequent flights from Portland (PDX) to Singapore (SIN) including

The earliest flight leaves Portland Intl. Airport at 05:35 and arrives at Changi Airport at 00:05. The last flight of the day departs Portland at 19:56 and arrives at Singapore at 23:25.

The flight distance from Portland to Singapore is about 14424 km, the shortest flight is 19 hours 19 minutes with United Airlines.

Expedia lets you search across the largest number of airlines and Singapore flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Portland Singapore flight!

Browse through dozens of options and rest 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 to Singapore trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Singapore flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Portland to Singapore with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Flights from Portland to Singapore

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