Cheap flights from Portland to Singapore Changi

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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 round-trip flight from Portland Airport to Singapore Changi Airport? If you want to travel next month, round-trip fares start from $971. Find the lowest prices on one-way and round-trip tickets right here.

Singapore.$882 per passenger.Departing Thu, Nov 19, returning Thu, Nov 26.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Thu, Nov 19, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Thu, Nov 26, arriving in Portland.Price includes taxes and charges.From $882, select.

Singapore.$884 per passenger.Departing Thu, Sep 24, returning Thu, Oct 8.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Thu, Sep 24, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Thu, Oct 8, arriving in Portland.Price includes taxes and charges.From $884, select.

Singapore.$946 per passenger.Departing Fri, Nov 27, returning Tue, Dec 8.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Fri, Nov 27, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Tue, Dec 8, arriving in Portland.Price includes taxes and charges.From $946, select.

Singapore.$971 per passenger.Departing Thu, Oct 22, returning Thu, Oct 29.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Thu, Oct 22, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Thu, Oct 29, arriving in Portland.Price includes taxes and charges.From $971, select.

Singapore.$973 per passenger.Departing Tue, Jan 5, returning Sun, Jan 17.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Tue, Jan 5, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Sun, Jan 17, arriving in Portland.Price includes taxes and charges.From $973, select.

Singapore.$984 per passenger.Departing Wed, Oct 28, returning Wed, Nov 4.Round-trip flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departing from Portland on Wed, Oct 28, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departing from Singapore Changi on Wed, Nov 4, arriving in Portland.Price includes taxes and charges.From $984, select.

Singapore.$984 per passenger.Departing Tue, Nov 17, returning Fri, Jan 1.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Tue, Nov 17, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Fri, Jan 1, arriving in Portland.Price includes taxes and charges.From $984, select.

Singapore.$1,018 per passenger.Departing Wed, Jan 27, returning Wed, Feb 10.Round-trip flight with Alaska Airlines and Cathay Pacific.Outbound indirect flight with Alaska Airlines, departing from Portland on Wed, Jan 27, arriving in Singapore Changi.Inbound indirect flight with Cathay Pacific, departing from Singapore Changi on Wed, Feb 10, arriving in Portland.Price includes taxes and charges.From $1,018, select.

Singapore.$1,049 per passenger.Departing Tue, Mar 9, returning Tue, Mar 16.Round-trip flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departing from Portland on Tue, Mar 9, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departing from Singapore Changi on Tue, Mar 16, arriving in Portland.Price includes taxes and charges.From $1,049, select.

Singapore.$1,050 per passenger.Departing Wed, Feb 3, returning Thu, Feb 11.Round-trip flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departing from Portland on Wed, Feb 3, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departing from Singapore Changi on Thu, Feb 11, arriving in Portland.Price includes taxes and charges.From $1,050, select.

Singapore.$1,067 per passenger.Departing Thu, Dec 3, returning Thu, Dec 10.Round-trip flight with Alaska Airlines and Vietnam Airlines.Outbound indirect flight with Alaska Airlines, departing from Portland on Thu, Dec 3, arriving in Singapore Changi.Inbound indirect flight with Vietnam Airlines, departing from Singapore Changi on Thu, Dec 10, arriving in Portland.Price includes taxes and charges.From $1,067, select.

Singapore.$1,092 per passenger.Departing Thu, Apr 1, returning Sat, Apr 10.Round-trip flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departing from Portland on Thu, Apr 1, arriving in Singapore Changi.Inbound indirect flight with Qatar Airways, departing from Singapore Changi on Sat, Apr 10, arriving in Portland.Price includes taxes and charges.From $1,092, select.

Singapore.$1,103 per passenger.Departing Mon, Nov 23, returning Mon, Feb 15.Round-trip flight with Alaska Airlines and Cathay Pacific.Outbound indirect flight with Alaska Airlines, departing from Portland on Mon, Nov 23, arriving in Singapore Changi.Inbound indirect flight with Cathay Pacific, departing from Singapore Changi on Mon, Feb 15, arriving in Portland.Price includes taxes and charges.From $1,103, select.

Singapore.$1,290 per passenger.Departing Thu, Dec 31, returning Sat, Jan 9.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Thu, Dec 31, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Sat, Jan 9, arriving in Portland.Price includes taxes and charges.From $1,290, select.

Singapore.$1,510 per passenger.Departing Tue, Aug 24, returning Sat, Aug 28.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Portland on Tue, Aug 24, arriving in Singapore Changi.Inbound indirect flight with Air Canada, departing from Singapore Changi on Sat, Aug 28, arriving in Portland.Price includes taxes and charges.From $1,510, 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.

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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

from $1,978

Search flights

Singapore Changi

18km from central Singapore

Cheapest

from $882

Search flights

Portland to Singapore: Flight information

The things to know before you go.

Cheapest flight found	$882
Cheapest month to fly	November

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

How much are round-trip flights from Portland to Singapore Changi?

The best price we found for a round-trip flight from Portland to Singapore Changi is $882. 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.

Which airlines fly direct from Portland to Singapore Changi?

Currently, there are no airlines that fly direct from Portland to Singapore Changi. But we found flights with one or more stops from $882.

How many flights are there a week from Portland to Singapore Changi?

There are no flights flying from Portland to Singapore Changi, as of September 2026.

When is the cheapest time to fly from Portland to Singapore Changi?

The cheapest month to fly from Portland to Singapore Changi is usually November.

Which upcoming date is cheapest to fly from Portland Airport to Singapore Changi Airport on?

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 Thursday, November 19, 2026.

Can I get a direct flight from Portland Airport to Singapore Changi Airport?

No airlines currently offer direct flights between Portland Airport and Singapore Changi Airport. Most routes have one or more stops.

How can I find the best flight deal to Singapore Changi?

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.

When is the best time to book flights to Singapore?

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.

Which is the cheapest airline to fly with from Portland Airport to Singapore Changi?

Currently, Air Canada 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)

$397 is the lowest price for a one-way Portland Airport to Singapore Changi Airport flight. Return flights start from $882. 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 kilometers from the airport to the city center.
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.

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 (77ºF) and 31ºC (88ºF). 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 (75ºF) and 30ºC (86ºF) then.