Which layover airport offers the lowest fares from Portland to Singapore?

Flights via Vancouver (YVR) offer the lowest average round-trip price of $793.

What airlines fly to Singapore?

Air Canada, United Airlines and Singapore Airlines are the top three most popular airlines that fly to Singapore from Portland according to our data. Air Canada is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 5 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Portland to Singapore?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 20h 20m.

Which layover airport has the shortest connection time from Portland to Singapore?

San Francisco (SFO) has the shortest average layover time for this route: 2h 00m.

Which airport is the most popular layover for flights between Portland and Singapore?

Vancouver (YVR) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Portland to Singapore Changi?

Air Canada is the most popular carrier operating from Portland to Singapore Changi

When did momondo last update prices for flights from Portland Airport to Singapore Changi Airport?

Prices for flights from Portland Airport to Singapore Changi Airport were last updated today.

How many operators does momondo search for flights from Portland Airport to Singapore Changi Airport?

As of January 2026, there are 5 operators available to choose from for flights from Portland Airport to Singapore Changi Airport.

How old do you have to be to fly from Portland Airport to Singapore Changi Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Singapore Changi Airport.

What documentation or ID do you need to fly to Singapore Changi Airport?

The travel and health documents required for your trip to Singapore Changi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Singapore Changi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$427 Cheap Flights from Portland to Singapore in 2026

Q: What is the typical price of a round-trip flight between Portland and Singapore?

Prices are currently typical for flights on this route. Typical prices usually range from $767 to $978. The lowest price recently found on this route was $798.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to Singapore

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:15 pm - 7:00 am

PDX

SIN

23h 45m

1 stop

8:50 am - 9:15 am

SIN

PDX

16h 25m

1 stop

$798Air Canada

Thu, Feb 5 - Thu, Feb 19

7:05 am - 7:10 pm

PDX

SIN

21h 05m

1 stop

9:15 am - 1:47 pm

SIN

PDX

19h 32m

1 stop

$809Singapore Airlines

Wed, Apr 15 - Wed, Apr 22

7:05 pm - 7:00 am

PDX

SIN

19h 55m

1 stop

11:10 pm - 2:40 pm

SIN

PDX

31h 30m

2 stops

$816Air Canada

Thu, Feb 5 - Thu, Feb 19

7:05 pm - 7:00 am

PDX

SIN

19h 55m

1 stop

8:50 am - 2:40 pm

SIN

PDX

21h 50m

1 stop

$832Air Canada

Wed, Feb 4 - Tue, Feb 17

7:05 am - 7:10 pm

PDX

SIN

21h 05m

1 stop

9:00 am - 12:35 pm

SIN

PDX

18h 35m

1 stop

$835Singapore Airlines

Tue, Apr 7 - Sun, Apr 19

9:50 am - 12:55 am

PDX

SIN

23h 05m

2 stops

8:50 am - 9:15 am

SIN

PDX

16h 25m

1 stop

$845Air Canada

Wed, Feb 4 - Tue, Feb 17

3:15 pm - 11:15 am

PDX

SIN

28h 00m

2 stops

6:35 am - 6:30 pm

SIN

PDX

27h 55m

2 stops

$847Air Canada

Tue, Feb 17 - Tue, Mar 3

7:05 pm - 7:00 am

PDX

SIN

20h 55m

1 stop

7:00 am - 9:15 am

SIN

PDX

17h 15m

1 stop

$850Air Canada

Thu, Mar 26 - Sat, Apr 18

3:15 pm - 11:15 am

PDX

SIN

29h 00m

2 stops

7:00 am - 2:40 pm

SIN

PDX

22h 40m

1 stop

$852Air Canada

Thu, Mar 26 - Sat, Apr 18

9:50 am - 7:00 am

PDX

SIN

30h 10m

1 stop

7:00 am - 9:15 am

SIN

PDX

17h 15m

1 stop

$869Air Canada

Thu, Mar 26 - Sat, Apr 18

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets

Air Canada

Feb 5

PDX3:15 pmPortland

23h 45m

1 stop

SIN7:00 amSingapore Changi

Feb 19

SIN8:50 amSingapore Changi

16h 25m

1 stop

PDX9:15 amPortland

$798

Air Canada

Feb 5

PDX7:05 pmPortland

19h 55m

1 stop

SIN7:00 amSingapore Changi

Feb 19

SIN11:10 pmSingapore Changi

31h 30m

2 stops

PDX2:40 pmPortland

$816

Air Canada

Feb 4

PDX7:05 pmPortland

19h 55m

1 stop

SIN7:00 amSingapore Changi

Feb 17

SIN8:50 amSingapore Changi

21h 50m

1 stop

PDX2:40 pmPortland

$832

STARLUX Airlines flights from Portland to Singapore

Our best STARLUX Airlines deals on Portland to Singapore flight tickets

STARLUX Airlines

Apr 7

PDX7:27 pmPortland

26h 13m

2 stops

SIN12:40 pmSingapore Changi

Apr 19

SIN2:00 pmSingapore Changi

22h 38m

2 stops

PDX9:38 pmPortland

$937

STARLUX Airlines

Apr 6

PDX5:45 pmPortland

27h 55m

2 stops

SIN12:40 pmSingapore Changi

Apr 19

SIN2:00 pmSingapore Changi

22h 38m

2 stops

PDX9:38 pmPortland

$998

STARLUX Airlines

Apr 13

PDX7:27 pmPortland

26h 13m

2 stops

SIN12:40 pmSingapore Changi

Apr 16

SIN2:00 pmSingapore Changi

22h 38m

2 stops

PDX9:38 pmPortland

$1,023

Fly from

Fly to

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 2/5

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Thu 2/19

8:50 am-9:15 am

1 stop16h 25m

$798

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/15

7:05 am-7:10 pm

1 stop21h 05m

Singapore Changi

Wed 4/22

9:15 am-1:47 pm

1 stop19h 32m

$809

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 2/5

7:05 pm-7:00 am

1 stop19h 55m

Singapore Changi

Thu 2/19

11:10 pm-2:40 pm

2 stops31h 30m

$816

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2/4

7:05 pm-7:00 am

1 stop19h 55m

Singapore Changi

Tue 2/17

8:50 am-2:40 pm

1 stop21h 50m

$832

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/7

7:05 am-7:10 pm

1 stop21h 05m

Singapore Changi

Sun 4/19

9:00 am-12:35 pm

1 stop18h 35m

$835

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2/4

9:50 am-12:55 am

2 stops23h 05m

Singapore Changi

Tue 2/17

8:50 am-9:15 am

1 stop16h 25m

$845

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 2/17

3:15 pm-11:15 am

2 stops28h 00m

Singapore Changi

Tue 3/3

6:35 am-6:30 pm

2 stops27h 55m

$847

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/26

7:05 pm-7:00 am

1 stop20h 55m

Singapore Changi

Sat 4/18

7:00 am-9:15 am

1 stop17h 15m

$850

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/26

3:15 pm-11:15 am

2 stops29h 00m

Singapore Changi

Sat 4/18

7:00 am-2:40 pm

1 stop22h 40m

$852

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/26

9:50 am-7:00 am

1 stop30h 10m

Singapore Changi

Sat 4/18

7:00 am-9:15 am

1 stop17h 15m

$869

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Portland and Singapore?

What is the cheapest month to fly to Singapore?

The month of September is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $753. If you aren’t able to travel to Singapore during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $853.

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $993 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Portland for as low as $798 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 1% on your flight if you consider stops on a Portland to Singapore flight.

How have Portland to Singapore flight prices changed over time?

As of January 2026, prices for Portland to Singapore flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Singapore according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Singapore (PDX to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Singapore

Fastest flight time	21h 00m
Direct flights	None

The fastest flight from Portland to Singapore takes 21h 00m

There are no direct flights from Portland to Singapore. There are no popular flight routes from Portland to Singapore.

Search flight deals

How far is Portland to Singapore Changi by plane?
The straight-line distance from Portland to Singapore Changi is 8130.5 mi. In terms of flight time, this usually takes a little over 21h 00m.
When did momondo last update prices for flights from Portland Airport to Singapore Changi Airport?
Prices for flights from Portland Airport to Singapore Changi Airport were last updated today.
How many operators does momondo search for flights from Portland Airport to Singapore Changi Airport?
As of January 2026, there are 5 operators available to choose from for flights from Portland Airport to Singapore Changi Airport.
How old do you have to be to fly from Portland Airport to Singapore Changi Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Singapore Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The travel and health documents required for your trip to Singapore Changi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Singapore Changi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland to Singapore?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Singapore is Air Canada (44% of total bookings). The next most popular airlines are United Airlines (28%), Singapore Airlines (17%), and Korean Air (7%).

Best airlines flying from Portland to Singapore

Compare and see reviews for airlines that fly from Portland to Singapore with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $694	Free Cancellation	Rating 7.1 10,618 reviews	Search Air Canada flights
Singapore Airlines	PriceFrom $789	Free Cancellation	Rating 8.1 1,431 reviews	Search Singapore Airlines flights
Korean Air	PriceFrom $792	Free Cancellation	Rating 8.4 1,187 reviews	Search Korean Air flights
Delta	PriceFrom $800	Free Cancellation	Rating 7.9 8,039 reviews	Search Delta flights
United Airlines	PriceFrom $869	Free Cancellation	Rating 7.4 9,149 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Singapore?

Finding the right flight to Singapore from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Singapore quick and easy, saving you time and money.

Can I find flights from Portland to Singapore with flexible booking policies on momondo?

Flights from Portland to Singapore with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Singapore?

Once you have performed a search for Portland to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Singapore right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Singapore, momondo offers a useful price alert feature which will track prices for flights to Singapore from Portland and alert you when they change.

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Wed 2/11

Wed 2/18

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Cheap flights from Portland to Singapore from $427

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Singapore departing on 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets

STARLUX Airlines flights from Portland to Singapore

Our best STARLUX Airlines deals on Portland to Singapore flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Singapore that are best for you.

See travel insights to Singapore from

How to get the cheapest flight ticket from Portland to Singapore

What is the typical price of a round-trip flight between Portland and Singapore?

What is the cheapest month to fly to Singapore?

How far in advance should I book a flight to Singapore?

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 1% on your flight if you consider stops on a Portland to Singapore flight.

How have Portland to Singapore flight prices changed over time?

As of January 2026, prices for Portland to Singapore flights are approximately 3% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Portland to Singapore Changi?

Air Canada is the most popular carrier operating from Portland to Singapore Changi

What airlines fly to Singapore?

Which airport is the most popular layover for flights between Portland and Singapore?

Vancouver (YVR) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Portland to Singapore?

Flights via Vancouver (YVR) offer the lowest average round-trip price of $793.

Which layover airport has the shortest travel time from Portland to Singapore?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 20h 20m.

Which layover airport has the shortest connection time from Portland to Singapore?

San Francisco (SFO) has the shortest average layover time for this route: 2h 00m.

When to book flights from Portland to Singapore

Cheap Portland to Singapore (PDX to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Singapore

Fastest flight time

Direct flights

How far is Portland to Singapore Changi by plane?

When did momondo last update prices for flights from Portland Airport to Singapore Changi Airport?

How many operators does momondo search for flights from Portland Airport to Singapore Changi Airport?

How old do you have to be to fly from Portland Airport to Singapore Changi Airport?

What documentation or ID do you need to fly to Singapore Changi Airport?

What is the most popular airline from Portland to Singapore?

Best airlines flying from Portland to Singapore

Compare and see reviews for airlines that fly from Portland to Singapore with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Singapore?

Can I find flights from Portland to Singapore with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Singapore?

I’m not ready to book a flight from Portland to Singapore right now. Can momondo alert me if prices change?

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo