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

Air Canada, Singapore Airlines, and Philippine Airlines are the most popular carriers operating from Portland to Singapore Changi

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

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 20h 49m.

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

Flights via Vancouver (YVR) offer the lowest average round-trip price of $790.

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

San Francisco (SFO) has the shortest average layover time for this route: 3h 22m.

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

San Francisco (SFO) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

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 43% 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.

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 September 2025, 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.

$400 Cheap Flights from Portland to Singapore in 2025/26

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 $727 to $1,063. The lowest price recently found on this route was $735.

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Cheap round-trip flights

3:15 pm - 7:00 amPDX-SIN

24h 45m1 stop

8:50 am - 6:30 pmSIN-PDX

25h 40m1 stop

$735Air Canada

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Thu, Oct 30 - Thu, Nov 6

7:00 pm - 7:00 amPDX-SIN

21h 00m1 stop

11:10 pm - 2:45 pmSIN-PDX

31h 35m2 stops

$742Air Canada

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Wed, Oct 29 - Wed, Nov 5

3:54 pm - 7:00 amPDX-SIN

24h 06m2 stops

8:50 am - 9:15 amSIN-PDX

16h 25m1 stop

$750

Find Deal

Thu, Oct 30 - Thu, Nov 6

3:54 pm - 7:00 amPDX-SIN

24h 06m2 stops

11:10 pm - 2:45 pmSIN-PDX

31h 35m2 stops

$757

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Wed, Oct 29 - Wed, Nov 5

9:17 am - 12:10 amPDX-SIN

23h 53m2 stops

1:35 am - 12:49 pmSIN-PDX

27h 14m2 stops

$844Korean Air

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Wed, Oct 29 - Tue, Nov 4

6:00 am - 12:10 amPDX-SIN

27h 10m2 stops

1:35 am - 12:49 pmSIN-PDX

27h 14m2 stops

$847Korean Air

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Thu, Oct 30 - Wed, Nov 5

7:00 am - 7:10 pmPDX-SIN

21h 10m1 stop

9:15 am - 4:54 pmSIN-PDX

22h 39m1 stop

$930Singapore Airlines

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Wed, Oct 8 - Wed, Oct 22

9:30 pm - 5:45 pmPDX-SIN

28h 15m1 stop

7:00 pm - 11:59 pmSIN-PDX

20h 59m1 stop

$935Singapore Airlines

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Mon, Feb 16 - Sun, Mar 1

7:38 pm - 8:00 amPDX-SIN

20h 22m1 stop

10:10 am - 10:51 pmSIN-PDX

28h 41m1 stop

$1,075United Airlines

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Tue, Nov 4 - Sat, Nov 15

3:50 pm - 6:15 amPDX-SIN

23h 25m1 stop

8:45 am - 6:39 pmSIN-PDX

24h 54m1 stop

$1,125United Airlines

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Sat, Oct 4 - Sat, Oct 11

Japan Airlines flights from Portland to Singapore

Our best Japan Airlines deals on Portland to Singapore flight tickets

Japan Airlines

Sep 28

PDX8:31 amPortland

30h 39m

2 stops

SIN6:10 amSingapore Changi

Sep 30

SIN9:50 pmSingapore Changi

34h 00m

2 stops

PDX4:50 pmPortland

$887

Find similar

Japan Airlines

Sep 28

PDX8:31 amPortland

30h 39m

2 stops

SIN6:10 amSingapore Changi

Sep 30

SIN9:50 pmSingapore Changi

34h 00m

2 stops

PDX4:50 pmPortland

$1,034

Find similar

China Airlines flights from Portland to Singapore

Our best China Airlines deals on Portland to Singapore flight tickets

China Airlines

Jan 9

PDX7:05 amPortland

38h 00m

3 stops

SIN1:05 pmSingapore Changi

Feb 11

SIN2:25 pmSingapore Changi

35h 22m

2 stops

PDX9:47 amPortland

$1,018

Find similar

China Airlines

Feb 16

PDX5:30 pmPortland

39h 10m

2 stops

SIN12:40 amSingapore Changi

Feb 28

SIN2:00 amSingapore Changi

44h 18m

2 stops

PDX6:18 amPortland

$1,022

Find similar

China Airlines

Oct 8

PDX2:30 pmPortland

43h 05m

2 stops

SIN12:35 amSingapore Changi

Oct 22

SIN1:45 pmSingapore Changi

35h 02m

2 stops

PDX9:47 amPortland

$1,045

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/30

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Thu 11/6

8:50 am-6:30 pm

1 stop25h 40m

$735

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/29

7:00 pm-7:00 am

1 stop21h 00m

Singapore Changi

Wed 11/5

11:10 pm-2:45 pm

2 stops31h 35m

$742

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/30

3:54 pm-7:00 am

2 stops24h 06m

Singapore Changi

Thu 11/6

8:50 am-9:15 am

1 stop16h 25m

$750

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/29

3:54 pm-7:00 am

2 stops24h 06m

Singapore Changi

Wed 11/5

11:10 pm-2:45 pm

2 stops31h 35m

$757

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/29

9:17 am-12:10 am

2 stops23h 53m

Singapore Changi

Tue 11/4

1:35 am-12:49 pm

2 stops27h 14m

$844

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/30

6:00 am-12:10 am

2 stops27h 10m

Singapore Changi

Wed 11/5

1:35 am-12:49 pm

2 stops27h 14m

$847

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/8

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Wed 10/22

9:15 am-4:54 pm

1 stop22h 39m

$930

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/16

9:30 pm-5:45 pm

1 stop28h 15m

Singapore Changi

Sun 3/1

7:00 pm-11:59 pm

1 stop20h 59m

$935

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/4

7:38 pm-8:00 am

1 stop20h 22m

Singapore Changi

Sat 11/15

10:10 am-10:51 pm

1 stop28h 41m

$1,075

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 10/4

3:50 pm-6:15 am

1 stop23h 25m

Singapore Changi

Sat 10/11

8:45 am-6:39 pm

1 stop24h 54m

$1,125

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 $880.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Portland to Singapore is on a Tuesday when prices can be found for as low as $1,256. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,673.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Portland to Singapore when you can find flight prices for as low as $1,121. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,334 on average. Flights to Singapore from Portland in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $1,019 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 $774 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 6% 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 September 2025, prices for Portland to Singapore flights are approximately 20% cheaper 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

Direct flights	None

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

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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 19h 55m.
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 September 2025, 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 (41% of total bookings). The next most popular airlines are United Airlines (33%), Singapore Airlines (15%), 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 10,000 reviews	Search Air Canada flights
Delta	PriceFrom $800	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
Korean Air	PriceFrom $808	Free Cancellation	Rating 8.4 1,139 reviews	Search Korean Air flights
United Airlines	PriceFrom $868	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $891	Free Cancellation	Rating 8.1 1,365 reviews	Search Singapore 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.

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Cheap flights from Portland to Singapore from $400

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 2/23. 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

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Filter for what you want

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Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

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Japan Airlines flights from Portland to Singapore

Our best Japan Airlines deals on Portland to Singapore flight tickets

China Airlines flights from Portland to Singapore

Our best China Airlines deals on Portland to Singapore flight tickets

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

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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

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

What is the cheapest month to fly to Singapore?

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Portland to Singapore is on a Tuesday when prices can be found for as low as $1,256. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,673.

What is the cheapest time of day to depart on your flight 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 6% 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 September 2025, prices for Portland to Singapore flights are approximately 20% cheaper when compared to flights at the same time last year.

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

Air Canada, Singapore Airlines, and Philippine Airlines are the most popular carriers operating from Portland to Singapore Changi

What airlines fly to Singapore?

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

San Francisco (SFO) was the most common stop: 57% 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 $790.

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

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 20h 49m.

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

San Francisco (SFO) has the shortest average layover time for this route: 3h 22m.

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

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