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 24m.

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

Vancouver (YVR) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

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 51m.

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?

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 offers the lowest fares from Portland to Singapore?

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

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 December 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.

$411 Cheap Flights from Portland to Singapore in 2025/26

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Cheap round-trip flights

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7:05 pm - 2:30 pm

PDX

SIN

28h 25m2 stops

10:50 pm - 2:40 pm

SIN

PDX

30h 50m2 stops

$777Air Canada

Mon, Apr 6 - Mon, Apr 20

9:50 am - 11:45 am

PDX

SIN

33h 55m2 stops

8:50 am - 6:30 pm

SIN

PDX

25h 40m1 stop

$800Air Canada

Wed, Jan 28 - Sat, Feb 21

3:15 pm - 7:00 am

PDX

SIN

24h 45m1 stop

10:50 pm - 2:40 pm

SIN

PDX

30h 50m2 stops

$802Air Canada

Thu, Mar 19 - Mon, Apr 20

9:50 am - 7:00 am

PDX

SIN

29h 10m1 stop

8:50 am - 9:15 am

SIN

PDX

16h 25m1 stop

$803Air Canada

Wed, Jan 28 - Sat, Feb 21

7:05 pm - 2:50 pm

PDX

SIN

28h 45m2 stops

10:50 pm - 2:40 pm

SIN

PDX

30h 50m2 stops

$804Air Canada

Thu, Mar 19 - Mon, Apr 20

3:15 pm - 7:00 am

PDX

SIN

24h 45m1 stop

6:15 am - 6:30 pm

SIN

PDX

27h 15m2 stops

$807Air Canada

Thu, Mar 19 - Mon, Apr 20

3:15 pm - 11:15 am

PDX

SIN

29h 00m2 stops

6:15 am - 6:30 pm

SIN

PDX

27h 15m2 stops

$809Air Canada

Thu, Mar 19 - Mon, Apr 20

7:05 pm - 11:15 am

PDX

SIN

24h 10m2 stops

7:00 am - 9:15 am

SIN

PDX

17h 15m1 stop

$816Air Canada

Mon, Mar 2 - Tue, Mar 31

7:05 pm - 7:00 am

PDX

SIN

20h 55m1 stop

8:50 am - 11:04 pm

SIN

PDX

53h 14m2 stops

$820Air Canada

Tue, Mar 10 - Thu, Mar 19

3:15 pm - 2:50 pm

PDX

SIN

32h 35m2 stops

8:50 am - 11:04 pm

SIN

PDX

53h 14m2 stops

$821Air Canada

Tue, Mar 10 - Thu, Mar 19

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets

Air Canada

Apr 6

PDX7:05 pmPortland

28h 25m

2 stops

SIN2:30 pmSingapore Changi

Apr 20

SIN10:50 pmSingapore Changi

30h 50m

2 stops

PDX2:40 pmPortland

$777

Find similar

Air Canada

Jan 28

PDX9:50 amPortland

33h 55m

2 stops

SIN11:45 amSingapore Changi

Feb 21

SIN8:50 amSingapore Changi

25h 40m

1 stop

PDX6:30 pmPortland

$800

Find similar

Air Canada

Mar 19

PDX3:15 pmPortland

24h 45m

1 stop

SIN7:00 amSingapore Changi

Apr 20

SIN10:50 pmSingapore Changi

30h 50m

2 stops

PDX2:40 pmPortland

$802

Find similar

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets

United Airlines

Mar 2

PDX3:50 pmPortland

24h 10m

1 stop

SIN8:00 amSingapore Changi

Apr 1

SIN9:00 amSingapore Changi

24h 07m

1 stop

PDX6:07 pmPortland

$1,025

Find similar

United Airlines

Mar 1

PDX4:00 pmPortland

36h 15m

2 stops

SIN8:15 pmSingapore Changi

Apr 1

SIN8:40 pmSingapore Changi

19h 04m

1 stop

PDX12:44 amPortland

$1,029

Find similar

United Airlines

Jan 3

PDX2:45 pmPortland

37h 30m

2 stops

SIN8:15 pmSingapore Changi

Jan 28

SIN10:20 pmSingapore Changi

38h 52m

2 stops

PDX9:12 pmPortland

$1,043

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4/6

7:05 pm-2:30 pm

2 stops28h 25m

Singapore Changi

Mon 4/20

10:50 pm-2:40 pm

2 stops30h 50m

$777

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/28

9:50 am-11:45 am

2 stops33h 55m

Singapore Changi

Sat 2/21

8:50 am-6:30 pm

1 stop25h 40m

$800

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Mon 4/20

10:50 pm-2:40 pm

2 stops30h 50m

$802

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/28

9:50 am-7:00 am

1 stop29h 10m

Singapore Changi

Sat 2/21

8:50 am-9:15 am

1 stop16h 25m

$803

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

7:05 pm-2:50 pm

2 stops28h 45m

Singapore Changi

Mon 4/20

10:50 pm-2:40 pm

2 stops30h 50m

$804

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Mon 4/20

6:15 am-6:30 pm

2 stops27h 15m

$807

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

3:15 pm-11:15 am

2 stops29h 00m

Singapore Changi

Mon 4/20

6:15 am-6:30 pm

2 stops27h 15m

$809

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 3/2

7:05 pm-11:15 am

2 stops24h 10m

Singapore Changi

Tue 3/31

7:00 am-9:15 am

1 stop17h 15m

$816

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 3/10

7:05 pm-7:00 am

1 stop20h 55m

Singapore Changi

Thu 3/19

8:50 am-11:04 pm

2 stops53h 14m

$820

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 3/10

3:15 pm-2:50 pm

2 stops32h 35m

Singapore Changi

Thu 3/19

8:50 am-11:04 pm

2 stops53h 14m

$821

Flights are sorted by cheapest round-trip flights first.

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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

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 $749. 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 $875.

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 $995 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 December 2025, prices for Portland to Singapore flights are approximately 12% 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

Fastest flight time	22h 05m
Direct flights	None

The fastest flight from Portland to Singapore takes 22h 05m

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 22h 05m.
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 December 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 (43% of total bookings). The next most popular airlines are United Airlines (30%), Singapore Airlines (16%), 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 10,560 reviews	Search Air Canada flights
Singapore Airlines	PriceFrom $789	Free Cancellation	Rating 8.1 1,421 reviews	Search Singapore Airlines flights
Korean Air	PriceFrom $792	Free Cancellation	Rating 8.4 1,185 reviews	Search Korean Air flights
Delta	PriceFrom $800	Free Cancellation	Rating 7.9 8,012 reviews	Search Delta flights
United Airlines	PriceFrom $868	Free Cancellation	Rating 7.4 9,115 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.

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Cheap flights from Portland to Singapore from $397

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 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Portland to Singapore

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Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets

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Our best United Airlines deals on Portland to Singapore flight tickets

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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?

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 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 December 2025, prices for Portland to Singapore flights are approximately 12% 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 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: 56% 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 24m.

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 51m.

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