What airlines fly to Singapore?

United Airlines, Air Canada and Singapore Airlines are the top three most popular airlines that fly to Singapore from Portland according to our data. United Airlines is the first choice among our users, with 42% 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.

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 14m.

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

Air Canada, United Airlines, and Delta 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 44m.

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

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

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 August 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.

$447 Cheap Flights from Portland to Singapore in 2025

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Cheap round-trip flights

3:25 pm - 7:05 amPDX-SIN

24h 40m1 stop

9:10 am - 2:46 pmSIN-PDX

20h 36m1 stop

$718Air Canada

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Tue, Sep 16 - Tue, Sep 30

3:15 pm - 7:00 amPDX-SIN

24h 45m1 stop

9:00 pm - 9:15 amSIN-PDX

28h 15m2 stops

$720Air Canada

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Tue, Oct 28 - Tue, Nov 11

7:15 am - 11:40 pmPDX-SIN

25h 25m2 stops

1:10 am - 6:51 pmSIN-PDX

32h 41m2 stops

$841Delta

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Thu, Sep 4 - Wed, Sep 24

6:20 am - 5:00 amPDX-SIN

31h 40m2 stops

1:10 am - 4:02 pmSIN-PDX

29h 52m2 stops

$847Korean Air

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Wed, Sep 17 - Mon, Sep 29

2:40 pm - 5:30 amPDX-SIN

22h 50m1 stop

9:00 am - 10:55 amSIN-PDX

17h 55m1 stop

$872Singapore Airlines

Find Deal

Fri, Feb 6 - Fri, Feb 27

9:10 am - 12:10 amPDX-SIN

23h 00m2 stops

1:30 am - 7:11 pmSIN-PDX

33h 41m2 stops

$891Delta

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Fri, Feb 6 - Thu, Feb 26

7:00 am - 7:10 pmPDX-SIN

21h 10m1 stop

9:15 am - 1:23 pmSIN-PDX

19h 08m1 stop

$942Singapore Airlines

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Wed, Oct 15 - Wed, Oct 29

5:07 pm - 5:00 amPDX-SIN

44h 53m2 stops

1:30 am - 1:19 pmSIN-PDX

27h 49m2 stops

$987Korean Air

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Sat, Nov 1 - Sat, Nov 15

7:35 pm - 6:15 amPDX-SIN

19h 40m1 stop

8:45 am - 10:45 pmSIN-PDX

29h 00m1 stop

$1,025United Airlines

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Wed, Oct 1 - Wed, Oct 8

10:50 am - 6:15 amPDX-SIN

28h 25m2 stops

10:10 am - 8:38 pmSIN-PDX

25h 28m1 stop

$1,029United Airlines

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Wed, Oct 15 - Wed, Oct 29

Delta flights from Portland to Singapore

Our best Delta deals on Portland to Singapore flight tickets

Delta

Sep 4

PDX7:15 amPortland

25h 25m

2 stops

SIN11:40 pmSingapore Changi

Sep 24

SIN1:10 amSingapore Changi

32h 41m

2 stops

PDX6:51 pmPortland

$841

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Delta

Feb 6

PDX9:10 amPortland

23h 00m

2 stops

SIN12:10 amSingapore Changi

Feb 26

SIN1:30 amSingapore Changi

33h 41m

2 stops

PDX7:11 pmPortland

$891

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Delta

Oct 17

PDX5:30 amPortland

32h 30m

2 stops

SIN5:00 amSingapore Changi

Nov 17

SIN11:00 amSingapore Changi

28h 51m

2 stops

PDX11:51 pmPortland

$1,083

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Korean Air flights from Portland to Singapore

Our best Korean Air deals on Portland to Singapore flight tickets

Korean Air

Sep 17

PDX6:20 amPortland

31h 40m

2 stops

SIN5:00 amSingapore Changi

Sep 29

SIN1:10 amSingapore Changi

29h 52m

2 stops

PDX4:02 pmPortland

$847

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Korean Air

Aug 24

PDX11:14 amPortland

21h 26m

2 stops

SIN11:40 pmSingapore Changi

Aug 31

SIN7:30 amSingapore Changi

22h 08m

2 stops

PDX2:38 pmPortland

$897

Find similar

Korean Air

Nov 1

PDX5:07 pmPortland

44h 53m

2 stops

SIN5:00 amSingapore Changi

Nov 15

SIN1:30 amSingapore Changi

27h 49m

2 stops

PDX1:19 pmPortland

$987

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Fly from

Fly to

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/16

3:25 pm-7:05 am

1 stop24h 40m

Singapore Changi

Tue 9/30

9:10 am-2:46 pm

1 stop20h 36m

$718

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 10/28

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Tue 11/11

9:00 pm-9:15 am

2 stops28h 15m

$720

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 9/4

7:15 am-11:40 pm

2 stops25h 25m

Singapore Changi

Wed 9/24

1:10 am-6:51 pm

2 stops32h 41m

$841

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 9/17

6:20 am-5:00 am

2 stops31h 40m

Singapore Changi

Mon 9/29

1:10 am-4:02 pm

2 stops29h 52m

$847

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 2/6

2:40 pm-5:30 am

1 stop22h 50m

Singapore Changi

Fri 2/27

9:00 am-10:55 am

1 stop17h 55m

$872

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 2/6

9:10 am-12:10 am

2 stops23h 00m

Singapore Changi

Thu 2/26

1:30 am-7:11 pm

2 stops33h 41m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/15

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Wed 10/29

9:15 am-1:23 pm

1 stop19h 08m

$942

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 11/1

5:07 pm-5:00 am

2 stops44h 53m

Singapore Changi

Sat 11/15

1:30 am-1:19 pm

2 stops27h 49m

$987

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/1

7:35 pm-6:15 am

1 stop19h 40m

Singapore Changi

Wed 10/8

8:45 am-10:45 pm

1 stop29h 00m

$1,025

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/15

10:50 am-6:15 am

2 stops28h 25m

Singapore Changi

Wed 10/29

10:10 am-8:38 pm

1 stop25h 28m

$1,029

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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 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 November is also cheap. Prices for this month can be found on momondo for an average of $865.

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 $1,038 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 24% 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 August 2025, prices for Portland to Singapore flights are approximately 11% 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

Best Price Found	$447
Fastest flight time	19h 40m
Direct flights	None
Airports in Singapore	1 airport

The best one-way flight to Singapore from Portland in the past 72 hours is $447. The best round-trip flight deal from Portland to Singapore found on momondo in the last 72 hours is $718.

The fastest flight from Portland to Singapore takes 19h 40m

There are no direct flights from Portland to Singapore. Popular non-direct route for this connection is Portland Airport - Singapore Changi Airport.

There is 1 airport near Singapore: Singapore Changi (SIN)

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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 40m.
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 August 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 United Airlines (40% of total bookings). The next most popular airlines are Air Canada (36%), Singapore Airlines (14%), and Korean Air (6%).

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 9,977 reviews	Search Air Canada flights
United Airlines	PriceFrom $796	Free Cancellation	Rating 7.4 8,919 reviews	Search United Airlines flights
Delta	PriceFrom $800	Free Cancellation	Rating 8.0 7,986 reviews	Search Delta flights
Korean Air	PriceFrom $808	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights
Singapore Airlines	PriceFrom $911	Free Cancellation	Rating 8.1 1,347 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 $447

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 9/18. 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

Trusted and free

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Price Alerts

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Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

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Delta flights from Portland to Singapore

Our best Delta deals on Portland to Singapore flight tickets

Korean Air flights from Portland to Singapore

Our best Korean Air deals on Portland to Singapore flight tickets

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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 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 24% 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 August 2025, prices for Portland to Singapore flights are approximately 11% 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, United Airlines, and Delta 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: 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 $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 44m.

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 14m.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Singapore

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