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

Air Canada, Qatar Airways, and ANA are the most popular carriers operating from Portland to Singapore Changi

What airlines fly to Singapore?

Singapore Airlines, Air Canada and United Airlines are the top three most popular airlines that fly to Singapore from Portland according to our data. Singapore Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 3 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 $936.

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 33m.

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

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 18h 30m.

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

San Francisco (SFO) was the most common stop: 38% 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 2026, there are 3 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.

$426 Cheap Flights from Portland to Singapore in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Singapore

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:15 pm - 7:00 amPDX Portland-SIN Singapore Changi

23h 45m1 stop Vancouver Intl

8:40 am - 9:26 amSIN Singapore Changi-PDX Portland

16h 46m1 stop Vancouver Intl

$895Air Canada

Tue, Nov 3 - Tue, Nov 17

7:10 pm - 7:00 amPDX Portland-SIN Singapore Changi

19h 50m1 stop Vancouver Intl

8:40 am - 6:31 pmSIN Singapore Changi-PDX Portland

25h 51m1 stop Vancouver Intl

$895Air Canada

Thu, Jan 21 - Thu, Feb 11

10:00 am - 7:00 amPDX Portland-SIN Singapore Changi

29h 00m1 stop Vancouver Intl

8:40 am - 9:26 amSIN Singapore Changi-PDX Portland

16h 46m1 stop Vancouver Intl

$895Air Canada

Thu, Jan 21 - Thu, Feb 11

7:04 am - 3:00 pmPDX Portland-SIN Singapore Changi

39h 56m2 stops San Francisco Shanghai Pu Dong

12:25 am - 11:18 pmSIN Singapore Changi-PDX Portland

38h 53m2 stops Shanghai Pu Dong Los Angeles

$977Multiple Airlines

Sat, Nov 7 - Fri, Nov 13

11:30 pm - 7:00 amPDX Portland-SIN Singapore Changi

39h 30m2 stops Chicago O'Hare Intl Vancouver Intl

8:40 am - 9:26 amSIN Singapore Changi-PDX Portland

16h 46m1 stop Vancouver Intl

$984Multiple Airlines

Sat, Nov 7 - Sat, Nov 14

11:30 pm - 7:00 amPDX Portland-SIN Singapore Changi

39h 30m2 stops Chicago O'Hare Intl Vancouver Intl

8:40 am - 2:37 pmSIN Singapore Changi-PDX Portland

21h 57m2 stops Vancouver Intl San Francisco

$995Multiple Airlines

Sat, Nov 7 - Sat, Nov 14

10:00 am - 4:55 amPDX Portland-SIN Singapore Changi

26h 55m2 stops Vancouver Intl Incheon Intl

8:40 am - 9:26 amSIN Singapore Changi-PDX Portland

16h 46m1 stop Vancouver Intl

$1,115Singapore Airlines

Sun, Nov 29 - Sun, Dec 13

7:18 am - 7:10 pmPDX Portland-SIN Singapore Changi

20h 52m1 stop San Francisco

9:05 am - 4:44 pmSIN Singapore Changi-PDX Portland

22h 39m1 stop San Francisco

$1,120Singapore Airlines

Mon, Oct 12 - Mon, Oct 26

1:03 pm - 6:15 amPDX Portland-SIN Singapore Changi

26h 12m1 stop San Francisco

8:45 am - 9:00 pmSIN Singapore Changi-PDX Portland

27h 15m1 stop San Francisco

$1,146United Airlines

Tue, Sep 29 - Mon, Oct 12

7:00 am - 6:35 pmPDX Portland-SIN Singapore Changi

20h 35m1 stop San Francisco

8:45 am - 6:31 pmSIN Singapore Changi-PDX Portland

24h 46m1 stop San Francisco

$1,146United Airlines

Fri, Sep 18 - Fri, Sep 25

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Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets

Qatar Airways

Feb 1

PDX7:30 amPortland

33h 15m

2 stops

SIN8:45 amSingapore Changi

Feb 14

SIN3:15 amSingapore Changi

33h 58m

2 stops

PDX9:13 pmPortland

$1,002

Qatar Airways

Oct 9

PDX6:09 amPortland

35h 41m

2 stops

SIN8:50 amSingapore Changi

Oct 15

SIN3:15 amSingapore Changi

34h 47m

2 stops

PDX11:02 pmPortland

$1,013

Qatar Airways

Sep 28

PDX1:59 pmPortland

27h 51m

2 stops

SIN8:50 amSingapore Changi

Oct 13

SIN3:15 amSingapore Changi

28h 35m

2 stops

PDX4:50 pmPortland

$1,020

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets

Air Canada

Nov 3

PDX3:15 pmPortland

23h 45m

1 stop

SIN7:00 amSingapore Changi

Nov 17

SIN8:40 amSingapore Changi

16h 46m

1 stop

PDX9:26 amPortland

$895

Air Canada

Nov 3

PDX5:35 amPortland

33h 25m

2 stops

SIN7:00 amSingapore Changi

Nov 17

SIN8:40 amSingapore Changi

28h 06m

1 stop

PDX8:46 pmPortland

$909

Air Canada

Nov 3

PDX5:35 amPortland

33h 25m

2 stops

SIN7:00 amSingapore Changi

Nov 17

SIN8:40 amSingapore Changi

28h 06m

1 stop

PDX8:46 pmPortland

$910

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 11/3

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Tue 11/17

8:40 am-9:26 am

1 stop16h 46m

$895

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 1/21

7:10 pm-7:00 am

1 stop19h 50m

Singapore Changi

Thu 2/11

8:40 am-6:31 pm

1 stop25h 51m

$895

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 1/21

10:00 am-7:00 am

1 stop29h 00m

Singapore Changi

Thu 2/11

8:40 am-9:26 am

1 stop16h 46m

$895

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sat 11/7

7:04 am-3:00 pm

2 stops39h 56m

Singapore Changi

Fri 11/13

12:25 am-11:18 pm

2 stops38h 53m

$977

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sat 11/7

11:30 pm-7:00 am

2 stops39h 30m

Singapore Changi

Sat 11/14

8:40 am-9:26 am

1 stop16h 46m

$984

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sat 11/7

11:30 pm-7:00 am

2 stops39h 30m

Singapore Changi

Sat 11/14

8:40 am-2:37 pm

2 stops21h 57m

$995

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 11/29

10:00 am-4:55 am

2 stops26h 55m

Singapore Changi

Sun 12/13

8:40 am-9:26 am

1 stop16h 46m

$1,115

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 10/12

7:18 am-7:10 pm

1 stop20h 52m

Singapore Changi

Mon 10/26

9:05 am-4:44 pm

1 stop22h 39m

$1,120

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 9/29

1:03 pm-6:15 am

1 stop26h 12m

Singapore Changi

Mon 10/12

8:45 am-9:00 pm

1 stop27h 15m

$1,146

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Fri 9/18

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Fri 9/25

8:45 am-6:31 pm

1 stop24h 46m

$1,146

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?

Prices are currently low for flights on this route.

Typical prices usually range from $970 to $1,152.
The lowest price recently found on this route was $895.

What is the cheapest month to fly to Singapore?

The month of January is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $891. If you aren’t able to travel to Singapore during the month of January, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $990.

How far in advance should I book a flight from Portland 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 $1,109 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 $894 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 2% on your flight if you consider stops on a Portland to Singapore flight.

How have Portland to Singapore flight prices changed over time?

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	$426
Fastest flight time	19h 50m
Direct flights	None

The best one-way flight to Singapore from Portland in the past 72 hours is $426. The best round-trip flight deal from Portland to Singapore found on momondo in the last 72 hours is $895.

The fastest flight from Portland to Singapore takes 19h 50m

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

Search flight deals

Frequently asked questions about flying from Portland to Singapore

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 50m.
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 2026, there are 3 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 Singapore Airlines (40% of total bookings). The next most popular airlines are Air Canada (38%) and United Airlines (23%).

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 $734	Free Cancellation	Rating 7.1 11,537 reviews	Search Air Canada flights
Singapore Airlines	PriceFrom $789	Free Cancellation	Rating 8.2 1,585 reviews	Search Singapore Airlines flights
United Airlines	PriceFrom $1,024	Free Cancellation	Rating 7.4 10,125 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 $426

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 1/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Portland to Singapore

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Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets

Air Canada flights from Portland to Singapore

Our best Air Canada 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 from Portland to Singapore?

Can stopping save me money on Portland to Singapore flights?

How have Portland to Singapore flight prices changed over time?

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

What airlines fly to Singapore?

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

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

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

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

When to book flights from Portland to Singapore

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Cabin classes currently available on flights to Singapore

List of cabin classes available on flights landing in Singapore. Availability may vary depending on flight origin and airline.

Fly to other destinations from Portland

According to popular flight searches on momondo this year

Complete your trip to Singapore

Explore popular destinations other users love

According to popular flight searches on momondo this year