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Cheap flights from Portland to Singapore from $415

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 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
3:15 pm - 7:00 am
PDX
-
SIN
23h 45m
1 stop
Air Canada Logo
8:40 am - 9:26 am
SIN
-
PDX
16h 46m
1 stop
$918Air Canada
Tue, Nov 3 - Tue, Nov 17
Air Canada Logo
7:00 am - 7:00 am
PDX
-
SIN
32h 00m
1 stop
Air Canada Logo
8:40 am - 2:41 pm
SIN
-
PDX
22h 01m
1 stop
$918Air Canada
Thu, Jan 21 - Thu, Feb 11
Multiple Airlines Logo
7:19 am - 5:15 am
PDX
-
SIN
30h 56m
2 stops
Multiple Airlines Logo
4:55 pm - 4:36 pm
SIN
-
PDX
38h 41m
2 stops
$965Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
Multiple Airlines Logo
7:03 am - 11:20 pm
PDX
-
SIN
25h 17m
2 stops
Multiple Airlines Logo
6:15 am - 4:50 pm
SIN
-
PDX
25h 35m
2 stops
$987Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
7:03 am - 2:25 am
PDX
-
SIN
28h 22m
2 stops
Multiple Airlines Logo
12:55 am - 9:55 pm
SIN
-
PDX
36h 00m
2 stops
$991Multiple Airlines
Fri, Sep 11 - Wed, Sep 16
Singapore Airlines Logo
9:50 pm - 7:05 pm
PDX
-
SIN
29h 15m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
20h 35m
1 stop
$1,089Singapore Airlines
Mon, Jan 18 - Tue, Feb 2
Singapore Airlines Logo
7:03 am - 7:10 pm
PDX
-
SIN
21h 07m
1 stop
Singapore Airlines Logo
9:05 am - 4:44 pm
SIN
-
PDX
22h 39m
1 stop
$1,111Singapore Airlines
Wed, Sep 30 - Fri, Oct 16
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
8:45 am - 6:11 pm
SIN
-
PDX
24h 26m
1 stop
$1,134United Airlines
Tue, Sep 8 - Tue, Sep 15
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
8:35 pm - 10:11 am
SIN
-
PDX
28h 36m
1 stop
$1,134United Airlines
Thu, Aug 27 - Thu, Sep 10
Singapore Airlines Logo
9:50 pm - 7:05 pm
PDX
-
SIN
29h 15m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
20h 35m
1 stop
$1,183Singapore Airlines
Sat, Jan 16 - Sun, Jan 31

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Alaska Airlines flights from Portland to Singapore

Our best Alaska Airlines deals on Portland to Singapore flight tickets
Alaska Airlines
Oct 28
PDX9:31 amPortland
32h 14m
2 stops
SIN8:45 amSingapore Changi
Jan 23
SIN3:15 amSingapore Changi
33h 33m
2 stops
PDX8:48 pmPortland
$1,023
Alaska Airlines
Jan 16
PDX10:30 amPortland
30h 15m
2 stops
SIN8:45 amSingapore Changi
Jan 30
SIN3:15 amSingapore Changi
33h 33m
2 stops
PDX8:48 pmPortland
$1,033

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Nov 3
PDX10:45 amPortland
30h 00m
2 stops
SIN8:45 amSingapore Changi
Nov 17
SIN8:15 pmSingapore Changi
36h 35m
2 stops
PDX4:50 pmPortland
$1,003
Qatar Airways
Nov 3
PDX10:45 amPortland
30h 00m
2 stops
SIN8:45 amSingapore Changi
Nov 17
SIN8:15 pmSingapore Changi
36h 35m
2 stops
PDX4:50 pmPortland
$1,004
Qatar Airways
Jan 21
PDX7:10 amPortland
33h 35m
2 stops
SIN8:45 amSingapore Changi
Feb 10
SIN3:15 amSingapore Changi
33h 58m
2 stops
PDX9:13 pmPortland
$1,012

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 28, 2026.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandSingapore

PDX - SIN

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

$918

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 1/21

7:00 am-7:00 am

1 stop32h 00m

Singapore Changi

Thu 2/11

8:40 am-2:41 pm

1 stop22h 01m

$918

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

7:19 am-5:15 am

2 stops30h 56m

Singapore Changi

Tue 9/1

4:55 pm-4:36 pm

2 stops38h 41m

$965

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 9/7

7:03 am-11:20 pm

2 stops25h 17m

Singapore Changi

Mon 9/14

6:15 am-4:50 pm

2 stops25h 35m

$987

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 9/11

7:03 am-2:25 am

2 stops28h 22m

Singapore Changi

Wed 9/16

12:55 am-9:55 pm

2 stops36h 00m

$991

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 1/18

9:50 pm-7:05 pm

1 stop29h 15m

Singapore Changi

Tue 2/2

9:15 am-1:50 pm

1 stop20h 35m

$1,089

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 9/30

7:03 am-7:10 pm

1 stop21h 07m

Singapore Changi

Fri 10/16

9:05 am-4:44 pm

1 stop22h 39m

$1,111

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/8

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Tue 9/15

8:45 am-6:11 pm

1 stop24h 26m

$1,134

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8/27

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Thu 9/10

8:35 pm-10:11 am

1 stop28h 36m

$1,134

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 1/16

9:50 pm-7:05 pm

1 stop29h 15m

Singapore Changi

Sun 1/31

9:15 am-1:50 pm

1 stop20h 35m

$1,183

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Singapore from

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?

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 October is also cheap. Prices for this month can be found on momondo for an average of $986.

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 $1,099 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 $874 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 23% on your flight if you consider stops on a Portland to Singapore flight.

Cheap Portland to Singapore flight deals and tips

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

Fastest flight time

18h 30m

Direct flights

None
The fastest flight from Portland to Singapore takes 18h 30m
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

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

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

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

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

    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.

  • What documentation or ID do you need to fly to Singapore?

    The travel and health documents required for your trip to Singapore 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 CanadaPriceFrom $719Free CancellationRating
7.1
11,391 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $789Free CancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
10,042 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Portland to Singapore flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Singapore that suits you.

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

Yes. momondo allows you to filter the results for Portland to Singapore flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Portland to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Singapore trip

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