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Cheap flights from Portland to Singapore from $413

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.
United Airlines Logo
11:15 am - 6:15 am
PDX
-
SIN
28h 00m
1 stop
United Airlines Logo
8:35 pm - 10:11 am
SIN
-
PDX
28h 36m
1 stop
$891United Airlines
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
8:45 am - 9:05 pm
SIN
-
PDX
27h 20m
2 stops
$895United Airlines
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
1:39 pm - 8:15 pm
PDX
-
SIN
38h 36m
1 stop
United Airlines Logo
10:10 am - 2:27 pm
SIN
-
PDX
20h 17m
1 stop
$897United Airlines
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
5:30 am - 6:35 pm
PDX
-
SIN
22h 05m
1 stop
United Airlines Logo
11:05 am - 8:59 pm
SIN
-
PDX
24h 54m
2 stops
$901United Airlines
Thu, Aug 13 - Mon, Aug 31
United Airlines Logo
3:43 pm - 6:15 am
PDX
-
SIN
23h 32m
1 stop
United Airlines Logo
6:15 am - 6:19 pm
SIN
-
PDX
27h 04m
3 stops
$903United Airlines
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
10:50 am - 6:15 am
PDX
-
SIN
28h 25m
2 stops
United Airlines Logo
6:15 am - 6:19 pm
SIN
-
PDX
27h 04m
3 stops
$907United Airlines
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
5:35 am - 8:15 pm
PDX
-
SIN
22h 40m
1 stop
United Airlines Logo
6:35 am - 12:54 am
SIN
-
PDX
34h 19m
2 stops
$909United Airlines
Wed, Nov 4 - Thu, Nov 12
ANA Logo
9:00 am - 12:45 am
PDX
-
SIN
24h 45m
2 stops
ANA Logo
6:15 am - 2:47 pm
SIN
-
PDX
23h 32m
2 stops
$912ANA
Thu, Aug 13 - Mon, Aug 31
United Airlines Logo
6:59 pm - 8:15 pm
PDX
-
SIN
33h 16m
2 stops
United Airlines Logo
6:35 am - 12:54 am
SIN
-
PDX
34h 19m
2 stops
$913United Airlines
Tue, Nov 3 - Thu, Nov 12
United Airlines Logo
9:00 am - 6:15 am
PDX
-
SIN
30h 15m
1 stop
United Airlines Logo
8:45 am - 8:59 pm
SIN
-
PDX
27h 14m
1 stop
$925United Airlines
Sat, Aug 15 - Mon, Aug 31

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Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Jun 22
PDX5:00 amPortland
43h 45m
2 stops
SIN3:45 pmSingapore Changi
Jul 2
SIN3:15 amSingapore Changi
34h 10m
2 stops
PDX10:25 pmPortland
$1,379
Qatar Airways
Jun 22
PDX8:19 amPortland
45h 56m
2 stops
SIN9:15 pmSingapore Changi
Jul 8
SIN3:15 amSingapore Changi
35h 15m
2 stops
PDX11:30 pmPortland
$1,424
Qatar Airways
Jun 22
PDX8:19 amPortland
45h 56m
2 stops
SIN9:15 pmSingapore Changi
Jul 2
SIN3:15 amSingapore Changi
28h 40m
2 stops
PDX4:55 pmPortland
$1,527

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Aug 17
PDX7:00 amPortland
20h 35m
1 stop
SIN6:35 pmSingapore Changi
Sep 1
SIN8:45 amSingapore Changi
21h 12m
1 stop
PDX2:57 pmPortland
$891
United Airlines
Aug 17
PDX7:00 amPortland
20h 35m
1 stop
SIN6:35 pmSingapore Changi
Sep 1
SIN8:45 amSingapore Changi
27h 20m
2 stops
PDX9:05 pmPortland
$895
United Airlines
Nov 3
PDX1:39 pmPortland
38h 36m
1 stop
SIN8:15 pmSingapore Changi
Nov 10
SIN10:10 amSingapore Changi
20h 17m
1 stop
PDX2:27 pmPortland
$897

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 June 15, 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

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

11:15 am-6:15 am

1 stop28h 00m

Singapore Changi

Tue 9/1

8:35 pm-10:11 am

1 stop28h 36m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Tue 9/1

8:45 am-9:05 pm

2 stops27h 20m

$895

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/3

1:39 pm-8:15 pm

1 stop38h 36m

Singapore Changi

Tue 11/10

10:10 am-2:27 pm

1 stop20h 17m

$897
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8/13

5:30 am-6:35 pm

1 stop22h 05m

Singapore Changi

Mon 8/31

11:05 am-8:59 pm

2 stops24h 54m

$901

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

3:43 pm-6:15 am

1 stop23h 32m

Singapore Changi

Tue 9/1

6:15 am-6:19 pm

3 stops27h 04m

$903

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

10:50 am-6:15 am

2 stops28h 25m

Singapore Changi

Tue 9/1

6:15 am-6:19 pm

3 stops27h 04m

$907

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 11/4

5:35 am-8:15 pm

1 stop22h 40m

Singapore Changi

Thu 11/12

6:35 am-12:54 am

2 stops34h 19m

$909

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8/13

9:00 am-12:45 am

2 stops24h 45m

Singapore Changi

Mon 8/31

6:15 am-2:47 pm

2 stops23h 32m

$912

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/3

6:59 pm-8:15 pm

2 stops33h 16m

Singapore Changi

Thu 11/12

6:35 am-12:54 am

2 stops34h 19m

$913

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 8/15

9:00 am-6:15 am

1 stop30h 15m

Singapore Changi

Mon 8/31

8:45 am-8:59 pm

1 stop27h 14m

$925

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 August is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $209. If you aren’t able to travel to Singapore during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $693.

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 $1,081 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 $822 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 5% 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

22h 20m

Direct flights

None
The fastest flight from Portland to Singapore takes 22h 20m
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 $718Free CancellationRating
7.1
11,194 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,545 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
9,833 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.

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