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Cheap flights from Portland to Singapore from $524

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
0 bags

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Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
9:19 am - 9:15 pm
PDX
-
SIN
44h 56m
2 stops
Qatar Airways Logo
7:40 pm - 11:30 pm
SIN
-
PDX
42h 50m
2 stops
$1,085Qatar Airways
Tue, Jul 14 - Wed, Jul 22
Qatar Airways Logo
9:19 am - 9:15 pm
PDX
-
SIN
44h 56m
2 stops
Qatar Airways Logo
7:40 pm - 11:35 pm
SIN
-
PDX
42h 55m
2 stops
$1,125Qatar Airways
Fri, Jul 17 - Fri, Jul 24
Qatar Airways Logo
9:19 am - 9:15 pm
PDX
-
SIN
44h 56m
2 stops
Qatar Airways Logo
7:40 pm - 11:35 pm
SIN
-
PDX
42h 55m
2 stops
$1,138Qatar Airways
Thu, Jul 16 - Fri, Jul 24
Multiple Airlines Logo
9:19 am - 3:45 pm
PDX
-
SIN
39h 26m
2 stops
Multiple Airlines Logo
3:15 am - 4:55 pm
SIN
-
PDX
28h 40m
2 stops
$1,183Multiple Airlines
Tue, Jun 23 - Mon, Jun 29
Qatar Airways Logo
8:19 am - 9:15 pm
PDX
-
SIN
45h 56m
2 stops
Qatar Airways Logo
7:40 pm - 11:30 pm
SIN
-
PDX
42h 50m
2 stops
$1,191Qatar Airways
Thu, Jul 16 - Wed, Jul 22
Multiple Airlines Logo
7:45 pm - 12:25 pm
PDX
-
SIN
25h 40m
2 stops
Multiple Airlines Logo
7:00 am - 12:50 am
SIN
-
PDX
32h 50m
2 stops
$1,214Multiple Airlines
Mon, May 18 - Tue, Jun 9
Qatar Airways Logo
8:19 am - 9:15 pm
PDX
-
SIN
45h 56m
2 stops
Qatar Airways Logo
3:15 am - 11:35 pm
SIN
-
PDX
35h 20m
2 stops
$1,216Qatar Airways
Tue, Jul 14 - Fri, Jul 17
Multiple Airlines Logo
7:45 pm - 11:45 am
PDX
-
SIN
25h 00m
2 stops
Multiple Airlines Logo
7:00 am - 2:45 pm
SIN
-
PDX
22h 45m
1 stop
$1,227Multiple Airlines
Mon, May 18 - Tue, Jun 9
Qatar Airways Logo
6:19 am - 9:15 pm
PDX
-
SIN
47h 56m
2 stops
Qatar Airways Logo
7:40 pm - 11:30 pm
SIN
-
PDX
42h 50m
2 stops
$1,231Qatar Airways
Sat, Jul 18 - Wed, Jul 22
Multiple Airlines Logo
7:45 pm - 12:45 am
PDX
-
SIN
38h 00m
2 stops
Multiple Airlines Logo
7:00 am - 12:50 am
SIN
-
PDX
32h 50m
2 stops
$1,309Multiple Airlines
Mon, May 18 - Tue, Jun 9

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Sep 3
PDX11:45 amPortland
37h 00m
2 stops
SIN3:45 pmSingapore Changi
Sep 9
SIN3:15 amSingapore Changi
28h 35m
2 stops
PDX4:50 pmPortland
$1,007
Qatar Airways
Sep 3
PDX8:10 amPortland
46h 05m
2 stops
SIN9:15 pmSingapore Changi
Sep 11
SIN7:40 pmSingapore Changi
39h 10m
2 stops
PDX7:50 pmPortland
$1,010
Qatar Airways
Sep 4
PDX11:45 amPortland
30h 05m
2 stops
SIN8:50 amSingapore Changi
Sep 10
SIN3:15 amSingapore Changi
28h 35m
2 stops
PDX4:50 pmPortland
$1,045

Singapore Airlines flights from Portland to Singapore

Our best Singapore Airlines deals on Portland to Singapore flight tickets
Singapore Airlines
Oct 5
PDX2:34 pmPortland
26h 06m
1 stop
SIN7:40 amSingapore Changi
Oct 20
SIN9:00 amSingapore Changi
23h 00m
1 stop
PDX5:00 pmPortland
$976
Singapore Airlines
Sep 3
PDX5:10 amPortland
21h 25m
1 stop
SIN5:35 pmSingapore Changi
Sep 10
SIN9:00 amSingapore Changi
25h 50m
1 stop
PDX7:50 pmPortland
$992
Singapore Airlines
Oct 15
PDX6:00 pmPortland
22h 40m
1 stop
SIN7:40 amSingapore Changi
Oct 19
SIN9:15 amSingapore Changi
26h 35m
1 stop
PDX8:50 pmPortland
$996

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 May 11, 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

Tue 7/14

9:19 am-9:15 pm

2 stops44h 56m

Singapore Changi

Wed 7/22

7:40 pm-11:30 pm

2 stops42h 50m

$1,085

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 7/17

9:19 am-9:15 pm

2 stops44h 56m

Singapore Changi

Fri 7/24

7:40 pm-11:35 pm

2 stops42h 55m

$1,125

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 7/16

9:19 am-9:15 pm

2 stops44h 56m

Singapore Changi

Fri 7/24

7:40 pm-11:35 pm

2 stops42h 55m

$1,138

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 6/23

9:19 am-3:45 pm

2 stops39h 26m

Singapore Changi

Mon 6/29

3:15 am-4:55 pm

2 stops28h 40m

$1,183

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 7/16

8:19 am-9:15 pm

2 stops45h 56m

Singapore Changi

Wed 7/22

7:40 pm-11:30 pm

2 stops42h 50m

$1,191

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 5/18

7:45 pm-12:25 pm

2 stops25h 40m

Singapore Changi

Tue 6/9

7:00 am-12:50 am

2 stops32h 50m

$1,214

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 7/14

8:19 am-9:15 pm

2 stops45h 56m

Singapore Changi

Fri 7/17

3:15 am-11:35 pm

2 stops35h 20m

$1,216
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 5/18

7:45 pm-11:45 am

2 stops25h 00m

Singapore Changi

Tue 6/9

7:00 am-2:45 pm

1 stop22h 45m

$1,227

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 7/18

6:19 am-9:15 pm

2 stops47h 56m

Singapore Changi

Wed 7/22

7:40 pm-11:30 pm

2 stops42h 50m

$1,231

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 5/18

7:45 pm-12:45 am

2 stops38h 00m

Singapore Changi

Tue 6/9

7:00 am-12:50 am

2 stops32h 50m

$1,309

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between Portland and Singapore?

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 $857. 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 $913.

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 $1,050 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 $778 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 9% 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

Fastest flight time

21h 25m

Direct flights

None
The fastest flight from Portland to Singapore takes 21h 25m
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 21h 25m.

  • 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?

  • 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?

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 $694Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
Korean AirPriceFrom $786Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,511 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
9,701 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

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Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Air Canada
Singapore Airlines
United Airlines
Korean Air