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Cheap flights from Oregon 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 Oregon 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 Oregon 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
7:07 pm - 8:15 pm
PDX
-
SIN
33h 08m
2 stops
United Airlines Logo
10:10 am - 9:08 pm
SIN
-
PDX
26h 58m
2 stops
$895United Airlines
Tue, Nov 3 - Tue, Nov 17
United Airlines Logo
9:00 am - 6:35 pm
PDX
-
SIN
42h 35m
1 stop
United Airlines Logo
10:10 am - 10:44 pm
SIN
-
PDX
28h 34m
1 stop
$896United Airlines
Sun, Oct 18 - Thu, Nov 5
United Airlines Logo
7:15 pm - 6:35 pm
PDX
-
SIN
32h 20m
1 stop
United Airlines Logo
8:45 am - 2:27 pm
SIN
-
PDX
20h 42m
1 stop
$897United Airlines
Sun, Sep 6 - Mon, Oct 19
ANA Logo
5:30 am - 12:55 am
PDX
-
SIN
27h 25m
2 stops
ANA Logo
6:35 am - 6:31 pm
SIN
-
PDX
27h 56m
2 stops
$912ANA
Thu, Nov 12 - Thu, Dec 10
Air Canada Logo
10:00 am - 7:00 am
PDX
-
SIN
29h 00m
1 stop
Air Canada Logo
8:40 am - 9:26 am
SIN
-
PDX
16h 46m
1 stop
$918Air Canada
Wed, Nov 11 - Tue, Dec 8
Qatar Airways Logo
10:14 am - 3:45 pm
BOI
-
SIN
39h 31m
2 stops
Qatar Airways Logo
7:40 pm - 10:27 pm
SIN
-
BOI
40h 47m
2 stops
$1,083Qatar Airways
Thu, Aug 20 - Mon, Aug 31
Qatar Airways Logo
8:57 am - 8:50 am
BOI
-
SIN
33h 53m
2 stops
Qatar Airways Logo
3:15 am - 9:20 pm
SIN
-
BOI
32h 05m
2 stops
$1,100Qatar Airways
Mon, Oct 19 - Fri, Oct 30
Multiple Airlines Logo
7:07 pm - 5:25 am
BOI
-
SIN
44h 18m
2 stops
Multiple Airlines Logo
10:10 am - 10:45 pm
SIN
-
BOI
50h 35m
2 stops
$1,112Multiple Airlines
Wed, Jul 8 - Tue, Jul 14
Multiple Airlines Logo
10:14 am - 9:30 pm
BOI
-
SIN
45h 16m
2 stops
Multiple Airlines Logo
9:05 am - 9:20 pm
SIN
-
BOI
26h 15m
1 stop
$1,137Multiple Airlines
Wed, Sep 30 - Wed, Oct 14

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United Airlines flights from Oregon to Singapore

Our best United Airlines deals on Oregon to Singapore flight tickets
United Airlines
Aug 17
PDX11:15 amPortland
28h 00m
1 stop
SIN6:15 amSingapore Changi
Sep 1
SIN8:35 pmSingapore Changi
28h 36m
1 stop
PDX10:11 amPortland
$891
United Airlines
Nov 3
PDX6:53 amPortland
21h 22m
1 stop
SIN8:15 pmSingapore Changi
Nov 17
SIN10:20 pmSingapore Changi
35h 45m
2 stops
PDX6:05 pmPortland
$895
United Airlines
Oct 18
PDX9:00 amPortland
42h 35m
1 stop
SIN6:35 pmSingapore Changi
Nov 5
SIN10:10 amSingapore Changi
28h 34m
1 stop
PDX10:44 pmPortland
$896

Korean Air flights from Oregon to Singapore

Our best Korean Air deals on Oregon to Singapore flight tickets
Korean Air
Nov 11
PDX6:30 amPortland
45h 55m
2 stops
SIN8:25 pmSingapore Changi
Dec 10
SIN10:40 amSingapore Changi
42h 38m
2 stops
PDX1:18 pmPortland
$1,009
Korean Air
Aug 7
BOI10:35 amBoise Air Term. Gowen Fld
23h 20m
2 stops
SIN11:55 pmSingapore Changi
Aug 14
SIN7:30 amSingapore Changi
29h 30m
2 stops
BOI11:00 pmBoise Air Term. Gowen Fld
$1,174
Korean Air
Oct 11
BOI10:38 amBoise Air Term. Gowen Fld
42h 37m
2 stops
SIN7:15 pmSingapore Changi
Jan 9
SIN1:35 amSingapore Changi
27h 47m
2 stops
BOI2:22 pmBoise Air Term. Gowen Fld
$1,329

momondo Fare Finder

 
Customize your flight search to find flights from Oregon 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 27, 2026.
Use the filters below to find and compare flights from Oregon 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

Tue 11/3

7:07 pm-8:15 pm

2 stops33h 08m

Singapore Changi

Tue 11/17

10:10 am-9:08 pm

2 stops26h 58m

$895

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 10/18

9:00 am-6:35 pm

1 stop42h 35m

Singapore Changi

Thu 11/5

10:10 am-10:44 pm

1 stop28h 34m

$896

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 9/6

7:15 pm-6:35 pm

1 stop32h 20m

Singapore Changi

Mon 10/19

8:45 am-2:27 pm

1 stop20h 42m

$897

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 11/12

5:30 am-12:55 am

2 stops27h 25m

Singapore Changi

Thu 12/10

6:35 am-6:31 pm

2 stops27h 56m

$912
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 11/11

10:00 am-7:00 am

1 stop29h 00m

Singapore Changi

Tue 12/8

8:40 am-9:26 am

1 stop16h 46m

$918

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Thu 8/20

10:14 am-3:45 pm

2 stops39h 31m

Singapore Changi

Mon 8/31

7:40 pm-10:27 pm

2 stops40h 47m

$1,083

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Mon 10/19

8:57 am-8:50 am

2 stops33h 53m

Singapore Changi

Fri 10/30

3:15 am-9:20 pm

2 stops32h 05m

$1,100

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Wed 7/8

7:07 pm-5:25 am

2 stops44h 18m

Singapore Changi

Tue 7/14

10:10 am-10:45 pm

2 stops50h 35m

$1,112

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Wed 9/30

10:14 am-9:30 pm

2 stops45h 16m

Singapore Changi

Wed 10/14

9:05 am-9:20 pm

1 stop26h 15m

$1,137

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 Oregon 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 Oregon, with most prices found around $209. If you aren’t able to travel to Singapore during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $718.

How far in advance should I book a flight from Oregon to Singapore?

You are more likely to see cheaper flights to Singapore from Oregon when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,097 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Oregon for as low as $822 on momondo.

Can stopping save me money on Oregon to Singapore flights?

You could potentially save up to 11% on your flight if you consider stops on a Oregon to Singapore flight.

Cheap Oregon to Singapore flight deals and tips

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

Fastest flight time

18h 30m

Direct flights

None
The fastest flight from Oregon to Singapore takes 18h 30m
There are no direct flights from Oregon to Singapore. There are no popular flight routes from Oregon to Singapore.
Search flight deals

Frequently asked questions about flying from Oregon to Singapore

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

    Prices for flights from Oregon to Singapore Changi Airport refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Oregon to Singapore Changi Airport.

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

    The necessary travel and health documents for your Singapore Changi Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Oregon to Singapore

Compare and see reviews for airlines that fly from Oregon to Singapore with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $726Free CancellationRating
7.1
11,269 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,555 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
9,901 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Oregon to Singapore for you.

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

momondo does allow users to show only those flights to Singapore from Oregon which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Oregon to Singapore?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Oregon to Singapore.

I’m not ready to book a flight from Oregon to Singapore right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Oregon to Singapore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
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