Cheap flights from Portland to Singapore from S$ 570
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2-3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
20 Dec — 27 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portland to Singapore Changi are usually found in September or March, booked 75 days in advance, depart on a Monday or Tuesday and return on a Monday
Cheap flight deals from Portland to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 November 2025.
Explore the most affordable flight options available from Portland to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2025.
Thu 27-1115:15PDX - SIN
1 stop23h 45mMultiple Airlines
Thu 4-1223:55SIN - PDX
2 stops49h 20mMultiple Airlines
Deal found 18-11S$ 1,317
Thu 27-1110:05PDX - SIN
1 stop29h 55mUnited Airlines
Thu 4-1210:10SIN - PDX
1 stop28h 42mUnited Airlines
Deal found 18-11S$ 1,337
Thu 27-1107:15PDX - SIN
2 stops24h 55mKorean Air
Thu 4-1210:40SIN - PDX
2 stops24h 19mKorean Air
Deal found 18-11S$ 1,362
Sat 22-1106:00PDX - SIN
1 stop22h 15mUnited Airlines
Mon 24-1110:10SIN - PDX
1 stop28h 41mUnited Airlines
Deal found 18-11S$ 1,533
Wed 26-1100:35PDX - SIN
2 stops31h 35mDelta
Wed 3-1201:35SIN - PDX
2 stops37h 21mDelta
Deal found 18-11S$ 1,870
Thu 18-1216:26PDX - SIN
2 stops27h 29mCathay Pacific
Sat 27-1212:55SIN - PDX
2 stops24h 16mCathay Pacific
Deal found 19-11S$ 2,016
Fri 12-1207:25PDX - SIN
2 stops25h 25mMultiple Airlines
Wed 17-1216:45SIN - PDX
2 stops36h 59mMultiple Airlines
Deal found 18-11S$ 2,136
Sat 22-1119:00PDX - SIN
2 stops24h 55mMultiple Airlines
Mon 24-1116:35SIN - PDX
3 stops32h 40mMultiple Airlines
Deal found 18-11S$ 2,307
Fri 12-1215:15PDX - SIN
1 stop23h 45mAir Canada
Wed 17-1206:35SIN - PDX
2 stops24h 05mAir Canada
Deal found 18-11S$ 2,309
Thu 18-1215:15PDX - SIN
1 stop23h 45mAir Canada
Sat 27-1208:50SIN - PDX
1 stop16h 25mAir Canada
Deal found 19-11S$ 2,336
Best flights from Portland to Singapore
Discover carefully curated flight deals from Portland to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 November 2025.
Tue 3-209:50PDX - SIN
2 stops23h 05mAir Canada
Thu 19-208:50SIN - PDX
2 stops31h 54mAir Canada
Deal found 19-11S$ 1,084
Thu 29-113:35PDX - SIN
2 stops25h 25mMultiple Airlines
Sat 14-208:50SIN - PDX
1 stop16h 25mMultiple Airlines
Deal found 17-11S$ 1,116
Thu 5-313:39PDX - SIN
2 stops25h 21mAir Canada
Mon 16-321:00SIN - PDX
2 stops27h 15mAir Canada
Deal found 19-11S$ 1,093
Wed 4-307:30PDX - SIN
2 stops31h 30mAir Canada
Mon 16-321:00SIN - PDX
2 stops27h 15mAir Canada
Deal found 19-11S$ 1,093
Sun 1-215:15PDX - SIN
2 stops41h 40mAir Canada
Thu 19-208:50SIN - PDX
1 stop21h 50mAir Canada
Deal found 19-11S$ 1,101
Thu 5-313:39PDX - SIN
2 stops25h 21mAir Canada
Sun 15-308:50SIN - PDX
1 stop39h 25mAir Canada
Deal found 19-11S$ 1,109
Wed 4-313:40PDX - SIN
2 stops25h 20mAir Canada
Sun 15-308:50SIN - PDX
1 stop20h 50mAir Canada
Deal found 19-11S$ 1,109
Wed 4-313:40PDX - SIN
2 stops25h 20mAir Canada
Sat 14-308:50SIN - PDX
1 stop24h 40mAir Canada
Deal found 19-11S$ 1,109
Thu 5-319:00PDX - SIN
1 stop20h 00mAir Canada
Fri 13-308:50SIN - PDX
1 stop20h 50mAir Canada
Deal found 19-11S$ 1,118
Mon 2-315:15PDX - SIN
2 stops31h 35mAir Canada
Sun 15-308:50SIN - PDX
1 stop39h 25mAir Canada
Deal found 19-11S$ 1,119
Mon 2-319:00PDX - SIN
2 stops27h 50mAir Canada
Fri 13-308:50SIN - PDX
2 stops29h 14mAir Canada
Deal found 19-11S$ 1,132
Tue 3-313:40PDX - SIN
2 stops25h 20mAir Canada
Fri 13-308:50SIN - PDX
2 stops29h 14mAir Canada
Deal found 19-11S$ 1,136
Last-minute flights from Portland to Singapore
Discover last-minute flight deals from Portland to Singapore. Data last updated 20 November 2025 and is based on user searches.
Sat 22-1106:00PDX - SIN
1 stop22h 15mUnited Airlines
Mon 24-1110:10SIN - PDX
1 stop28h 41mUnited Airlines
Deal found 18-11S$ 1,533
Sat 22-1119:00PDX - SIN
2 stops24h 55mMultiple Airlines
Mon 24-1116:35SIN - PDX
3 stops32h 40mMultiple Airlines
Deal found 18-11S$ 2,307
Wed 26-1100:35PDX - SIN
2 stops31h 35mDelta
Wed 3-1201:35SIN - PDX
2 stops37h 21mDelta
Deal found 18-11S$ 1,870
Thu 27-1115:15PDX - SIN
1 stop23h 45mMultiple Airlines
Thu 4-1223:55SIN - PDX
2 stops49h 20mMultiple Airlines
Deal found 18-11S$ 1,317
Thu 27-1110:05PDX - SIN
1 stop29h 55mUnited Airlines
Thu 4-1210:10SIN - PDX
1 stop28h 42mUnited Airlines
Deal found 18-11S$ 1,337
Thu 27-1107:15PDX - SIN
2 stops29h 45mKorean Air
Wed 3-1201:35SIN - PDX
2 stops33h 15mKorean Air
Deal found 18-11S$ 1,362
Fri 12-1207:25PDX - SIN
2 stops25h 25mMultiple Airlines
Wed 17-1216:45SIN - PDX
2 stops36h 59mMultiple Airlines
Deal found 18-11S$ 2,136
Fri 12-1215:15PDX - SIN
1 stop23h 45mAir Canada
Wed 17-1206:35SIN - PDX
2 stops24h 05mAir Canada
Deal found 18-11S$ 2,309
Thu 18-1216:26PDX - SIN
2 stops27h 29mCathay Pacific
Sat 27-1212:55SIN - PDX
2 stops24h 16mCathay Pacific
Deal found 19-11S$ 2,016
Thu 18-1215:15PDX - SIN
1 stop23h 45mAir Canada
Sat 27-1208:50SIN - PDX
1 stop16h 25mAir Canada
Deal found 19-11S$ 2,336
One-way flights from Portland to Singapore
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated 20 November 2025.
Mon 2-321:19PDX - SIN
2 stops58h 21mMultiple Airlines
Deal found 18-11S$ 570
Mon 9-221:30PDX - SIN
1 stop28h 15mSingapore Airlines
Deal found 19-11S$ 582
Mon 9-219:00PDX - SIN
2 stops37h 55mAir Canada
Deal found 20-11S$ 626
Fri 13-214:30PDX - SIN
2 stops29h 25mCathay Pacific
Deal found 19-11S$ 758
Fri 13-215:50PDX - SIN
1 stop36h 25mUnited Airlines
Deal found 18-11S$ 849
Sun 1-300:40PDX - SIN
2 stops31h 30mDelta
Deal found 18-11S$ 920
Mon 9-206:00PDX - SIN
3 stops27h 00mMultiple Airlines
Deal found 19-11S$ 1,885
Thu 12-200:40PDX - SIN
2 stops31h 30mDelta
Deal found 18-11S$ 7,287
Cheapflights Fare Finder
Customise 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, Cheapflights users made 200,618 searches. Data last updated 20 November 2025.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.
Fly from
Portland
Fly to
Singapore
Route
Depart
Return
Price
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 3-2
09:50-00:55
2 stops23h 05m
Singapore Changi
Thu 19-2
08:50-00:44
2 stops31h 54m
S$ 1,084
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 5-3
13:39-07:00
2 stops25h 21m
Singapore Changi
Mon 16-3
21:00-09:15
2 stops27h 15m
S$ 1,093
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 4-3
07:30-07:00
2 stops31h 30m
Singapore Changi
Mon 16-3
21:00-09:15
2 stops27h 15m
S$ 1,093
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sun 1-2
15:15-00:55
2 stops41h 40m
Singapore Changi
Thu 19-2
08:50-14:40
1 stop21h 50m
S$ 1,101
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 5-3
13:39-07:00
2 stops25h 21m
Singapore Changi
Sun 15-3
08:50-09:15
1 stop39h 25m
S$ 1,109
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 4-3
13:40-07:00
2 stops25h 20m
Singapore Changi
Sun 15-3
08:50-14:40
1 stop20h 50m
S$ 1,109
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 4-3
13:40-07:00
2 stops25h 20m
Singapore Changi
Sat 14-3
08:50-18:30
1 stop24h 40m
S$ 1,109
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 29-1
13:35-07:00
2 stops25h 25m
Singapore Changi
Sat 14-2
08:50-09:15
1 stop16h 25m
S$ 1,116
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 5-3
19:00-07:00
1 stop20h 00m
Singapore Changi
Fri 13-3
08:50-14:40
1 stop20h 50m
S$ 1,118
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 2-3
15:15-14:50
2 stops31h 35m
Singapore Changi
Sun 15-3
08:50-09:15
1 stop39h 25m
S$ 1,119
Flights are sorted by cheapest return flights first.
Deals found on 18-11
Showing 1-10 of 18 results
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Best time to book a flight from Portland to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Portland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Singapore
How far ahead should I book a flight from Portland to Singapore?
Use this chart to determine the optimal time to book a return flight from Portland to Singapore. Price data was last updated on 14 November 2025.
To ensure you get the cheapest price possible for a flight from Portland to Singapore, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Portland to Singapore?
Currently, September is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 904). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Related info for your journey
Find useful and relevant information for your journey from Portland to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How long is the flight from Portland to Singapore?
There are many flights that can get you from Portland to Singapore in 23h 05m. Fly via Air Canada to get the fastest option. The distance between Portland and Singapore is about 13073 km.
Can I find deals for flights from Portland to Singapore that include hotel bookings?
Yes. In addition to deals on Portland to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Singapore.
Can I find deals for business class flights from Portland to Singapore?
Yes. Cheapflights offers flight deals from Portland to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to Singapore?
Currently, September is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 904). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Portland to Singapore?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Singapore from Portland today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Portland to Singapore?
Cheapflights helps you find that perfect flight to Singapore from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Portland to Singapore with no change fees?
Yes, we can. To see specific flights from Portland to Singapore with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Portland to Singapore become cheaper?
Not ready to book yet? You can track prices for flights from Portland to Singapore on Cheapflights with our Price Alert feature and get notified when better prices are available.
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