$327+ Cheap flights from Portland (PDX) to Singapore
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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Apr 6 — Apr 131
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Singapore with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Singapore
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to SingaporeExplore 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 March 7, 2026.
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 March 7, 2026.
This Gurufare deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:35 pm
PDX
- SIN
2 stops24h 30m
Multiple Airlines
Thu 9/242:30 pm
SIN
- PDX
2 stops24h 40m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$700
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:40 pm
PDX
- SIN
1 stop23h 00m
Singapore Airlines
Mon 8/318:45 pm
SIN
- PDX
1 stop27h 40m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$846
This Ovago deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:14 am
PDX
- SIN
2 stops41h 21m
Multiple Airlines
Wed 4/811:10 pm
SIN
- PDX
2 stops39h 48m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$890
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:40 pm
PDX
- SIN
1 stop23h 00m
Singapore Airlines
Thu 9/249:00 am
SIN
- PDX
1 stop19h 50m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$899
This oojo deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:05 am
PDX
- SIN
2 stops26h 40m
Cathay Pacific
Tue 4/218:05 pm
SIN
- PDX
2 stops40h 30m
Cathay Pacific
Deal found 3/6![Cathay Pacific logo]()
$937
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:00 am
PDX
- SIN
1 stop21h 35m
Singapore Airlines
Mon 8/318:45 pm
SIN
- PDX
1 stop28h 40m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$940
This KAYAK deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:10 am
PDX
- SIN
2 stops42h 50m
Multiple Airlines
Sat 5/212:55 am
SIN
- PDX
2 stops37h 49m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$943
This oojo deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:20 am
PDX
- SIN
1 stop20h 50m
Singapore Airlines
Sat 8/229:15 am
SIN
- PDX
1 stop22h 35m
Singapore Airlines
Deal found 3/4![Singapore Airlines logo]()
$944
This Gurufare deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:35 pm
PDX
- SIN
2 stops32h 15m
Multiple Airlines
Thu 4/232:00 pm
SIN
- PDX
2 stops20h 34m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$948
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
PDX
- SIN
1 stop21h 10m
Singapore Airlines
Sat 5/29:00 am
SIN
- PDX
1 stop18h 52m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$965
Best flights from Portland to SingaporeDiscover carefully curated flight deals from Portland to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 7, 2026.
Discover carefully curated flight deals from Portland to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 7, 2026.
This Qatar Airways deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:35 pm
PDX
- SIN
2 stops28h 15m
Qatar Airways
Tue 4/73:15 am
SIN
- PDX
2 stops35h 29m
Qatar Airways
Deal found 3/3![Qatar Airways logo]()
$1,047
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:15 am
PDX
- SIN
1 stop20h 20m
United Airlines
Tue 6/98:35 pm
SIN
- PDX
1 stop28h 45m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,055
This Japan Airlines deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:05 am
PDX
- SIN
2 stops32h 05m
Japan Airlines
Wed 4/151:55 am
SIN
- PDX
2 stops34h 40m
Japan Airlines
Deal found 3/4![Japan Airlines logo]()
$1,089
This United Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:15 am
PDX
- SIN
1 stop20h 20m
United Airlines
Thu 4/169:00 am
SIN
- PDX
2 stops28h 54m
United Airlines
Deal found 3/2![United Airlines logo]()
$1,059
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:15 am
PDX
- SIN
1 stop20h 20m
United Airlines
Tue 4/79:00 am
SIN
- PDX
2 stops23h 44m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,059
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:14 pm
PDX
- SIN
1 stop20h 31m
United Airlines
Mon 4/279:00 am
SIN
- PDX
1 stop24h 07m
United Airlines
Deal found 3/6![United Airlines logo]()
$1,104
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/171:39 pm
PDX
- SIN
1 stop26h 21m
United Airlines
Wed 4/299:00 am
SIN
- PDX
1 stop18h 26m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,107
Last-minute flights from Portland to SingaporeDiscover last-minute flight deals from Portland to Singapore. Data last updated March 7, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Singapore. Data last updated March 7, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/113:52 pm
PDX
- SIN
2 stops26h 43m
Multiple Airlines
Tue 3/172:10 pm
SIN
- PDX
2 stops24h 34m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$966
This Priceline deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:16 am
PDX
- SIN
2 stops42h 34m
Cathay Pacific
Mon 4/271:45 am
SIN
- PDX
2 stops33h 50m
Cathay Pacific
Deal found 3/6![Cathay Pacific logo]()
$987
This Ovago deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:14 am
PDX
- SIN
2 stops41h 21m
Multiple Airlines
Wed 4/811:10 pm
SIN
- PDX
2 stops39h 48m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$890
This oojo deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:05 am
PDX
- SIN
2 stops26h 40m
Cathay Pacific
Tue 4/218:05 pm
SIN
- PDX
2 stops40h 30m
Cathay Pacific
Deal found 3/6![Cathay Pacific logo]()
$937
This Gurufare deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:35 pm
PDX
- SIN
2 stops32h 15m
Multiple Airlines
Thu 4/232:00 pm
SIN
- PDX
2 stops20h 34m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$948
This Ovago deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:14 am
PDX
- SIN
2 stops31h 16m
Multiple Airlines
Mon 4/278:05 pm
SIN
- PDX
2 stops28h 25m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$990
This oojo deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:14 am
PDX
- SIN
2 stops26h 31m
Cathay Pacific
Tue 4/281:25 pm
SIN
- PDX
2 stops22h 10m
Cathay Pacific
Deal found 3/7![Cathay Pacific logo]()
$967
This KAYAK deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:10 am
PDX
- SIN
2 stops42h 50m
Multiple Airlines
Sat 5/212:55 am
SIN
- PDX
2 stops37h 49m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$943
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
PDX
- SIN
1 stop21h 10m
Singapore Airlines
Sat 5/29:00 am
SIN
- PDX
1 stop18h 52m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$965
One-way flights from Portland to SingaporeSearch for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated March 7, 2026.
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated March 7, 2026.
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:48 pm
PDX
- SIN
2 stops28h 17m
Philippine Airlines
Deal found 3/3![Philippine Airlines logo]()
$327
This Gurufare deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:30 pm
PDX
- SIN
2 stops28h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$334
This BusinessClass deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:30 pm
PDX
- SIN
2 stops24h 35m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:13 pm
PDX
- SIN
2 stops32h 32m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$417
This FlightHub deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:00 am
PDX
- SIN
2 stops26h 45m
ANA
Deal found 3/3![ANA logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/912:13 pm
PDX
- SIN
2 stops32h 32m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:13 pm
PDX
- SIN
1 stop28h 27m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:58 am
PDX
- SIN
3 stops45h 47m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$443
This KAYAK deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:00 am
PDX
- SIN
2 stops26h 45m
ANA
Deal found 3/2![ANA logo]()
$445
Find flight deals from Portland to Singapore
Keep the following information in mind while searching for Portland to Singapore flight deals. Data was last updated March 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $846 (oojo) |
One-way from | $327 (oojo) |
Popular in | December |
Cheapest in | September |
Average price | $1,045 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 7, 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
Cheapest round-trip
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 4/1
1:35 pm-8:50 am
2 stops28h 15m
Singapore Changi
Tue 4/7
3:15 am-11:44 pm
2 stops35h 29m
$1,047
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 5/18
7:15 am-6:35 pm
1 stop20h 20m
Singapore Changi
Tue 6/9
8:35 pm-10:20 am
1 stop28h 45m
$1,055
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 4/13
7:15 am-6:35 pm
1 stop20h 20m
Singapore Changi
Thu 4/16
9:00 am-10:54 pm
2 stops28h 54m
$1,059
Quickest round-trip
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 3/31
7:15 am-6:35 pm
1 stop20h 20m
Singapore Changi
Tue 4/7
9:00 am-5:44 pm
2 stops23h 44m
$1,059
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 4/13
7:05 am-6:10 am
2 stops32h 05m
Singapore Changi
Wed 4/15
1:55 am-9:35 pm
2 stops34h 40m
$1,089
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Mon 4/20
7:14 pm-6:45 am
1 stop20h 31m
Singapore Changi
Mon 4/27
9:00 am-6:07 pm
1 stop24h 07m
$1,104
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 3/17
1:39 pm-7:00 am
1 stop26h 21m
Singapore Changi
Wed 4/29
9:00 am-12:26 pm
1 stop18h 26m
$1,107
Cheapest one-way
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 8/5
3:30 pm-9:05 am
2 stops26h 35m
$327
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 8/4
5:30 pm-9:05 am
2 stops24h 35m
$361
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 8/5
5:34 pm-12:25 pm
2 stops27h 51m
$428
Showing 1-10 of 15 resultsSorted by cheapest first
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.
PDX-SIN
Estimated round-trip 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
PDX-SG0
PDX-SIN
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 $693). Flying from Portland to Singapore in December is currently the most expensive (average of $827). 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.
Reviews of airlines servicing Singapore
Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated March 7, 2026.
Read reviews from past customers who have flown Korean Air, Singapore Airlines, and United Airlines from Portland to Singapore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
8.2
Boarding
8.5
Overall
8.4
Food
8.1
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Entertainment
8.2
Boarding
8.5
Overall
8.4
Food
8.1
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Entertainment
8.2
Boarding
8.5
Overall
8.4
Food
8.1
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Entertainment
8.2
Boarding
8.5
Overall
8.4
Food
8.1
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Entertainment
8.2
Boarding
8.5
Overall
8.4
Food
8.1
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Portland to Singapore
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Singapore by cabin class
Find flights from Portland to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Singapore flights
Browse other Portland and Singapore flight options. Last updated on March 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Portland to Singapore
Discover the top 5 airlines that operate flights from Portland to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$694 | Average$876 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$792 | Average$978 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$803 | Average$1,071 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$837 | Average$1,026 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$880 | Average$1,076 | FlexibilityNo cancel fee | On-time69% |