Cheapest one-way flights from Portland to Singapore in November from $400

Best time to book flights for Portland (PDX) to Singapore (SIN) flights at AirHint

AirHint found the following cheapest one-way flights from Portland (PDX) to Singapore (SIN) in November 2025 (see full year).

One-Way flights

05 Nov Japan Airlines
01 Nov Alaska Airlines

Also check the deals for return flights from Portland to Singapore in November.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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