Cheapest return flights from Portland to Singapore in March from $893

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

AirHint found the following cheapest return flights from Portland (PDX) to Singapore (SIN) in March 2025 (see full year).

Return flights

18 Mar - 23 Mar United
15 Mar - 22 Mar United

Also check the deals for one-way flights from Portland to Singapore in March.

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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