Cheap flights from Ontario to Portland

Cheapest current fares: $153 in June 2026, 1,351 km direct flight in ~1h 35m.

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Live fares · ONT → PDX

Cheapest month-by-month fares

Lowest available fare per calendar month from Ontario (ONT) to Portland (PDX). Refreshed daily.

Ontario (ONT) → Portland (PDX)

  1. June 2026 $153

Frequently asked questions

  • What is the cheapest month to fly from Ontario to Portland?

    Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Ontario (ONT) to Portland (PDX), with fares starting from $153.

  • What is the lowest current fare from ONT to PDX?

    The lowest currently-listed fare from Ontario (ONT) to Portland (PDX) is $153 on 2026-06-14.

  • How long is the flight from Ontario to Portland?

    Direct flights from ONT to PDX cover approximately 1,351 km (839 miles), with an estimated flight time of 1h 35m. Operating airlines: AS.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.

Full route page: ONT → PDX Cheapest month to fly to Portland All flights from Ontario All flights to Portland Flights to USA Visa-free with USA passport AS routes