FFL Helper

FFL Helper / Ontario / Portland / September 2026

ONT → PDX · 2026-09

Ontario to Portland in September 2026

Dated one-way fares from Ontario to Portland in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $143
Highest this month $173
Sample fare $143
Airports ONT–PDX
Search September 2026 tickets

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Other months: August 2026 · September 2026 · Full route

September 2026 price calendar

September 2026

From $143 · up to $173

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Dated fares

Portland PDX

$143

Sep 01, 7:12am · 2h 18m · 0 stops

ONT → PDX · Alaska Airlines

Tickets

Portland PDX

$173

Sep 02, 6:00am · 11h 11m · 1 stop

ONT → PDX · Frontier Airlines

Tickets

Booking ONT to PDX in September 2026

This page is only September 2026 on the Ontario to Portland route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Ontario to Portland in September 2026.