Alaska Airlines Flights from Ontario to Portland
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1 Passenger
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Lowest fares from Ontario to Portland
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One-way low-fare flights Ontario to Portland.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Nov 14, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Nov 17, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Dec 1, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Dec 2, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Dec 9, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Sep 15, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Sep 16, 2026 | From $139 Seen: 7 hours ago | |
| Ontario (ONT) | Portland (PDX) | One-way | Saver | Depart: Sep 19, 2026 | From $139 Seen: 7 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.