Book Cheap Flights from Ontario with Alaska Airlines
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Find round-trip flight deals from Ontario.*
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Ontario (ONT)to
Seattle (SEA)Oct 31, 2026 - Oct 31, 2026
From
$241
Seen: 59 minutes ago
Round-trip
Saver
Ontario (ONT)to
Portland (PDX)Oct 13, 2026 - Oct 17, 2026
From
$257
Seen: 5 hours ago
Round-trip
Saver
Ontario (ONT)to
Honolulu (HNL)Nov 10, 2026 - Nov 11, 2026
From
$325
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
Boise (BOI)Sep 12, 2026 - Sep 16, 2026
From
$197
Seen: 5 hours ago
Round-trip
Saver
Ontario (ONT)to
Santa Rosa (STS)Sep 10, 2026 - Sep 14, 2026
From
$167
Seen: 4 hours ago
Round-trip
Saver
Ontario (ONT)to
Anchorage (ANC)Oct 30, 2026 - Nov 2, 2026
From
$359
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
Spokane (GEG)Sep 16, 2026 - Sep 19, 2026
From
$261
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
Lihue (LIH)Oct 6, 2026 - Oct 7, 2026
From
$430
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
Maui (OGG)Sep 22, 2026 - Sep 28, 2026
From
$453
Seen: 2 hours ago
Round-trip
Saver
Ontario (ONT)to
Vancouver (YVR)Oct 5, 2026 - Oct 6, 2026
From
$417
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
New York (JFK)Sep 11, 2026 - Sep 25, 2026
From
$339
Seen: 14 hours ago
Round-trip
Saver
Ontario (ONT)to
Eugene (EUG)Aug 26, 2026 - Sep 2, 2026
From
$289
Seen: 14 hours ago
Round-trip
Saver
*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.
One-way flight deals from Ontario.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Ontario (ONT) | Boise (BOI) | One-way | Saver | Depart: Oct 9, 2026 | From $115 Seen: 13 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Sep 15, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Sep 29, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Oct 3, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Oct 10, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Oct 17, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Spokane (GEG) | One-way | Saver | Depart: Oct 21, 2026 | From $131 Seen: 14 hours ago | |
| Ontario (ONT) | Seattle (SEA) | One-way | Saver | Depart: Nov 18, 2026 | From $134 Seen: 14 hours ago | |
| Ontario (ONT) | Seattle (SEA) | One-way | Saver | Depart: Dec 9, 2026 | From $134 Seen: 14 hours ago | |
| Ontario (ONT) | Seattle (SEA) | One-way | Saver | Depart: Dec 12, 2026 | From $134 Seen: 14 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.