Alaska Airlines Flights from Boston to San Diego
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1 Passenger
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Lowest fares from Boston to San Diego
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One-way low-fare flights Boston to San Diego.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jan 7, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Feb 4, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jan 21, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Feb 3, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Feb 11, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jan 28, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jan 20, 2026 | From $109 Seen: 4 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jan 27, 2026 | From $109 Seen: 4 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.