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: Mar 30, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Apr 29, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Apr 30, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 16, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 24, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 26, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 29, 2026 | From $139 Seen: 14 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jun 2, 2026 | From $139 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.