Book Cheap Flights from Boston with Alaska Airlines
Find round-trip flight deals from Boston.*
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Los Angeles (LAX)*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 Boston.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Oct 17, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Nov 6, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Nov 8, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Dec 4, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Dec 5, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Dec 6, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 5, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 6, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 8, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 11, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 12, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Nov 14, 2025 | From $99 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Dec 10, 2025 | From $109 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Dec 9, 2025 | From $109 Seen: 8 hours ago | |
| Boston (BOS) | Los Angeles (LAX) | One-way | Saver | Depart: Oct 22, 2025 | From $114 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Nov 1, 2025 | From $119 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Nov 3, 2025 | From $119 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Nov 7, 2025 | From $119 Seen: 8 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Nov 8, 2025 | From $119 Seen: 8 hours ago | |
| Boston (BOS) | Los Angeles (LAX) | One-way | Saver | Depart: Nov 13, 2025 | From $123 Seen: 8 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.