Book Cheap Flights from Boston with Alaska Airlines
Find round-trip flight deals from Boston.*
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Las Vegas (LAS)*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: Jun 3, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Jun 9, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Jun 10, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Aug 26, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Sep 1, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Francisco (SFO) | One-way | Saver | Depart: Aug 25, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 23, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jun 1, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jun 7, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jun 8, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: May 30, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | San Diego (SAN) | One-way | Saver | Depart: Jun 3, 2026 | From $139 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: Jun 2, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: Jun 3, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: Jun 6, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: Jun 10, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: May 27, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Portland (PDX) | One-way | Saver | Depart: May 28, 2026 | From $144 Seen: 10 hours ago | |
| Boston (BOS) | Spokane (GEG) | One-way | Saver | Depart: May 24, 2026 | From $147 Seen: 10 hours ago | |
| Boston (BOS) | Spokane (GEG) | One-way | Saver | Depart: May 30, 2026 | From $147 Seen: 10 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.