Book Cheap Flights from Boston with Alaska Airlines

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Find round-trip flight deals from Boston.*

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Boston (BOS)to

San Francisco (SFO)
Oct 30, 2025 - Nov 2, 2025
From
$197
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Seattle (SEA)
Nov 5, 2025 - Nov 19, 2025
From
$197
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Portland (PDX)
Nov 4, 2025 - Nov 5, 2025
From
$277
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

San Diego (SAN)
Dec 9, 2025 - Dec 10, 2025
From
$217
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Fairbanks (FAI)
Oct 30, 2025 - Oct 31, 2025
From
$321
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Anchorage (ANC)
Oct 30, 2025 - Oct 31, 2025
From
$316
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

San Luis Obispo (SBP)
Nov 5, 2025 - Nov 12, 2025
From
$314
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Spokane (GEG)
Nov 4, 2025 - Nov 5, 2025
From
$286
Seen: 8 hours ago
Round-trip
Saver

Boston (BOS)to

Los Angeles (LAX)
Sep 22, 2025 - Sep 23, 2025
From
$237
Seen: 8 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 Boston.*

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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.