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Get United's best fares today on flights from Seattle to Boston from *

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Low fare calendar for flights from Seattle (SEA) to Boston (BOS)

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from
$614*
Viewed:12 hours ago
day-card-journey-type-option-rt
Return:01/30/20
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Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from Seattle to Boston?

FromToDatesFare TypePrice

Seattle (SEA)

Boston (BOS)

Depart: 02/11/20

Return: 02/25/20

Roundtrip
from
$206*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/18/20

Return: 02/25/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/12/20

Return: 02/19/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/11/20

Return: 02/18/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/12/20

Return: 02/26/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/18/20

Return: 03/03/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/25/20

Return: 03/03/20

Roundtrip
from
$210*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/19/20

Return: 02/26/20

Roundtrip
from
$215*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/20/20

Return: 02/27/20

Roundtrip
from
$215*
Viewed:1dayago

Seattle (SEA)

Boston (BOS)

Depart: 02/24/20

Return: 03/02/20

Roundtrip
from
$215*
Viewed:1dayago

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Boston

Thursday scattered clouds
31°F 01/23/20
Friday overcast clouds
35°F 01/24/20
Saturday moderate rain
39°F 01/25/20
Sunday light rain
41°F 01/26/20
Monday light snow
36°F 01/27/20
Tuesday overcast clouds
33°F 01/28/20
Wednesday sky is clear
35°F 01/29/20
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