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United flights from Boston to Seattle starting at

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

Sunday
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$366 Price subject to changes
Viewed:17 hours ago
Economy
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$309 Price subject to changes
Viewed:17 hours ago
Economy
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$314 Price subject to changes
Viewed:7 hours ago
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$314 Price subject to changes
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$305 Price subject to changes
Viewed:15 hours ago
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$289 Price subject to changes
Viewed:17 hours ago
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$355 Price subject to changes
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$355 Price subject to changes
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$243 Price subject to changes
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$243 Price subject to changes
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$282 Price subject to changes
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$243 Price subject to changes
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$243 Price subject to changes
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$252 Price subject to changes
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$252 Price subject to changes
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$252 Price subject to changes
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$232 Price subject to changes
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$232 Price subject to changes
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$227 Price subject to changes
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$227 Price subject to changes
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$229 Price subject to changes
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$229 Price subject to changes
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$212 Price subject to changes
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$212 Price subject to changes
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$229 Price subject to changes
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$212 Price subject to changes
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$212 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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$213 Price subject to changes
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Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, 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.

More United deals on Boston (BOS) to Seattle (SEA) flights

FromToDatesFare TypePrice

Boston (BOS)

Seattle (SEA)

Depart: 10/20/20

Return: 10/27/20

Roundtrip
from
$212*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/21/20

Return: 10/28/20

Roundtrip
from
$212*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/23/20

Return: 10/30/20

Roundtrip
from
$212*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/24/20

Return: 10/31/20

Roundtrip
from
$212*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/17/20

Return: 10/20/20

Roundtrip
from
$212*
Viewed:1dayago

Boston (BOS)

Seattle (SEA)

Depart: 10/28/20

Return: 11/04/20

Roundtrip
from
$213*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/29/20

Return: 11/05/20

Roundtrip
from
$213*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/30/20

Return: 11/06/20

Roundtrip
from
$213*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/31/20

Return: 11/07/20

Roundtrip
from
$213*
Viewed:16hoursago

Boston (BOS)

Seattle (SEA)

Depart: 10/28/20

Return: 11/11/20

Roundtrip
from
$213*
Viewed:16hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, 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 Seattle

Monday sky is clear
62°F 09/28/20
Tuesday sky is clear
67°F 09/29/20
Wednesday sky is clear
74°F 09/30/20
Thursday overcast clouds
72°F 10/01/20
Friday scattered clouds
70°F 10/02/20
Saturday sky is clear
69°F 10/03/20
Sunday few clouds
69°F 10/04/20
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