Flights from Seattle to Boston

Cheapest flights from Seattle

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 15 - Tue, Oct 21

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$217 Roundtrip, found 12 hours ago

$217

Roundtrip

found 12 hours ago

Select Alaska Airlines flight, departing Wed, Oct 15 from Seattle - Tacoma Intl. to Logan Intl., returning Tue, Oct 21, priced at $217 found 12 hours ago

Wed, Oct 15 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$227 Roundtrip, found 12 hours ago

$227

Roundtrip

found 12 hours ago

Select Alaska Airlines flight, departing Wed, Oct 15 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $227 found 12 hours ago

Tue, Oct 14 - Mon, Oct 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$227 Roundtrip, found 12 hours ago

$227

Roundtrip

found 12 hours ago

Select JetBlue Airways flight, departing Tue, Oct 14 from Seattle - Tacoma Intl. to Logan Intl., returning Mon, Oct 20, priced at $227 found 12 hours ago

Mon, Oct 13 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$237 Roundtrip, found 12 hours ago

$237

Roundtrip

found 12 hours ago

Select Alaska Airlines flight, departing Mon, Oct 13 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $237 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$247 Roundtrip, found 12 hours ago

$247

Roundtrip

found 12 hours ago

Select United flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $247 found 12 hours ago

Sun, Oct 19 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$247 Roundtrip, found 12 hours ago

$247

Roundtrip

found 12 hours ago

Select Hawaiian Airlines flight, departing Sun, Oct 19 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $247 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$257 Roundtrip, found 12 hours ago

$257

Roundtrip

found 12 hours ago

Select United flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $257 found 12 hours ago

Thu, Oct 16 - Tue, Oct 21

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$257 Roundtrip, found 12 hours ago

$257

Roundtrip

found 12 hours ago

Select Hawaiian Airlines flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Tue, Oct 21, priced at $257 found 12 hours ago

Thu, Jul 10 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$262 Roundtrip, found 8 hours ago

$262

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Thu, Jul 10 from Seattle - Tacoma Intl. to Logan Intl., returning Tue, Jul 22, priced at $262 found 8 hours ago

Fri, Oct 17 - Fri, Oct 24

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$267 Roundtrip, found 12 hours ago

$267

Roundtrip

found 12 hours ago

Select American Airlines flight, departing Fri, Oct 17 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Oct 24, priced at $267 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$267 Roundtrip, found 12 hours ago

$267

Roundtrip

found 12 hours ago

Select Hawaiian Airlines flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $267 found 12 hours ago

Fri, Oct 17 - Fri, Oct 24

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$270 Roundtrip, found 12 hours ago

$270

Roundtrip

found 12 hours ago

Select American Airlines flight, departing Fri, Oct 17 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Oct 24, priced at $270 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$272 Roundtrip, found 12 hours ago

$272

Roundtrip

found 12 hours ago

Select JetBlue Airways flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $272 found 12 hours ago

Wed, Jul 9 - Wed, Jul 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$273 Roundtrip, found 8 hours ago

$273

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Logan Intl., returning Wed, Jul 23, priced at $273 found 8 hours ago

Fri, Oct 17 - Fri, Oct 24

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$274 Roundtrip, found 12 hours ago

$274

Roundtrip

found 12 hours ago

Select American Airlines flight, departing Fri, Oct 17 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Oct 24, priced at $274 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$277 Roundtrip, found 12 hours ago

$277

Roundtrip

found 12 hours ago

Select Alaska Airlines flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $277 found 12 hours ago

Thu, Oct 16 - Thu, Oct 23

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$277 Roundtrip, found 12 hours ago

$277

Roundtrip

found 12 hours ago

Select United flight, departing Thu, Oct 16 from Seattle - Tacoma Intl. to Logan Intl., returning Thu, Oct 23, priced at $277 found 12 hours ago

Fri, Oct 17 - Fri, Oct 24

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$277 Roundtrip, found 12 hours ago

$277

Roundtrip

found 12 hours ago

Select Delta flight, departing Fri, Oct 17 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Oct 24, priced at $277 found 12 hours ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

PVD

T.F. Green

$372 Roundtrip, found 4 days ago

$372

Roundtrip

found 4 days ago

Select American Airlines flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to T.F. Green, returning Tue, Jul 15, priced at $372 found 4 days ago

Thu, Jul 3 - Sun, Jul 6

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$802 Roundtrip, found 5 days ago

$802

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Jul 3 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Jul 6, priced at $802 found 5 days ago