Flights from Seattle to New Castle

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.

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$237 Roundtrip, found 22 hours ago

$237

Roundtrip

found 22 hours ago

Select Alaska Airlines flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $237 found 22 hours ago

Thu, Sep 4 - Wed, Sep 17

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$237 Roundtrip, found 22 hours ago

$237

Roundtrip

found 22 hours ago

Select JetBlue Airways flight, departing Thu, Sep 4 from Seattle - Tacoma Intl. to Logan Intl., returning Wed, Sep 17, priced at $237 found 22 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$247 Roundtrip, found 22 hours ago

$247

Roundtrip

found 22 hours ago

Select United flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $247 found 22 hours ago

Wed, Sep 3 - Fri, Sep 19

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$247 Roundtrip, found 22 hours ago

$247

Roundtrip

found 22 hours ago

Select Hawaiian Airlines flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Sep 19, priced at $247 found 22 hours ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$257 Roundtrip, found 21 hours ago

$257

Roundtrip

found 21 hours ago

Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $257 found 21 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$257 Roundtrip, found 22 hours ago

$257

Roundtrip

found 22 hours ago

Select American Airlines flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $257 found 22 hours ago

Fri, Sep 5 - Fri, Sep 19

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$257 Roundtrip, found 22 hours ago

$257

Roundtrip

found 22 hours ago

Select Hawaiian Airlines flight, departing Fri, Sep 5 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Sep 19, priced at $257 found 22 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$267 Roundtrip, found 22 hours ago

$267

Roundtrip

found 22 hours ago

Select Alaska Airlines flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $267 found 22 hours ago

Thu, Jul 3 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$272 Roundtrip, found 5 days ago

$272

Roundtrip

found 5 days ago

Select Hawaiian Airlines flight, departing Thu, Jul 3 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Jul 4, priced at $272 found 5 days ago

Mon, Jun 30 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$277 Roundtrip, found 5 days ago

$277

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Mon, Jun 30 from Seattle - Tacoma Intl. to Logan Intl., returning Fri, Jul 4, priced at $277 found 5 days ago

Thu, Jul 3 - Mon, Jul 7

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$277 Roundtrip, found 5 days ago

$277

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Thu, Jul 3 from Seattle - Tacoma Intl. to Logan Intl., returning Mon, Jul 7, priced at $277 found 5 days ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$287 Roundtrip, found 21 hours ago

$287

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $287 found 21 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$290 Roundtrip, found 22 hours ago

$290

Roundtrip

found 22 hours ago

Select United flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $290 found 22 hours ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$297 Roundtrip, found 21 hours ago

$297

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $297 found 21 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$302 Roundtrip, found 22 hours ago

$302

Roundtrip

found 22 hours ago

Select United flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $302 found 22 hours ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$304 Roundtrip, found 21 hours ago

$304

Roundtrip

found 21 hours ago

Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $304 found 21 hours ago

Sat, Sep 6 - Sat, Sep 20

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$307 Roundtrip, found 22 hours ago

$307

Roundtrip

found 22 hours ago

Select Alaska Airlines flight, departing Sat, Sep 6 from Seattle - Tacoma Intl. to Logan Intl., returning Sat, Sep 20, priced at $307 found 22 hours ago

Mon, Jun 30 - Wed, Jul 2

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$312 Roundtrip, found 5 days ago

$312

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Mon, Jun 30 from Seattle - Tacoma Intl. to Logan Intl., returning Wed, Jul 2, priced at $312 found 5 days ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$313 Roundtrip, found 21 hours ago

$313

Roundtrip

found 21 hours ago

Select United flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $313 found 21 hours ago

Sat, Aug 30 - Sun, Aug 31

SEA

Seattle - Tacoma Intl.

BOS

Logan Intl.

$316 Roundtrip, found 21 hours ago

$316

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sat, Aug 30 from Seattle - Tacoma Intl. to Logan Intl., returning Sun, Aug 31, priced at $316 found 21 hours ago