Flights from Londonderry to Seattle

Cheapest flights from Londonderry

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, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$343 Roundtrip, found 18 hours ago

$343

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $343 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$343 Roundtrip, found 18 hours ago

$343

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $343 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$348 Roundtrip, found 18 hours ago

$348

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $348 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$353 Roundtrip, found 18 hours ago

$353

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $353 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$393 Roundtrip, found 18 hours ago

$393

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $393 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$398 Roundtrip, found 18 hours ago

$398

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $398 found 18 hours ago

Tue, Aug 19 - Tue, Aug 26

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$407 Roundtrip, found 18 hours ago

$407

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Tue, Aug 19 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $407 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$410 Roundtrip, found 18 hours ago

$410

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $410 found 18 hours ago

Wed, Aug 13 - Tue, Aug 26

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$412 Roundtrip, found 18 hours ago

$412

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Wed, Aug 13 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $412 found 18 hours ago

Mon, Aug 18 - Tue, Aug 26

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$425 Roundtrip, found 18 hours ago

$425

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Mon, Aug 18 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $425 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$430 Roundtrip, found 18 hours ago

$430

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $430 found 18 hours ago

Thu, Aug 14 - Tue, Aug 26

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$430 Roundtrip, found 18 hours ago

$430

Roundtrip

found 18 hours ago

Select United flight, departing Thu, Aug 14 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $430 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$436 Roundtrip, found 18 hours ago

$436

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $436 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$438 Roundtrip, found 18 hours ago

$438

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $438 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$443 Roundtrip, found 18 hours ago

$443

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $443 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$443 Roundtrip, found 18 hours ago

$443

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $443 found 18 hours ago

Thu, Aug 14 - Thu, Aug 28

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$443 Roundtrip, found 18 hours ago

$443

Roundtrip

found 18 hours ago

Select JetBlue Airways flight, departing Thu, Aug 14 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Thu, Aug 28, priced at $443 found 18 hours ago

Sat, Aug 16 - Thu, Aug 28

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$448 Roundtrip, found 18 hours ago

$448

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Thu, Aug 28, priced at $448 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$452 Roundtrip, found 18 hours ago

$452

Roundtrip

found 18 hours ago

Select United flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $452 found 18 hours ago

Sat, Aug 16 - Mon, Aug 25

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$577 Roundtrip, found 18 hours ago

$577

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sat, Aug 16 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 25, priced at $577 found 18 hours ago