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.

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$382 Roundtrip, found 11 hours ago

$382

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $382 found 11 hours ago

Tue, Aug 5 - Wed, Aug 6

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$447 Roundtrip, found 11 hours ago

$447

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Tue, Aug 5 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $447 found 11 hours ago

Tue, Aug 5 - Tue, Aug 12

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$452 Roundtrip, found 11 hours ago

$452

Roundtrip

found 11 hours ago

Select United flight, departing Tue, Aug 5 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 12, priced at $452 found 11 hours ago

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$472 Roundtrip, found 11 hours ago

$472

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $472 found 11 hours ago

Tue, Jul 29 - Wed, Aug 6

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$472 Roundtrip, found 11 hours ago

$472

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Tue, Jul 29 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $472 found 11 hours ago

Thu, Jul 31 - Wed, Aug 6

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$482 Roundtrip, found 11 hours ago

$482

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Thu, Jul 31 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $482 found 11 hours ago

Wed, Jul 30 - Fri, Aug 8

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$487 Roundtrip, found 11 hours ago

$487

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Jul 30 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Fri, Aug 8, priced at $487 found 11 hours ago

Wed, Aug 6 - Tue, Aug 12

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$488 Roundtrip, found 11 hours ago

$488

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Aug 6 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Aug 12, priced at $488 found 11 hours ago

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$496 Roundtrip, found 11 hours ago

$496

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $496 found 11 hours ago

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$502 Roundtrip, found 11 hours ago

$502

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $502 found 11 hours ago

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$512 Roundtrip, found 11 hours ago

$512

Roundtrip

found 11 hours ago

Select Alaska Airlines flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $512 found 11 hours ago

Fri, Aug 1 - Thu, Aug 7

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$517 Roundtrip, found 11 hours ago

$517

Roundtrip

found 11 hours ago

Select United flight, departing Fri, Aug 1 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Thu, Aug 7, priced at $517 found 11 hours ago

Tue, Jul 29 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$517 Roundtrip, found 11 hours ago

$517

Roundtrip

found 11 hours ago

Select United flight, departing Tue, Jul 29 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $517 found 11 hours ago

Mon, Aug 4 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$519 Roundtrip, found 11 hours ago

$519

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Mon, Aug 4 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $519 found 11 hours ago

Fri, Aug 1 - Fri, Aug 8

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$522 Roundtrip, found 11 hours ago

$522

Roundtrip

found 11 hours ago

Select United flight, departing Fri, Aug 1 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Fri, Aug 8, priced at $522 found 11 hours ago

Wed, Aug 6 - Thu, Aug 7

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$523 Roundtrip, found 11 hours ago

$523

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Aug 6 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Thu, Aug 7, priced at $523 found 11 hours ago

Wed, Aug 6 - Mon, Aug 11

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$528 Roundtrip, found 11 hours ago

$528

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Aug 6 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Mon, Aug 11, priced at $528 found 11 hours ago

Sun, Aug 3 - Wed, Aug 6

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$532 Roundtrip, found 11 hours ago

$532

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Sun, Aug 3 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $532 found 11 hours ago

Sat, Aug 2 - Wed, Aug 6

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$538 Roundtrip, found 11 hours ago

$538

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Sat, Aug 2 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $538 found 11 hours ago

Wed, Jul 30 - Sat, Aug 9

MHT

Manchester-Boston Regional

SEA

Seattle - Tacoma Intl.

$541 Roundtrip, found 11 hours ago

$541

Roundtrip

found 11 hours ago

Select United flight, departing Wed, Jul 30 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $541 found 11 hours ago