Flights from Dover to Seattle

Cheapest flights from Dover

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.

Tue, Jun 17 - Tue, Jun 24

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$233 Roundtrip, found 4 days ago

$233

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Jun 17 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 24, priced at $233 found 4 days ago

Sun, Aug 17 - Thu, Aug 21

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$250 Roundtrip, found 1 hour ago

$250

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, Aug 21, priced at $250 found 1 hour ago

Thu, Aug 28 - Fri, Sep 12

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$280 Roundtrip, found 4 days ago

$280

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Aug 28 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Fri, Sep 12, priced at $280 found 4 days ago

Sun, Aug 31 - Sun, Sep 7

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$282 Roundtrip, found 4 days ago

$282

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Sun, Aug 31 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 7, priced at $282 found 4 days ago

Sun, Aug 31 - Wed, Sep 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$287 Roundtrip, found 4 days ago

$287

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Sun, Aug 31 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $287 found 4 days ago

Tue, Aug 26 - Sun, Sep 7

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$292 Roundtrip, found 4 days ago

$292

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Tue, Aug 26 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 7, priced at $292 found 4 days ago

Tue, Aug 26 - Wed, Sep 10

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 4 days ago

$297

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Tue, Aug 26 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $297 found 4 days ago

Sun, Aug 31 - Sat, Sep 6

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$300 Roundtrip, found 4 days ago

$300

Roundtrip

found 4 days ago

Select Delta flight, departing Sun, Aug 31 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Sep 6, priced at $300 found 4 days ago

Fri, Aug 29 - Tue, Sep 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$304 Roundtrip, found 4 days ago

$304

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $304 found 4 days ago

Fri, Aug 29 - Fri, Sep 12

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$310 Roundtrip, found 4 days ago

$310

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle Paine Field Intl. Airport, returning Fri, Sep 12, priced at $310 found 4 days ago

Fri, Aug 1 - Sat, Aug 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$313 Roundtrip, found 2 days ago

$313

Roundtrip

found 2 days ago

Select United flight, departing Fri, Aug 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $313 found 2 days ago

Tue, Jul 15 - Sat, Jul 19

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$317 Roundtrip, found 2 days ago

$317

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Tue, Jul 15 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Jul 19, priced at $317 found 2 days ago

Fri, Aug 29 - Tue, Sep 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$327 Roundtrip, found 4 days ago

$327

Roundtrip

found 4 days ago

Select American Airlines flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $327 found 4 days ago

Thu, Jul 17 - Thu, Jul 17

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$330 Roundtrip, found 2 days ago

$330

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Jul 17 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, Jul 17, priced at $330 found 2 days ago

Fri, Aug 1 - Sat, Aug 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$333 Roundtrip, found 2 days ago

$333

Roundtrip

found 2 days ago

Select United flight, departing Fri, Aug 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $333 found 2 days ago

Fri, Aug 1 - Sat, Aug 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$335 Roundtrip, found 2 days ago

$335

Roundtrip

found 2 days ago

Select American Airlines flight, departing Fri, Aug 1 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, Aug 9, priced at $335 found 2 days ago

Thu, Jul 17 - Sun, Jul 20

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$336 Roundtrip, found 2 days ago

$336

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jul 20, priced at $336 found 2 days ago

Thu, Jun 19 - Mon, Jun 23

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$448 Roundtrip, found 4 days ago

$448

Roundtrip

found 4 days ago

Select Sun Country Airlines flight, departing Thu, Jun 19 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Mon, Jun 23, priced at $448 found 4 days ago

Fri, Aug 29 - Tue, Sep 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$482 Roundtrip, found 4 days ago

$482

Roundtrip

found 4 days ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $482 found 4 days ago