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.

Sat, May 10 - Sun, May 11

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$220 Roundtrip, found 1 day ago

$220

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, May 10 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, May 11, priced at $220 found 1 day ago

Wed, May 28 - Tue, Jun 3

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$227 Roundtrip, found 4 days ago

$227

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 3, priced at $227 found 4 days ago

Sat, May 10 - Sat, May 17

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$230 Roundtrip, found 1 day ago

$230

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, May 10 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 17, priced at $230 found 1 day ago

Tue, Jun 17 - Tue, Jun 24

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$233 Roundtrip, found 1 day ago

$233

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 17 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 24, priced at $233 found 1 day ago

Wed, May 28 - Thu, May 29

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$240 Roundtrip, found 4 days ago

$240

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Thu, May 29, priced at $240 found 4 days ago

Fri, May 30 - Sun, Jun 1

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$241 Roundtrip, found 4 days ago

$241

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, May 30 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 1, priced at $241 found 4 days ago

Wed, May 28 - Sat, May 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 4 days ago

$247

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Wed, May 28 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 31, priced at $247 found 4 days ago

Tue, May 27 - Sat, May 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$250 Roundtrip, found 4 days ago

$250

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 31, priced at $250 found 4 days ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$259 Roundtrip, found 4 days ago

$259

Roundtrip

found 4 days ago

Select United flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $259 found 4 days ago

Sat, May 24 - Tue, Jun 3

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 4 days ago

$260

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Sat, May 24 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Jun 3, priced at $260 found 4 days ago

Sat, May 24 - Sun, Jun 1

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$261 Roundtrip, found 4 days ago

$261

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, May 24 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Jun 1, priced at $261 found 4 days ago

Tue, May 27 - Fri, May 30

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$264 Roundtrip, found 4 days ago

$264

Roundtrip

found 4 days ago

Select United flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Fri, May 30, priced at $264 found 4 days ago

Tue, May 27 - Sat, May 31

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$266 Roundtrip, found 4 days ago

$266

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, May 27 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sat, May 31, priced at $266 found 4 days ago

Thu, Aug 28 - Fri, Sep 12

PHL

Philadelphia Intl.

PAE

Seattle Paine Field Intl. Airport

$280 Roundtrip, found 1 day ago

$280

Roundtrip

found 1 day 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 1 day ago

Sun, Aug 31 - Sun, Sep 7

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$282 Roundtrip, found 1 day ago

$282

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sun, Aug 31 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 7, priced at $282 found 1 day ago

Fri, Aug 29 - Tue, Sep 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$327 Roundtrip, found 1 day ago

$327

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $327 found 1 day ago

Sat, Sep 20 - Sun, Sep 28

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$337 Roundtrip, found 6 days ago

$337

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Sun, Sep 28, priced at $337 found 6 days ago

Thu, Jun 19 - Mon, Jun 23

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$448 Roundtrip, found 1 day ago

$448

Roundtrip

found 1 day 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 1 day ago

Fri, Aug 29 - Tue, Sep 9

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$482 Roundtrip, found 1 day ago

$482

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $482 found 1 day ago

Fri, May 9 - Tue, May 13

PHL

Philadelphia Intl.

SEA

Seattle - Tacoma Intl.

$605 Roundtrip, found 1 day ago

$605

Roundtrip

found 1 day ago

Select United flight, departing Fri, May 9 from Philadelphia Intl. to Seattle - Tacoma Intl., returning Tue, May 13, priced at $605 found 1 day ago