Flights from Washington to Southwest Washington

Cheapest flights from Washington

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, Jun 23 - Thu, Jun 26

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$294 Roundtrip, found 8 hours ago

$294

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Mon, Jun 23 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Thu, Jun 26, priced at $294 found 8 hours ago

Mon, Jun 23 - Fri, Jun 27

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$314 Roundtrip, found 8 hours ago

$314

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Mon, Jun 23 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Jun 27, priced at $314 found 8 hours ago

Sat, Jun 21 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$320 Roundtrip, found 5 days ago

$320

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jun 21 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $320 found 5 days ago

Sat, Jun 21 - Thu, Jun 26

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$324 Roundtrip, found 8 hours ago

$324

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Sat, Jun 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Thu, Jun 26, priced at $324 found 8 hours ago

Mon, Jun 16 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$328 Roundtrip, found 5 days ago

$328

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 16 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $328 found 5 days ago

Sat, Jun 21 - Thu, Jun 26

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$340 Roundtrip, found 5 days ago

$340

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jun 21 from Ronald Reagan Washington National to Portland Intl., returning Thu, Jun 26, priced at $340 found 5 days ago

Sat, Jun 21 - Fri, Jun 27

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$344 Roundtrip, found 8 hours ago

$344

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Sat, Jun 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Jun 27, priced at $344 found 8 hours ago

Mon, Jun 16 - Thu, Jun 26

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$348 Roundtrip, found 5 days ago

$348

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 16 from Ronald Reagan Washington National to Portland Intl., returning Thu, Jun 26, priced at $348 found 5 days ago

Sat, Jun 21 - Tue, Jun 24

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$354 Roundtrip, found 8 hours ago

$354

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Sat, Jun 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Tue, Jun 24, priced at $354 found 8 hours ago

Mon, Jun 23 - Mon, Jun 23

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$374 Roundtrip, found 8 hours ago

$374

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Mon, Jun 23 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Mon, Jun 23, priced at $374 found 8 hours ago

Thu, Jun 19 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$380 Roundtrip, found 5 days ago

$380

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jun 19 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $380 found 5 days ago

Tue, Jun 17 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$382 Roundtrip, found 5 days ago

$382

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jun 17 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $382 found 5 days ago

Thu, Jun 19 - Thu, Jun 26

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$395 Roundtrip, found 8 hours ago

$395

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Thu, Jun 19 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Thu, Jun 26, priced at $395 found 8 hours ago

Thu, Jun 19 - Thu, Jun 26

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$400 Roundtrip, found 5 days ago

$400

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jun 19 from Ronald Reagan Washington National to Portland Intl., returning Thu, Jun 26, priced at $400 found 5 days ago

Tue, Jun 17 - Thu, Jun 26

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$402 Roundtrip, found 5 days ago

$402

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jun 17 from Ronald Reagan Washington National to Portland Intl., returning Thu, Jun 26, priced at $402 found 5 days ago

Sat, Jun 21 - Mon, Jun 23

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$404 Roundtrip, found 8 hours ago

$404

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Sat, Jun 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Mon, Jun 23, priced at $404 found 8 hours ago

Wed, Jun 18 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$457 Roundtrip, found 5 days ago

$457

Roundtrip

found 5 days ago

Select United flight, departing Wed, Jun 18 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $457 found 5 days ago

Wed, Jun 18 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$478 Roundtrip, found 5 days ago

$478

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jun 18 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $478 found 5 days ago

Wed, Jun 18 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$587 Roundtrip, found 5 days ago

$587

Roundtrip

found 5 days ago

Select American Airlines flight, departing Wed, Jun 18 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $587 found 5 days ago

Wed, Jun 18 - Wed, Jun 25

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$750 Roundtrip, found 5 days ago

$750

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Wed, Jun 18 from Ronald Reagan Washington National to Portland Intl., returning Wed, Jun 25, priced at $750 found 5 days ago