Flights from Washington to St. Helens

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 1 day ago

$294

Roundtrip

found 1 day 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 1 day ago

Mon, Jun 23 - Fri, Jun 27

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$314 Roundtrip, found 1 day ago

$314

Roundtrip

found 1 day 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 1 day ago

Sat, Jun 21 - Thu, Jun 26

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$324 Roundtrip, found 1 day ago

$324

Roundtrip

found 1 day 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 1 day ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$337 Roundtrip, found 1 hour ago

$337

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $337 found 1 hour ago

Sat, Jun 21 - Fri, Jun 27

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$344 Roundtrip, found 1 day ago

$344

Roundtrip

found 1 day 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 1 day ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$347 Roundtrip, found 1 hour ago

$347

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $347 found 1 hour ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$347 Roundtrip, found 1 hour ago

$347

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $347 found 1 hour ago

Sat, Jun 21 - Tue, Jun 24

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$354 Roundtrip, found 1 day ago

$354

Roundtrip

found 1 day 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 1 day ago

Tue, Jul 22 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$357 Roundtrip, found 1 hour ago

$357

Roundtrip

found 1 hour ago

Select Delta flight, departing Tue, Jul 22 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $357 found 1 hour ago

Tue, Jul 22 - Sat, Jul 26

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$367 Roundtrip, found 1 hour ago

$367

Roundtrip

found 1 hour ago

Select Delta flight, departing Tue, Jul 22 from Washington Dulles Intl. to Portland Intl., returning Sat, Jul 26, priced at $367 found 1 hour ago

Mon, Jun 23 - Mon, Jun 23

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$374 Roundtrip, found 1 day ago

$374

Roundtrip

found 1 day 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 1 day ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$376 Roundtrip, found 1 hour ago

$376

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $376 found 1 hour ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$380 Roundtrip, found 1 hour ago

$380

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $380 found 1 hour ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$386 Roundtrip, found 1 hour ago

$386

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $386 found 1 hour ago

Wed, Jul 16 - Tue, Jul 22

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$386 Roundtrip, found 1 hour ago

$386

Roundtrip

found 1 hour ago

Select Alaska Airlines flight, departing Wed, Jul 16 from Washington Dulles Intl. to Portland Intl., returning Tue, Jul 22, priced at $386 found 1 hour ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$390 Roundtrip, found 1 hour ago

$390

Roundtrip

found 1 hour ago

Select United flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $390 found 1 hour ago

Thu, Jun 19 - Thu, Jun 26

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$395 Roundtrip, found 1 day ago

$395

Roundtrip

found 1 day 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 1 day ago

Fri, Jul 18 - Sun, Jul 20

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$440 Roundtrip, found 1 hour ago

$440

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Washington Dulles Intl. to Portland Intl., returning Sun, Jul 20, priced at $440 found 1 hour ago

Fri, Jul 18 - Tue, Jul 22

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$474 Roundtrip, found 1 hour ago

$474

Roundtrip

found 1 hour ago

Select Hawaiian Airlines flight, departing Fri, Jul 18 from Washington Dulles Intl. to Portland Intl., returning Tue, Jul 22, priced at $474 found 1 hour ago

Sat, Jul 19 - Wed, Jul 23

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$477 Roundtrip, found 1 hour ago

$477

Roundtrip

found 1 hour ago

Select American Airlines flight, departing Sat, Jul 19 from Washington Dulles Intl. to Portland Intl., returning Wed, Jul 23, priced at $477 found 1 hour ago