Flights from Washington to Lake Oswego

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.

Tue, May 13 - Wed, May 14

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$208 Roundtrip, found 20 hours ago

$208

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Tue, May 13 from Ronald Reagan Washington National to Portland Intl., returning Wed, May 14, priced at $208 found 20 hours ago

Tue, Oct 21 - Fri, Oct 31

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$221 Roundtrip, found 5 days ago

$221

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Tue, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Oct 31, priced at $221 found 5 days ago

Tue, Jul 22 - Tue, Jul 29

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$224 Roundtrip, found 20 hours ago

$224

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Tue, Jul 22 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Tue, Jul 29, priced at $224 found 20 hours ago

Tue, May 13 - Wed, May 14

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$228 Roundtrip, found 20 hours ago

$228

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Tue, May 13 from Ronald Reagan Washington National to Portland Intl., returning Wed, May 14, priced at $228 found 20 hours ago

Tue, Oct 21 - Fri, Oct 31

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$237 Roundtrip, found 5 days ago

$237

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Oct 31, priced at $237 found 5 days ago

Tue, Oct 21 - Fri, Oct 31

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$237 Roundtrip, found 5 days ago

$237

Roundtrip

found 5 days ago

Select United flight, departing Tue, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Oct 31, priced at $237 found 5 days ago

Tue, Oct 21 - Fri, Oct 31

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$237 Roundtrip, found 5 days ago

$237

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Oct 31, priced at $237 found 5 days ago

Tue, Oct 21 - Fri, Oct 31

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$242 Roundtrip, found 5 days ago

$242

Roundtrip

found 5 days ago

Select United flight, departing Tue, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Oct 31, priced at $242 found 5 days ago

Mon, Jul 21 - Tue, Jul 29

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$244 Roundtrip, found 20 hours ago

$244

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Tue, Jul 29, priced at $244 found 20 hours ago

Tue, May 13 - Wed, May 14

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$253 Roundtrip, found 20 hours ago

$253

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Tue, May 13 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Wed, May 14, priced at $253 found 20 hours ago

Fri, Jun 20 - Wed, Jun 25

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$254 Roundtrip, found 3 days ago

$254

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Fri, Jun 20 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Wed, Jun 25, priced at $254 found 3 days ago

Wed, Sep 3 - Thu, Sep 18

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$257 Roundtrip, found 5 days ago

$257

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Wed, Sep 3 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Thu, Sep 18, priced at $257 found 5 days ago

Tue, Jul 1 - Tue, Jul 8

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$258 Roundtrip, found 5 days ago

$258

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, Jul 1 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Tue, Jul 8, priced at $258 found 5 days ago

Tue, May 13 - Wed, May 14

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$260 Roundtrip, found 20 hours ago

$260

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Tue, May 13 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Wed, May 14, priced at $260 found 20 hours ago

Mon, Jul 21 - Fri, Jul 25

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$264 Roundtrip, found 20 hours ago

$264

Roundtrip

found 20 hours ago

Select Spirit Airlines flight, departing Mon, Jul 21 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Fri, Jul 25, priced at $264 found 20 hours ago

Fri, Jul 4 - Tue, Jul 8

DCA

Ronald Reagan Washington National

PDX

Portland Intl.

$279 Roundtrip, found 5 days ago

$279

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Fri, Jul 4 from Ronald Reagan Washington National to Portland Intl., returning Tue, Jul 8, priced at $279 found 5 days ago

Wed, Sep 3 - Thu, Sep 18

BWI

Baltimore Washington Intl. Thurgood Marshall

PDX

Portland Intl.

$307 Roundtrip, found 5 days ago

$307

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Wed, Sep 3 from Baltimore Washington Intl. Thurgood Marshall to Portland Intl., returning Thu, Sep 18, priced at $307 found 5 days ago

Thu, Jul 10 - Thu, Jul 17

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$367 Roundtrip, found 3 days ago

$367

Roundtrip

found 3 days ago

Select United flight, departing Thu, Jul 10 from Washington Dulles Intl. to Portland Intl., returning Thu, Jul 17, priced at $367 found 3 days ago

Tue, Jul 22 - Sat, Jul 26

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$376 Roundtrip, found 20 hours ago

$376

Roundtrip

found 20 hours ago

Select Hawaiian Airlines flight, departing Tue, Jul 22 from Washington Dulles Intl. to Portland Intl., returning Sat, Jul 26, priced at $376 found 20 hours ago

Thu, Jul 10 - Thu, Jul 17

IAD

Washington Dulles Intl.

PDX

Portland Intl.

$407 Roundtrip, found 3 days ago

$407

Roundtrip

found 3 days ago

Select United flight, departing Thu, Jul 10 from Washington Dulles Intl. to Portland Intl., returning Thu, Jul 17, priced at $407 found 3 days ago