Flights from Washington to Alton

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.

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$189 Roundtrip, found 4 days ago

$189

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $189 found 4 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$194 Roundtrip, found 4 days ago

$194

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $194 found 4 days ago

Tue, Sep 9 - Sat, Sep 13

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$199 Roundtrip, found 4 days ago

$199

Roundtrip

found 4 days ago

Select United flight, departing Tue, Sep 9 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 13, priced at $199 found 4 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$204 Roundtrip, found 4 days ago

$204

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $204 found 4 days ago

Tue, Jul 8 - Sat, Jul 19

DCA

Ronald Reagan Washington National

PWM

Portland Intl. Jetport

$209 Roundtrip, found 6 days ago

$209

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Jul 8 from Ronald Reagan Washington National to Portland Intl. Jetport, returning Sat, Jul 19, priced at $209 found 6 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$209 Roundtrip, found 4 days ago

$209

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $209 found 4 days ago

Fri, Sep 12 - Sat, Sep 20

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$211 Roundtrip, found 4 days ago

$211

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Sep 12 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 20, priced at $211 found 4 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$213 Roundtrip, found 4 days ago

$213

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $213 found 4 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$218 Roundtrip, found 4 days ago

$218

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $218 found 4 days ago

Tue, Sep 16 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$225 Roundtrip, found 4 days ago

$225

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Sep 16 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $225 found 4 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$227 Roundtrip, found 4 days ago

$227

Roundtrip

found 4 days ago

Select Delta flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $227 found 4 days ago

Tue, Jul 8 - Sat, Jul 12

DCA

Ronald Reagan Washington National

PWM

Portland Intl. Jetport

$234 Roundtrip, found 6 days ago

$234

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Jul 8 from Ronald Reagan Washington National to Portland Intl. Jetport, returning Sat, Jul 12, priced at $234 found 6 days ago

Mon, Jul 14 - Wed, Jul 16

DCA

Ronald Reagan Washington National

PWM

Portland Intl. Jetport

$235 Roundtrip, found 6 days ago

$235

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Mon, Jul 14 from Ronald Reagan Washington National to Portland Intl. Jetport, returning Wed, Jul 16, priced at $235 found 6 days ago

Sat, Sep 13 - Wed, Sep 17

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$243 Roundtrip, found 4 days ago

$243

Roundtrip

found 4 days ago

Select United flight, departing Sat, Sep 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Sep 17, priced at $243 found 4 days ago

Tue, Sep 9 - Sat, Sep 13

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$244 Roundtrip, found 4 days ago

$244

Roundtrip

found 4 days ago

Select United flight, departing Tue, Sep 9 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 13, priced at $244 found 4 days ago

Wed, Sep 10 - Thu, Sep 18

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$249 Roundtrip, found 4 days ago

$249

Roundtrip

found 4 days ago

Select United flight, departing Wed, Sep 10 from Washington Dulles Intl. to Portland Intl. Jetport, returning Thu, Sep 18, priced at $249 found 4 days ago

Tue, Sep 9 - Sat, Sep 13

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$254 Roundtrip, found 4 days ago

$254

Roundtrip

found 4 days ago

Select United flight, departing Tue, Sep 9 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 13, priced at $254 found 4 days ago

Mon, Jul 14 - Fri, Jul 18

DCA

Ronald Reagan Washington National

PWM

Portland Intl. Jetport

$255 Roundtrip, found 6 days ago

$255

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Mon, Jul 14 from Ronald Reagan Washington National to Portland Intl. Jetport, returning Fri, Jul 18, priced at $255 found 6 days ago

Tue, Sep 9 - Sat, Sep 13

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$256 Roundtrip, found 4 days ago

$256

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Sep 9 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 13, priced at $256 found 4 days ago

Tue, Sep 9 - Sat, Sep 13

IAD

Washington Dulles Intl.

PWM

Portland Intl. Jetport

$259 Roundtrip, found 4 days ago

$259

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Sep 9 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Sep 13, priced at $259 found 4 days ago