A nighttime cityscape with illuminated buildings, a bridge, and reflections on the water.

$354 Cheap United flights Missoula (MSO) to Portland (PDX)

View $354 flight on Thu, Sep 17, 2026Opens in a new window

$354 Cheap United flights Missoula (MSO) to Portland (PDX)

Prices were available within the past 7 days and start at $354 for one-way flights and $552 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 17 - Tue, Sep 22
MSO
Missoula
PDX
Portland
$552 Roundtrip, found 21 hours ago
$552
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Sep 17 from Missoula to Portland, returning Tue, Sep 22, priced at $552 found 21 hours ago

Travel information

Origin airport
Missoula Intl.
Destination airport
Portland Intl.
Airlines serving
Alaska Airlines, Delta, United
Popular airline
United
Distance
666 km
Average flight time
1 hour 35 mins

Explore a world of travel with Expedia