Flights from Philadelphia to Lake Oswego

Cheapest flights from Philadelphia

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.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
United
United
Frontier Airlines
Frontier Airlines
Frontier Airlines
American Airlines
United
Spirit Airlines
United
Hawaiian Airlines
American Airlines
Alaska Airlines