Find a great deal and save up to 11% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Portland to Guam within the next two weeks, with the cheapest ticket starting at $1,858.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, June can be a great choice for travel to Guam. Flights to Guam from Portland in June are about $1,753 on average during June, but can be found for as low as $1,349.
When flying from Portland to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.