Find a great deal and save up to 78% 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 Maine to Portugal within the next two weeks, with the cheapest ticket starting at $1,313.
Due to multiple factors, expect to potentially pay more when booking in August. For low rates, February can be a great choice for travel to Portugal. Flights to Portugal from Maine in February are about $922 on average during February, but can be found for as low as $570.