
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $779 (Air France) |
One-way from | $306 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $630 |
Fly from
Fly to
Route
Depart
Return
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Mon 1/11
2:45 pm-8:10 pm
3 stops45h 25m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
PortlandPorto
PDX