Round Trip San Diego - Portland Flights for $137

Southwest Airlines, Alaska Airlines, and Expedia have round trip nonstop flights between San Diego and Portland for $137. These fares are basic economy, allowing a personal item and a carry-on bag but no seat selection or changes. Travel dates are available from October through March 2027, with a wide range of departure options. This represents a competitive price for nonstop flights on these routes, especially considering the distance and convenience. The deal is straightforward to redeem via Expedia, Southwest, or Alaska Airlines' websites. Given the low cost and the extensive travel window, this is a deal worth considering for flexible travelers seeking affordable nonstop options.