Cheap flights from San Diego to Portland from $100

The cheapest month to fly to Portland from San Diego is in January. Flight prices, which tend to average around $197, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until April to fly from San Diego, when ticket prices are also cheap, with an average price of $254.

The cheapest day to depart on your flight to Portland is on a Friday when prices can be found for as low as $295. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $368.

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $268. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $326 per ticket.

Fly from San Diego to Portland for the best San Diego - Portland flight prices

You are more likely to see cheaper flights to Portland from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from San Diego for as low as $203 on momondo.

No. A direct flight is the cheapest option for a flight between San Diego to Portland.

As of May 2026, prices for San Diego to Portland flights are approximately 31% more expensive when compared to flights at the same time last year.

Delta and Alaska Airlines are the most popular carriers operating from San Diego to Portland

Alaska Airlines, Frontier and Hawaiian Airlines are the top three most popular airlines that fly to Portland from San Diego according to our data. Alaska Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 8 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Seattle (SEA) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Flights via Seattle (SEA) offer the lowest average round-trip price of $207.

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 5h 10m.

Seattle (SEA) has the shortest average layover time for this route: 1h 00m.

6 flights are operational daily from San Diego to Portland as of May 2026. The most popular departure time for this route is 11:00AM, with 55% of flights per day taking off at noon.

As of May 2026, 42 flights take off from San Diego and land in Portland each week. The most common flight departure day for this route is Sat, with 21% of weekly flights taking off on this day.