$123 Find Cheap United Airlines Flights from Portland to San Diego

When to Book Flights with United Airlines from Portland to San Diego

• Is United Airlines the cheapest airline to fly with from Portland to San Diego?

  With an average price of $376 return, United Airlines is not the cheapest airline to fly from Portland to San Diego with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $134 on average.

• What is the cheapest United Airlines flight from Portland to San Diego?

  In the last 3 days, the lowest price for a flight with United Airlines from Portland to San Diego was $187 for a return flight and $88 for a one-way flight.

• Does United Airlines fly direct to San Diego from Portland?

  No, United Airlines does not fly the route directly.

• What’s the cheapest day of the week to fly from Portland to San Diego with United Airlines?

  On average, the cheapest day of the week to fly from Portland to San Diego with United Airlines is Monday, when prices are around $76. The most expensive day is generally Thursday, where the average price is around $184.

• What’s the cheapest month to fly from Portland to San Diego with United Airlines?

  The cheapest month for United Airlines flights to San Diego from Portland is generally September, where plane tickets cost $118 on average. If possible, try to avoid the most expensive months of March and February, where tickets cost $313 and $474 respectively.