$75 Find Cheap Frontier Flights from Portland to San Diego

When to Book Flights with Frontier from Portland to San Diego

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

  Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $134 return. The next cheapest options are Spirit Airlines and Undisclosed Carrier, with return flights costing on average $136 and $249 respectively.

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

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

• Does Frontier fly direct to San Diego from Portland?

  No, Frontier does not fly the route directly.

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

  On average, the cheapest day of the week to fly from Portland to San Diego with Frontier is Tuesday, when prices are around $40. The most expensive day is generally Saturday, where the average price is around $60.

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

  The cheapest month for Frontier flights to San Diego from Portland is generally January, where plane tickets cost $50 on average. If possible, try to avoid the most expensive months of April and June, where tickets cost $129 and $129 respectively.