Cheap flights from San Diego to Portugal from $395

The cheapest month to fly to Portugal from San Diego is in January. Flight prices, which tend to average around $604, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from San Diego during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $604.

You are more likely to see cheaper flights to Portugal from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $773 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from San Diego for as low as $688 on momondo.

KLM, United Airlines, and Austrian Airlines are the most popular carriers operating from San Diego to Portugal

British Airways, United Airlines and Delta are the top three most popular airlines that fly to Portugal from San Diego according to our data. British Airways is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 8 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.