Cheap flights from Los Angeles to Porto from $337

The month of February is, on average, the cheapest month to fly to Porto from Los Angeles, with most prices found around $625. If you aren’t able to travel during the month of February, then book flights to Porto from Los Angeles during January instead. Flights to Porto in January, while not as cheap as those in February, still average around $682.

You are more likely to see cheaper flights to Porto from Los Angeles when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $850 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Los Angeles for as low as $781 on momondo.

You could potentially save up to 3% on your flight if you consider stops on a Los Angeles to Porto flight.

As of September 2026, prices for Los Angeles to Porto flights are approximately 20% cheaper when compared to flights at the same time last year.

United Airlines, Delta, and American Airlines are the most popular carriers operating from Los Angeles Los Angeles to Porto

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Porto from Los Angeles according to our data. TAP AIR PORTUGAL is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 8 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

Lisbon (LIS) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Casablanca (CMN) offer the lowest average round-trip price of $585.

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 13h 03m.

Istanbul (IST) has the shortest average layover time for this route: 1h 20m.