Cheap flights from the United States to Lisbon from $338

In general, January is the cheapest month to fly from United States to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $595. If you are unable to visit Lisbon during the month of January, then departing from United States during the month February is also very affordable. Most momondo users find prices during this month for around $601.

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $683. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from United States to Lisbon for around $796.

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $693. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $731 on average. Flights to Lisbon from United States in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Los Angeles to Lisbon Humberto Delgado for the best United States - Lisbon Humberto Delgado flight prices

You are more likely to see cheaper flights to Lisbon from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $737 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from United States for as low as $736 on momondo.

British Airways, KLM, and Delta are the most popular carriers operating from United States to Lisbon Humberto Delgado

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Lisbon from United States according to our data. TAP AIR PORTUGAL is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 26 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between United States and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 147 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 20% of their flights experiencing any sort of delay.

As of May 2026, there are 34 flights per day flying from United States to Lisbon. The most common time of day flights depart is 8:00PM, with 79% of flights taking off in the evening.

244 flights are operational weekly from United States to Lisbon as of May 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.