Cheap flights from Lisbon to the United States from $341

In general, February is the cheapest month to fly from Lisbon to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $641. If you aren’t able to travel during the month of February, then book flights to United States from Lisbon during January instead. Flights to United States in January, while not as cheap as those in February, still average around $648.

According to our data, Thursday is the cheapest day to fly to United States from Lisbon. The lowest ticket price found for a Thursday departure recently was $755. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $892. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $779. Try not to purchase tickets in the morning because they tend to be around $819. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Lisbon Humberto Delgado to Boston Logan Intl for the best Lisbon Humberto Delgado - United States flight prices

You are more likely to see cheaper flights to United States from Lisbon when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $686 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Lisbon for as low as $558 on momondo.

There are 3 cabin classes available to choose from on Lisbon to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

TAP AIR PORTUGAL, Delta and United Airlines are the top three most popular airlines that fly to United States from Lisbon according to our data. TAP AIR PORTUGAL is the first choice among our users, with 54% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 12 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Lisbon and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

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

Monday 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 19% of their flights experiencing any sort of delay.

As of September 2026, 28 flights take off from Lisbon and land in United States each day. The most common flight departure time for this route is 10:00AM, with 62% of daily flights taking off in the afternoon.

The number of flights available between Lisbon and United States is 199 per week as of September 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.