Cheap flights from Portugal to Chicago from $339

The month of February is, on average, the cheapest month to fly to Chicago from Portugal, with most prices found around $591. If you’re not able to fly to Chicago in February, then March is your next best option. Flight prices from Portugal to Chicago during March average around $710.

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $884. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to Chicago for around $1,205.

Our most recent data shows that the best time of day to fly to Chicago is at noon. Flights from Portugal to Chicago during this time can be as low as $932. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $1,083.

Fly from Lisbon Humberto Delgado to Chicago O'Hare Intl for the best Portugal - Chicago flight prices

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

You could potentially save up to 16% on your flight if you consider stops on a Portugal to Chicago flight.

Finnair and Iberia are the most popular carriers operating from Portugal to Chicago

TAP AIR PORTUGAL, KLM and Delta are the top three most popular airlines that fly to Chicago from Portugal 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 Chicago. Keep in mind that there are 5 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between Portugal and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 136 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning 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. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 26% of their flights experiencing any sort of delay.