Cheap flights from Portugal to Chicago from $366

The month of February is, on average, the cheapest month to fly to Chicago from Portugal, with most prices found around $750. If you’re not able to fly to Chicago in February, then August is your next best option. Flight prices from Portugal to Chicago during August average around $800.

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as $948. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to Chicago for around $1,196.

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

There are 2 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.

Historically, on average around 22% 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 140 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. Thursday 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 22% of their flights experiencing any sort of delay.