$266 Find Cheap Flights from Portugal to Chicago - Compare and Save

Based on KAYAK data, the cheapest day to fly to Chicago is Thursday where round-trip tickets can be as cheap as $884. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,111 on average.

The cheapest month for flights to Chicago is February, where tickets cost $695 on average for return flights. On the other hand, the most expensive months are January and August, where the average cost of tickets from Portugal is $1,137 and $1,089 respectively. For one-way flights, the best month to travel is April with an average price of $623.

The cheapest time of day to fly to Chicago is generally in the afternoon, when round-trip flights cost $933 on average. The most expensive time of day to fly to Chicago is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,056.

If you’re looking for cheap airfare to Chicago, 25% of our users found tickets to Chicago for the following prices or less: From Lisbon $983 round-trip.

There are 3 airports in Chicago: Chicago O'Hare Airport (ORD), Chicago Midway Airport (MDW) and Chicago Greater Rockford Airport (RFD). The busiest airport is Chicago O'Hare Airport (ORD), with 94% of all flights arriving there.

The duration of your flight to Chicago depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to Chicago on KAYAK are from Lisbon, which takes 9h 25m, Porto, which takes 12h 05m, and Faro, which takes 13h 30m.

There are around 4,327 direct flights from within Portugal to Chicago every day. Most flights depart in the morning, with 49% of flights departing in the morning.

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Chicago. Instead, there are 11 long-haul flights (6-12 hour flight duration), with the most arriving from Lisbon.