Cheap flights from Barcelona-El Prat Airport to Illinois from $444

The cheapest month to fly to Illinois from Barcelona-El Prat Airport is in February. Flight prices, which tend to average around $524, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $610.

The cheapest day to depart from Barcelona-El Prat Airport to Illinois is on a Sunday when prices can be found for as low as $624. Flights from Barcelona-El Prat Airport to Illinois on a Wednesday will generally be more expensive and average around $1,136. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Barcelona-El Prat Airport to Illinois during this time can be as low as $776. Flights in the afternoon are often more expensive with an average ticket price of $1,033.

Fly from Barcelona-El Prat to Chicago O'Hare Intl for the best Barcelona-El Prat - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Barcelona-El Prat Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $739 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Barcelona-El Prat Airport for as low as $696 on momondo.

There are 3 cabin classes available to choose from on Barcelona-El Prat Airport to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Finnair and Delta are the most popular carriers operating from Barcelona-El Prat to Illinois

United Airlines, Iberia and British Airways are the top three most popular airlines that fly to Illinois from Barcelona-El Prat Airport according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

The number of flights available between Barcelona-El Prat Airport and Illinois is 3 per day as of November 2026. The most frequent departure time is 3:00PM, with 100% of daily flights leaving in the afternoon.

As of November 2026, 21 flights take off from Barcelona-El Prat Airport and land in Illinois each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.