Cheap flights from Spain to Illinois from $333

The cheapest month to fly to Illinois from Spain is in February. Flight prices, which tend to average around $533, 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 January is also cheap. Prices for this month can be found on momondo for an average of $602.

The cheapest day to depart from Spain to Illinois is on a Thursday when prices can be found for as low as $655. Flights from Spain to Illinois on a Saturday will generally be more expensive and average around $934. 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 afternoon. Flights from Spain to Illinois during this time can be as low as $759. Flights in the morning are often more expensive with an average ticket price of $864.

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

You are more likely to see cheaper flights to Illinois from Spain when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $763 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Spain for as low as $659 on momondo.

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

TAP AIR PORTUGAL, British Airways, and American Airlines are the most popular carriers operating from Spain to Illinois

Iberia, United Airlines and Finnair are the top three most popular airlines that fly to Illinois from Spain according to our data. Iberia is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 8 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 Spain and Illinois is 10 per day as of November 2026. The most frequent departure time is 12:00PM, with 76% of daily flights leaving in the afternoon.

The number of flights available between Spain and Illinois is 72 per week as of November 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.