Cheap flights from England to Illinois from $395

The cheapest month to fly to Illinois from England is in February. Flight prices, which tend to average around $664, 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 $741.

The cheapest day to depart from England to Illinois is on a Friday when prices can be found for as low as $899. Flights from England to Illinois on a Sunday will generally be more expensive and average around $1,104. 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 at noon. Flights from England to Illinois during this time can be as low as $919. Flights in the afternoon are often more expensive with an average ticket price of $991.

Fly from London Heathrow to Chicago O'Hare Intl for the best England - Illinois flight prices

You are more likely to see cheaper flights to Illinois from England when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $893 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from England for as low as $809 on momondo.

There are 4 cabin classes available to choose from on England to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

SWISS, United Airlines, and Austrian Airlines are the most popular carriers operating from England to Illinois

British Airways, Aer Lingus and Lufthansa are the top three most popular airlines that fly to Illinois from England according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 9 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 England and Illinois is 35 per day as of October 2026. The most frequent departure time is 11:00AM, with 56% of daily flights leaving at noon.

251 flights are operational weekly from England to Illinois as of October 2026. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.