Cheap flights from Illinois to England from £169

The cheapest month to fly to England from Illinois is in November. Flight prices, which tend to average around £467, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to England from Illinois during September instead. Flights to England in September, while not as cheap as those in November, still average around £479.

The cheapest day to depart from Illinois to England is on a Sunday when prices can be found for as low as £533. The most expensive day to fly to England is Thursday, with ticket prices averaging around £774.

Flying to England from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as £621 when looking at flights departing in the evening. Flights to England are more costly in the afternoon, with an average ticket price of £734. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to England from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to England for around £607 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to England from Illinois for as low as £535 on momondo.

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

British Airways, Virgin Atlantic, and Delta are the most popular carriers operating from Illinois to England

British Airways, Aer Lingus and United Airlines are the top three most popular airlines that fly to England from Illinois according to our data. British Airways is the first choice among our users, with 45% of people opting to fly with this airline when travelling to England. Keep in mind that there are 6 different airlines that fly to England on a routine basis, so you have a few additional options to choose from.

As of June 2026, 60 flights take off from Illinois and land in England each day. The most common flight departure time for this route is 18:00, with 77% of daily flights taking off in the evening.

As of June 2026, there are 425 flights per week flying from Illinois to England. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.