Find cheap flights from Illinois to the United Kingdom from $206
Save 21% or moreCompare multiple travel sites with one search.
Track pricesNot ready to book? Create a price alert for when prices drop.
Filter your dealsChoose cabin class, free Wi-Fi and more.
Bundle and saveSave money when you bundle your flight + hotel.
Search hundreds of travel sites at once for deals on flights to the United Kingdom
Good to know
FAQs for booking flights from Illinois to the United Kingdom
Which airlines have a flexible cancellation policy for flights from Illinois to the United Kingdom due to COVID-19?
British Airways, Iberia and American Airlines have all waived their change and cancellation fees on flights from Illinois to the United Kingdom. Confirm policies on booking site.
How does KAYAK find such low prices on flights from Illinois to the United Kingdom?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to the United Kingdom.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to the United Kingdom?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United Kingdom from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to the United Kingdom?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to the United Kingdom with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to the United Kingdom?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to the United Kingdom from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.