Skip to main content
Beginning of main content

Cheap Flights from Chicago to London $437.46

Search over 321,000 hotels worldwide and 400 airlines worldwide.
Secure incredible value with Expedia’s Price Guarantee
No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheapest Flights from Chicago to London (ORD to LHR)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.
London Airports








Interesting Facts About Flights from Chicago to London (ORD to LHR)

Question : How often are prices changing for this route?
Answer : Flight prices for ORD to LHR change much more than most routes. Remember, you can save by booking further in advance.

Question : Do travelers from Chicago typically stay in London for very long?
Answer : Over the next two months, passengers from ORD to LHR are planning on staying for eight days on average.

Question : Which airline can you expect delays with on this route?
Answer : If you decide to book your flight with United Airlines, keep an eye on your departure time. United Airlines flights from O'Hare International Airport (ORD) to London Heathrow Airport (LHR) are late 32% of the time.

Question : Would you be willing to change your travel days if it saved you money?
Answer : In February, Monday is your lowest-cost day to fly. Flexibility is paramount when booking travel plans in order to keep costs down.

Question : How many departure times from O'Hare International Airport (ORD) to London Heathrow Airport (LHR) are there on a daily basis?
Answer : On average, there are five options. Compared to the average route with 31 flight times, you won't have as many choices as other routes.

Question : If travelling from ORD to LHR, how long can you expect to be in the air?
Answer : This flight takes 7 hours and 44 minutes on average.

Question : Is this route your best bet for getting to London with minimal delays?
Answer : ORD to LHR currently scores 2.6 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delayed minutes. With 2.6 stars, you should plan on being extra flexible with your arrival plans.