O'Hare International Airport ORD to London LON flight with Icelandair

The best way to find a cheap flight ticket from O'Hare International Airport to London is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from O'Hare International Airport to London will cost around $1427 if you buy it on the day, but the cheapest tickets can be found for only $641.

Of the 123 flights that leave O'Hare International Airport for London onThu, Apr 23, 20 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Thu, Apr 23 the direct flights cover the 6363 km distance in an average of 7 h 45 m but if you time it right, some flights will get you there in just 7 h 45 m .

On Thu, Apr 23 the longest flights will take 7 h 45 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.