Business class · ORD to LHR
Chicago to London business class from O’Hare for less
Book the same seat with miles. Every nonstop award seat seats.aero has seen on the route, day by day, priced in dollars: the miles at our rate plus the taxes and surcharges you pay on top.
3,941 milesAbout 8h nonstop3 airlines nonstop
Lowest total seen, one way
–Award seats by day
Which day is cheapest to fly Chicago to London
The buyflightmiles take
Cheapest seen: American AAdvantage on American Airlines, $1,357 on Wed, Dec 30, with seats on 85 of 89 days.
October 2026
Loading the calendar…
lowest total in the window · – no nonstop seat seen · nonstop seats from seats.aero, pulled October 14, one way, one passenger; we confirm the seat and price before you pay
Fri, October 16, business class
By program
Ways to book Chicago to London business class
Each program and airline that had a seat, at its lowest total seen. Pick the date to see that day's flights.
FAQ
Chicago to London business class questions
What is the cheapest way to fly business class from Chicago to London?
The lowest business class total is $1,357 one way, on December 30 and December 31: American Airlines AA90 booked with 79,500 American AAdvantage miles and $6 in taxes. Seats were seen on 89 of the 89 days checked. Pick any day in the calendar above to see every nonstop flight with an award seat and what it comes to with miles from us.
Which programs have award seats on this route?
Of the programs we sell, in business class: American AAdvantage on American Airlines on 85 days from $1,357; American AAdvantage on British Airways on 21 days from $1,711; British Airways Avios on British Airways on 30 days from $1,994; Alaska Atmos Rewards on British Airways on 10 days from $2,104; Qantas Frequent Flyer on American Airlines on 1 day from $3,064; Qantas Frequent Flyer on British Airways on 24 days from $3,214, and 1 more, listed under Ways to book. Counted over the 89 days in the calendar.
How much do the taxes and surcharges add?
It depends on the airline flying the seat, not the program. On a typical seat one way: United $6, American Airlines $6, British Airways $734. Some airlines add a carrier surcharge to award tickets on their own flights; the others charge little more than government taxes. Every total on this page already includes them.
What is the best business class from Chicago to London?
British Airways, American and United fly it nonstop from O'Hare, all with a lie-flat business seat. Chicago is a hub for both American and United, so there are several flights a day to pick from.
What about a return?
The calendar covers Chicago to London one way. In miles a return is two one-ways with no return discount, and the taxes on the way back can differ. Tell us both dates and we price and book the pair.
Can I use miles I already have?
Yes. On any program under Ways to book, tap “Already have some miles?” and enter your balance: it reprices to the cost of the shortfall. Our minimum order applies, so a small shortfall may leave you with spare miles. AAdvantage is the exception: we deliver it as a ready account with the miles already in it, so it cannot be combined with your own balance.
Do you show programs you don't sell?
No. The dollar prices only cover programs we sell, so seats in other programs are left out, and some of them can be cheaper in miles. If you hold those, use them, and if you'd rather we found and booked the seat for you, ask us.