London (LCY) to Chicago (ORD) business class reward flights

ORD → LCY

Lowest seen in the last 14 daysPlus fees$799.49Program

Air France-KLM Flying BlueLight fareAirline

KLMDepartingThu, Nov 12

Last checked 13d agoChecked 8 Oct 2026, 15:19 UTC

Which program and airline costs you least

London to Chicago in business class starts at 60K miles plus $799.49 — KLM through Air France-KLM Flying Blue. British Airways through Atmos Rewards charges the least cash — $424.09 — but wants 85K Atmos points.

Every way to book LCY to ORD with miles or points
Airline	Program			Book
KLMvia AMSlast seen 8 Oct, not re-checked sinceAir France-KLM Flying Blue	Air France-KLM Flying BlueLight fare	Fewest miles60Kplus $799.49	$799.49
British Airwaysvia DUB, PHLlast seen 13 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	85K Atmos pointsplus $424.09	Lowest fees$424.09

Where the space is over the next 60 days

Dashed days are prices last seen more than 3 days ago and not re-checked since.

LCY to ORD in business class: the facts

Over the next 60 days we hold business class seats from London to Chicago on 50 of the 50 departure days we have checked so far (10 days are not checked yet), through 2 programs. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat. Data updated October 13, 2026.

Air France-KLM Flying Blue
Days with space
50 of 50 checked
Lowest
60,000 miles
Typical day
144,500 miles
Cash on top
$799 to $829
Atmos Rewards
Days with space
7 of 50 checked
Lowest
85,000 Atmos points
Typical day
85,000 Atmos points
Cash on top
$424 to $433

LCY to ORD business class seats per program over the next 60 days
Program	Days with space	Lowest	Typical day	Cash on top
Air France-KLM Flying Blue	50 of 50 checked	60,000 miles	144,500 miles	$799 to $829
Atmos Rewards	7 of 50 checked	85,000 Atmos points	85,000 Atmos points	$424 to $433

Nonstop or with a connection

No nonstop seats in the window. With a connection on British Airways and KLM.

How to book it

Air France-KLM Flying Blue books on airfrance.fr: sign in there, search LCY to ORD in business class on a date with space, and pay in miles with the cash on top (from $799).
Atmos Rewards books on alaskaair.com: sign in there, search LCY to ORD in business class on a date with space, and pay in Atmos points with the cash on top (from $424).

MilesZone finds the seat; it does not book it or take payment.

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Every route we watch from London (LCY)

Get told the moment a LCY → ORD seat opens.

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Email only. Searching this route stays free for departures in the next 60 days.