Cheap Flights from London to Chicago
Browse current best options from London. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
London
RatePunk searches hundreds of travel sites at once for deals on flights to Chicago
Prices updated today
485 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated Nov 2, 2026.)
Today’s best flight deals from London to Chicago
Explore current cheapest deals departing from London to Chicago
2026-11-12 – 2026-11-26
LON - Chicago
87% AI deal score
£519
£405
Round trip
2026-11-12 – 2026-11-25
LON - Chicago
86% AI deal score
£519
£417
Round trip
2026-11-17 – 2026-11-27
LON - Chicago
85% AI deal score
£525
£431
Round trip
2026-11-19 – 2026-11-27
LON - Chicago
85% AI deal score
£528
£433
Round trip
2026-11-17 – 2026-11-25
LON - Chicago
85% AI deal score
£529
£438
Round trip
2026-11-19 – 2026-11-25
LON - Chicago
81% AI deal score
£540
£450
Round trip
2026-11-11 – 2026-11-29
LON - Chicago
79% AI deal score
£480
£453
Round trip
2026-11-06 – 2026-11-08
LON - Chicago
90% AI deal score
£598
£453
Round trip
2026-11-06 – 2026-11-11
LON - Chicago
88% AI deal score
£562
£453
Round trip
2026-11-06 – 2026-11-13
LON - Chicago
83% AI deal score
£541
£453
Round trip