Historical clue formulations

• Chicago airport — 2026-04-27
• Windy City airport — 2026-04-26
• Midway Airport alternative — 2025-12-01
• Chicago airport — 2025-09-16
• Chicago airport named for a W.W. II ace — 2025-05-05
• Airport near the intersection of I-90 and I-294 — 2025-01-01
• Destination for the van that Kevin fails to board in "Home Alone" — 2024-12-27
• Midwest hub — 2024-12-18
• Airport with the most runways in the world (8) — 2024-06-21
• Facility formerly known as Orchard Field — 2022-11-17
• United hub — 2022-05-14
• Where the terminal dash in "Home Alone" takes place — 2022-04-07
• Midwest hub — 2022-04-06
• Busiest airport in the Midwest — 2021-04-05
• Alternative to Chicago's Midway — 2020-12-07
• Midwest air hub — 2020-09-08
• Airport for a Bull or a Bear — 2020-04-20
• Airport about 13 miles from the Loop — 2019-09-02
• Alternative to Chicago's Midway — 2019-03-18
• Chicago air hub — 2019-03-11
• Chicago airport — 2018-03-28
• Airport that J.F.K. dedicated in 1963 — 2018-02-04
• Its symbol is ORD — 2018-01-17
• United base — 2017-01-21
• Midwest hub — 2016-12-08
• One stop on Chicago's Blue Line — 2016-08-14
• Midway alternative — 2016-04-04
• Orchard Field, today — 2016-03-02
• L's end? — 2015-12-18
• American hub — 2015-12-06
• Midwest air hub — 2014-10-14
• Orchard Field, today — 2014-09-26
• Chicago airport — 2014-02-03
• Chicago air hub — 2013-12-02
• American Airlines hub — 2013-08-09
• Airport named for a naval war hero — 2013-06-27
• Site of some Chicago touchdowns — 2013-03-13
• Midwest hub — 2013-01-02
• Midway Airport alternative — 2012-02-01
• United hub — 2011-09-03
• Site of many Chicago touchdowns — 2010-08-09
• Midwest air hub — 2010-06-16
• United hub — 2009-12-17
• Bear's landing place? — 2009-10-07
• Almost 80 million people visit it yearly — 2009-04-23
• Chicago air hub — 2008-12-29
• Western end of I-190 near I-294 — 2008-10-16
• W.W. II air ace who lent his name to an airport — 2008-09-19
• Chicago air hub — 2008-09-15
• Midway alternative — 2007-11-28