Observation decks in Chicago, compared

The short answer: Chicago has 2 major decks. Skydeck Chicago at Willis Tower is the highest (1,353 ft), 360 Chicago is the cheapest (from $32) — but the right pick depends on what you want: the comparison below sorts it out in a minute.
DeckHeightFromTypeThrill factorBest for
Skydeck Chicago at Willis Tower 1,353 ft $36 indoor ★★★ glass ledge — it's Chicago's definitive high view (four states on a clear day) and The Ledge remains the most extreme glass-floor experience of any major US deck, included in base admission rather than upsold
360 Chicago 1,030 ft $32 indoor ★★★ glass ledge for many visitors it's the better Chicago deck

All Chicago decks on the map

The full verdicts

Skydeck Chicago at Willis Tower GLASS LEDGE 1,353 ft · 103rd floor · from $36 The tallest observation deck in the US that's been one since 1974 — 1,353 ft up the former Sears Tower, with The Ledge: all-glass boxes that slide you 4. 360 Chicago GLASS LEDGE 1,030 ft · 94th floor · from $32 The John Hancock's 94th-floor deck, rebranded 360 Chicago — lower than Skydeck but positioned where the view is: the skyline, the lakefront beaches, and Navy Pier all in one south-facing frame, plus TILT, which leans you out over Michigan Avenue at 30 degrees.

Chicago observation decks — quick answers

2 major public observation decks: 360 Chicago, Skydeck Chicago at Willis Tower. Each has a full guide on this site with prices, hours, and an honest verdict.

Skydeck Chicago at Willis Tower at 1,353 ft (103rd floor).

360 Chicago, with tickets from $32. Prices shift with season and time slot — sunset always costs more.