UA5539United Airlines · ORD → GRR
live · 33m ago
Route confirmed United Airlines

UA5539 ChicagoORD · 05:59 Grand RapidsGRR · 08:16

UA5539 by United Airlines flies from Chicago (ORD) to Grand Rapids (GRR) for the Tue, Aug 18 departure.

Right nowEn route to Grand Rapids · off blocks 05:47 · 12 min early
07:23

estimated arrival at GRR · local time

En routeUA5539 · position estimated
ORDChicagoGRRGrand Rapids
Estimated from the boardsarr 07:23

Board estimate · gate and arrival times. Off blocks 05:47 · typical taxi-out at ORD ≈ 8.1 min.

Typical gate push−12 minmedian posted departure
Typical arrival−53 minmedian over 1 operations
Wins back in air~41 minmedian gate push vs arrival · how planes make up time →

The route today

live boards
ORDChicagoModerate riskORD delay board →
GRRGrand RapidsHigh riskGRR delay board →
ORD→GRRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
50%Chance of 15+ min delay
2.0%Chance of cancellation
+17 minAvg hub delay right now

Conditions at ORD and GRR are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Chicago to Grand Rapids flights today

same route · United Airlines
UA4460departs 05:59
UA4592departs 05:59
UA4175departs 07:45
UA5665departs 07:45
UA5668departs 08:50
UA1297departs 10:37

If UA5539 is cancelled, these are the other United Airlines nonstop flights from Chicago to Grand Rapids on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA5539 actually runs

Pro Flight Search has tracked every published board update for UA5539 across the ORD and GRR boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: departed -12 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA5539 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
08-18ORD 05:59 05:47 (−12)GRR 08:16 07:23 (−53)

Board clocks recorded as ORD and GRR published them.

Planning around UA5539? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — UA5539 Chicago to Grand Rapids on-time performance, measured from the ORD and GRR airport boards.

Canonical URL
https://proflightsearch.com/flight/UA5539
How we measure this →