ORD → ACKChicago to Nantucket

live

Direct flights from Chicago (ORD) to Nantucket (ACK): 2 nonstop departures observed each week across 1 airline. The median arrival is 95 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 1,483 km, an estimated 2 hours 24 minutes in the air. Measured by Pro Flight Search from live flight boards at Chicago and Nantucket. Updated 19 September 2026 at 13:53 UTC.

ORD Chicago smooth · +4
ACK Nantucket tracking
1,483 km · ~2h 24m est.
departs 11:592x weekly
Under pressure · 1 airline · 2x weekly · nonstop
65 / 100

route health from live ORD and ACK delay boards

Median arrival delay is +95 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+95 minacross the last 2 operated legs
Flight time~2h 24mestimated from route distance
Weekly departures2x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
United AirlinesUA

Flights UA5454 11:59 Sa Su

History

operated legs · board outcomes
09-13UA5454departed+95
09-12UA5454departed−6

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ORDChicago +4 min smooth 🌫 overcast · ENE 3 kt Full ORD delay board →
ACKNantucket tracking Full ACK delay board →

How the Chicago to Nantucket route actually runs

Pro Flight Search records official board updates for nonstop ORD to ACK flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · 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 — Chicago (ORD) to Nantucket (ACK) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ORD-ACK
How we measure this →

ORD to ACK questions

Is ORD–ACK running on time right now?

Some delays possible. The departure side at ORD is the weaker end, route health score 65/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from ORD to ACK?

Great-circle distance is 1,483 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 135–157 min gate-to-gate on this route.

How often does ORD–ACK fly?

United Airlines runs the route with about 2 flights a week (sat–sun). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at ORD and arrival-side delay at ACK, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.