Nantucket (ACK) to Chicago (ORD)
Flight time
≈ 2h 39m
Bearing
279° W
Nantucket (ACK) to Chicago (ORD) is 921 miles (1,483 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ACK–ORD
Filed traffic dataIn August 2025, SkyWest Airlines operated the most departures, one of 2 carriers flying nonstop ACK–ORD; the Embraer E175 was the most common aircraft at 100% of departures; flights ran 87% full.
Departures
21
August 2025
Seats
1,578
both directions
Passengers
1,370
both directions
Load factor
86.8%
RPM ÷ ASM
Who flies ACK–ORD?
SkyWest Airlines operated the most nonstop ACK–ORD departures in August 2025 (11), one of 2 carriers on the route.
- OO
11 departures · 818 seats
Share of departures52.4%92.8%
Load
- YX
10 departures · 760 seats
Share of departures47.6%80.4%
Load
What plane flies ACK–ORD?
In August 2025, the Embraer E175 flew 100% of ACK–ORD departures.
- Embraer E175
21 departures · 86.8% load
100.0%
How has ACK–ORD traffic changed?
Nonstop ACK–ORD departures rose from 8 in June 2025 to 21 in August 2025.
Monthly nonstop ACK–ORD traffic, trailing 12 months through August 2025. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
8 departures · 579 passengers
95.2%
Load
July 2025
22 departures · 1,431 passengers
85.6%
Load
August 2025
21 departures · 1,370 passengers
86.8%
Load
By direction
Each direction is filed separately — they rarely match.
ORD → ACK
84.6% full
11 departures · 697 passengers
ACK → ORD
89.3% full
10 departures · 673 passengers
Nonstop ACK–ORD traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through August 2025; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Nantucket (ACK) from Chicago (ORD)?
ACK to ORD is 921 miles (1,483 km / 801 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ACK to ORD?
A nonstop covers the 921-mile great-circle distance in roughly 2h 39m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ACK–ORD?
In August 2025, the Embraer E175 flew the largest share of departures (100.0%).
What mileage do I earn flying ACK–ORD?
Distance-based programs credit off the 921-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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