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
US DOT T-100 · filed 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%
passengers ÷ seats
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
SkyWest Airlines
11 departures · 818 seats
Share of departures52.4%92.8%
Load
- YX
Republic Airways
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
The DOT files each direction 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 with the US DOT 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 DOT publishes roughly three months in arrears.
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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