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Boston (BOS) to Chicago (ORD)

864mi
1,391 km751 nm

Flight time

≈ 2h 32m

Bearing

274° W

Boston (BOS) to Chicago (ORD) is 864 miles (1,391 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: BOS → ORDBOSORD

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What actually flies BOS–ORD

US DOT T-100 · filed data

In April 2026, American Airlines operated the most departures, one of 7 carriers flying nonstop BOS–ORD; the Boeing 737-800 was the most common aircraft at 30% of departures; flights ran 79% full.

Departures

1,251

April 2026

Seats

191,440

both directions

Passengers

150,331

both directions

Load factor

78.5%

passengers ÷ seats

Who flies BOS–ORD?

American Airlines operated the most nonstop BOS–ORD departures in April 2026 (448), one of 7 carriers on the route.

  • AA

    American Airlines

    448 departures · 72,140 seats

    78.4%

    Load

  • UA

    United Airlines

    412 departures · 75,913 seats

    78.4%

    Load

  • DL

    Delta Air Lines

    160 departures · 20,906 seats

    78.6%

    Load

  • YX

    Republic Airways

    137 departures · 10,346 seats

    86.5%

    Load

  • B6

    JetBlue Airways

    79 departures · 11,079 seats

    72.0%

    Load

  • MQ

    Envoy Air

    14 departures · 1,042 seats

    84.7%

    Load

  • SVW

    Global Jet Luxembourg

    1 departures · 14 seats

    0.0%

    Load

What plane flies BOS–ORD?

In April 2026, the Boeing 737-800 flew 30% of BOS–ORD departures — more than any other aircraft type.

How has BOS–ORD traffic changed?

Nonstop BOS–ORD departures fell from 1,286 in May 2025 to 1,251 in April 2026.

Monthly nonstop BOS–ORD traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • May 2025

    1,286 departures · 165,775 passengers

    88.4%

    Load

  • June 2025

    1,330 departures · 182,805 passengers

    90.2%

    Load

  • July 2025

    1,302 departures · 182,518 passengers

    92.5%

    Load

  • August 2025

    1,334 departures · 188,909 passengers

    93.2%

    Load

  • September 2025

    1,310 departures · 176,373 passengers

    86.8%

    Load

  • October 2025

    1,382 departures · 196,001 passengers

    90.0%

    Load

  • November 2025

    1,222 departures · 144,373 passengers

    83.7%

    Load

  • December 2025

    1,104 departures · 125,546 passengers

    84.3%

    Load

  • January 2026

    936 departures · 95,797 passengers

    83.2%

    Load

  • February 2026

    940 departures · 93,534 passengers

    79.1%

    Load

  • March 2026

    1,124 departures · 127,987 passengers

    86.1%

    Load

  • April 2026

    1,251 departures · 150,331 passengers

    78.5%

    Load

By direction

The DOT files each direction separately — they rarely match.

ORD → BOS

77.7% full

630 departures · 74,634 passengers

BOS → ORD

79.4% full

621 departures · 75,697 passengers

Nonstop BOS–ORD traffic has been filed with the US DOT since 2025.

Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.

The airports

BOS

Boston

US

Boston Logan International Airport

Coordinates

42.36°N, 71.01°W

Hemisphere

N · W

ORD

Chicago

US

Chicago O'Hare International Airport

Coordinates

41.98°N, 87.90°W

Hemisphere

N · W

Frequently asked

How far is Boston (BOS) from Chicago (ORD)?

BOS to ORD is 864 miles (1,391 km / 751 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from BOS to ORD?

A nonstop covers the 864-mile great-circle distance in roughly 2h 32m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies BOS–ORD?

In April 2026, the Boeing 737-800 flew the largest share of departures (30.1%), followed by the Airbus A319 (18.3%).

What mileage do I earn flying BOS–ORD?

Distance-based programs credit off the 864-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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