American Airlines

AA1239Boston to Chicago

Name: American Airlines AA1239 Boston to Chicago: on-time record
Creator: TripStow
License: https://tripstow.com/notices

American Airlines flight AA1239 flies from Boston (BOS) to Chicago O'Hare (ORD), 1,391 km. Over August 2025 to July 2026 it usually arrives right on schedule: 86% of 370 flights arrived within 15 minutes of schedule and 1.6% were cancelled (US Department of Transportation data).

On-time record, last 12 months

86%

on time (within 15 min)

more than 30 min late

1.6%

cancelled

-1 min

average arrival vs schedule

Every operation of AA1239, August 2025 to July 2026: 370 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as AA1239

Boston (BOS) to Chicago O'Hare (ORD)165 flights
Houston (IAH) to Dallas-Fort Worth (DFW)44 flights
Los Angeles (LAX) to Boston (BOS)36 flights
San Antonio (SAT) to Dallas-Fort Worth (DFW)30 flights
Miami (MIA) to Atlanta (ATL)22 flights
Chicago O'Hare (ORD) to Dallas-Fort Worth (DFW)19 flights
Phoenix Sky Harbor (PHX) to Dallas-Fort Worth (DFW)19 flights
Charlotte Douglas (CLT) to Cleveland Hopkins (CLE)15 flights
Dallas-Fort Worth (DFW) to Oklahoma City (OKC)10 flights
Oklahoma City (OKC) to Dallas-Fort Worth (DFW)10 flights

Other flights from Boston to Chicago

UA1015 UA1032 UA1170 UA1177 UA1282 UA1301 UA1314 UA1349 UA1414 UA1475 UA1691 UA1712

More about Boston (BOS) and Chicago O'Hare (ORD).

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