United Airlines

UA1639St. Louis to Chicago

Name: United Airlines UA1639 St. Louis to Chicago: on-time record
Creator: TripStow
License: https://tripstow.com/notices

United Airlines flight UA1639 flies from St. Louis (STL) to Chicago O'Hare (ORD), 415 km. Over August 2025 to July 2026 it usually arrives about 15 minutes late: 75% of 433 flights arrived within 15 minutes of schedule and 1.4% were cancelled (US Department of Transportation data).

On-time record, last 12 months

75%

on time (within 15 min)

15%

more than 30 min late

1.4%

cancelled

+15 min

average arrival vs schedule

Every operation of UA1639, August 2025 to July 2026: 433 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as UA1639

St. Louis (STL) to Chicago O'Hare (ORD)72 flights
Denver (DEN) to St. Louis (STL)71 flights
San Francisco (SFO) to Redmond-Bend (RDM)68 flights
San Luis Obispo (SBP) to San Francisco (SFO)53 flights
Miami (MIA) to Chicago O'Hare (ORD)53 flights
San Francisco (SFO) to New Orleans (MSY)35 flights
San Francisco (SFO) to Austin Bergstrom (AUS)21 flights
Omaha (OMA) to Houston (IAH)18 flights
Houston (IAH) to Newark Liberty (EWR)18 flights
Fort Myers (RSW) to Chicago O'Hare (ORD)17 flights

Other flights from St. Louis to Chicago

OO4779 OO4885 OO4888 OO4889 OO4897 OO4924 OO4953 OO5003 OO5323 OO5359 OO5417 OO5510

More about St. Louis (STL) and Chicago O'Hare (ORD).

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