United Airlines
UA2104Chicago to Boston
United Airlines flight UA2104 flies from Chicago O'Hare (ORD) to Boston (BOS), 1,391 km. Over August 2025 to July 2026 it usually arrives right on schedule: 86% of 352 flights arrived within 15 minutes of schedule and 1.4% were cancelled (US Department of Transportation data).
On-time record, last 12 months
86%
on time (within 15 min)
10%
more than 30 min late
1.4%
cancelled
-1 min
average arrival vs schedule
Every operation of UA2104, August 2025 to July 2026: 352 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA2104
- Chicago O'Hare (ORD) to Boston (BOS)113 flights
- Newark Liberty (EWR) to Santa Ana (SNA)37 flights
- Newark Liberty (EWR) to Charlotte Douglas (CLT)36 flights
- St. Louis (STL) to Newark Liberty (EWR)34 flights
- Savannah Hilton Head (SAV) to Newark Liberty (EWR)32 flights
- Knoxville (TYS) to Denver (DEN)24 flights
- Newark Liberty (EWR) to Portland (PDX)21 flights
- Chicago O'Hare (ORD) to Windsor Locks (BDL)21 flights
- Houston (IAH) to San Diego (SAN)16 flights
- Denver (DEN) to Philadelphia (PHL)15 flights
Other flights from Chicago to Boston
More about Chicago O'Hare (ORD) and Boston (BOS).
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