United Airlines
UA1263Ontario to Denver
United Airlines flight UA1263 flies from Ontario (ONT) to Denver (DEN), 1,316 km. Over August 2025 to July 2026 it usually arrives about 7 minutes late: 81% of 439 flights arrived within 15 minutes of schedule and 1.4% were cancelled (US Department of Transportation data).
On-time record, last 12 months
81%
on time (within 15 min)
11%
more than 30 min late
1.4%
cancelled
+7 min
average arrival vs schedule
Every operation of UA1263, August 2025 to July 2026: 439 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA1263
- Ontario (ONT) to Denver (DEN)206 flights
- Eugene (EUG) to Denver (DEN)86 flights
- Seattle Tacoma (SEA) to Denver (DEN)53 flights
- Denver (DEN) to Madison (MSN)37 flights
- Denver (DEN) to Los Angeles (LAX)36 flights
- Denver (DEN) to Wichita Eisenhower National (ICT)16 flights
- Los Angeles (LAX) to Boston (BOS)3 flights
- Denver (DEN) to Seattle Tacoma (SEA)2 flights
Other flights from Ontario to Denver
More about Ontario (ONT) and Denver (DEN).
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