UA671

UA671 (United Airlines) is a multi-stop service on 11 routes, busiest Denver to Santa Barbara. Of 969 departures recorded from October 2024 to July 2026, 87.8% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January3162▲ 100.0%
February4435▼ 20.5%
March3656▲ 55.6%
April3060▲ 100.0%
May3162▲ 100.0%
June3560▲ 71.4%
July62620.0%
August49––
September30––
October37–in progress
November60––
December46––
Year to date (Jan–Jul)269397▲ 47.6%

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January80.0%90.0%▲ 12.5%
February79.6%91.4%▲ 14.9%
March91.7%83.9%▼ 8.4%
April93.3%91.7%▼ 1.8%
May90.3%83.9%▼ 7.1%
June88.6%93.3%▲ 5.4%
July80.3%82.3%▲ 2.4%
August91.7%––
September96.7%––
October91.9%–in progress
November88.3%––
December75.6%––
Year-to-date average (Jan–Jul)86.3%88.1%▲ 2.1%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January12▲ 100.0%
February00–
March00–
April00–
May00–
June00–
July10▼ 100.0%
August1––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)220.0%

according to the US BTS · October 2024 → July 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 99.4% 963
  • Cancelled 0.6% 6

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

On time, leg by leg

  1. DEN–SBA420 86.9%
  2. JAX–DEN165 90.9%
  3. BIL–DEN124 87.8%
  4. XNA–DEN54 84.6%
  5. ORF–DEN37 94.6%
  6. MIA–DEN37 97.3%
  7. SYR–DEN36 85.3%
  8. CLT–ORD35 85.7%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

8
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 95.0% 0
November 2024 30 30 93.3% 0
December 2024 31 31 93.6% 0
January 2025 31 30 80.0% 1
February 2025 44 44 79.6% 0
March 2025 36 36 91.7% 0
April 2025 30 30 93.3% 0
May 2025 31 31 90.3% 0
June 2025 35 35 88.6% 0
July 2025 62 61 80.3% 1
August 2025 49 48 91.7% 1
September 2025 30 30 96.7% 0
October 2025 37 37 91.9% 0
November 2025 60 60 88.3% 0
December 2025 46 45 75.6% 1
January 2026 62 60 90.0% 2
February 2026 35 35 91.4% 0
March 2026 56 56 83.9% 0
April 2026 60 60 91.7% 0
May 2026 62 62 83.9% 0
June 2026 60 60 93.3% 0
July 2026 62 62 82.3% 0

How to read this chart

Loading the guide…