Denver (DEN) to Hartford (BDL): On-Time Performance
Data through May 2026
The calendar drives reliability on DEN–BDL. April 2026 flights landed on schedule 90% of the time, but May 2025 dropped to 54% — a gap of 36 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 66%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 2.6
- last 12 months
- Duration
- 3h 45m
- scheduled
- Distance
- 1,671 mi
Best airline from DEN to BDL
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 79% | 14 min | 0.6% | 1,450 |
| Southwest Airlines | 60% | 25 min | 1.4% | 561 |
Monthly on-time trend
Best time to fly from DEN to BDL
Aim for departures around 9 a.m. (86% on-time); avoid 7 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 19 min |
| Tuesdaybest | 77% | 18 min |
| Wednesday | 76% | 14 min |
| Thursday | 71% | 19 min |
| Friday | 71% | 18 min |
| Saturday | 77% | 14 min |
| Sunday | 74% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft51%
- Airline operations33%
- National airspace system15%
- Weather1%
Frequently asked questions
- How often are flights from DEN to BDL delayed?
- 26% of DEN–BDL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from DEN to BDL?
- United Airlines has the best on-time record on this route at 79%, based on 1,450 flights. 2 airlines flew DEN–BDL frequently enough to compare in this period.
- What is the best time of day to fly from DEN to BDL?
- Departures around 9 a.m. have the best record (86% on-time), while departures around 7 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to BDL?
- The scheduled DEN–BDL flight time averages 3h 45m over 1,671 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are DEN to BDL flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to BDL?
- May 2025 was the roughest month in this dataset, with only 54% of arrivals on time. The best was April 2026 at 90%. If your dates are flexible, that 36-point gap is worth planning around.
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Based on 2,011 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.