Denver (DEN) to Baltimore (BWI): On-Time Performance
Data through July 2026
When you fly DEN to BWI matters as much as anything else about the booking: the route swung from 87% on-time in January 2026 to just 60% in July 2025. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 67%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 7.7
- last 12 months
- Duration
- 3h 24m
- scheduled
- Distance
- 1,491 mi
Best airline from DEN to BWI
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 80% | 12 min | 0.7% | 1,925 |
| Southwest Airlines | 75% | 14 min | 1.1% | 4,118 |
| Frontier Airlines | 74% | 16 min | 0.6% | 177 |
Monthly on-time trend
Best time to fly from DEN to BWI
Aim for departures around 6 a.m. (96% on-time); avoid 7 p.m. departures (45%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 13 min |
| Tuesday | 79% | 13 min |
| Wednesdaybest | 79% | 12 min |
| Thursday | 76% | 13 min |
| Friday | 78% | 15 min |
| Saturday | 76% | 13 min |
| Sunday | 73% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations33%
- National airspace system20%
- Weather1%
Frequently asked questions
- How often are flights from DEN to BWI delayed?
- 24% of DEN–BWI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from DEN to BWI?
- United Airlines has the best on-time record on this route at 80%, based on 1,925 flights. 3 airlines flew DEN–BWI frequently enough to compare in this period.
- What is the best time of day to fly from DEN to BWI?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 7 p.m. have the worst (45%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to BWI?
- The scheduled DEN–BWI flight time averages 3h 24m over 1,491 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are DEN to BWI flights cancelled?
- 1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to BWI?
- July 2025 was the roughest month in this dataset, with only 60% of arrivals on time. The best was January 2026 at 87%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 6,220 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.