DEN to BWI flight delays & on-time performance
Nonstop flights from Denver International Airport to Baltimore/Washington International Thurgood Marshall Airport · 1,491 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or BWI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Denver (DEN) to Baltimore (BWI) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (82% on time); Southwest Airlines was the least (76%).
- Departures scheduled around 5am did best (98% on time); around 7pm did worst (30%).
- Wednesday was the most reliable day to fly (81% on time) and Thursday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (50%).
Which airline is most on time from DEN to BWI?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 82% | 0.7% | 11 min | 5.0% | 870 |
| Frontier Airlines | 79% | 0.0% | 16 min | 11.6% | 43 |
| Southwest Airlines | 76% | 1.2% | 13 min | 6.3% | 1,902 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am98%252 flights
- 6am98%66 flights
- 7am89%191 flights
- 8am84%81 flights
- 9am88%374 flights
- 10am79%160 flights
- 11am85%63 flights
- 12pm72%98 flights
- 1pm68%74 flights
- 2pm76%272 flights
- 3pm52%54 flights
- 4pm73%102 flights
- 5pm68%427 flights
- 6pm55%109 flights
- 7pm30%125 flights
- 11pm84%345 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.7% cancelled
- Tuesday80%0.3% cancelled
- Wednesday81%0.8% cancelled
- Thursday74%0.2% cancelled
- Friday79%1.1% cancelled
- Saturday77%1.1% cancelled
- Sunday75%3.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion16%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather79%
- Airline (crew, maintenance, cleaning, fueling)14%
- Air traffic control & airport congestion7%
- Security0%
DEN to BWI: common questions
- How often are DEN to BWI flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Denver to Baltimore cancelled?
- 1.0% of scheduled flights were cancelled (29 of 2,815).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 51 min behind schedule on average, and 6.0% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BWI to DEN — 77% on time
More flights from Denver
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DEN → BWI, nonstop flights by US airlines that report to the DOT. How we calculate this.