DEN to BDL flight delays
Denver, CO (DEN) Hartford, CT (BDL) · 1,671 miles
922 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
74.89%
Arrived on time
Within 15 minutes of schedule
1.41%
Cancelled
Share of scheduled flights
58 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. United Airlines arrived on time 27.6 points more often than Southwest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In April it ran 30.2 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The route has been getting better. The later months in the record run 14.1 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
The two directions do not behave alike. BDL to DEN arrives on time 9.2 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Which airline should you fly on this route?
Over January 2025 – August 2026, United Airlines arrived on time most often on DEN to BDL. Southwest Airlines was late most often. Flights ran closest to schedule in April and worst in July.
Every airline on DEN to BDL
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| United Airlines | 728 | 80.58% | 0.82% | 60 min | C |
| Southwest Airlines | 194 | 52.94% | 3.61% | 55 min | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
BDL to DEN Hartford back to Denver 84.13% on time BOther routes from Denver
Common questions
Are flights from Denver to Hartford usually delayed?
74.89% of flights on the DEN to BDL route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Denver to Hartford?
United Airlines, at 80.58% on time across 728 flights. The least punctual on the route was Southwest Airlines at 52.94%.
How often are DEN to BDL flights cancelled?
1.41% of scheduled flights did not operate — about 14 in every thousand. That is in the normal range.
What is the best month to fly Denver to Hartford?
April, when 90% of flights arrived on time. The worst was July at 59.8%.
When DEN to BDL flights are late, how late are they?
About 58 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DEN to BDL during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →