Route on-time record
DEN to BHM: most on-time flights and the best time to fly
Denver (Denver International Airport) to Birmingham (Birmingham-Shuttlesworth International Airport). 1,166 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was United 1697 at 11:05 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → BHM
Denver to Birmingham: 1,166 nonstop flights a year
On time (12 months)
74%
Cancelled
0.5%
avg delay 17 min
Best time to leave
9 AM to noon
81% on time vs 51% 6 to 9 PM
Most reliable airline
SkyWest
79% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1697
11:05 AM → 2:56 PM2h 51m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 95% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; 6 to 9 PM: 51%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find United 1697 fares Opens this date on Aviasales#2 · SkyWest 4659 · sold as United Express, Delta Connection, American Eagle or Alaska
5:50 PM → 9:55 PM3h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 5:50 PM flight fares Opens this date on Aviasales#3 · SkyWest 5985 · sold as United Express, Delta Connection, American Eagle or Alaska
10:55 AM → 2:56 PM3h 01m nonstop
Local times, typical schedule. Last flown 2026-04-29.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.3%
- Avg arrival delay
- 10 min
- Arrived on time 82% of the time (330 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; 6 to 9 PM: 51%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 330 flights
Find 10:55 AM flight fares Opens this date on Aviasales#4 · SkyWest 5815 · sold as United Express, Delta Connection, American Eagle or Alaska
5:38 PM → 9:44 PM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.3%
- Avg arrival delay
- 18 min
- Arrived on time 78% of the time (352 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 352 flights
Find 5:38 PM flight fares Opens this date on Aviasales#5 · Southwest 3255
10:55 AM → 2:25 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; 6 to 9 PM: 51%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3255 fares Opens this date on Aviasales#6 · Southwest 3073
10:25 AM → 2:00 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 693; its record covers all of them.
73%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.4%
- Avg arrival delay
- 11 min
- Arrived on time 76% of the time (71 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; 6 to 9 PM: 51%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 71 flights
Find Southwest 3073 fares Opens this date on Aviasales#7 · United 1357
10:15 AM → 2:03 PM2h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 36%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 36% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 81% on time; 6 to 9 PM: 51%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 11 flights
Find United 1357 fares Opens this date on Aviasales#8 · Southwest 2537
1:05 PM → 4:35 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30.
66%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 2537 fares Opens this date on Aviasales#9 · Southwest 1787
7:00 PM → 10:30 PM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
51%
chance on time
- On time (history)
- 48%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 48% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 51% on time; 9 AM to noon: 81%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 46 flights
Find Southwest 1787 fares Opens this date on Aviasales#10 · Southwest 1017
8:05 PM → 11:30 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
47%
chance on time
- On time (history)
- 39%
- Cancelled
- 0.0%
- Avg arrival delay
- 44 min
- Arrived on time 39% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 51% on time; 9 AM to noon: 81%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 69% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 28 flights
Find Southwest 1017 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)79%
697 flights · 80% on time as flown · 0.3% cancel
- United Airlines74%
31 flights · 74% on time as flown · 0.4% cancel
- Southwest Airlines64%
438 flights · 64% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon81%
455 flights · avg delay 10 min
- 3 to 6 PM76%
480 flights · avg delay 17 min
- 6 to 9 PM51%
174 flights · avg delay 29 min
Best day: Tuesday (75%). Worst: Saturday (68%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft40%
- Airline (crew, maintenance, boarding)40%
- Air traffic control and airport volume15%
- Severe weather4%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
DEN to BHM questions
- What time of day is best to fly DEN to BHM?
- 9 AM to noon: 81% of flights arrived on time, against 51% for departures 6 to 9 PM.
- Which airline is most on time from DEN to BHM?
- SkyWest, with a season-adjusted 79% chance of operating and arriving on time over 697 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on DEN to BHM?
- June (55% on time); the best was October (78%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from DEN
- BHM to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops