Route on-time record
IAD to DFW: most on-time flights and the best time to fly
Dulles (Washington Dulles International Airport) to Dallas-Fort Worth (Dallas Fort Worth International Airport). 1,920 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was United 2471 at 8:35 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAD → DFW
Dulles to Dallas-Fort Worth: 1,920 nonstop flights a year
On time (12 months)
77%
Cancelled
2.1%
avg delay 23 min
Best time to leave
Noon to 3 PM
87% on time vs 54% 6 to 9 PM
Most reliable airline
Frontier
80% chance on time
Lowest nonstop fare seen in the next two months: $91 (Frontier 4559 on 2026-11-19). 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 2471
8:35 AM → 11:11 AM3h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.7%
- Avg arrival delay
- 7 min
- Arrived on time 91% of the time (133 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Moderate track record · 133 flights
Find United 2471 fares Opens this date on Aviasales#2 · United 1564
12:42 PM → 3:16 PM3h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 83% of the time (108 flights, Jun 2025 to May 2026).
- Never cancelled in 109 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 87% on time; 6 to 9 PM: 54%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Moderate track record · 108 flights
Find United 1564 fares Opens this date on Aviasales#3 · Frontier 3207
8:30 PM → 11:08 PM3h 43m nonstop
Local times, typical schedule. Last flown 2026-04-12.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 3.3%
- Avg arrival delay
- 17 min
- Arrived on time 85% of the time (117 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (4 of 122).
- Leaves in this route's least on-time window (6 to 9 PM: 54% on time; Noon to 3 PM: 87%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Moderate track record · 117 flights
Find Frontier 3207 fares Opens this date on Aviasales#4 · American 2617
7:00 AM → 9:31 AM3h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 84%
- Cancelled
- 3.9%
- Avg arrival delay
- 17 min
- Arrived on time 84% of the time (321 flights, Jun 2025 to May 2026).
- Cancelled 3.9% of the time (13 of 335).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Strong track record · 321 flights
Find American 2617 fares Opens this date on Aviasales#5 · Frontier 4559
1:26 PM → 4:06 PM3h 40m nonstop
Local times, typical schedule. Last flown 2026-05-30.
79%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 78 min
- Arrived on time 79% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 87% on time; 6 to 9 PM: 54%).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 33 flights
Find Frontier 4559 fares Opens this date on Aviasales#6 · American 1906
11:59 AM → 2:16 PM3h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 70%
- Cancelled
- 9.1%
- Avg arrival delay
- 146 min
- Arrived on time 70% of the time (10 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find American 1906 fares Opens this date on Aviasales#7 · United 2116
5:50 PM → 8:28 PM3h 38m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
- On time (history)
- 66%
- Cancelled
- 0.9%
- Avg arrival delay
- 30 min
- Arrived on time 66% of the time (343 flights, Jun 2025 to May 2026).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 343 flights
Find United 2116 fares Opens this date on Aviasales#8 · American 2414
5:52 PM → 8:38 PM3h 46m nonstop
Local times, typical schedule. Last flown 2026-04-06.
65%
chance on time
- On time (history)
- 70%
- Cancelled
- 4.0%
- Avg arrival delay
- 28 min
- Arrived on time 70% of the time (144 flights, Jun 2025 to May 2026).
- Cancelled 4.0% of the time (6 of 151).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 144 flights
Find American 2414 fares Opens this date on Aviasales#9 · American 1904
7:24 PM → 9:47 PM3h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
63%
chance on time
- On time (history)
- 45%
- Cancelled
- 0.0%
- Avg arrival delay
- 51 min
- Arrived on time 45% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 54% on time; Noon to 3 PM: 87%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 11 flights
Find American 1904 fares Opens this date on Aviasales#10 · American 2131
5:59 PM → 8:30 PM3h 31m nonstop
Local times, typical schedule. Last flown 2026-05-20.
53%
chance on time
- On time (history)
- 44%
- Cancelled
- 6.8%
- Avg arrival delay
- 32 min
- Arrived on time 44% of the time (41 flights, Jun 2025 to May 2026).
- Cancelled 6.8% of the time (3 of 44).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (41 flights), so its score leans on the airline's record at this hour.
Limited track record · 41 flights
Find American 2131 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines80%
155 flights · 83% on time as flown · 2.4% cancel
- United Airlines79%
923 flights · 80% on time as flown · 1.0% cancel
- American Airlines72%
833 flights · 74% on time as flown · 3.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
599 flights · avg delay 14 min
- 9 AM to noon83%
220 flights · avg delay 28 min
- Noon to 3 PM87%
378 flights · avg delay 18 min
- 3 to 6 PM66%
575 flights · avg delay 27 min
- 6 to 9 PM54%
142 flights · avg delay 48 min
Best day: Thursday (80%). Worst: Saturday (73%).
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)38%
- Air traffic control and airport volume18%
- 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
IAD to DFW questions
- What time of day is best to fly IAD to DFW?
- Noon to 3 PM: 87% of flights arrived on time, against 54% for departures 6 to 9 PM.
- Which airline is most on time from IAD to DFW?
- Frontier, with a season-adjusted 80% chance of operating and arriving on time over 155 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 IAD to DFW?
- May (66% on time); the best was October (87%), 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 IAD
- DFW to IAD (return)
- IAD to ATL 78%
- IAD to DEN 81%
- IAD to SFO 79%
- IAD to LAX 80%
- IAD to MCO 81%
- IAD to CLT 83%
- IAD to ORD 75%
- IAD to SEA 76%
- IAD to IAH 83%
- IAD to BOS 75%
- IAD to EWR 73%
- IAD to TPA 79%
Live status: FAA delays and ground stops