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Route on-time record

DFW to IAD: most on-time flights and the best time to fly

Dallas-Fort Worth (Dallas Fort Worth International Airport) to Dulles (Washington Dulles International Airport). 1,919 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 2.2% were cancelled. The most reliable flight number was United 2639 at 7:25 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

DFW → IAD

Dallas-Fort Worth to Dulles: 1,919 nonstop flights a year

On time (12 months)

78%

Cancelled

2.2%

avg delay 18 min

Best time to leave

Before 9 AM

89% on time vs 63% 6 to 9 PM

Most reliable airline

Frontier

85% chance on time

Check DFW to IAD fares

Lowest nonstop fare seen in the next two months: $73 (Frontier 3208 on 2026-11-11). 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. #1 · United 2639

    7:25 AM → 11:28 AM3h 03m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    88%

    chance on time

    On time (history)
    89%
    Cancelled
    1.7%
    Avg arrival delay
    12 min
    • Arrived on time 89% of the time (298 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 63%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).

    Strong track record · 298 flights

    Find United 2639 fares Opens this date on Aviasales

  2. #2 · Frontier 3208

    8:45 AM → 12:41 PM2h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    1.9%
    Avg arrival delay
    7 min
    • Arrived on time 90% of the time (152 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 63%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).

    Moderate track record · 152 flights

    Find Frontier 3208 fares Opens this date on Aviasales

  3. #3 · United 358

    12:16 PM → 4:11 PM2h 59m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    0.3%
    Avg arrival delay
    16 min
    • Arrived on time 86% of the time (289 flights, Jun 2025 to May 2026).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
    • 53% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 289 flights

    Find United 358 fares Opens this date on Aviasales

  4. #4 · American 1906

    7:05 AM → 11:09 AM3h 04m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 63%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
    • 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

  5. #5 · United 1240

    5:22 PM → 9:25 PM3h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    81%
    Cancelled
    1.2%
    Avg arrival delay
    17 min
    • Arrived on time 81% of the time (324 flights, Jun 2025 to May 2026).
    • Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.

    Strong track record · 324 flights

    Find United 1240 fares Opens this date on Aviasales

  6. #6 · American 2856

    7:29 PM → 11:26 PM2h 57m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    73%

    chance on time

    On time (history)
    83%
    Cancelled
    4.5%
    Avg arrival delay
    17 min
    • Arrived on time 83% of the time (42 flights, Jun 2025 to May 2026).
    • Cancelled 4.5% of the time (2 of 44).
    • Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 89%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).

    Limited track record · 42 flights

    Find American 2856 fares Opens this date on Aviasales

  7. #7 · American 2414

    12:56 PM → 4:50 PM2h 54m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    68%

    chance on time

    On time (history)
    71%
    Cancelled
    3.2%
    Avg arrival delay
    24 min
    • Arrived on time 71% of the time (151 flights, Jun 2025 to May 2026).
    • Cancelled 3.2% of the time (5 of 156).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 151 flights

    Find American 2414 fares Opens this date on Aviasales

  8. #8 · American 1904

    2:33 PM → 6:34 PM3h 01m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    66%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
    • Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 1904 fares Opens this date on Aviasales

  9. #9 · American 1291

    7:02 PM → 10:53 PM2h 51m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    63%

    chance on time

    On time (history)
    66%
    Cancelled
    4.0%
    Avg arrival delay
    23 min
    • Arrived on time 66% of the time (169 flights, Jun 2025 to May 2026).
    • Cancelled 4.0% of the time (7 of 176).
    • Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 89%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).

    Moderate track record · 169 flights

    Find American 1291 fares Opens this date on Aviasales

  10. #10 · American 2131

    1:10 PM → 5:09 PM2h 59m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    62%

    chance on time

    On time (history)
    72%
    Cancelled
    2.3%
    Avg arrival delay
    21 min
    • Arrived on time 72% of the time (43 flights, Jun 2025 to May 2026).
    • Departs inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (43 flights), so its score leans on the airline's record at this hour.

    Limited track record · 43 flights

    Find American 2131 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines85%

    155 flights · 90% on time as flown · 2.1% cancel

  • United Airlines83%

    924 flights · 85% on time as flown · 1.2% cancel

  • American Airlines68%

    831 flights · 69% on time as flown · 3.3% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM89%

    561 flights · avg delay 10 min

  • Noon to 3 PM75%

    637 flights · avg delay 21 min

  • 3 to 6 PM79%

    389 flights · avg delay 19 min

  • 6 to 9 PM63%

    301 flights · avg delay 29 min

Best day: Tuesday (82%). Worst: Sunday (74%).

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.

J
79
F
82
M
75
A
77
M
70
J
67
J
70
A
79
S
82
O
85
N
81
D
79

What delays this route

  • Late-arriving aircraft48%
  • Airline (crew, maintenance, boarding)32%
  • Air traffic control and airport volume14%
  • Severe weather6%

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

DFW to IAD questions

What time of day is best to fly DFW to IAD?
Before 9 AM: 89% of flights arrived on time, against 63% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from DFW to IAD?
Frontier, with a season-adjusted 85% 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 DFW to IAD?
June (67% on time); the best was October (85%), 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 DFW

Live status: FAA delays and ground stops