Skip to content

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

Route on-time record

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

Dulles (Washington Dulles International Airport) to Orlando (Orlando International Airport). 2,204 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was United 1926 at 9:50 AM.

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

IAD → MCO

Dulles to Orlando: 2,204 nonstop flights a year

On time (12 months)

81%

Cancelled

0.8%

avg delay 16 min

Best time to leave

9 AM to noon

90% on time vs 72% 3 to 6 PM

Most reliable airline

United

82% chance on time

Check IAD to MCO fares

Lowest nonstop fare seen in the next two months: $101 (Frontier 2859 on 2026-11-20). 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 1926

    9:50 AM → 12:21 PM2h 31m nonstop

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

    90%

    chance on time

    On time (history)
    91%
    Cancelled
    0.3%
    Avg arrival delay
    7 min
    • Arrived on time 91% of the time (298 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 90% on time; 3 to 6 PM: 72%).
    • 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 · 298 flights

    Find United 1926 fares Opens this date on Aviasales

  2. #2 · United 379

    8:30 AM → 11:00 AM2h 30m nonstop

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

    88%

    chance on time

    On time (history)
    89%
    Cancelled
    1.2%
    Avg arrival delay
    7 min
    • Arrived on time 89% of the time (322 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).

    Strong track record · 322 flights

    Find United 379 fares Opens this date on Aviasales

  3. #3 · United 2206

    12:47 PM → 3:14 PM2h 27m nonstop

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

    84%

    chance on time

    On time (history)
    85%
    Cancelled
    0.3%
    Avg arrival delay
    12 min
    • Arrived on time 85% of the time (336 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 MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.

    Strong track record · 336 flights

    Find United 2206 fares Opens this date on Aviasales

  4. #4 · United 1277

    4:10 PM → 6:42 PM2h 32m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1786; its record covers all of them.

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 87% of the time (77 flights, Jun 2025 to May 2026).
    • Never cancelled in 77 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 72% on time; 9 AM to noon: 90%).
    • Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 77 flights

    Find United 1277 fares Opens this date on Aviasales

  5. #5 · United 689

    10:22 PM → 12:45 AM2h 26m nonstop

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

    81%

    chance on time

    On time (history)
    81%
    Cancelled
    0.6%
    Avg arrival delay
    12 min
    • Arrived on time 81% of the time (348 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).

    Strong track record · 348 flights

    Find United 689 fares Opens this date on Aviasales

  6. #6 · Frontier 4229

    8:12 AM → 10:46 AM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-04. Same departure also flew as Frontier 2859; its record covers all of them.

    76%

    chance on time

    On time (history)
    79%
    Cancelled
    3.4%
    Avg arrival delay
    9 min
    • Arrived on time 79% of the time (114 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (4 of 118).
    • 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 · 114 flights

    Find Frontier 4229 fares Opens this date on Aviasales

  7. #7 · United 1101

    3:37 PM → 5:59 PM2h 22m nonstop

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

    75%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 72% on time; 9 AM to noon: 90%).
    • 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 · 32 flights

    Find United 1101 fares Opens this date on Aviasales

  8. #8 · Frontier 4355

    7:27 PM → 10:09 PM2h 42m nonstop

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

    73%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 81% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find Frontier 4355 fares Opens this date on Aviasales

  9. #9 · United 2463

    5:50 PM → 8:22 PM2h 32m nonstop

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

    70%

    chance on time

    On time (history)
    70%
    Cancelled
    0.5%
    Avg arrival delay
    25 min
    • Arrived on time 70% of the time (362 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 72% on time; 9 AM to noon: 90%).
    • 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 · 362 flights

    Find United 2463 fares Opens this date on Aviasales

  10. #10 · Frontier 4811

    8:30 PM → 11:07 PM2h 37m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    63%

    chance on time

    On time (history)
    61%
    Cancelled
    2.5%
    Avg arrival delay
    55 min
    • Arrived on time 61% of the time (119 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 · 119 flights

    Find Frontier 4811 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines82%

    1,932 flights · 82% on time as flown · 0.6% cancel

  • Frontier Airlines71%

    272 flights · 71% on time as flown · 1.9% cancel

On time by departure time

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

  • Before 9 AM87%

    366 flights · avg delay 8 min

  • 9 AM to noon90%

    383 flights · avg delay 8 min

  • Noon to 3 PM81%

    432 flights · avg delay 17 min

  • 3 to 6 PM72%

    495 flights · avg delay 24 min

  • 6 to 9 PM76%

    138 flights · avg delay 17 min

  • After 9 PM79%

    390 flights · avg delay 18 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
77
F
83
M
78
A
84
M
76
J
71
J
64
A
70
S
86
O
87
N
84
D
78

What delays this route

  • Air traffic control and airport volume36%
  • Late-arriving aircraft33%
  • Airline (crew, maintenance, boarding)26%
  • 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 MCO questions

What time of day is best to fly IAD to MCO?
9 AM to noon: 90% of flights arrived on time, against 72% for departures 3 to 6 PM.
Which airline is most on time from IAD to MCO?
United, with a season-adjusted 82% chance of operating and arriving on time over 1,932 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 MCO?
July (64% 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

Live status: FAA delays and ground stops