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Route on-time record

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

Tampa (Tampa International Airport) to Dulles (Washington Dulles International Airport). 1,414 nonstop flights in Jun 2025 to May 2026, 82% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was United 2331 at 9:00 AM.

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

TPA → IAD

Tampa to Dulles: 1,414 nonstop flights a year

On time (12 months)

82%

Cancelled

1.2%

avg delay 14 min

Best time to leave

9 AM to noon

92% on time vs 73% 6 to 9 PM

Most reliable airline

United

83% chance on time

Check TPA to IAD fares

Lowest nonstop fare seen in the next two months: $81 (Frontier 2954 on 2026-11-18). 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 2331

    9:00 AM → 11:25 AM2h 25m nonstop

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

    92%

    chance on time

    On time (history)
    93%
    Cancelled
    0.9%
    Avg arrival delay
    4 min
    • Arrived on time 93% of the time (323 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 92% on time; 6 to 9 PM: 73%).
    • Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).

    Strong track record · 323 flights

    Find United 2331 fares Opens this date on Aviasales

  2. #2 · United 2410

    11:41 AM → 2:00 PM2h 19m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    85%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    25 min
    • Arrived on time 88% of the time (24 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 92% on time; 6 to 9 PM: 73%).
    • Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 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.

    Limited track record · 24 flights

    Find United 2410 fares Opens this date on Aviasales

  3. #3 · United 1576

    1:30 PM → 3:55 PM2h 25m nonstop

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

    84%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 85% of the time (88 flights, Jun 2025 to May 2026).
    • Never cancelled in 88 scheduled flights.
    • Departs inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
    • 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 · 88 flights

    Find United 1576 fares Opens this date on Aviasales

  4. #4 · United 1370

    7:00 PM → 9:25 PM2h 25m nonstop

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

    73%

    chance on time

    On time (history)
    73%
    Cancelled
    0.6%
    Avg arrival delay
    21 min
    • Arrived on time 73% of the time (351 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 73% on time; 9 AM to noon: 92%).
    • Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).

    Strong track record · 351 flights

    Find United 1370 fares Opens this date on Aviasales

  5. #5 · Frontier 2954

    11:18 AM → 1:44 PM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    73%

    chance on time

    On time (history)
    75%
    Cancelled
    4.8%
    Avg arrival delay
    17 min
    • Arrived on time 75% of the time (178 flights, Jun 2025 to May 2026).
    • Cancelled 4.8% of the time (9 of 187).
    • Leaves in this route's most on-time window (9 AM to noon: 92% on time; 6 to 9 PM: 73%).
    • Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).

    Moderate track record · 178 flights

    Find Frontier 2954 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines83%

    1,223 flights · 83% on time as flown · 0.7% cancel

  • Frontier Airlines75%

    191 flights · 75% on time as flown · 3.2% cancel

On time by departure time

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

  • Before 9 AM90%

    126 flights · avg delay 11 min

  • 9 AM to noon92%

    393 flights · avg delay 7 min

  • Noon to 3 PM80%

    480 flights · avg delay 16 min

  • 3 to 6 PM73%

    51 flights · avg delay 13 min

  • 6 to 9 PM73%

    364 flights · avg delay 21 min

Best day: Tuesday (87%). Worst: Sunday (77%).

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
85
F
85
M
77
A
90
M
80
J
74
J
69
A
75
S
88
O
92
N
92
D
85

What delays this route

  • Air traffic control and airport volume32%
  • Late-arriving aircraft30%
  • Airline (crew, maintenance, boarding)26%
  • Severe weather12%

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

TPA to IAD questions

What time of day is best to fly TPA to IAD?
9 AM to noon: 92% of flights arrived on time, against 73% for departures 6 to 9 PM.
Which airline is most on time from TPA to IAD?
United, with a season-adjusted 83% chance of operating and arriving on time over 1,223 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 TPA to IAD?
July (69% on time); the best was October (92%), 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 TPA

Live status: FAA delays and ground stops