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Route on-time record

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

Dallas-Fort Worth (Dallas Fort Worth International Airport) to Ontario (Ontario International Airport). 2,315 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 2.9% were cancelled. The most reliable flight number was American 2461 at 8:51 AM.

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

DFW → ONT

Dallas-Fort Worth to Ontario: 2,315 nonstop flights a year

On time (12 months)

68%

Cancelled

2.9%

avg delay 22 min

Best time to leave

Before 9 AM

85% on time vs 53% after 9 PM

Most reliable airline

Frontier

77% chance on time

Check DFW to ONT fares

Lowest nonstop fare seen in the next two months: $200 (Frontier 4689 on 2026-10-27). 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 · American 2461

    8:51 AM → 10:09 AM3h 18m nonstop

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

    80%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 84% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; After 9 PM: 53%).
    • 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 · 44 flights

    Find American 2461 fares Opens this date on Aviasales

  2. #2 · American 2635

    12:26 PM → 1:48 PM3h 22m nonstop

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

    78%

    chance on time

    On time (history)
    81%
    Cancelled
    2.3%
    Avg arrival delay
    14 min
    • Arrived on time 81% of the time (302 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).

    Strong track record · 302 flights

    Find American 2635 fares Opens this date on Aviasales

  3. #3 · American 2238

    8:20 AM → 9:31 AM3h 11m nonstop

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

    77%

    chance on time

    On time (history)
    80%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; After 9 PM: 53%).
    • Departs outside DFW's trouble window (1 PM to 7 PM, when 53% of its 139 ground stops and delay programs started).
    • 66% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 10 flights

    Find American 2238 fares Opens this date on Aviasales

  4. #4 · American 2462

    12:05 PM → 1:18 PM3h 13m nonstop

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

    76%

    chance on time

    On time (history)
    79%
    Cancelled
    2.3%
    Avg arrival delay
    17 min
    • Arrived on time 79% of the time (43 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).
    • 54% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (43 flights), so its score leans on the airline's record at this hour.

    Limited track record · 43 flights

    Find American 2462 fares Opens this date on Aviasales

  5. #5 · Frontier 4689

    5:46 PM → 7:11 PM3h 25m nonstop

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

    75%

    chance on time

    On time (history)
    80%
    Cancelled
    0.7%
    Avg arrival delay
    13 min
    • Arrived on time 80% of the time (147 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.
    • 72% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 147 flights

    Find Frontier 4689 fares Opens this date on Aviasales

  6. #6 · American 1820

    8:40 AM → 10:06 AM3h 26m nonstop

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

    75%

    chance on time

    On time (history)
    77%
    Cancelled
    2.3%
    Avg arrival delay
    18 min
    • Arrived on time 77% of the time (299 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; After 9 PM: 53%).
    • 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 · 299 flights

    Find American 1820 fares Opens this date on Aviasales

  7. #7 · American 2239

    12:20 PM → 1:28 PM3h 08m nonstop

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

    72%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 64% of the time (11 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).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 2239 fares Opens this date on Aviasales

  8. #8 · American 2242

    10:40 AM → 11:50 AM3h 10m nonstop

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

    68%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    20 min
    • Arrived on time 64% of the time (11 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).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 2242 fares Opens this date on Aviasales

  9. #9 · American 2236

    6:50 PM → 7:56 PM3h 06m nonstop

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

    58%

    chance on time

    On time (history)
    56%
    Cancelled
    18.2%
    Avg arrival delay
    19 min
    • Arrived on time 56% of the time (9 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.
    • Short track record (9 flights), so its score leans on the airline's record at this hour.

    Limited track record · 9 flights

    Find American 2236 fares Opens this date on Aviasales

  10. #10 · American 3006

    5:21 PM → 6:42 PM3h 15m nonstop

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

    57%

    chance on time

    On time (history)
    58%
    Cancelled
    1.8%
    Avg arrival delay
    35 min
    • Arrived on time 58% of the time (330 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.
    • 60% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 330 flights

    Find American 3006 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines77%

    315 flights · 82% on time as flown · 3.1% cancel

  • American Airlines65%

    2,000 flights · 66% on time as flown · 2.8% cancel

On time by departure time

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

  • Before 9 AM85%

    340 flights · avg delay 11 min

  • 9 AM to noon70%

    341 flights · avg delay 20 min

  • Noon to 3 PM81%

    445 flights · avg delay 13 min

  • 3 to 6 PM64%

    442 flights · avg delay 31 min

  • 6 to 9 PM60%

    156 flights · avg delay 26 min

  • After 9 PM53%

    591 flights · avg delay 29 min

Best day: Tuesday (72%). Worst: Sunday (65%).

Smarter routing

Nearby airports that run more on time

  • DFW → SNA 75% chance on time

    Dallas Fort Worth International Airport to John Wayne Orange County International Airport · 2,905 flights a year · 30 mi from your airports · yours: 66%

    Rank flightsFares

  • DAL → LGB 73% chance on time

    Dallas Love Field to Long Beach International Airport · 562 flights a year · 48 mi from your airports · yours: 66%

    Rank flightsFares

  • DFW → LAX 70% chance on time

    Dallas Fort Worth International Airport to Los Angeles International Airport · 6,270 flights a year · 47 mi from your airports · yours: 66%

    Rank flightsFares

  • DAL → SNA 70% chance on time

    Dallas Love Field to John Wayne Orange County International Airport · 364 flights a year · 42 mi from your airports · yours: 66%

    Rank flightsFares

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
75
F
85
M
76
A
71
M
59
J
58
J
56
A
62
S
71
O
77
N
73
D
79

What delays this route

  • Late-arriving aircraft53%
  • Airline (crew, maintenance, boarding)32%
  • Air traffic control and airport volume9%
  • 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 ONT questions

What time of day is best to fly DFW to ONT?
Before 9 AM: 85% of flights arrived on time, against 53% for departures after 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 ONT?
Frontier, with a season-adjusted 77% chance of operating and arriving on time over 315 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 ONT?
July (56% on time); the best was February (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