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Route on-time record

ASE to IAH: most on-time flights and the best time to fly

Aspen (Aspen-Pitkin County Airport (Sardy Field)) to Houston (George Bush Intercontinental Airport). 600 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 5.8% were cancelled. The most reliable flight number was SkyWest 5493 at 11:30 AM.

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

ASE → IAH

Aspen to Houston: 600 nonstop flights a year

On time (12 months)

72%

Cancelled

5.8%

avg delay 34 min

Best time to leave

9 AM to noon

82% on time vs 57% 3 to 6 PM

Most reliable airline

SkyWest

67% chance on time

Check ASE to IAH fares

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 · SkyWest 5493 · sold as United Express, Delta Connection, American Eagle or Alaska

    11:30 AM → 3:24 PM2h 54m nonstop

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

    75%

    chance on time

    On time (history)
    82%
    Cancelled
    4.3%
    Avg arrival delay
    20 min
    • Arrived on time 82% of the time (112 flights, Jun 2025 to May 2026).
    • Cancelled 4.3% of the time (5 of 117).
    • Leaves in this route's most on-time window (9 AM to noon: 82% on time; 3 to 6 PM: 57%).
    • Departs inside ASE's trouble window: 85% of its 46 ground stops and delay programs started between 6 AM and noon.

    Moderate track record · 112 flights

    Find 11:30 AM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 5300 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:20 AM → 11:11 AM2h 51m nonstop

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

    74%

    chance on time

    On time (history)
    81%
    Cancelled
    7.0%
    Avg arrival delay
    18 min
    • Arrived on time 81% of the time (160 flights, Jun 2025 to May 2026).
    • Cancelled 7.0% of the time (12 of 172).
    • Departs inside ASE's trouble window: 85% of its 46 ground stops and delay programs started between 6 AM and noon.

    Moderate track record · 160 flights

    Find 7:20 AM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 5632 · sold as United Express, Delta Connection, American Eagle or Alaska

    1:00 PM → 4:56 PM2h 56m nonstop

    Local times, typical schedule. Last flown 2026-04-11.

    67%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 78% of the time (9 flights, Jun 2025 to May 2026).
    • Departs outside ASE's trouble window (6 AM to noon, when 85% of its 46 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Short track record (9 flights), so its score leans on the airline's record at this hour.

    Limited track record · 9 flights

    Find 1:00 PM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 5949 · sold as United Express, Delta Connection, American Eagle or Alaska

    5:00 PM → 8:47 PM2h 47m nonstop

    Local times, typical schedule. Last flown 2026-03-31.

    64%

    chance on time

    On time (history)
    68%
    Cancelled
    8.3%
    Avg arrival delay
    38 min
    • Arrived on time 68% of the time (22 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 57% on time; 9 AM to noon: 82%).
    • Departs outside ASE's trouble window (6 AM to noon, when 85% of its 46 ground stops and delay programs started).
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find 5:00 PM flight fares Opens this date on Aviasales

  5. #5 · SkyWest 5702 · sold as United Express, Delta Connection, American Eagle or Alaska

    1:23 PM → 5:11 PM2h 48m nonstop

    Local times, typical schedule. Last flown 2026-04-05.

    60%

    chance on time

    On time (history)
    63%
    Cancelled
    6.7%
    Avg arrival delay
    57 min
    • Arrived on time 63% of the time (139 flights, Jun 2025 to May 2026).
    • Cancelled 6.7% of the time (10 of 149).
    • Departs outside ASE's trouble window (6 AM to noon, when 85% of its 46 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 139 flights

    Find 1:23 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)67%

    600 flights · 72% on time as flown · 5.8% cancel

On time by departure time

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

  • Before 9 AM81%

    172 flights · avg delay 18 min

  • 9 AM to noon82%

    118 flights · avg delay 20 min

  • Noon to 3 PM66%

    207 flights · avg delay 40 min

  • 3 to 6 PM57%

    103 flights · avg delay 66 min

Best day: Thursday (74%). Worst: Saturday (62%).

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
67
F
66
M
70
A
46
M
83
J
62
J
66
A
66
S
77
O
81
N
-
D
60

What delays this route

  • Late-arriving aircraft33%
  • Air traffic control and airport volume28%
  • Airline (crew, maintenance, boarding)24%
  • Severe weather15%

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

ASE to IAH questions

What time of day is best to fly ASE to IAH?
9 AM to noon: 82% of flights arrived on time, against 57% for departures 3 to 6 PM.
Which airline is most on time from ASE to IAH?
SkyWest, with a season-adjusted 67% chance of operating and arriving on time over 600 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 ASE to IAH?
April (46% on time); the best was May (83%), 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 ASE

Live status: FAA delays and ground stops