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

ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.

IAH → AUS

Houston to Austin: 2,674 nonstop flights a year

On time (12 months)

79%

Cancelled

1.0%

avg delay 16 min

Best time to leave

Before 9 AM

90% on time vs 66% 3 to 6 PM

Most reliable airline

SkyWest

81% chance on time

Check IAH to AUS fares

Lowest nonstop fare seen in the next two months: $69 (United 1711 on 2026-11-17). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

8 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 04m

    7:35 AM → 8:39 AM

    88%

    arrive on time

    7:35 AM IAH → 8:39 AM AUS1h 04m

    United 2070 · also flew as 2017, 1701

    Airbus A320 · 10–29 yrs old
    89% on time · 1.1% cancel
    Find United 2070 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 06m

    10:13 AM → 11:19 AM

    86%

    arrive on time

    10:13 AM IAH → 11:19 AM AUS1h 06m

    United 1823 · also flew as 2393

    Airbus A319 or A320 · 12–30 yrs old
    87% on time · 0.7% cancel
    Find United 1823 fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 09m

    11:55 AM → 1:04 PM

    81%

    arrive on time

    11:55 AM IAH → 1:04 PM AUS1h 09m

    United 1859

    Boeing 737-900ER · 2–18 yrs old
    82% on time · 1.4% cancel
    Find United 1859 fares Opens this date on Aviasales

  4. #4 · Nonstop · 1h 00m

    10:15 PM → 11:15 PM

    79%

    arrive on time

    10:15 PM IAH → 11:15 PM AUS1h 00m

    United 1179

    Boeing 737-800 · 9–28 yrs old
    80% on time · 1.9% cancel
    Find United 1179 fares Opens this date on Aviasales

  5. #5 · Nonstop · 1h 04m

    2:20 PM → 3:24 PM

    78%

    arrive on time

    2:20 PM IAH → 3:24 PM AUS1h 04m

    United 2483

    Airbus A319 or A320 · 19–28 yrs old
    78% on time · 1.0% cancel
    Find United 2483 fares Opens this date on Aviasales

  6. #6 · Nonstop · 1h 07m

    6:50 PM → 7:57 PM

    74%

    arrive on time

    6:50 PM IAH → 7:57 PM AUS1h 07m

    United 2674 · also flew as 1980

    Airbus A320 or Boeing 737 MAX 8 · 2–30 yrs old
    75% on time · 1.4% cancel
    Find United 2674 fares Opens this date on Aviasales

  7. #7 · Nonstop · 1h 09m

    8:25 PM → 9:34 PM

    71%

    arrive on time

    8:25 PM IAH → 9:34 PM AUS1h 09m

    United 2621

    Boeing 737-800 or 737 MAX 8 · 2–28 yrs old
    72% on time · 0.5% cancel
    Find United 2621 fares Opens this date on Aviasales

  8. #8 · Nonstop · 1h 06m

    4:20 PM → 5:26 PM

    67%

    arrive on time

    4:20 PM IAH → 5:26 PM AUS1h 06m

    United 1711

    Airbus A319 · 20–29 yrs old
    67% on time · 1.0% cancel
    Find United 1711 fares Opens this date on Aviasales

Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.

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)81%

    95 flights · 79% on time as flown · 0.6% cancel

  • United Airlines77%

    2,579 flights · 79% on time as flown · 1.0% cancel

On time by departure time

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

  • Before 9 AM90%

    352 flights · avg delay 6 min

  • 9 AM to noon85%

    365 flights · avg delay 11 min

  • Noon to 3 PM80%

    583 flights · avg delay 16 min

  • 3 to 6 PM66%

    343 flights · avg delay 22 min

  • 6 to 9 PM73%

    720 flights · avg delay 21 min

  • After 9 PM81%

    311 flights · avg delay 14 min

Best day: Tuesday (81%). Worst: Sunday (70%).

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