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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.

LAX → IAH

Los Angeles to Houston: 5,291 nonstop flights a year

On time (12 months)

84%

Cancelled

0.7%

avg delay 12 min

Best time to leave

Before 9 AM

93% on time vs 73% noon to 3 PM

Most reliable airline

United

86% chance on time

Check LAX to IAH fares

Lowest nonstop fare seen in the next two months: $98 (Frontier 1756 on 2026-11-09). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

20 nonstop, 23 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 3h 21m

    6:45 AM → 12:06 PM

    96%

    arrive on time

    6:45 AM LAX → 12:06 PM IAH3h 21m

    United 744

    Boeing 737-900ER or 737 MAX 9 · 1–17 yrs old
    96% on time · 0.2% cancel
    Find United 744 fares Opens this date on Aviasales

  2. #2 · Nonstop · 3h 22m

    5:50 AM → 11:12 AM

    94%

    arrive on time

    5:50 AM LAX → 11:12 AM IAH3h 22m

    United 654

    Boeing 737 MAX 9 · 0–30 yrs old
    95% on time · 0.1% cancel
    Find United 654 fares Opens this date on Aviasales

  3. #3 · Nonstop · 3h 29m

    7:05 AM → 12:34 PM

    94%

    arrive on time

    7:05 AM LAX → 12:34 PM IAH3h 29m

    United 1397

    Boeing 737 MAX 9 · 1–18 yrs old
    94% on time · 0.2% cancel
    Find United 1397 fares Opens this date on Aviasales

  4. #4 · Nonstop · 3h 20m

    8:15 AM → 1:37 PM

    92%

    arrive on time

    8:15 AM LAX → 1:37 PM IAH3h 20m

    United 1416

    Boeing 737-900ER · 3–18 yrs old
    92% on time · 0.1% cancel
    Find United 1416 fares Opens this date on Aviasales

  5. #5 · Nonstop · 3h 15m

    12:55 AM → 6:10 AM

    92%

    arrive on time

    12:55 AM LAX → 6:10 AM IAH3h 15m

    United 491

    Boeing 737 MAX 9 or 737-900ER · 0–14 yrs old
    92% on time · 1.0% cancel
    Find United 491 fares Opens this date on Aviasales

  6. #6 · Nonstop · 3h 18m

    7:20 AM → 12:38 PM

    91%

    arrive on time

    7:20 AM LAX → 12:38 PM IAH3h 18m

    United 1852

    Boeing 737-900ER · 10–18 yrs old
    91% on time · 0.3% cancel
    Find United 1852 fares Opens this date on Aviasales

  7. #7 · Nonstop · 3h 14m

    9:00 AM → 2:12 PM

    87%

    arrive on time

    9:00 AM LAX → 2:12 PM IAH3h 14m

    Delta 1143

    Airbus A319 · 23–26 yrs old
    88% on time · 0.9% cancel
    Find Delta 1143 fares Opens this date on Aviasales

  8. #8 · Nonstop · 3h 22m

    10:15 AM → 3:37 PM

    87%

    arrive on time

    10:15 AM LAX → 3:37 PM IAH3h 22m

    United 277

    Boeing 737-900ER or 737 MAX 9 · 1–17 yrs old
    87% on time · 0.2% cancel
    Find United 277 fares Opens this date on Aviasales

  9. #9 · Nonstop · 3h 04m

    5:30 AM → 10:34 AM

    85%

    arrive on time

    5:30 AM LAX → 10:34 AM IAH3h 04m

    Spirit 470

    Airbus A321neo · about 2 yrs old
    87% on time · 1.8% cancel
    Find Spirit 470 fares Opens this date on Aviasales

  10. #10 · Nonstop · 3h 18m

    11:59 PM → 5:17 AM

    85%

    arrive on time

    11:59 PM LAX → 5:17 AM IAH3h 18m

    United 2372 · also flew as 2282

    Boeing 737 MAX 9 or 737-900ER · 0–14 yrs old
    85% on time · 0.2% cancel
    Find United 2372 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.

  • United Airlines86%

    3,394 flights · 87% on time as flown · 0.4% cancel

  • Delta Air Lines86%

    646 flights · 87% on time as flown · 1.1% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)82%

    409 flights · 83% on time as flown · 0.4% cancel

  • Spirit Airlines77%

    510 flights · 77% on time as flown · 1.4% cancel

  • Frontier Airlines66%

    332 flights · 64% on time as flown · 1.5% cancel

On time by departure time

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

  • Before 9 AM93%

    1,311 flights · avg delay 5 min

  • 9 AM to noon85%

    991 flights · avg delay 11 min

  • Noon to 3 PM73%

    1,096 flights · avg delay 19 min

  • 3 to 6 PM83%

    431 flights · avg delay 12 min

  • 6 to 9 PM81%

    740 flights · avg delay 13 min

  • After 9 PM88%

    722 flights · avg delay 11 min

Best day: Tuesday (87%). Worst: Sunday (83%).

Smarter routing

Nearby airports that run more on time

  • SNA → IAH 88% chance on time

    John Wayne Orange County International Airport to George Bush Intercontinental Airport · 1,094 flights a year · 36 mi from your airports · yours: 83%

    Rank flightsFares

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