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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.

IAH → LAX

Houston to Los Angeles: 5,294 nonstop flights a year

On time (12 months)

83%

Cancelled

0.7%

avg delay 12 min

Best time to leave

Before 9 AM

94% on time vs 74% 6 to 9 PM

Most reliable airline

Delta

87% chance on time

Check IAH to LAX fares

Lowest nonstop fare seen in the next two months: $72 (Frontier 1755 on 2026-11-18). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

18 nonstop, 28 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 29m

    6:00 AM → 7:29 AM

    95%

    arrive on time

    6:00 AM IAH → 7:29 AM LAX3h 29m

    United 417 · also flew as 2431

    Boeing 737-900ER or 737 MAX 9 · 1–18 yrs old
    96% on time · 0.5% cancel
    Find United 417 fares Opens this date on Aviasales

  2. #2 · Nonstop · 3h 38m

    6:45 AM → 8:38 AM

    93%

    arrive on time

    6:45 AM IAH → 8:38 AM LAX3h 38m

    Delta 1216

    Airbus A319 · 23–26 yrs old
    94% on time · 0.7% cancel
    Find Delta 1216 fares Opens this date on Aviasales

  3. #3 · Nonstop · 3h 43m

    7:22 AM → 9:05 AM

    92%

    arrive on time

    7:22 AM IAH → 9:05 AM LAX3h 43m

    United 2600

    Boeing 737-900ER or 737 MAX 9 · 1–17 yrs old
    92% on time · 0.1% cancel
    Find United 2600 fares Opens this date on Aviasales

  4. #4 · Nonstop · 3h 43m

    12:25 PM → 2:08 PM

    87%

    arrive on time

    12:25 PM IAH → 2:08 PM LAX3h 43m

    United 2460

    Boeing 737 MAX 9 or 737-900ER · 0–30 yrs old
    88% on time · 0.3% cancel
    Find United 2460 fares Opens this date on Aviasales

  5. #5 · Nonstop · 3h 43m

    9:37 AM → 11:20 AM

    87%

    arrive on time

    9:37 AM IAH → 11:20 AM LAX3h 43m

    United 469

    Boeing 737 MAX 9 · 0–11 yrs old
    87% on time · 0.5% cancel
    Find United 469 fares Opens this date on Aviasales

  6. #6 · Nonstop · 3h 43m

    2:20 PM → 4:12 PM

    87%

    arrive on time

    2:20 PM IAH → 4:12 PM LAX3h 43m

    United 1945

    Boeing 737-900ER or 737 MAX 9 · 1–18 yrs old
    87% on time · 0.1% cancel
    Find United 1945 fares Opens this date on Aviasales

  7. #7 · Nonstop · 3h 43m

    2:47 PM → 4:30 PM

    85%

    arrive on time

    2:47 PM IAH → 4:30 PM LAX3h 43m

    United 1355

    Boeing 737 MAX 9 or 737-900ER · 0–13 yrs old
    86% on time · 0.3% cancel
    Find United 1355 fares Opens this date on Aviasales

  8. #8 · Nonstop · 3h 41m

    4:00 PM → 5:41 PM

    84%

    arrive on time

    4:00 PM IAH → 5:41 PM LAX3h 41m

    Delta 1563 · also flew as 1035

    Airbus A319 · 23–27 yrs old
    86% on time · 1.3% cancel
    Find Delta 1563 fares Opens this date on Aviasales

  9. #9 · Nonstop · 3h 42m

    4:08 PM → 5:50 PM

    83%

    arrive on time

    4:08 PM IAH → 5:50 PM LAX3h 42m

    Delta 1143

    Airbus A319 · 23–27 yrs old
    84% on time · 1.5% cancel
    Find Delta 1143 fares Opens this date on Aviasales

  10. #10 · Nonstop · 3h 50m

    6:50 PM → 8:47 PM

    82%

    arrive on time

    6:50 PM IAH → 8:47 PM LAX3h 50m

    United 2658

    Boeing 737 MAX 9 or 737-900ER · 1–17 yrs old
    82% on time · 0.2% cancel
    Find United 2658 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.

  • Delta Air Lines87%

    646 flights · 88% on time as flown · 1.1% cancel

  • United Airlines83%

    3,394 flights · 84% on time as flown · 0.4% cancel

  • Spirit Airlines83%

    513 flights · 84% on time as flown · 1.4% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)79%

    409 flights · 79% on time as flown · 0.5% cancel

  • Frontier Airlines71%

    332 flights · 70% on time as flown · 1.0% cancel

On time by departure time

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

  • Before 9 AM94%

    1,289 flights · avg delay 5 min

  • 9 AM to noon80%

    591 flights · avg delay 12 min

  • Noon to 3 PM87%

    693 flights · avg delay 10 min

  • 3 to 6 PM80%

    962 flights · avg delay 15 min

  • 6 to 9 PM74%

    1,179 flights · avg delay 19 min

  • After 9 PM79%

    580 flights · avg delay 15 min

Best day: Wednesday (85%). Worst: Sunday (80%).

Smarter routing

Nearby airports that run more on time

  • IAH → SNA 87% chance on time

    George Bush Intercontinental Airport to John Wayne Orange County International Airport · 1,094 flights a year · 36 mi from your airports · yours: 82%

    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