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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.

EWR → SEA

Newark to Seattle: 2,179 nonstop flights a year

On time (12 months)

73%

Cancelled

2.1%

avg delay 18 min

Best time to leave

9 AM to noon

86% on time vs 64% 6 to 9 PM

Most reliable airline

United

76% chance on time

Check EWR to SEA fares

Lowest nonstop fare seen in the next two months: $168 (United 1330 on 2026-11-10). 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 · United 2607

    1:10 PM → 4:12 PM6h 02m nonstop

    Local times, typical schedule. Last flown 2026-05-18.

    84%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (15 flights, Jun 2025 to May 2026).
    • Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
    • Short track record (15 flights), so its score leans on the airline's record at this hour.

    Limited track record · 15 flights

    Find United 2607 fares Opens this date on Aviasales

  2. #2 · United 1330

    7:50 AM → 11:02 AM6h 12m nonstop

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

    80%

    chance on time

    On time (history)
    80%
    Cancelled
    1.3%
    Avg arrival delay
    10 min
    • Arrived on time 80% of the time (299 flights, Jun 2025 to May 2026).
    • Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).

    Strong track record · 299 flights

    Find United 1330 fares Opens this date on Aviasales

  3. #3 · Alaska 373

    9:30 AM → 12:43 PM6h 13m nonstop

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

    79%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 95% of the time (19 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 86% on time; 6 to 9 PM: 64%).
    • Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
    • Short track record (19 flights), so its score leans on the airline's record at this hour.

    Limited track record · 19 flights

    Find Alaska 373 fares Opens this date on Aviasales

  4. #4 · United 1741

    4:25 PM → 7:36 PM6h 11m nonstop

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

    75%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    18 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
    • 68% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find United 1741 fares Opens this date on Aviasales

  5. #5 · Alaska 280

    3:30 PM → 6:45 PM6h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 359; its record covers all of them.

    74%

    chance on time

    On time (history)
    77%
    Cancelled
    4.2%
    Avg arrival delay
    16 min
    • Arrived on time 77% of the time (297 flights, Jun 2025 to May 2026).
    • Cancelled 4.2% of the time (13 of 310).
    • Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.

    Strong track record · 297 flights

    Find Alaska 280 fares Opens this date on Aviasales

  6. #6 · Alaska 299

    7:29 AM → 10:29 AM6h 09m nonstop

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

    72%

    chance on time

    On time (history)
    73%
    Cancelled
    1.4%
    Avg arrival delay
    16 min
    • Arrived on time 73% of the time (278 flights, Jun 2025 to May 2026).
    • Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).

    Strong track record · 278 flights

    Find Alaska 299 fares Opens this date on Aviasales

  7. #7 · Alaska 247

    5:56 PM → 9:10 PM6h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-12.

    69%

    chance on time

    On time (history)
    95%
    Cancelled
    5.0%
    Avg arrival delay
    2 min
    • Arrived on time 95% of the time (19 flights, Jun 2025 to May 2026).
    • Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
    • Short track record (19 flights), so its score leans on the airline's record at this hour.

    Limited track record · 19 flights

    Find Alaska 247 fares Opens this date on Aviasales

  8. #8 · Alaska 462

    9:00 AM → 12:11 PM6h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 1474; its record covers all of them.

    66%

    chance on time

    On time (history)
    67%
    Cancelled
    2.8%
    Avg arrival delay
    29 min
    • Arrived on time 67% of the time (347 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 86% on time; 6 to 9 PM: 64%).
    • Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).

    Strong track record · 347 flights

    Find Alaska 462 fares Opens this date on Aviasales

  9. #9 · United 1796

    8:30 PM → 11:44 PM6h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2044; its record covers all of them.

    66%

    chance on time

    On time (history)
    66%
    Cancelled
    1.9%
    Avg arrival delay
    24 min
    • Arrived on time 66% of the time (254 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 64% on time; 9 AM to noon: 86%).
    • Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).

    Strong track record · 254 flights

    Find United 1796 fares Opens this date on Aviasales

  10. #10 · Alaska 357

    5:00 PM → 8:13 PM6h 13m nonstop

    Local times, typical schedule. Last flown 2026-04-21.

    62%

    chance on time

    On time (history)
    66%
    Cancelled
    0.0%
    Avg arrival delay
    19 min
    • Arrived on time 66% of the time (35 flights, Jun 2025 to May 2026).
    • Never cancelled in 35 scheduled flights.
    • Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.

    Limited track record · 35 flights

    Find Alaska 357 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines76%

    972 flights · 77% on time as flown · 1.2% cancel

  • Alaska Airlines68%

    1,207 flights · 70% on time as flown · 2.8% cancel

On time by departure time

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

  • Before 9 AM78%

    619 flights · avg delay 12 min

  • 9 AM to noon86%

    216 flights · avg delay 9 min

  • 3 to 6 PM72%

    697 flights · avg delay 23 min

  • 6 to 9 PM64%

    595 flights · avg delay 22 min

Best day: Tuesday (80%). Worst: Friday (71%).

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