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

Route on-time record

PBI to BWI: most on-time flights and the best time to fly

West Palm Beach (Palm Beach International Airport) to Baltimore (Baltimore/Washington International Thurgood Marshall Airport). 1,234 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was Southwest 4145 at 6:45 AM.

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

PBI → BWI

West Palm Beach to Baltimore: 1,234 nonstop flights a year

On time (12 months)

81%

Cancelled

1.4%

avg delay 14 min

Best time to leave

Before 9 AM

95% on time vs 67% 6 to 9 PM

Most reliable airline

Southwest

80% chance on time

Check PBI to BWI 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 · Southwest 4145

    6:45 AM → 9:10 AM2h 25m nonstop

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

    93%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 96% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 67%).
    • Departs outside PBI's trouble window (11 AM to 5 PM, when 84% of its 31 ground stops and delay programs started).

    Limited track record · 55 flights

    Find Southwest 4145 fares Opens this date on Aviasales

  2. #2 · Southwest 930

    7:00 AM → 9:25 AM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    91%

    chance on time

    On time (history)
    97%
    Cancelled
    6.1%
    Avg arrival delay
    9 min
    • Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 6.1% of the time (2 of 33).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 67%).
    • Departs outside PBI's trouble window (11 AM to 5 PM, when 84% of its 31 ground stops and delay programs started).

    Limited track record · 31 flights

    Find Southwest 930 fares Opens this date on Aviasales

  3. #3 · Southwest 3171

    12:10 PM → 2:40 PM2h 30m nonstop

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

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 87% of the time (23 flights, Jun 2025 to May 2026).
    • Departs inside PBI's trouble window: 84% of its 31 ground stops and delay programs started between 11 AM and 5 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 3171 fares Opens this date on Aviasales

  4. #4 · Southwest 1276

    11:40 AM → 2:10 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 1200; its record covers all of them.

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    3.1%
    Avg arrival delay
    5 min
    • Arrived on time 87% of the time (61 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (2 of 64).
    • Departs inside PBI's trouble window: 84% of its 31 ground stops and delay programs started between 11 AM and 5 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 61 flights

    Find Southwest 1276 fares Opens this date on Aviasales

  5. #5 · Southwest 4158

    7:15 PM → 9:45 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    76%

    chance on time

    On time (history)
    77%
    Cancelled
    6.1%
    Avg arrival delay
    26 min
    • Arrived on time 77% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 6.1% of the time (2 of 33).
    • Leaves in this route's least on-time window (6 to 9 PM: 67% on time; Before 9 AM: 95%).
    • Departs outside PBI's trouble window (11 AM to 5 PM, when 84% of its 31 ground stops and delay programs started).

    Limited track record · 31 flights

    Find Southwest 4158 fares Opens this date on Aviasales

  6. #6 · Southwest 3699

    6:25 PM → 8:55 PM2h 30m nonstop

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

    73%

    chance on time

    On time (history)
    76%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 76% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 67% on time; Before 9 AM: 95%).
    • Departs outside PBI's trouble window (11 AM to 5 PM, when 84% of its 31 ground stops and delay programs started).

    Limited track record · 55 flights

    Find Southwest 3699 fares Opens this date on Aviasales

  7. #7 · Southwest 1924

    3:05 PM → 5:35 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    72%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 64% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Departs inside PBI's trouble window: 84% of its 31 ground stops and delay programs started between 11 AM and 5 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 33 flights

    Find Southwest 1924 fares Opens this date on Aviasales

  8. #8 · Southwest 1674

    4:15 PM → 6:45 PM2h 28m nonstop

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

    68%

    chance on time

    On time (history)
    67%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 67% of the time (46 flights, Jun 2025 to May 2026).
    • Never cancelled in 46 scheduled flights.
    • Departs inside PBI's trouble window: 84% of its 31 ground stops and delay programs started between 11 AM and 5 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 46 flights

    Find Southwest 1674 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines80%

    1,234 flights · 81% on time as flown · 1.4% cancel

On time by departure time

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

  • Before 9 AM95%

    365 flights · avg delay 5 min

  • 9 AM to noon82%

    239 flights · avg delay 11 min

  • Noon to 3 PM78%

    160 flights · avg delay 10 min

  • 3 to 6 PM71%

    254 flights · avg delay 20 min

  • 6 to 9 PM67%

    216 flights · avg delay 29 min

Best day: Tuesday (85%). Worst: Sunday (77%).

Smarter routing

Nearby airports that run more on time

  • FLL → IAD 85% chance on time

    Fort Lauderdale Hollywood International Airport to Washington Dulles International Airport · 743 flights a year · 87 mi from your airports · yours: 80%

    Rank flightsFares

  • PBI → IAD 83% chance on time

    Palm Beach International Airport to Washington Dulles International Airport · 333 flights a year · 45 mi from your airports · yours: 80%

    Rank flightsFares

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
85
F
84
M
79
A
82
M
82
J
76
J
70
A
79
S
85
O
90
N
90
D
81

What delays this route

  • Late-arriving aircraft53%
  • Airline (crew, maintenance, boarding)26%
  • Air traffic control and airport volume19%
  • Severe weather2%

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

PBI to BWI questions

What time of day is best to fly PBI to BWI?
Before 9 AM: 95% of flights arrived on time, against 67% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from PBI to BWI?
Southwest, with a season-adjusted 80% chance of operating and arriving on time over 1,234 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 PBI to BWI?
July (70% on time); the best was November (90%), 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 PBI

Live status: FAA delays and ground stops