WN4742Southwest Airlines · BWI → BUF
live · 25m ago
Route confirmed Southwest Airlines

WN4742 BaltimoreBWI · 22:50 BuffaloBUF · 00:10

WN4742 by Southwest Airlines flies from Baltimore (BWI) to Buffalo (BUF).

Right nowNext departure today Operates daily
21:05

scheduled from BWI

⚖ WN4742 typically leaves +24 and lands −12. The air wins minutes back.
Typical gate push+24 minmedian posted departure
Typical arrival−12 minmedian over 11 operations
Wins back in air~36 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 12tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-02
+24 gate · −12 arrival
10-30
+43 gate · +11 arrival
10-29
+8 gate · −26 arrival
10-28
+19 gate · −14 arrival
10-27
+15 gate · −18 arrival
10-26
+24 gate
10-25
+37 gate · +2 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −12 min · 0 cancelled · 12 operations tracked

The route today

live boards
BWIBaltimoreOn-time likelyBWI delay board →
BUFBuffaloOn-time likelyBUF delay board →
BWI→BUFevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
1.5%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at BWI and BUF are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Baltimore

Forecast

Tue 3 Nov, local date

High21°Clikely 19°C to 23°C
Low8°Clikely 5°C to 10°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Buffalo

Forecast

Tue 3 Nov, local date

High22°Clikely 20°C to 23°C
Low13°Clikely 11°C to 15°C
  • 71% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Baltimore to Buffalo flights today

same route · Southwest Airlines
WN8804departs 06:30
WN1963departs 06:35
WN3679departs 06:35
WN1316departs 07:05
WN4981departs 07:10
WN1655departs 10:40

If WN4742 is cancelled, these are the other Southwest Airlines nonstop flights from Baltimore to Buffalo on the same day, with scheduled departure times in BWI local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How WN4742 actually runs

Pro Flight Search has tracked every published board update for WN4742 across the BWI and BUF boards: schedule changes, gate pushes and actual clocks. Usually lands ~9 min early. Based on 11 confirmed landings · 11/11 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how WN4742 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-02BWI 22:50 23:14 (+24)BUF 00:10 23:58 (−12)
10-30BWI 22:50 23:33 (+43)BUF 00:10 00:21 (+11)
10-29BWI 22:50 22:58 (+8)BUF 00:10 23:44 (−26)
10-28BWI 21:05 21:24 (+19)BUF 22:25 22:11 (−14)
10-27BWI 21:05 21:20 (+15)BUF 22:25 22:07 (−18)
10-26BWI 22:50 23:14 (+24)BUF
10-25BWI 22:30 23:07 (+37)BUF 23:50 23:52 (+2)
10-24BWI 20:25 20:42 (+17)BUF 21:45 21:26 (−19)
10-23BWI 22:25 23:04 (+39)BUF 23:45 23:50 (+5)
10-21BWI 21:05 21:43 (+38)BUF 22:25 22:28 (+3)
10-20BWI 21:05 21:20 (+15)BUF 22:25 22:05 (−20)
10-19BWI 22:25 23:15 (+50)BUF 23:45 00:00 (+15)

Aircraft

Recent tails: N9011H, N8662F, N8871Q, N8513F.

Board clocks recorded as BWI and BUF published them.

Planning around WN4742? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: WN4742 Baltimore to Buffalo on-time performance, measured from the BWI and BUF airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4742
How we measure this →