WN420 BuffaloBUF · 17:45 BaltimoreBWI · 18:55
WN420 by Southwest Airlines flies from Buffalo (BUF) to Baltimore (BWI).
scheduled from BUF
⚖ WN420 typically leaves +14 and lands −8. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe 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 operationmedian arrival −8 min · 0 cancelled · 10 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BUF and BWI 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 on this route
ForecastBuffalo to Baltimore with Southwest Airlines · Mon 2 Nov, local date
- Chance a departure leaves 60+ min late
- 4.0%1.0× usual
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 5 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Buffalo to Baltimore flights today
same route · Southwest AirlinesIf WN420 is cancelled, these are the other Southwest Airlines nonstop flights from Buffalo to Baltimore on the same day, with scheduled departure times in BUF 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 WN420 actually runs
Pro Flight Search has tracked every published board update for WN420 across the BUF and BWI boards: schedule changes, gate pushes and actual clocks. Usually lands ~109 min late. Based on 10 confirmed landings · 3/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how WN420 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N8922Q, N8984L, N8916Q, N8764Q.
Board clocks recorded as BUF and BWI published them.
Planning around WN420? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: WN420 Buffalo to Baltimore on-time performance, measured from the BUF and BWI airport boards.
https://proflightsearch.com/flight/WN420
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