Flights Islip → Baltimore
ISP → BWI
Route overview
The flight route from Islip to Baltimore has an on-time performance rate of 81%, with an average delay of 7 minutes. The destination airport, which opened in 1947, serves over 22 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Islip (ISP) → Baltimore (BWI) route is operated by Southwest Airlines. Across 392 flights monitored in recent months, 82% arrived on time (within 15 min of schedule), with an average delay of 7 minutes. The cancellation rate is 3.06%. FlightGuard's average computed risk is 18.8/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Baltimore the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Islip the average ATFM delay is 3.5 minutes.
Heading to Baltimore: what to expect in this direction
Flying from Islip (ISP) to Baltimore (BWI) heads south-west for about 353 km, a flight time of roughly 52m.
Departures from Islip on this leg cluster in the overnight window: about 40% of ISP-BWI flights take off then.
Air-traffic congestion: departing Islip the average ATFM delay is 3.5 min (airspace/NAS (BTS)); arriving into Baltimore it is 2.0 min (atfm).
Across 392 tracked ISP-BWI flights, 82% left on time with an average delay of 7 min and a 3.1% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
Airlines operating ISP-BWI
Airports
Frequently asked questions about ISP-BWI
On the Islip (ISP) -> Baltimore (BWI) route, on-time performance is 82% with an average delay of 7 minutes, based on 392 tracked flights.
The cancellation rate on Islip-Baltimore is 3.06% across 392 monitored flights.
The route is operated by 1 airline: Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Baltimore, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
