Baltimore (BWI) to Islip (ISP)
Flight time
≈ 1h 14m
Bearing
58° NE
Baltimore (BWI) to Islip (ISP) is 220 miles (353 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BWI–ISP
US DOT T-100 · filed dataIn April 2026, Southwest Airlines was the only carrier flying nonstop BWI–ISP; the Boeing 737 MAX 8 was the most common aircraft at 37% of departures; flights ran 64% full.
Departures
213
April 2026
Seats
35,071
both directions
Passengers
22,376
both directions
Load factor
63.8%
passengers ÷ seats
Who flies BWI–ISP?
Southwest Airlines was the only carrier to fly nonstop BWI–ISP in April 2026 (213 departures).
- WN
Southwest Airlines
213 departures · 35,071 seats
Share of departures100.0%63.8%
Load
What plane flies BWI–ISP?
In April 2026, the Boeing 737 MAX 8 flew 37% of BWI–ISP departures — more than any other aircraft type.
- Boeing 737 MAX 8
78 departures · 62.4% load
36.6% - Boeing 737-800
77 departures · 60.9% load
36.1% - Boeing 737-700
58 departures · 71.1% load
27.2%
How has BWI–ISP traffic changed?
Nonstop BWI–ISP departures fell from 229 in May 2025 to 213 in April 2026.
Monthly nonstop BWI–ISP traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
229 departures · 25,060 passengers
67.6%
Load
June 2025
246 departures · 27,661 passengers
71.5%
Load
July 2025
246 departures · 30,599 passengers
79.5%
Load
August 2025
195 departures · 28,012 passengers
88.1%
Load
September 2025
180 departures · 24,022 passengers
81.2%
Load
October 2025
187 departures · 25,294 passengers
80.2%
Load
November 2025
178 departures · 19,388 passengers
67.4%
Load
December 2025
186 departures · 23,017 passengers
76.3%
Load
January 2026
179 departures · 16,261 passengers
57.4%
Load
February 2026
158 departures · 14,034 passengers
57.8%
Load
March 2026
170 departures · 18,795 passengers
70.8%
Load
April 2026
213 departures · 22,376 passengers
63.8%
Load
By direction
The DOT files each direction separately — they rarely match.
BWI → ISP
64.6% full
107 departures · 11,314 passengers
ISP → BWI
63.0% full
106 departures · 11,062 passengers
Nonstop BWI–ISP traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Baltimore
US
Baltimore/Washington International Thurgood Marshall Airport
Coordinates
39.18°N, 76.67°W
Hemisphere
N · W
Frequently asked
How far is Baltimore (BWI) from Islip (ISP)?
BWI to ISP is 220 miles (353 km / 191 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BWI to ISP?
A nonstop covers the 220-mile great-circle distance in roughly 1h 14m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BWI–ISP?
In April 2026, the Boeing 737 MAX 8 flew the largest share of departures (36.6%), followed by the Boeing 737-800 (36.1%).
What mileage do I earn flying BWI–ISP?
Distance-based programs credit off the 220-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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