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
Filed traffic dataIn June 2026, Southwest Airlines was the only carrier flying nonstop BWI–ISP; the Boeing 737-700 was the most common aircraft at 59% of departures; flights ran 69% full.
Departures
275
June 2026
Seats
42,007
both directions
Passengers
29,163
both directions
Load factor
69.4%
RPM ÷ ASM
Who flies BWI–ISP?
Southwest Airlines was the only carrier to fly nonstop BWI–ISP in June 2026 (275 departures).
- WN
275 departures · 42,007 seats
Share of departures100.0%69.4%
Load
What plane flies BWI–ISP?
In June 2026, the Boeing 737-700 flew 59% of BWI–ISP departures — more than any other aircraft type.
- Boeing 737-700
161 departures · 76.1% load
58.6% - Boeing 737 MAX 8
82 departures · 63.4% load
29.8% - Boeing 737-800
32 departures · 58.4% load
11.6%
How has BWI–ISP traffic changed?
Nonstop BWI–ISP departures rose from 246 in July 2025 to 275 in June 2026.
Monthly nonstop BWI–ISP traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
May 2026
228 departures · 26,525 passengers
69.8%
Load
June 2026
275 departures · 29,163 passengers
69.4%
Load
By direction
Each direction is filed separately — they rarely match.
ISP → BWI
68.5% full
138 departures · 14,560 passengers
BWI → ISP
70.4% full
137 departures · 14,603 passengers
Nonstop BWI–ISP traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
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 June 2026, the Boeing 737-700 flew the largest share of departures (58.6%), followed by the Boeing 737 MAX 8 (29.8%).
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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