Nonstop route
Islip to Baltimore nonstop
Yes — Southwest flies ISP to BWI nonstop year-round — about 5× daily.
ISPIslip
✈
BWIBaltimore
5× daily32.2 flights a week
Year-round32.2/wk Jun vs 20.1/wk Jan
$125–$300typical one-way · median $175
220miles nonstop
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Fares are what people actually paid: half of the 706 tickets in the US DOT fare survey for this route sold between $125 and $300 one way, median $175. That survey runs a couple of quarters behind, so treat it as the shape of the route's pricing rather than today's quote.
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