Buffalo to Islip flights in September 2027

Saved fares include round trips from $371 and one-way flights from $195 for one adult in economy. Fare observations: October 29, 2026.

Departure airports: Buffalo (BUF). Destination: Islip (ISP).

BUF → ISP · September 2027 · One adult in economy

Travel dates	Airline	Stops	Total (USD)
Sep 1, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 1, 2027 – Sep 4, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 1, 2027 – Sep 8, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 2, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 2, 2027 – Sep 5, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 2, 2027 – Sep 9, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 3, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$223
Sep 3, 2027 – Sep 6, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$425
Sep 3, 2027 – Sep 10, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 4, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$223
Sep 4, 2027 – Sep 7, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 4, 2027 – Sep 11, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 5, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$223
Sep 5, 2027 – Sep 8, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 5, 2027 – Sep 12, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 6, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$223
Sep 6, 2027 – Sep 9, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 6, 2027 – Sep 13, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$398
Sep 7, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 7, 2027 – Sep 10, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 7, 2027 – Sep 14, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 8, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 8, 2027 – Sep 11, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 8, 2027 – Sep 15, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 9, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 9, 2027 – Sep 12, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 9, 2027 – Sep 16, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 10, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 10, 2027 – Sep 13, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 10, 2027 – Sep 17, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 11, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 11, 2027 – Sep 14, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 11, 2027 – Sep 18, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 12, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 12, 2027 – Sep 15, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 12, 2027 – Sep 19, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 13, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 13, 2027 – Sep 16, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 13, 2027 – Sep 20, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 14, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 14, 2027 – Sep 17, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 14, 2027 – Sep 21, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 15, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 15, 2027 – Sep 18, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 15, 2027 – Sep 22, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 16, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 16, 2027 – Sep 19, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 16, 2027 – Sep 23, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 17, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 17, 2027 – Sep 20, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 17, 2027 – Sep 24, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 18, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 18, 2027 – Sep 21, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 18, 2027 – Sep 25, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 19, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 19, 2027 – Sep 22, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 19, 2027 – Sep 26, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 20, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 20, 2027 – Sep 23, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 20, 2027 – Sep 27, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 21, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 21, 2027 – Sep 24, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 21, 2027 – Sep 28, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 22, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 22, 2027 – Sep 25, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 22, 2027 – Sep 29, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 23, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 23, 2027 – Sep 26, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 23, 2027 – Sep 30, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 24, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 24, 2027 – Sep 27, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 24, 2027 – Oct 1, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 25, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 25, 2027 – Sep 28, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 25, 2027 – Oct 2, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 26, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 26, 2027 – Sep 29, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 26, 2027 – Oct 3, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 27, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 27, 2027 – Sep 30, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 27, 2027 – Oct 4, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 28, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 28, 2027 – Oct 1, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 28, 2027 – Oct 5, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 29, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 29, 2027 – Oct 2, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 29, 2027 – Oct 6, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 30, 2027 · One way	Southwest Airlines	Up to 1 stop each way	$195
Sep 30, 2027 – Oct 3, 2027 · 3 nights	Southwest Airlines	Up to 1 stop each way	$371
Sep 30, 2027 – Oct 7, 2027 · 7 nights	Southwest Airlines	Up to 1 stop each way	$371

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All months for Buffalo to Islip

Hotels in New Haven, Connecticut with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in New Haven, Connecticut has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

Hotel details in New Haven, Connecticut: Graduate by Hilton New Haven · La Quinta Inn & Suites by Wyndham New Haven · Super 8 by Wyndham Milford/New Haven · All 28 hotels in New Haven, Connecticut

Near ISP: Hyatt Regency Long Island (Hauppauge) · Hampton Inn Long Island-Brookhaven (Farmingville)

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