FFL Helper

FFL Helper / St Louis / Boston / September 2026

STL → BOS · 2026-09

St Louis to Boston in September 2026

Dated one-way fares from St Louis to Boston in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $275
Highest this month $275
Sample fare $275
Airports STL–BOS
Search September 2026 tickets

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Other months: September 2026 · Full route

September 2026 price calendar

September 2026

From $275

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Dated fares

Boston BOS

$275

Sep 02, 6:40pm · 2h 35m · 0 stops

STL → BOS · Southwest Airlines

Tickets

Booking STL to BOS in September 2026

This page is only September 2026 on the St Louis to Boston route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book St Louis to Boston in September 2026.