Miami to Boston in September 2026

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

Lowest this month $119

Highest this month $229

Sample fare $119

Airports MIA–BOS

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September 2026 price calendar

From $119 · up to $229

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $172 2 $179 3 $183 4 $229 5 $200 6 $171 7 $223 8 $179 9 $124 10 $144 11 $123 12 $122 13 $120 14 $120 15 $120 16 $120 17 $120 18 $120 19 $120 20 $120 21 $120 22 $119 23 $119

Boston BOS

$119

Sep 22, 5:32am · 6h 35m · 1 stop

MIA → BOS · Frontier Airlines

Boston BOS

$119

Sep 23, 5:32am · 6h 37m · 1 stop

MIA → BOS · Frontier Airlines

Boston BOS

$122

Sep 12, 5:22am · 6h 37m · 1 stop

MIA → BOS · Frontier Airlines

This page is only September 2026 on the Miami 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 Miami to Boston in September 2026.