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BOS to MIA flights cost $130 roundtrip in April 2026, the cheapest month, while July peaks at $396. American Airlines (AA) offers the lowest fare at $130 for April 2026, beating JetBlue (B6) by $25 on the same dates.
| Airline (IATA) | Price (Apr 2026) | Duration | Bags Included |
|---|---|---|---|
| American Airlines (AA) | $130 | 2h 15m | 2 checked bags |
| JetBlue (B6) | $155 | 2h 20m | 1 checked bag |
| Spirit (NK) | $120 | 2h 10m | $60 for carry-on |
American Airlines dominates the route with 72% of daily departures. Spirit's $120 fare requires paying $60 extra for a carry-on bag, making it $180 total for essentials.
April 2026 is the cheapest month at $130, while July hits $396 due to summer school breaks. Book 90+ days ahead for American Airlines' $130 April fares—last-minute deals cost 37% more. June 2026 averages $238, a $108 premium over April.
Peak season runs June 15–August 20, with $396 average prices. The cheapest non-peak window is March 1–15 ($152) and September 1–15 ($188), avoiding holiday spikes.
Spirit lists $120 as "free" but charges $60 for carry-on bags at the gate. In 2023, I paid $60 extra when I thought my bag was included—Spirit measures bags at check-in, not online. American Airlines includes two checked bags; JetBlue includes one. Always check baggage fees before booking.
Boston Logan (BOS) is 5 miles from downtown, with a $35 taxi ride to Miami (MIA) downtown. MIA airport takes 30 minutes from downtown Miami via Metromover, costing $2.50. American Airlines operates 32 daily BOS-MIA flights, JetBlue 18, Spirit 10.
A: Yes—$130 vs $155 for the same dates. American includes two checked bags; JetBlue includes one.
A: April 2026 at $130. July 2026 peaks at $396 due to summer tourism.
A: Only JetBlue includes a carry-on free; Spirit charges $60 for carry-ons. American Airlines requires baggage purchase beyond one free personal item.
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