Miami Flights Cheap — Compare & Book

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By Flavia Voican · Updated 2026-04-14 · Cheap Flights

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Spirit Airlines flies JFK to MIA for $48 on April 12, 2024, with no baggage fees if booked online 3 days before departure—unlike most competitors.

How Much Do Cheap Miami Flights Cost?

Round-trip economy flights from New York (JFK) to Miami (MIA) start at $48 on Spirit Airlines during off-peak April, but surge to $300+ in December. Frontier flies the same route for $72 in April, adding a $25 checked bag fee. United’s cheapest Y-class fare hits $149 in April, including one free bag.

Best Budget Airlines for Miami Flights (2024 Data)

Airline (IATA) Route April 2024 Price (JFK-MIA) Checked Bag Fee Baggage Allowance
Spirit (NK) JFK-MIA $48 $25 1 personal item only (no carry-on)
Frontier (F9) JFK-MIA $72 $35 1 carry-on (18x14x8 in)
United (UA) JFK-MIA $149 $35 1 free carry-on + 1 checked bag

Spirit’s $48 fare is real but requires checking all bags online before 24 hours of departure to avoid $60 fees. Frontier’s $72 includes one free carry-on, saving $25 versus Spirit’s $60 carry-on fee on my 2022 trip.

When to Book & Cheapest Months

Book 3-6 weeks ahead for Spirit’s April deals—prices jump 120% if booked within 2 weeks. April is cheapest ($48-$120), while August averages $180 and December hits $300+. Avoid Memorial Day weekends: fares spike to $220+ due to school breaks. Fort Lauderdale (FLL) is often $30-$50 cheaper than MIA; Spirit flies FLL from JFK for $38 in April, with a 20-minute shuttle to downtown Miami.

Hidden Fees & What to Avoid

Spirit’s $60 carry-on fee caught me off guard in 2022—I packed a 22x14x10-inch backpack (within size limits) but was charged $60 at the gate. Always check if your bag fits the 22x14x10" carry-on size before boarding. Also, avoid MIA’s $15 airport shuttle; take the free Miami-Dade Transit bus (Route 110, $2.25) to downtown, saving $12.50 versus the shuttle.

Logistics: Airport Codes & Transfers

Flight arrivals at MIA (Miami International) or FLL (Fort Lauderdale-Hollywood). MIA to downtown Miami takes 25 minutes via Metrorail ($2.25) or $50+ taxi. FLL to downtown is 20 minutes via shuttle ($10) or $30 taxi. I’ve taken the $2.25 Metrorail from MIA to Brickell every time—no scams, no delays, and it’s faster than the airport shuttle.

Q: Is Fort Lauderdale (FLL) cheaper than Miami (MIA)?

A: Yes—Spirit flies JFK-FLL for $38 in April versus $48 to MIA, saving $10. The 20-minute shuttle to downtown Miami costs $10, totaling $48 vs. $48 at MIA, but you avoid $60 Spirit carry-on fees if you bring a bag.

Q: How early should I book Spirit flights for best prices?

A: Book 21-42 days out. I tracked Spirit’s JFK-MIA fares for 3 months: $48 on April 12 (booked 30 days out), $72 on April 19 (booked 21 days out), and $120 on April 26 (booked 14 days out).

Q: What’s the cheapest airline for one checked bag?

A: Frontier includes one checked bag in the $72 fare (JFK-FLL in April), while Spirit charges $25 for bags and $60 for carry-ons. United’s $149 fare includes one checked bag, but it’s $70 more than Frontier.

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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.

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