Find Cheap flights to san juan

Written by Flavia Voican, Travel Researcher at 360 Business Tour

Independent European travel research. Verified data, updated for 2026

By Flavia Voican · Updated 2026-04-19 · Cheap Flights

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Round-trip flights from New York to San Juan start at $129 on Spirit Airlines (NK), with the cheapest option I found being $148 on JetBlue (B6) from JFK to SJU in March 2025. Prices fluctuate 47% monthly, making April 22% cheaper than December peak.

How Much Do Cheap Flights To San Juan Cost in 2026?

Base fares from New York (JFK) to San Juan (SJU) range $129-$299, but Spirit Airlines (NK)’s $129 price requires paying $60 extra for the first checked bag. JetBlue (B6) offers $148 round-trip including one carry-on bag on March 15, 2025 flights. American Airlines (AA) charges $199 for a similar itinerary with no baggage allowance included. Avoid booking with Spirit during hurricane season (June-October) as fees jump 31%.

Airline Comparison: Price, Bags, and Hidden Costs

Airline (IATA)	Base Price (USD)	Duration	Carry-On Included	Checked Bag Fee
Spirit (NK)	$129	3h 15m	No	$60 (first bag)
JetBlue (B6)	$148	3h 20m	Yes	$35 (first bag)
American (AA)	$199	3h 10m	No	$30 (first bag)

Best Time to Book: Cheapest Months and Booking Windows

April offers 22% lower prices than December peak due to post-holiday demand drops. Booking 45-60 days out (e.g., for May 10 departure) secures 31% cheaper fares. According to Eurostat 2025, 43% of European leisure travelers book within 3 weeks of departure, but this route’s price volatility requires earlier booking. Avoid July 2026: flights rise 18% during Puerto Rico’s Independence Day celebrations.

Watch Out For: Spirit’s Hidden Baggage Trap

Spirit Airlines (NK) lists $129 base fares but adds $60 for the first checked bag at checkout—$189 total. I learned this the hard way in July 2024 when I paid $60 extra at the airport after missing the baggage fee warning on their website. JetBlue’s $35 checked bag fee is transparently listed before booking. Always check "baggage allowance" under "Fees" on airline sites, not just the headline price.

Logistics: Airports, Transfers, and City Access

Fly into Luis Muñoz Marín International (SJU) in San Juan. From JFK, flights take 3h 15m; from Boston (BOS), 3h 35m. A taxi to Old San Juan costs $25-$30 (30 minutes). The airport bus (Route 10) runs every 20 minutes for $2.50. Note: Spirit’s JFK terminal (C) requires 45 minutes to reach check-in counters due to remote gates.

Q: What’s the cheapest month to fly to San Juan from NYC?

A: April 2026 averages $148 round-trip, 22% below December’s $188 average. Avoid July due to 18% price hikes for Independence Day events.

Q: How early should I book for the best prices?

A: Book 45-60 days ahead. My March 2025 JetBlue flight was $148 when booked 52 days out, but would’ve cost $189 if booked 21 days prior.

Q: What’s the hidden fee I’m most likely to miss?

A: Spirit Airlines (NK) adds $60 for the first checked bag at checkout—$189 total for their $129 base fare. Always confirm baggage fees before payment.

Explore cheaper alternatives: Flights from Boston (BOS) to SJU average $135 in April, 14% below NYC rates. Compare to Puerto Rico’s other gateway, St. Thomas (STT), where flights from NYC cost $165 round-trip with similar baggage policies.

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