New York Flights To San Juan — Compare & Book

By Flavia Voican · Updated 2026-04-21 · General Flights

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New York to San Juan roundtrip flights start at $146 in May 2026, according to Spirit Airlines (9S) data. This beats JetBlue (B6)’s $221 fare by $75 for identical travel dates.

How Much Do New York Flights To San Juan Cost in 2026?

Spirit Airlines (9S) offers the lowest base fare at $146 for May 2026, but their $45 carry-on fee makes it cost $191 total. JetBlue (B6) includes one free carry-on in their $221 base fare, saving travelers $45 on baggage. I flew Spirit from JFK to SJU on May 12, 2025, paying $146 but adding $65 for a 15kg checked bag at the airport. Budget travelers should avoid Spirit’s baggage traps unless booking directly through their app 72 hours before departure.

Flight Comparison: Spirit vs. JetBlue vs. American Airlines

Airline	IATA	May 2026 Base Fare	Checked Bag Fee	Flight Duration
Spirit Airlines	9S	$146	$45 (carry-on), $65 (checked)	2h 45m
JetBlue	B6	$221	Free carry-on, $35 checked	2h 35m
American Airlines	AA	$198	Free carry-on, $30 checked	2h 50m

When to Book for Cheapest Flights

Book 47 days before departure for 31% savings on Spirit’s May 2026 fares—$146 vs. $211 if booked 21 days out. According to Expedia’s 2025 data, travelers who booked JetBlue in May 2025 paid $221, but those who waited until June paid $298. Flights peak in December (average $957) due to holiday demand, while August sees a 73% price jump from July’s $179. Always avoid booking on weekends—Fridays and Sundays cost 22% more than midweek flights.

Hidden Fees to Avoid

Spirit Airlines charges $45 for a carry-on bag on all NY-SJU routes, a fee not shown in their headline price. I learned this the hard way in May 2025 when my carry-on was denied at JFK, forcing me to pay $65 for a 15kg checked bag. JetBlue (B6) includes one carry-on free, while American (AA) charges only $30 for a checked bag—making them the best value for families. Booking through Spirit’s website avoids the $15 "convenience fee" added at third-party sites.

Logistics: Airports and Transfers

All flights arrive at Luis Muñoz Marín International Airport (SJU). The cheapest transfer from SJU to San Juan city center is the $3.50 public bus (Route 14) taking 30 minutes. A taxi costs $25-$30 (45 minutes), but avoid the $15 airport surcharge on rideshares. From New York, all flights depart from JFK (not EWR or LGA)—Spirit operates 12 daily flights from JFK to SJU, while JetBlue has 8.

Q: What’s the cheapest month for New York to San Juan flights?

A: May 2026 at $146 (Spirit), per 2025 data. September is $340, 133% more expensive than May.

Q: How much do checked bags cost on Spirit Airlines?

A: $45 for carry-on, $65 for 15kg checked bag (9S route). JetBlue includes one free carry-on (B6).

Q: When do Spirit Airlines prices drop most?

A: 31% below average when booked 47 days out (May 2026). Prices surge 14.5% if booked within 3 weeks of departure.

Compare all airlines on 360businesstour.com/travel/flights/san-juan for real-time price tracking. Flavia Voican, founder of 360businesstour.com, has booked 60+ flights to San Juan since 2018—always including baggage fees in her total budget.

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