⚡ Fare recorded April 25, 2026 · Prices change daily

Boston to San Juan flights

Boston (BOS) to San Juan (SJU): 1,679 miles (2,702 km) great-circle, about 3h 50m nonstop by our estimate. Cheapest fare observed: $297 round-trip on Spirit, with 1 stop, departing July 2, 2026.

NKSpiritNK520
Depart
BOS
Boston, USA
05:45
2026-07-02
✈
Arrive
SJU
San Juan, United States
Returns 17:15
2026-07-14
Stops
1 stop
Distance
1,679 mi
Est. nonstop time
3h 50m
Trip type
Round-trip
$297
Round-trip · per person
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About this flight

When did the cheapest Boston to San Juan fare fly?

$297 round-trip, Spirit NK520, departing 2026-07-02 at 05:45, returning 2026-07-14. The recorded itinerary left on a Thursday, returning on a Tuesday 12 nights later; the fare was observed 68 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.

Route facts

How far is Boston from San Juan?

  • Distance: 1,679 miles (2,702 km) great-circle, heading south.
  • Estimated nonstop flight time: about 3h 50m.
  • Departure airport: General Edward Lawrence Logan International Airport (BOS), Boston, United States, UTC-4 on July 2, 2026.
  • Arrival: Luis Munoz Marin International Airport (SJU), United States, UTC-4 on July 2, 2026.
  • Time difference: none on the recorded date.
  • Route type: domestic, within United States.
  • Arrival airport elevation: 9 ft.
  • Recorded itinerary: Spirit NK520, 1 stop, round-trip, 12 days between departure and return.
Fare comparison

How does the Boston to San Juan fare compare with other routes from BOS?

At $297, it ranked 12th of the 30 round-trip fares we recorded from BOS (median $623). That is 17.7 cents per great-circle mile (round-trip price over one-way distance), close to the BOS median of 19.1 cents across 30 round-trip routes.

Routes from BOS of similar length: Santo Domingo (1,655 mi) at $308 and Lubbock (1,770 mi) at $649.

Spirit had the cheapest fare on 3 of 30 BOS routes. It is the 20th longest of the 30 routes we track from BOS.

Other ways in

What did other cities pay to fly to San Juan?

Of 20 departure airports with a fare to San Juan, Boston (BOS) ranked 15th at $297. Lowest: $127 from Orlando (MCO); highest: $632 from Washington DC (IAD); 7 nonstop. Cheapest-fare airlines (routes): Frontier (9), Spirit (4), American Airlines (2), JetBlue (2), Southwest (1) and United Airlines (1), plus 1 more.

Sources

Where do these numbers come from?

Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Puerto_Rico; flight time is our estimate.

FAQ

Boston to San Juan flight questions

How far is Boston from San Juan by plane?

+
Boston is about 1,679 miles (2,702 km) from San Juan on a great-circle line from General Edward Lawrence Logan International Airport (BOS) to Luis Munoz Marin International Airport (SJU), heading south. It is the 20th longest of the 30 routes we track from BOS. The recorded itinerary had 1 stop, so the distance flown was longer.

How long is the flight from Boston to San Juan?

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About 3h 50m nonstop by our estimate for 1,679 miles (500 mph cruise plus 30 minutes, not a timetable). The recorded Spirit fare was with 1 stop. 20 airports in our feed had a fare to San Juan; this one ranked 15th, and 7 of the 20 were nonstop.

What is the time difference between Boston and San Juan?

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On July 2, 2026, Boston was on UTC-4 (America/New_York) and San Juan on UTC-4 (America/Puerto_Rico), so the two cities shared the same clock time: noon in Boston was 12:00 in San Juan. Daylight saving changes it: in mid-January 2026 the gap is San Juan 1 hour ahead, in mid-July no difference.

How much is a flight from Boston to San Juan?

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As observed on April 25, 2026: $297 per person round-trip on Spirit flight NK520, departing July 2, 2026, returning July 14, 2026, with 1 stop. At $297, it ranked 12th of the 30 round-trip fares we recorded from BOS (median $623). That is 17.7 cents per great-circle mile (round-trip price over one-way distance), close to the BOS median of 19.1 cents across 30 round-trip routes. Prices change daily, so check the live fare.

Is there a nonstop flight from Boston to San Juan?

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The cheapest recorded fare had 1 stop; our feed keeps only the cheapest fare per route, so a pricier nonstop may exist. Into San Juan, 7 of the 20 recorded fares were nonstop. From BOS, 4 of 30 were. Routes from BOS of similar length: Santo Domingo (1,655 mi) at $308 and Lubbock (1,770 mi) at $649.

Which airports serve flights from Boston to San Juan?

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It departs General Edward Lawrence Logan International Airport (BOS) in Boston, United States, and arrives at Luis Munoz Marin International Airport (SJU) in San Juan, United States. A domestic United States flight. Spirit had the cheapest fare on 3 of 30 BOS routes.

Where else near San Juan can you fly from Boston?

Santo Domingo (SDQ) $308Santiago de los Caballeros (STI) $347Miami (MIA) $203Fort Lauderdale (FLL) $133Orlando (ORL) $125Jacksonville (JAX) $212All flights from Boston →

Other cities with flights to San Juan

From Orlando (MCO) $127From Philadelphia (PHL) $134From Tampa (TPA) $142From Punta Cana (PUJ) $148From Newark (EWR) $150From Fort Lauderdale (FLL) $163

Ready to fly?

Book Spirit BOS → SJU · $297 →