Boston (BOS) to San Juan (SJU) is about 1,680 miles and typically takes 3 h 55 min by air. Some carriers have hubs at both ends, which makes frequent nonstops more likely. Call (800) 490-3234 for live fares.
BOS to SJU at a glance
| Route | Boston (BOS) to San Juan (SJU) |
|---|---|
| Distance | about 1,680 miles / 2,700 km |
| Typical flight time | 3 h 55 min (estimate) |
| Time difference | 1 hours ahead |
| Route type | Domestic (U.S.) |
| Airlines with hubs here | Delta Air Lines and JetBlue Airways |
About the Boston to San Juan route
Travelers between Boston and San Juan typically choose between a nonstop flight and a one-stop routing through a hub, depending on price and schedule. The distance is about 1,680 miles.
Flight time and distance
A typical flight takes about 3 h 55 min gate to gate, with a realistic range of 3 h 35 min to 4 h 20 min depending on wind, routing and aircraft. That is an estimate based on the distance of roughly 1,680 miles (2,700 km), not a published schedule.
San Juan is 1 hour ahead of Boston on standard time, so the arrival time on your ticket will look different from the flight duration.
Among the 200 routes in our guides, BOS to SJU is longer than about 60% of them.
For comparison, Boston to Denver (BOS to DEN) is about 1,750 miles, so San Juan is a bit closer away from BOS.
The airports
Boston Logan International Airport (BOS)
Logan is only a few minutes by water or road from downtown Boston. Full BOS guide.
Luis Munoz Marin International Airport (SJU)
San Juan is the main airport for Puerto Rico, a U.S. territory, so travelers from the mainland do not need a passport. Full SJU guide.
Nearby alternatives: around Boston, Providence. Price all of them before you commit, especially if you have flexible dates.
Airlines on this route
JetBlue Airways has a hub at both ends, so it is the most likely to offer frequent nonstop service and easy rebooking on this route.
Delta Air Lines also has a major presence at one of the two airports.
Airlines add and drop frequencies throughout the year. Our agents can check what is actually scheduled on your dates.
Common connection points
A one-stop trip would most naturally connect through a hub such as Delta Air Lines via New York (JFK), which adds about 110 miles (7% beyond the direct distance) or JetBlue Airways via New York (JFK), which adds about 110 miles (7% beyond the direct distance). Choose the connection with the best weather odds for your travel month and leave a comfortable layover; our layover guide explains how much time is realistic.
Best time to fly
Seasonal factors to weigh: at SJU, winter is the best weather; hurricane season runs through November. At BOS, winter nor'easters and summer fog are the main causes of delays.
Ground transport
Getting to and from BOS
The MBTA Blue Line and Silver Line buses connect Logan to downtown, and a water shuttle links the terminals to the Seaport.
Getting to and from SJU
A taxi flat rate applies to the major tourist zones, and rideshares are widely used.
Booking tips
If you are flying to San Juan for a vacation, compare the fare with bags included, since leisure travelers often check luggage. Our fare-type guide shows what low fares leave out.
Frequently asked questions
How long is the flight from Boston to San Juan?
A typical BOS to SJU flight takes about 3 h 55 min, with a likely range of 3 h 35 min to 4 h 20 min. Actual time depends on wind, routing, aircraft and whether you connect.
How far is San Juan from Boston by air?
The great-circle distance between BOS and SJU is about 1,680 miles (2,700 km).
Which airlines fly from Boston to San Juan?
Delta Air Lines and JetBlue Airways have a major presence at BOS or SJU, and service varies by season. Ask us to check current nonstop and connecting options.
What is the time difference between Boston and San Juan?
San Juan is 1 hour ahead of Boston on standard time. Daylight saving time can change the gap for part of the year.
Are there other airports near Boston?
Yes. Nearby alternatives include Providence. Comparing them can change both fare and travel time.
When is the best time to book BOS to SJU?
For leisure routes like this, book early for school holidays and peak seasons. Domestic fares are often competitive one to three months ahead, while international trips benefit from more lead time. Compare several dates, since fares are priced flight by flight.
Explore related routes
More flights involving Boston (BOS)
- Atlanta to BostonATL to BOS
- Boston to CharlotteBOS to CLT
- Boston to DetroitBOS to DTW
- Boston to Las VegasBOS to LAS
- Boston to LondonBOS to LHR
- Boston to Los AngelesBOS to LAX
More flights involving San Juan (SJU)
- Fort Lauderdale to San JuanFLL to SJU
- New York to San JuanJFK to SJU
- Orlando to San JuanMCO to SJU
- San Juan to ChicagoSJU to ORD
- San Juan to PhiladelphiaSJU to PHL
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.