Cheap flights from Boston to San Juan

Logan
BOS
Luis Muñoz Marín
SJU

Flight deals from Boston to San Juan

Below you can see the best deals on flights Boston — San Juan for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 17 September, from $137.

Top 10 cheap flights from Boston to San Juan

F9
F9
F9
$ 158

Boston — San Juan

12:45—06:44
5 Sep 2026
17 h 59 m
2 stops
DL
F9
F9
$ 160

Boston — San Juan

08:10—02:13
9 Sep 2026
18 h 3 m
2 stops
DL
F9
$ 163

Boston — San Juan

20:45—23:20
4 Sep 2026
26 h 35 m
1 stop
DL
DL
$ 165

Boston — San Juan

13:32—23:49
9 Sep 2026
10 h 17 m
1 stop
DL
DL
$ 165

Boston — San Juan

05:40—13:16
12 Sep 2026
7 h 36 m
1 stop
DL
DL
$ 166

Boston — San Juan

06:05—16:33
6 Sep 2026
10 h 28 m
1 stop
DL
DL
$ 166

Boston — San Juan

09:05—16:33
5 Sep 2026
7 h 28 m
1 stop
DL
DL
$ 166

Boston — San Juan

05:30—13:16
5 Sep 2026
7 h 46 m
1 stop
DL
$ 167

Boston — San Juan

08:55—12:57
11 Sep 2026
4 h 2 m
Direct flight
DL
$ 167

Boston — San Juan

08:55—12:57
10 Sep 2026
4 h 2 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Boston — San Juan flight

Looking for cheap flights from Boston to San Juan? Compare fares from different airlines, check the flight schedule and travel time — and book your Boston — San Juan ticket online at the best price.

The route has direct flights — around 68 flights per week, flights are operated by JetBlue, Delta, Spirit Airlines, Frontier Airlines and 1 more airline, a nonstop flight takes about 4 h, the distance between the cities is around 2,696 km.

Planning your trip? You may find our San Juan travel guide, how to get from the airport into town and San Juan weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $96Min. price
OctoberCheapest
AugustPeak season
YesDirect flights
2,696 kmDistance
4 hTravel time
5Airlines
68 / wkFlights

Flight schedule from Boston to San Juan

The table shows direct flights from Boston to San Juan on the selected date. The flight takes approximately 4 h. Regular flights are operated by JetBlue, Delta, Spirit Airlines and Frontier Airlines. Departures from Logan International Airport airports, arrivals at Luis Muñoz Marín International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 15 Aug 2026

Flight ticket prices by day: Boston — San Juan

Below is a calendar of the lowest flight ticket prices for Boston — San Juan by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $96 in October, and the most expensive are around $200 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Boston to San Juan by month. Tickets are usually cheapest in May (around $161) and priciest in June (about $218) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$171lowMay$161lowSep$166low
Feb$180mediumJun$218highOct$171low
Mar$209highJul$213highNov$185medium
Apr$199highAug$194mediumDec$209high

Some values are estimated based on seasonality.

When to fly

Weather in San Juan: it is warmest in August (up to 30 °C on average) and coolest in February (around 27 °C). The driest month is January.

Tickets are usually cheapest in October and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · San Juan

Dry and wet days · San Juan

Wind speed and direction · San Juan

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How to get the best deal on a Boston — San Juan ticket

  • Book ahead: fares for Boston — San Juan are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to San Juan is usually October — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Boston — San Juan route are operated by 5 airlines; JetBlue runs the most flights (around 68% of all flights). Compare carriers, flight shares and schedules below.

  • JetBlueB6
    15x/week
    WebsiteFleet: 30742.5M pax/year
    • Direct flight BOS → SJU15x/week
      Duration
      4h 1m
      Days
      MTWTFSS
    67.6%Open →
  • DeltaDL
    4x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight BOS → SJU4x/week
      Duration
      4h 7m
      Days
      MTWTFSS
    17.6%Open →
  • Spirit AirlinesNK
    2x/week
    WebsiteFleet: 20544.1M pax/year
    • Direct flight BOS → SJU2x/week
      Duration
      3h 54m
      Days
      MTWTFSS
    8.8%Open →
  • Frontier AirlinesF9
    1x/week
    WebsiteFleet: 15329M pax/year
    • Direct flight BOS → SJU1x/week
    4.4%Open →
  • Aer LingusEI
    1x/week
    WebsiteFleet: 5710.7M pax/year
    • Direct flight BOS → SJU1x/week
    1.5%Open →

Cities and airports on the Boston — San Juan route

Flights Boston — San Juan depart from Logan International Airport and arrive at Luis Muñoz Marín International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Boston

BOS
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

San Juan

SJU
Puerto Rico
About the cityHow to get thereWeatherAll about the country Puerto Rico
Departure airports
Arrival airports

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Frequently asked questions about the Boston — San Juan flight

How long is the flight from Boston to San Juan?

A nonstop Boston — San Juan flight takes about 4 h — the distance between the cities is around 2,696 km.

How far is it from Boston to San Juan?

The distance from Boston to San Juan is about 2,696 km, which a nonstop flight covers in around 4 h.

Are there direct flights from Boston to San Juan?

Yes, there are nonstop flights Boston — San Juan — around 68 flights per week.

Which airlines fly from Boston to San Juan?

Airlines operating Boston — San Juan include JetBlue, Delta, Spirit Airlines, Frontier Airlines, Aer Lingus. See the full list with schedules in the "Airlines" section on this page.

Which airports do Boston — San Juan flights use?

Flights from Boston depart from Logan International Airport, and arrive at Luis Muñoz Marín International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Boston to San Juan?

The price of a Boston — San Juan ticket depends on your travel date, season and demand: it is usually cheapest to fly in October, and most expensive in August. Tickets typically cost between $96 and $200. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Boston — San Juan?

Flights Boston — San Juan are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is October. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Boston to San Juan?

To catch a low fare Boston — San Juan, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually October.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Boston

See all
New York CityWashington, D.C.ChicagoTorontoSan FranciscoAtlantaSeattleLos AngelesPhiladelphiaNantucketLondonDallasOrlandoDenverFort LauderdaleDetroitCharlotteRaleighMontrealNashvilleMarthas VineyardMiamiMinneapolisSan DiegoBuffaloPhoenixMadridTampaPittsburghClevelandBarcelonaIndianapolisDublinHoustonParisLas VegasAustinRichmondCincinnatiAmsterdam

Where else you can fly from San Juan

See all
OrlandoNew York CityFort LauderdalePhiladelphiaMiamiSanto DomingoPunta CanaAtlantaDallasCharlotte AmalieChicagoHoustonTampaWashington, D.C.TortolaPanama CityHartfordMadridMedellínGustaviaCharlotteBogotaSaint CroixJacksonvilleMexico CityViequesSan AntonioDetroitRaleighTorontoDominicaClevelandVirgin GordaSan JoséCulebraSantiagoProvidenceMinneapolisMontrealThe Valley

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