SJU - BOS

$169 Find Cheap Flights from San Juan to Boston - Compare and Save

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Everything you should know

Cheapest round-trip
$300
Typical prices: $259-$428
Frontier
Fri 12/28Tue 1/9
SJU - BOS • 1 stop
Cheapest non-stop
$300
Typical prices: $259-$435
JetBlue
Sat 12/22Thu 1/4
SJU - BOS • Non-stop
Nonstop flights
You can fly direct with JetBlue, Delta and Frontier. Average duration is 4h 17m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $268 (round-trip)
Shortest trip • 6h 50m (one-way)
Insights
Insights
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We hope you love your trip to Boston!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Juan to Boston (SJU-BOS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to Boston

Mon, Dec 28 - Sat, Jan 9
Frontier Logo
10:51 pm - 9:30 amSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
11h 39m1 stop Orlando
Frontier Logo
11:08 am - 4:13 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 05mnonstop
$300Frontier
Fri, Dec 18 - Sun, Dec 20
Frontier Logo
6:11 am - 9:30 amSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 19mnonstop
Frontier Logo
10:25 am - 2:28 amBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
15h 03m1 stop Orlando
$300Frontier
Tue, Dec 22 - Mon, Jan 4
JetBlue Logo
5:05 pm - 8:22 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 17mnonstop
JetBlue Logo
2:15 pm - 7:21 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 06mnonstop
$300JetBlue
Wed, Dec 23 - Mon, Jan 4
JetBlue Logo
8:35 pm - 11:49 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 14mnonstop
JetBlue Logo
6:52 pm - 11:59 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 07mnonstop
$300JetBlue
Wed, Dec 23 - Mon, Jan 4
Frontier Logo
6:11 am - 9:30 amSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 19mnonstop
Frontier Logo
8:28 am - 11:44 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
14h 16m1 stop Atlanta Hartsfield-Jackson
$300Frontier
Thu, Dec 24 - Mon, Jan 4
JetBlue Logo
8:35 pm - 11:49 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 14mnonstop
JetBlue Logo
2:15 pm - 7:21 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 06mnonstop
$300JetBlue
Fri, Feb 5 - Mon, Feb 8
Delta Logo
2:30 pm - 5:52 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 22mnonstop
Delta Logo
8:06 am - 1:16 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 10mnonstop
$301Delta
Fri, Dec 4 - Mon, Dec 7
Delta Logo
2:53 pm - 6:15 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
4h 22mnonstop
Delta Logo
8:35 am - 1:42 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
4h 07mnonstop
$301Delta
Fri, Dec 11 - Sun, Jan 17
Multiple Airlines Logo
5:01 am - 10:13 amSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
30h 12m2 stops Atlanta Hartsfield-Jackson Orlando
Multiple Airlines Logo
10:29 am - 12:37 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
25h 08m1 stop Fort Lauderdale
$308Multiple Airlines
Sat, Dec 5 - Mon, Dec 7
United Airlines Logo
8:25 am - 5:55 pmSJU  San Juan Luis Munoz Marin Intl-BOS Boston Logan Intl
10h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
9:30 am - 9:24 pmBOS  Boston Logan Intl-SJU San Juan Luis Munoz Marin Intl
10h 54m1 stop Houston George Bush Intcntl
$310United Airlines
Booking Insights

Price, demand and travel trends for San Juan Luis Munoz Marin Intl Airport to Boston flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to Boston?

Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Boston typically range from $259 to $428. The lowest price found in the past 5 days was $300, on Frontier.

What's the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to Boston?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to Boston. It’s 7% cheaper than the average day, while Sunday is the most expensive, with prices 28% higher.

What’s the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Boston?

•February is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Boston at $240 round-trip.
•July ($445) and June ($412) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 85% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from San Juan Luis Munoz Marin Intl Airport to Boston the cheapest?

Flights from San Juan Luis Munoz Marin Intl Airport to Boston are cheapest 7 weeks before departure. Booking in this window typically costs about 25% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from San Juan to Boston

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta and Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Key details for San Juan Luis Munoz Marin Intl Airport to Boston flights

Low season

March

Cheapest flight

$169
Beat the crowds with an average 20% drop in travelers.
The most popular month to fly with an average 31% increase in travelers.
One-way flight from San Juan Luis Munoz Marin Intl Airport to Boston

When to book flights from San Juan to Boston

Are your dates flexible? Find out the best times to travel from San Juan to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your San Juan Luis Munoz Marin Intl Airport to Boston flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    These are the earliest and latest flight times available from San Juan Luis Munoz Marin Intl Airport to Boston:

    • Earliest: departs at 5:01 am and lands at 9:18 am
    • Latest: departs at 8:45 pm and lands at 1:02 am.

    The flight takes about 4h 17m.

  • What cabin classes can I book on flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    Three cabin classes are available on flights from San Juan Luis Munoz Marin Intl Airport to Boston:

    • Economy Class
    • Premium Economy Class
    • First Class

  • How long is a flight from San Juan Luis Munoz Marin Intl Airport to Boston?

    A nonstop flight from San Juan Luis Munoz Marin Intl Airport to Boston takes 4h 17m, covering 1,678 miles.

  • Do I need a passport to fly from San Juan Luis Munoz Marin Intl Airport to Boston?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a San Juan Luis Munoz Marin Intl Airport to Boston flight?

    Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Boston range from $259 to $428, with an average of $330 over the past 12 months. Anything below $259 counts as a good deal.

  • How expensive are last-minute San Juan Luis Munoz Marin Intl Airport to Boston flights?

    Last-minute fares on this route (booked within two weeks of departure) run 15% above the $330 route average. Book 7 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from San Juan Luis Munoz Marin Intl Airport to Boston?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $268 round-trip via Fort Lauderdale (FLL), compared to $331 for nonstop.

  • How does on-time performance compare across airlines flying from San Juan Luis Munoz Marin Intl Airport to Boston?

    Delta is slightly above the route average for timely arrivals, while Frontier has a lower on-time arrival rate. On-time arrival rates on San Juan Luis Munoz Marin Intl Airport to Boston flights are:

    • Delta: 87% on time
    • Frontier: 85% on time
    • JetBlue: 77% on time

    Overall, flights on this route are punctual 79% of the time on average.

  • What is the standard checked-bag allowance on flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    The Airbus A321neo family is used most often on this route, operated mainly by Delta and Frontier. Other aircraft seen on the route include Airbus A321 (sharklets) variants.

  • How are flight departures from San Juan Luis Munoz Marin Intl Airport to Boston spread across the day?

    Afternoon is the busiest departure period on San Juan Luis Munoz Marin Intl Airport to Boston flights, with 50% of flights leaving in that window. Morning departures account for 25%, evening flights for 25%, and night flights for 0%.

  • Have flight prices from San Juan Luis Munoz Marin Intl Airport to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $300 to $1,288. That means the highest observed fare was about 4x higher than the lowest one.

  • Which airlines offer Wi-Fi on San Juan Luis Munoz Marin Intl Airport to Boston flights?

    Delta is the only airline on the San Juan Luis Munoz Marin Intl Airport to Boston route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from San Juan Luis Munoz Marin Intl Airport to Boston looking right now?

    One-way fares from San Juan Luis Munoz Marin Intl Airport to Boston are currently lower than usual. Average one-way flight prices are about $180, which is 19% below the typical average for this route.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates averaging $77 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • Which airports can I use when flying from San Juan Luis Munoz Marin Intl Airport to Boston?

    Flights from San Juan Luis Munoz Marin Intl Airport to Boston usually depart from San Juan Luis Munoz Marin Intl (SJU) and arrive at Boston Logan Intl (BOS).

  • What time of day has the fewest delays on flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    Morning flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from San Juan Luis Munoz Marin Intl Airport to Boston?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the San Juan Luis Munoz Marin Intl Airport to Boston route, 21% of flights were delayed in the past 3 months, with delays averaging 2h 23m.

  • Which airports do connecting flights from San Juan Luis Munoz Marin Intl Airport to Boston pass through?

    One-stop flights from San Juan Luis Munoz Marin Intl Airport to Boston most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 27% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 27% of one-stop connections
    • Orlando (MCO) - 19% of one-stop connections
    • Philadelphia (PHL) - 13% of one-stop connections

  • Can I save money by using flexible dates for flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    Yes. Flexible dates can save you up to 28% on flights from San Juan Luis Munoz Marin Intl Airport to Boston. Thursday is the cheapest departure day at $307 round-trip on average, while Sunday is the most expensive at $424, a difference of $117.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from San Juan Luis Munoz Marin Intl Airport to Boston?

    3 airlines operate flights between San Juan Luis Munoz Marin Intl Airport and Boston. The airlines offering nonstop flights on this route include:

    • JetBlue
    • Delta
    • Frontier

  • How much time can I save by choosing a different layover airport from San Juan Luis Munoz Marin Intl Airport to Boston?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 6h 50m, compared with 6h 52m via Baltimore/Washington (BWI) and 6h 57m via New York John F Kennedy Intl (JFK).

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are TD Garden, Fenway Park and Boston Common. These are among the most viewed places in Boston on KAYAK.

  • Which airlines offer extra legroom and free seat selection on San Juan Luis Munoz Marin Intl Airport to Boston flights?

    Among airlines operating San Juan Luis Munoz Marin Intl Airport to Boston flights:

    • JetBlue: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection
    • Frontier: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on San Juan Luis Munoz Marin Intl Airport to Boston flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • JetBlue: a cabin bag and a checked bag in Economy Class
    • Delta: a cabin bag and a checked bag in Economy Class
    • Frontier: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking San Juan Luis Munoz Marin Intl Airport to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Sunday. On this route, Thursday flights average $307, about $117 less than Sunday fares (28% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 25% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Juan Luis Munoz Marin Intl Airport to Boston trip for February. Fares historically average $240 round-trip in that month - typically $205 less than the most expensive month, which is July (based on the last 12 months).
  • For the best chance of arriving on time, fly with Delta. Over the past three months, 87% of Delta flights from San Juan Luis Munoz Marin Intl Airport to Boston arrived on time, slightly above the route average of 79%. When flights on this route arrive late, they're delayed by an average of 2h 23m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Fort Lauderdale Airport (FLL) can be cheaper than flying direct. The cheapest layover option averages $268 round-trip on this route - about $63 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.

    • Hyatt Regency Boston Harbor
    • Hilton Garden Inn Boston Logan Airport
    • Hilton Boston Logan Airport

Prefer to fly direct from San Juan to Boston?

 
Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

San Juan Luis Munoz Marin Intl to Boston Logan Intl

Monday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue

Delta,JetBlue

Sunday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

See more direct flights

Direct returns

Boston Logan Intl to San Juan Luis Munoz Marin Intl

Monday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue

Delta,JetBlue

Sunday

Delta,JetBlue,Frontier

Delta,JetBlue, +1 more

See more direct flights

More options for your flight from San Juan to Boston

Complete your trip to Boston with a hotel stay or car rental