Frontier’s UpFront Plus seats offer a guaranteed empty middle seat for extra comfort.
Frontier’s Zone 1 boarding is available with a carry-on bag or special fare bundle.
$121+ Cheap flights from Luis Munoz Marin Intl (SJU) to Boston (BOS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Nov 15 — Nov 221
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Luis Munoz Marin Intl to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to Boston Logan Intl are usually found in February or January, booked 43 days in advance, depart on a Saturday or Friday and return on a Monday
Cheap flight deals from Luis Munoz Marin Intl to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $196 (Cheapflightsfares) |
One-way from | $121 (JetBlue) |
Popular in | July |
Cheapest in | February |
Average price | $262 |
Good round-trip deal | $262 or less |
Good one-way deal | $165 or less |
Find flight deals from Luis Munoz Marin Intl to Boston
Cheapest flights from Luis Munoz Marin Intl to BostonExplore the most affordable flight options available from Luis Munoz Marin Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.
Explore the most affordable flight options available from Luis Munoz Marin Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.
This Frontier deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:00 amSJU - BOS
Nonstop4h 23mFrontier
Sat 1/311:06 amBOS - SJU
2 stops14h 33mFrontier
Deal found 10/16![Frontier logo]()
$206
This Priceline deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:19 pmSJU - BOS
Nonstop4h 24mSpirit Airlines
Sun 1/47:48 pmBOS - SJU
Nonstop4h 07mSpirit Airlines
Deal found 10/15![Spirit Airlines logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:55 amSJU - BOS
1 stop12h 58mSpirit Airlines
Sat 12/69:32 pmBOS - SJU
1 stop12h 01mSpirit Airlines
Deal found 10/15![Spirit Airlines logo]()
$216
This Expedia deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:37 pmSJU - BOS
1 stop9h 22mSpirit Airlines
Thu 11/205:45 amBOS - SJU
1 stop13h 42mSpirit Airlines
Deal found 10/15![Spirit Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:37 pmSJU - BOS
1 stop9h 22mMultiple Airlines
Sat 11/156:00 amBOS - SJU
2 stops20h 33mMultiple Airlines
Deal found 10/14![Multiple Airlines logo]()
$222
This Expedia deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:05 amSJU - BOS
1 stop7h 55mJetBlue
Tue 11/117:52 pmBOS - SJU
1 stop6h 56mJetBlue
Deal found 10/16![JetBlue logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:42 amSJU - BOS
2 stops21h 51mMultiple Airlines
Sun 12/79:32 pmBOS - SJU
1 stop12h 01mMultiple Airlines
Deal found 10/16![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:45 pmSJU - BOS
2 stops17h 43mMultiple Airlines
Thu 11/205:45 amBOS - SJU
1 stop13h 42mMultiple Airlines
Deal found 10/15![Multiple Airlines logo]()
$226
This Priceline deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/69:30 amSJU - BOS
1 stop6h 25mJetBlue
Tue 11/113:37 pmBOS - SJU
1 stop11h 11mJetBlue
Deal found 10/15![JetBlue logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/63:37 pmSJU - BOS
1 stop9h 22mSpirit Airlines
Sun 11/166:16 amBOS - SJU
1 stop10h 03mSpirit Airlines
Deal found 10/16![Spirit Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:30 amSJU - BOS
2 stops52h 18mMultiple Airlines
Sun 11/166:16 amBOS - SJU
1 stop10h 03mMultiple Airlines
Deal found 10/16![Multiple Airlines logo]()
$231
This SmartFares deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:31 pmSJU - BOS
1 stop9h 17mJetBlue
Sun 11/26:55 pmBOS - SJU
Nonstop3h 59mJetBlue
Deal found 10/15![JetBlue logo]()
$232
Cheapflights Fare Finder
Customize your flight search to find flights from Luis Munoz Marin Intl to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Boston that are best for you.
Fly from
Luis Munoz Marin Intl
Fly to
Boston
Route
Depart
Return
Price
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sun 11/2
8:10 am-11:23 am
Nonstop4h 13m
Boston Logan Intl
Sun 11/9
7:00 pm-11:59 pm
Nonstop3h 59m
$246
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 11/6
2:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Wed 11/12
8:10 am-1:17 pm
Nonstop4h 07m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 11/7
8:10 pm-11:16 pm
Nonstop4h 06m
Boston Logan Intl
Sun 11/9
7:00 pm-11:59 pm
Nonstop3h 59m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 10/29
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Mon 11/3
8:15 am-1:21 pm
Nonstop4h 06m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Mon 11/3
8:10 am-11:23 am
Nonstop4h 13m
Boston Logan Intl
Sun 11/9
7:00 pm-11:59 pm
Nonstop3h 59m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sat 11/15
6:10 am-9:19 am
Nonstop4h 09m
Boston Logan Intl
Sat 11/22
6:10 am-11:09 am
Nonstop3h 59m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sun 12/21
5:18 pm-8:32 pm
Nonstop4h 14m
Boston Logan Intl
Fri 1/2
8:00 pm-1:05 am
Nonstop4h 05m
$262
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 11/6
12:30 pm-7:50 pm
1 stop8h 20m
Boston Logan Intl
Mon 11/10
7:45 am-6:40 pm
1 stop9h 55m
$266
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 12/24
3:45 am-11:12 am
1 stop8h 27m
Boston Logan Intl
Sat 1/3
8:25 am-1:30 pm
Nonstop4h 05m
$267
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 11/14
12:30 pm-7:50 pm
1 stop8h 20m
$126
Showing 1-10 of 21 results
Compare providers for flights from Luis Munoz Marin Intl to Boston
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Luis Munoz Marin Intl to Boston in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Luis Munoz Marin Intl to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Luis Munoz Marin Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Juan Luis Munoz Marin Intl Airport to Boston
Prices
Airlines
Delays
How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to Boston?
Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Boston. Price data was last updated on October 10, 2025.
Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to Boston?
Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Boston (average of $55). Flying from San Juan Luis Munoz Marin Intl Airport to Boston in July is currently the most expensive (average of $137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SJU to BOS?
Find hourly flight availability from Luis Munoz Marin Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.
When flying from San Juan Luis Munoz Marin Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 14% versus a flight in the morning.
What is the cheapest day to fly from San Juan Luis Munoz Marin Intl Airport to Boston?
Use this chart to determine the cheapest time to fly round-trip from Luis Munoz Marin Intl to Boston. Price data was last updated on October 12, 2025.
Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Juan to Boston delayed?
About 16% of weekly flights between San Juan and Boston have experienced delays in the past year, with the average delay time being 164 minutes.
What is the most punctual flight time for San Juan to Boston flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Juan to Boston flights?
Over the last year, WestJet have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for San Juan Luis Munoz Marin Intl Airport to Boston flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Juan Luis Munoz Marin Intl Airport to Boston trip
Airlines
![Frontier]()
Frontier
![Spirit Airlines]()
Spirit Airlines
Spirit’s Big Front Seats offer 11 inches more legroom and larger tray tables.
Spirit’s Wi-Fi allows streaming; book a plan during ticket purchase for savings.
Airports
Our travel experts
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated October 16, 2025.
Get a feel of what it's like to fly with Delta, JetBlue, and Spirit Airlines from San Juan Luis Munoz Marin Intl Airport to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Entertainment
7.9
Crew
8.5
Food
7.3
Comfort
7.9
Overall
7.9
Reviews
1 / 20
10.0
ExcellentMary,Oct 2025
AMS - PDX
Boarding
8.2
Entertainment
7.9
Crew
8.5
Food
7.3
Comfort
7.9
Overall
7.9
Reviews
1 / 20
10.0
ExcellentMary,Oct 2025
AMS - PDX
Boarding
8.2
Entertainment
7.9
Crew
8.5
Food
7.3
Comfort
7.9
Overall
7.9
Reviews
1 / 20
10.0
ExcellentMary,Oct 2025
AMS - PDX
Boarding
8.2
Entertainment
7.9
Crew
8.5
Food
7.3
Comfort
7.9
Overall
7.9
Reviews
1 / 20
10.0
ExcellentMary,Oct 2025
AMS - PDX
Boarding
8.2
Entertainment
7.9
Crew
8.5
Food
7.3
Comfort
7.9
Overall
7.9
Reviews
1 / 20
10.0
ExcellentMary,Oct 2025
AMS - PDX
Related info for your journey
Find useful and relevant information for your journey from Luis Munoz Marin Intl to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Luis Munoz Marin Intl to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Luis Munoz Marin Intl to Boston
Discover the top 4 airlines that operate flights from Luis Munoz Marin Intl to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$148 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$85 | Average$219 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$140 | Average$284 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$173 | Average$315 | FlexibilityNo cancel fee | On-time62% |