Cheap flight from Boston to San Juan from $51
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Cheap flight deals from Boston to San Juan
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Tue, May 6 | Frontier Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Tue, May 13 | Frontier Airlines$126 $45572% OFF72% OFF$455 $126 -
BOS 7:52 PM4hNonstopSJU 11:52 PMBoston - San Juan | Tue, May 6 | Spirit Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Tue, May 13 | Frontier Airlines$142 $45569% OFF69% OFF$455 $142 -
BOS 3:00 PM4h 5mNonstopSJU 7:05 PMBoston - San Juan | Sun, May 4 | Jetblue Airways
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Thu, May 8 | Frontier Airlines$152 $45567% OFF67% OFF$455 $152 -
BOS 7:52 PM4hNonstopSJU 11:52 PMBoston - San Juan | Sat, May 3 | Spirit Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Sun, May 11 | Frontier Airlines$15466% OFF$455 $154
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BOS 8:10 AM4h 2mNonstopSJU 12:12 PMBoston - San Juan | Tue, May 6 | Delta Air Lines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Tue, May 13 | Frontier Airlines$15466% OFF$455 $154 -
BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Sun, May 11 | Frontier Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Thu, May 15 | Frontier Airlines$25744% OFF$455 $257
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BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Sun, May 4 | Frontier Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Thu, May 8 | Frontier Airlines$32030% OFF$455 $320
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BOS 9:20 PM4hNonstopSJU 1:20 AMBoston - San Juan | Thu, May 8 | Jetblue Airways
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Thu, May 15 | Frontier Airlines$37817% OFF$455 $378
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BOS 10:04 AM8h 43m1 stopsSJU 6:47 PMBoston - San Juan | Thu, May 8 | Frontier Airlines
SJU 6:30 AM4h 13mNonstopBOS 10:43 AMSan Juan - Boston | Thu, May 15 | Frontier Airlines$10876% OFF$455 $108
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BOS 6:10 AM12h 57m1 stopsSJU 7:07 PMBoston - San Juan | Thu, May 29 | Spirit Airlines
SJU 1:39 PM9h 17m1 stopsBOS 10:56 PMSan Juan - Boston | Wed, Jun 4 | Spirit Airlines$13770% OFF$455 $137
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BOS 1:00 PM17h 25m1 stopsSJU Invalid DateBoston - San Juan | Mon, May 5 | Normal Airline
SJU 3:00 PM6hNonstopBOS 4:00 PMSan Juan - Boston | Wed, May 7 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Tue, May 6 | Frontier Airlines$51 $24779% OFF79% OFF$247 $51
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BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Sun, May 11 | Frontier Airlines$61 $24775% OFF75% OFF$247 $61
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BOS 7:52 PM4hNonstopSJU 11:52 PMBoston - San Juan | Tue, May 6 | Spirit Airlines$116 $24753% OFF53% OFF$247 $116
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BOS 7:52 PM4hNonstopSJU 11:52 PMBoston - San Juan | Mon, May 5 | Spirit Airlines$11852% OFF$247 $118
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BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Thu, May 15 | Frontier Airlines$18525% OFF$247 $185
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BOS 11:43 AM4h 1mNonstopSJU 3:44 PMBoston - San Juan | Sun, May 4 | Frontier Airlines$18625% OFF$247 $186
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BOS 8:10 AM4h 2mNonstopSJU 12:12 PMBoston - San Juan | Mon, May 5 | Delta Air Lines$20517% OFF$247 $205
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BOS 10:04 AM8h 43m1 stopsSJU 6:47 PMBoston - San Juan | Thu, May 8 | Frontier Airlines$6076% OFF$247 $60
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BOS 6:00 AM13h 29m1 stopsSJU 7:29 PMBoston - San Juan | Sat, May 17 | Frontier Airlines$6175% OFF$247 $61
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BOS 6:00 AM20h 51m1 stopsSJU 2:51 AMBoston - San Juan | Wed, May 7 | Frontier Airlines$6773% OFF$247 $67
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BOS 1:00 PM17h 25m1 stopsSJU Invalid DateBoston - San Juan | Mon, May 5 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Frequently Asked Questions
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When are flight tickets from Boston (BOS) to San Juan (SJU) the cheapest?
Airlines adjust prices for flights from Boston to San Juan based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Boston (BOS) to San Juan (SJU) cost?
According to Trip.com's data, the lowest price is around $331. -
How long does it take to fly from Boston (BOS) to San Juan (SJU) and what is the distance?
It takes around 4 hours 2 minutes to fly from Boston (BOS) to San Juan (SJU). -
What are the most popular airlines that fly from Boston (BOS) to San Juan (SJU)?
Airlines with flights from Boston (BOS) to San Juan (SJU): Etihad Airways, Frontier Airlines, Hawaiian Airlines, Jetblue Airways, Icelandair, Delta Air Lines, El Al, Spirit Airlines and TAP Air Portugal.
How to find a cheap flight from Boston to San Juan
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to San Juan. Book your flights at the right time and save more.
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Check One-way Fares
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Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
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Flight Info | Boston to San Juan
| Cheapest one-way flight price | $51 |
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| Cheapest round-trip ticket price | $108 |
| Off-season for travel | March |
| Peak season for travel | June |
| Flight distance | 2,701.02 km |
| Average flight time | 4 hours 2 minutes |
| Popular airline | United Airlines |