Cheap flights from Boston to San Juan
Live fare found Feb 20 from $242. Typical low $180. Compare 100+ booking sites.
Live fare
$242
Feb 20 — Feb 27
non-stop
non-stop
Updated October 18 at 3:21 AM· via Travelpayouts partner feed
$141 low$210 high
When to fly BOS to San Juan
Best months for the cheapest fares on this route: Year-round.
JetBlue keeps this BOS-SJU route aggressively priced.
How to get the best price on this route
- Book 6–8 weeks ahead for international routes; 3–4 weeks for short-haul.
- Fly midweek (Tue/Wed) — weekend departures cost 15–25% more.
- Compare across 100+ booking sites. Our partner feed surfaces vendors you’ve never heard of that often beat the majors.
- Set a price alert below to be the first to know when the fare drops below $180.
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Make it a trip
Stay in San Juan
Bundle flight + hotel to save another 10–20%. Pricing via Expedia.
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