BOS → SJU · Puerto Rico

Cheap flights from Boston to San Juan

Live fare found Sep 24 from $200. Typical low $180. Compare 100+ booking sites.

Live fare

$200

Sep 24 — Sep 27
1 stop

Updated September 3 at 3:07 AM· via Travelpayouts partner feed

BOS → SJU price trend · last 30 days · ↑ 1%

$54 low$175 high

Best months for the cheapest fares on this route: Year-round.

JetBlue keeps this BOS-SJU route aggressively priced.

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.

Make it a trip