$106 Cheap United flights Boston (BOS) to San Juan (SJU)

View $106 flight on Tue, Mar 10, 2026Opens in a new window

$106 Cheap United flights Boston (BOS) to San Juan (SJU)

Prices were available within the past 7 days and start at $106 for one-way flights and $223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Mar 9 - Thu, Mar 26
BOS
Boston
SJU
San Juan
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select United flight, departing Mon, Mar 9 from Boston to San Juan, returning Thu, Mar 26, priced at $223 found 3 days ago
United
Mon, Mar 9 - Thu, Mar 26
BOS
Boston
SJU
San Juan
$245 Roundtrip, found 3 days ago
$245
Roundtrip
found 3 days ago
Select United flight, departing Mon, Mar 9 from Boston to San Juan, returning Thu, Mar 26, priced at $245 found 3 days ago

Find the cheapest month to fly from Boston (BOS) to San Juan (SJU)

February is typically the cheapest month to fly

From $106 - $379 per traveler.

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $488
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $488
Flights from Boston (BOS) to San Juan (SJU)
Origin airport
Logan Intl.
Destination airport
Luis Munoz Marin Intl.
Distance
2686 km
Average flight time
5 hours 2 mins