Cheap flights from San Juan to Boston from $152 SJU → BOS

Found recently, and the cheapest we hold

What have prices looked like?

Over 38 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $271 to $515.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 3-night return fares leaving within 3 days of 1 Jan 2027 to compare.

Every date we hold

3 fares on 3 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $315.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 41 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $118 to $195.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 25 Dec to compare.

Every date we hold

4 fares on 4 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $152.

Return

Fares 14 to 29 days before departure were typically 18% lower than 7 to 13 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (38 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 14 to 29 days before departure were typically 27% lower than 7 to 13 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (41 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from San Juan to Boston?

The cheapest return found recently is $511 with Frontier Airlines, 1 Jan 2027 to 4 Jan 2027, found 2 days ago. The cheapest return we hold, of any age, is $315 with Frontier Airlines, 23 Nov to 26 Nov, found 3 days ago. The cheapest return fare on each of 3 departure dates is usually $409 to $507.

How much is a one-way flight from San Juan to Boston?

The cheapest one-way found recently is $152 with jetBlue, 25 Dec, found 2 days ago. The cheapest one-way fare on each of 4 departure dates is usually $166 to $195.

What is the cheapest month to fly from San Juan to Boston?

November 2026 is the cheapest month for a return, from $315, 23 Nov to 26 Nov, found 3 days ago. December 2026 is the cheapest month for a one-way, from $152, 25 Dec, found 2 days ago.

How far ahead should I book a flight from San Juan to Boston?

In 38 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 18% lower than 7 to 13 days before departure. In 41 days of prices between 24 Sept and 11 Nov, one-way fares 14 to 29 days before departure were typically 27% lower than 7 to 13 days before departure.

Is there a direct flight from San Juan to Boston?

Yes, the cheapest nonstop return found recently is $511 with Frontier Airlines, 1 Jan 2027 to 4 Jan 2027, found 2 days ago. The cheapest nonstop one-way found recently is $152 with jetBlue, 25 Dec, found 2 days ago.

How long is the flight from San Juan to Boston?

The cheapest nonstop one-way found recently, with jetBlue on 25 Dec, takes 4 h 17 min from Luis Munoz Marin International Airport (SJU) to Logan International Airport (BOS).

Which airlines have the cheapest flights from San Juan to Boston?

Between 17 Nov and 1 Jan 2027, Frontier Airlines has the cheapest return on all 3 departure dates we hold. Between 25 Dec and 19 Jan 2027, Frontier Airlines has the cheapest one-way on 3 of the 4 departure dates we hold, and jetBlue on 1.