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Is a 40 min layover in San Juan long enough?

SJU · Luis Munoz Marin International · San Juan, Puerto Rico
It Depends

A 40 minutes layover at SJU (San Juan) is tight — it may or may not be enough.

Workable only for a same-terminal, no-rescreen domestic connection with no delays.
Quick Stats
Concourses
3
Max Transit
20m
Avg. Security
15m
Primary Hub
JetBlue Airways
Minimum Connection Times
Domestic → Domestic
45min
✗
Domestic → International
60min
✗
International → Domestic
75min
✗
International → International
60min
✗
AD PLACEMENT — CONTEXTUAL
Tips for 40 min Connections
If your connection spans Terminal A and Terminal B/C, budget extra time for the shuttle and a second security screening.
JetBlue's Caribbean 'bank' of departures clusters in the afternoon, so gate areas in Terminal B/C get crowded from roughly 3-6pm.
Flights arriving from foreign countries (like the Dominican Republic or Aruba) require CBP processing at SJU, even if your final leg is domestic within the US.
Terminal A is smaller and has fewer food options, so grab food in B/C if you have time before a same-terminal connection.
PreCheck lanes exist but are limited, so don't assume the shortest line during peak morning or afternoon banks.
Busyness — Connection Risk
12a6a12p6p12a
Low risk
Moderate
High risk
Tight connections are safer outside peak hours. Morning rush (6–9a), midday (11a–2p), and evening (4–8p) are highest risk.
Getting Between Concourses
Terminals B and C are linked airside by a short walkway, so connections between JetBlue and Spirit gates typically involve no re-screening. Moving to or from Terminal A requires exiting security, a landside shuttle bus or walk of several minutes, and a full re-screening on the other side.
Frequently Asked Questions
Is 40 minutes enough for a layover at Luis Munoz Marin International (SJU)?

Workable only for a same-terminal, no-rescreen domestic connection with no delays.

What is the minimum connection time at SJU?

Minimum connection times at Luis Munoz Marin International: Domestic-to-Domestic is 45 minutes, International-to-International is 60 minutes. These are the shortest layovers airlines will sell.

Can I make a 40 minutes connection at SJU on an international flight?

40 minutes is below the 60-minute international MCT at Luis Munoz Marin International. You may need to rush and could miss your connection. Terminals B and C are linked airside by a short walkway, so connections between JetBlue and Spirit gates typically involve no re-screening. Moving to or from Terminal A requires exiting security, a landside shuttle bus or walk of several minutes, and a full re-screening on the other side.

How much time do I need for a layover at SJU?

We recommend at least 1 hour for a comfortable connection at Luis Munoz Marin International. This gives you enough buffer for security (typically 15 minutes) and transit between terminals (up to 20 minutes).

What happens if I miss my connection at SJU?

If you miss a connection, JetBlue, American, and Spirit all have staffed rebooking counters in their respective terminals, and JetBlue in particular runs frequent Caribbean frequencies from SJU so same-day rebooking options are usually available.

Other Layover Durations at SJU
25 min30 min35 min45 min50 min55 min1 hr1¼ hr1½ hr1¾ hr2 hr2½ hr3 hr4 hr
40 min Layovers at Other Airports
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AD PLACEMENT — BEFORE FOOTER