Is a 45 min layover in New York long enough?

JFK · John F Kennedy International · New York, United States
It Depends

A 45 minutes layover at JFK (New York) is tight — it may or may not be enough.

Workable for a same-terminal domestic-domestic connection but risky with any AirTrain transfer.
Concourses
5
Max Transit
35m
Avg. Security
25m
Primary Hub
Delta Air Lines
Domestic → Domestic
60min
Domestic → International
90min
International → Domestic
120min
International → International
120min
AD PLACEMENT — CONTEXTUAL
If connecting from an international flight, budget extra time for the CBP/immigration line, which can run 30-60+ minutes even for US citizens during peak arrival banks.
Check which terminal your next flight departs from as soon as you land — Terminal 4 (Delta/SkyTeam) and Terminal 8 (American/oneworld) are the largest and can have long internal walks.
Use the AirTrain rather than trying to walk between non-adjacent terminals; it's free once inside the airport perimeter.
JetBlue (Terminal 5) and Delta (Terminal 4) connections are generally smoother since both have larger, more efficient rebooking and gate networks.
Build in a buffer for any itinerary requiring an international-to-international connection, since there's no sterile transit and you'll effectively re-enter the airport from scratch.
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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.
The AirTrain JFK light-rail system connects all terminals and runs every few minutes, with a full loop taking about 15-20 minutes depending on stops, but add walking time at each end plus waiting. Terminal 1 and Terminal 4 have an internal walking connector, and Terminal 7/8 are within walking distance, but most passengers should plan on the AirTrain for terminal changes. Any international arrival connecting onward — domestic or international — must exit through CBP, reclaim and recheck bags at the terminal's transfer desk, then clear TSA security again before reaching the gate area.
Is 45 minutes enough for a layover at John F Kennedy International (JFK)?

Workable for a same-terminal domestic-domestic connection but risky with any AirTrain transfer.

What is the minimum connection time at JFK?

Minimum connection times at John F Kennedy International: Domestic-to-Domestic is 60 minutes, International-to-International is 120 minutes. These are the shortest layovers airlines will sell.

Can I make a 45 minutes connection at JFK on an international flight?

45 minutes is below the 120-minute international MCT at John F Kennedy International. You may need to rush and could miss your connection. The AirTrain JFK light-rail system connects all terminals and runs every few minutes, with a full loop taking about 15-20 minutes depending on stops, but add walking time at each end plus waiting. Terminal 1 and Terminal 4 have an internal walking connector, and Terminal 7/8 are within walking distance, but most passengers should plan on the AirTrain for terminal changes. Any international arrival connecting onward — domestic or international — must exit through CBP, reclaim and recheck bags at the terminal's transfer desk, then clear TSA security again before reaching the gate area.

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

We recommend at least 1 hour for a comfortable connection at John F Kennedy International. This gives you enough buffer for security (typically 25 minutes) and transit between terminals (up to 35 minutes).

What happens if I miss my connection at JFK?

Airlines with a hub presence (Delta at T4, JetBlue at T5, American at T8) have dedicated rebooking desks and can often protect you on the next flight quickly; for missed international connections, you'll need to work through the transfer desk after clearing customs, and it may involve a re-issued boarding pass and another security screening.

AD PLACEMENT — BEFORE FOOTER