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Minimum Connection Time calculateur

A 90-minute connection at JFK from an international arrival to a domestic departure — across terminals — is a risky sprint: the realistic 2026 band is 90-120 min for immigration, customs and bag recheck (midpoint 105), the AirTrain terminal move adds about 25 min, so you want ~130 min and you are 40 min short. Even the same-terminal version needs ~105 min. On one ticket the airline rebooks you free; on separate tickets you are stranded — a same-day rebooking typically costs $200-$600.

Your connection — JFK, international → domestic, terminal change
90 min
Realistic band for this flow (immigration + customs + recheck)
90-120 min
Terminal change via AirTrain (T1→T8 class)
+25 min
Same-terminal version
~105 min
Recommended minimum for this scenario
~130 min
Your margin
-40 min
Stranded on separate tickets — same-day rebooking
$200-$600
Verdict
90 min = Risky sprint

Entrées

Which airport is the connection at?

America's slowest mega-hub for connections: terminals are not walkable, so T1→T8 means the AirTrain (15-25 min) plus re-clearing security — 60 min domestic, 90-120 international.

How does your first flight arrive?

International → domestic — The slow lane: immigration queues, customs with all your bags, then a bag recheck before you are airside again — bands run 75-120 min. Global Entry kiosks only help members; most visitors should budget the top of the band.

And what type is your next flight?
Does the connection stay in the same terminal?

Same-terminal vs terminal change is the biggest hidden variable: moving terminals adds 20-40 min (modeled 25). JFK T1→T8 = AirTrain 15-25 min then re-clear security; LAX = the cross-terminal T-bus between nine un-walkable terminals; ORD T1↔T5 = the ATS train. Staying put is a 5-15 min walk.

Connection length: 90 min

JFK band for this flow: 90-120 min (door-to-door walking reality, not the ticketing MCT)

Bags & timing

Checked bags: On domestic arrivals with checked bags, airline bag-transfer cutoffs close about 10 min before the aircraft door — add it as buffer even though on one ticket you never see the bags. International arrivals already have the recheck baked into their band, so this adds nothing there. Peak: Holiday and summer-peak queues add 10-20 min at security, immigration and the jet bridge; the days around Thanksgiving and December 20 - January 2 run at the top of that band.

Default scenario: JFK · international → domestic · different terminal · 90 min · checked bags — edit inputs
Recommended minimum for this connection · 2026 reality bands
~130 min
Risky sprint
Formula: JFK International → domestic band 90-120 (mid 105) + terminal +25 + peak +0 + bags +0 → ~130 min. You have 90 → margin -40 min.
Your current connection length
90 min
Recommended minimum — JFK International → domestic ★
~130 min
JFK band for this flow
90-120 min
Terminal-change adder
+25 min
Peak / holiday adder
+0 min
Checked-bag buffer (domestic arrival)
+0 min
Same-terminal version would need
~105 min
Your margin vs recommended
-40 min
Connection verdict

You are 40 min short of the ~130 min this scenario realistically needs. Even a small inbound delay turns this into a sprint — and sprinting through immigration is not a thing. On one ticket the airline rebooks you; on two tickets, see the warning below.

Book one ticket and budget the band — 45 min works at Atlanta, never at JFK international.

Tip: the terminal change is the real trap

Same-terminal vs terminal change is the biggest hidden variable: moving terminals adds 20-40 min (modeled 25). JFK T1→T8 = AirTrain 15-25 min then re-clear security; LAX = the cross-terminal T-bus between nine un-walkable terminals; ORD T1↔T5 = the ATS train. Staying put is a 5-15 min walk.

Rights warning: one ticket or two?

One ticket = the airline owns the risk: if you misconnect, it must rebook you on the next available flight at no charge, forward your bags, and on long overnight delays usually cover meals and a hotel.

Separate tickets = you own the risk: the second airline owes you nothing — no rebooking duty, no refund — and a same-day walk-up fare typically runs $200-600.

≈ 1,500 SAR (pegged rate)
Bands are realistic 2026 planning ranges from published schedules and terminal maps — not guarantees, and gate or delay dependent: airlines' legal ticketing MCTs are often shorter than reality. $200-$600 is an estimated same-day rebooking cost on separate tickets.
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FAQ

Is a 45-minute connection at Atlanta (ATL) actually doable?

Yes — on a single ticket, staying domestic. ATL is one terminal with two concourses joined by the Plane Train (2-3 min rides), and its realistic domestic-to-domestic band is 35-45 min, so 45 is inside it. Where 45 minutes breaks: an international arrival (customs plus bag recheck pushes the band to 75-90), checked bags on the last evening bank, or any inbound delay — ATL's summer evening thunderstorms are the East Coast's classic misconnect maker.

Why do international arrivals need so much more connection time?

Three mandatory stops stand between you and your gate: the immigration queue (20-45 min at peak), the customs walk with ALL your bags, then a bag recheck at the transfer desk before you re-clear security to departures — rechecking alone eats 20-30 min. That is why the realistic 2026 band runs 90-120 min at JFK and LAX versus 60 domestic at the same airports, and 75-90 at faster-customs gateways like DFW, Dulles and ATL.

What is the danger of booking two separate tickets?

It deletes every connection protection: on one ticket, a late first flight obliges the airline to rebook you free on the next available seat; on two tickets, the second airline owes you nothing — no rebooking duty, no refund — and a same-day walk-up fare typically runs $200-600. If you must split tickets, leave at least 4 hours between them, and note that low-cost carriers will not interline your bags across the two bookings at all.

What happens if I misconnect on a single ticket?

You become a "misconnect" and the airline must rebook you on the next available flight at no charge — go to the service desk or open the app the moment you land, since priority goes by order. Your bags forward automatically to the new flight, and on a long delay that strands you overnight you can ask for meal vouchers and a hotel under the carrier's policy. What you do not get: cash compensation for the delay itself inside the US — the only real protection is enough margin booked from the start.

Does it matter whether the connection stays in the same terminal?

A lot — it is the biggest hidden variable: a terminal change adds 20-40 min on top of any band. At JFK the terminals are not walkable, so T1→T8 means the AirTrain (15-25 min) plus re-clearing security; at LAX the T-bus shuttles between nine un-walkable terminals; at ORD, T1 to the international T5 means the ATS train. Staying in the same terminal is a 5-15 min walk instead.

Should I add time for peak and holiday travel?

Yes — add 10-20 min on top of the recommended minimum: security, immigration and jet-bridge queues stretch through Thanksgiving week, the ten days between December 20 and January 2, and the summer peak, running the top of every band. One trick works the other way: book the first morning flight for leg one — dawn departures inherit the least cascaded delay, and if you still misconnect there is a whole day of alternates left on the same ticket.

Does Global Entry speed up the connection after an international arrival?

Only for its members: Global Entry kiosks are for pre-approved travelers (mostly US citizens and residents), and most visitors are not among them — do not count on it in your plan. The realistic free alternative is the Mobile Passport Control app for US and Canadian citizens and certain visa categories, which cuts the passport queue considerably — but it does nothing for customs or the bag recheck, so the full 90-120 min band at busy gateways remains the planning baseline.

When do I have to claim and recheck my bags during a connection?

On every international arrival into the US, no exceptions: you claim your bags after immigration and walk them through customs, then — on a single ticket — hand them to the recheck desk right after and continue without them; on separate tickets you recheck them yourself. On a domestic-to-domestic single-ticket connection your bags transfer behind the scenes without you ever seeing them — but after a delay, confirm they made it: the bag-transfer door closes about 10 min before the aircraft door does.

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