Layover Calculator

Guide: is my layover long enough?

What it does

It answers the question that gives every connecting traveler a knot in the stomach: "will I actually make my next flight?" You enter how long your layover is and a few facts about the trip — domestic or international, terminal change, bags to re-check, separate tickets — and it compares your layover against a recommended minimum connection time and returns a plain verdict: too tight, OK but cutting it close, or comfortable. It also shows the cushion (or shortfall) in minutes so you can decide whether to rebook. Free, private, no signup.

How to use it

1. Enter your layover — the gap between scheduled arrival and connecting departure.
2. Pick the connection type (domestic/international affects immigration and walking distances).
3. Tick anything that adds time: terminal change, re-checking bags, separate tickets, a big/busy hub.
4. Read the verdict and the cushion in minutes. If it says too tight, look for a longer connection.

Worked example

A 1h 15m layover, domestic → domestic, no terminal change, carry-on only, one ticket:

1. Base recommended minimum for domestic–domestic = 60 min.
2. No extra factors ticked, so recommended minimum stays 60 min.
3. Your layover = 75 min. Cushion = 75 − 60 = +15 min.
4. 15 min over the minimum → verdict: OK, but cutting it close — fine if your inbound is on time, risky if it's late.

Now tick "international → domestic" and "re-check bags": the minimum jumps to 90 + 30 = 120 min, so the same 75-minute layover becomes 45 min short — too tight. Same clock time, very different risk.

How the minimum is built

base by type:  D->D 60   D->I 90   I->D 90   I->I 120  (minutes)
+ change terminals        +20
+ re-collect/re-check bag +30
+ large/busy hub          +20
+ separate tickets        +30  (no airline protection)
recommended = base + extras
cushion     = yourLayover - recommended
verdict:  cushion < 0      -> too tight
          0 <= cushion <30 -> OK, cutting it close
          cushion >= 30    -> comfortable

These are practical planning buffers, not the airport's legal "minimum connection time" (which is usually shorter and assumes everything goes perfectly).

Accuracy & tips

• Buffers are guidance, not a guarantee. A delayed inbound flight can erase any cushion — build in margin.
• Separate tickets are the big risk. If you miss the connection, no airline is obligated to rebook you for free; lean comfortable.
• Boarding closes early. You need to be at the gate ~15–20 min before departure, not at departure time.
• International arrivals = immigration + customs + (often) re-check. Those lines are the usual time-killers.
• Fully client-side — nothing leaves your browser.

Common mistakes this tool prevents

• Trusting a booking site's short "legal" connection time as if it were safe.
• Forgetting that international arrivals mean immigration, customs, and often re-checking bags.
• Booking a tight self-connection on separate tickets with no fallback if you miss it.
• Counting to "departure time" instead of "gate-closes time."

How to embed this tool on your website

No account, no coding. Copy the embed code and paste it where you want it to appear:

<iframe src="https://snaptoolsuite.com/layover-calculator/?embed=1"
  style="width:100%;max-width:560px;height:1100px;border:0;"
  title="Layover Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/layover-calculator/">Layover Calculator</a> by Snap Tool Suite</p>

See it live: view a real embed example →

Frequently asked questions

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