Work Out How Much of a Layover Is Actually Free
A layover's headline number is the whole interval between flights, and almost none of it is yours. This budgets it: transfer time on arrival, immigration if you're clearing it, the buffer you need to be back at the gate, and the reboarding cutoff — then returns the minutes you could genuinely spend in the city, and tells you whether going is a good idea. Local only; nothing leaves the tab.
- Budget
- Layover minus the airport's fixed costs, line by line
- local
- What it replaces
- Optimism and a missed connection
- $0.00
- Input
- Layover length plus four facts about the transfer
- no card
- Output
- Usable minutes and a leave-or-stay verdict
- recomputed
What you pay otherwise
| Route | What you get | Cost |
|---|---|---|
| Leaving and missing the flight | A new ticket on a same-day fare | $400+ |
| A rushed taxi round trip | Paid for forty minutes in the city | $70 |
| Assuming the full interval is free | The airport takes most of it | a panic sprint |
| This page | The minutes you actually have | $0 |
The workflow
Enter the layover in minutes, not hours
A 5h40m layover is 340 minutes. The tool budgets in minutes because the deductions are minute-sized — a 20-minute immigration queue is the difference between a viable trip and a sprint.
Be honest about immigration and bags
Clearing passport control on the way out and again on the way back is the single biggest deduction, and collecting a checked bag adds more. Answering 'no' to both when the answer is yes is how this returns a confident wrong verdict.
Add the travel time to where you actually want to go
Each way, by the transport you'd really use. The centre of a city is often 40 minutes from its airport by train and 70 by taxi in traffic — the round trip is the number that matters.
Keep the gate buffer at 60 minutes or more
That's the time you want to be back before boarding closes, not before departure. Below 45 minutes the verdict flips to stay-at-the-gate regardless of how short the trip looks.
Worked example
Sample: 340 min layover, immigration both ways Layover 340 Arrival transfer -35 Immigration out -40 Train each way -80 Immigration back -40 Gate buffer -60 Usable 85 min → GO, CAREFULLY Uploaded nothing — budgeted in the tab
Numbers above are sample data produced by the tool's own pre-loaded example, run in the browser — not averages or measured benchmarks.
What breaks this
Entering the layover in hours treats 6 as six minutes and returns a nonsense budget — use minutes. Forgetting immigration happens twice if you leave the sterile area; the tool adds it both ways only when you say you're clearing it. Treating a GO verdict as permission to go far — it budgets the travel time you entered, so an ambitious destination needs an ambitious number.
Try it now
A 340-minute layover with immigration both ways is loaded and leaves 85 usable minutes. Drop the gate buffer to 40 and watch the verdict change.
Open the layover budget →Go deeper: the printable slip
The time budget is free forever. The $4 one-time tier adds:
- Printable slip — the budget and the back-by time on one card — estimate: ~6 min saved re-checking mid-layover.
- Saved trips shelf — keep up to 8 layovers in this browser — estimate: ~8 min saved per multi-leg trip.
- Back-by alarm line — a copy-ready time to set an alarm for — estimate: ~4 min saved and one missed flight avoided.