Columbus Airport Authority (CMH) Appointment Data

We've been tracking appointment availability at Columbus Airport Authority (CMH) to help you time your search. The highlights below update automatically as new data comes in.

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Tuesday was the most popular day that new appointments were released.

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3pm was the most popular time that new appointments were released.

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Over the last 7 days, you would have had to check 1000 times for a 95% chance of finding an appointment.

When is the best time to check?

These trends are averaged over the last 4 weeks. Timing your checks to when Columbus Airport Authority (CMH) tends to release new appointments meaningfully improves your odds.

Appointments by day of week

97% of appointments were added on Tuesday!

Appointments by hour

80% of appointments were added between 3pm and 4pm!

Which hour of each day

80% of appointments were added on Tuesday between 3pm and 4pm!

Open appointments over time

The number of open appointments slowly decreases after a new batch is released.

Appointments available vs. total scheduled

The number of appointments available compared to the total number scheduled per day.

What are your odds?

Finding an appointment is hard. We've calculated your odds from our data, along with how far away the average appointment tends to be.

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Chance of a slot under 30 days out

An appointment under 30 days away is available 7% of the time.

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Odds & checks needed

The probability of finding an appointment under 30 days out is 0%.
Over the last 7 days, you would have had to check 1000 times for a 95% chance of finding an appointment!

Probability of finding an appointment over time

Rolling 7-day probability of an appointment under 30 days being available.

Average days until the nearest appointment

The average appointment is 33 days away.

How far away new appointments are when spotted

81% of new appointments are under 30 days away.

Availability by days-out bucket

What may matter more than when appointments are added is when they're actually available.

Recent nearest-appointment changes

The last several times the soonest available appointment changed at Columbus Airport Authority (CMH) — when we spotted it, the new date, and how long it stayed the soonest slot.

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About the data

Added appointment

When the nearest appointment is earlier than the previous nearest appointment, we consider the new appointment to have been added.

Number of appointments added

When a new appointment is added, we count the total number of appointments available on that day. In reality appointments are likely added on subsequent days too, which we don't read — but our count is proportional on average, so the relative trends remain useful.

Probability of finding an appointment

We sum the total time an appointment under 30 days is available within a 7-day window, then divide by 7 days to get the fraction of time a slot is available. We plot the rolling average at the midpoint of the window.

Number of checks needed

The number of checks required for a 95% chance of finding an appointment within 30 days, calculated directly from the probability: log(1 − 0.95) / log(1 − p).

Let us do the checking for you.

We watch Columbus Airport Authority (CMH) around the clock and text you the moment an earlier interview opens — so you don't have to refresh the scheduler yourself.

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