Guide
How often does your Airbnb calendar actually sync?
Listing Watchdog · Updated July 4, 2026
Short answer: about every 3 hours for the calendars Airbnb imports from you. Not real time, not on demand. Every other channel runs on its own clock, and the gap between those clocks is the window a double booking slips through. Here is the real refresh rate for each platform, and why the number that matters is the slowest one in your chain.
| Platform | Imported calendar refresh | Manual refresh? |
|---|---|---|
| Airbnb | About every 3 hoursAirbnb's own help center states it auto-updates connected calendars roughly every 3 hours. | Yes (rate-limited) |
| Vrbo | Every 30 minutesVrbo documents a 30-minute import cycle, the fastest of the major channels. | Yes (refresh icon) |
| Booking.com | Not publishedBooking.com gives no fixed interval; its help text says changes take a few minutes to several hours. | Yes (Import button) |
| Google Calendar | Up to 12–24 hoursSubscribed ICS feeds refresh slowly and cannot be forced. A risky link to route bookings through. | No |
Figures from each platform’s own documentation where published. Booking.com and Google do not commit to a fixed interval.
Why none of it is real time
iCal sync is a pull, not a push. When a guest books, nothing reaches out to your other channels. Instead each platform downloads the other’s calendar file on its own schedule and reads what changed. Two clocks have to line up: the channel that took the booking has to regenerate its exported feed, and the other channel has to poll and re-import it. The importing side is usually the bottleneck, which is why Airbnb’s roughly 3-hour cycle sets your exposure even though Vrbo pulls every 30 minutes.
The blind window
The blind window is the stretch where one channel has sold a night and another has not imported the block yet. For a single hop it is roughly the importing platform’s interval: a booking elsewhere is invisible to Airbnb for up to about 3 hours, to Vrbo for up to 30 minutes. Route a calendar through Google Calendar in the middle and the window balloons to a day, because Google refreshes subscribed feeds slowly and gives you no way to force it. Chained hops stack, so the slowest link dominates the whole path.
Where double bookings come from
Inside the blind window the un-refreshed channel still shows the night as open, so it will accept a second booking for a date already taken. Instant Book and last-minute reservations are the danger zone: the shorter the lead time, the better the odds a second guest confirms before the sync catches up. Nothing about the refresh interval changes that; the only real defense is catching the mismatch while it is still just a gap on a calendar.
Does a manual refresh help?
Airbnb, Vrbo, and Booking.com all let you force a refresh, and Google does not. But a manual pull only grabs what the other feed already shows, so it closes the gap only if the exporting side has updated and you happen to click during the risky window. To actually prevent overlaps this way you would have to sit and refresh every platform constantly. That is the job worth handing off.
Free check
Skip the guessing: compare your calendars right now
Instead of wondering whether the last sync ran, paste the export URL from each channel for one property. This lines them up and flags every night booked on one but still open on another. No signup, and it never touches guest details.
Refresh rates change; the gap does not
Whatever interval each platform runs today, there is always a window where your channels disagree, and a broken link can widen it to forever without a warning. Continuous monitoring re-checks every channel around the clock and messages you the minute a gap opens or a feed goes dark, in the window the channels are still blind.
Questions hosts ask
How often does Airbnb update its calendar?
Airbnb re-imports the calendars you have connected about every 3 hours, per its help center. It also shows a last-updated timestamp per connected feed, and you can trigger a manual refresh, though that is rate-limited if you do it too often.
Why is Airbnb slower than Vrbo?
Each platform chooses its own polling schedule for the feeds it imports. Vrbo documents a 30-minute cycle while Airbnb runs roughly every 3 hours. Because iCal is a pull, not a push, the slower importer sets how long a booking can stay invisible to it.
Does a manual refresh prevent double bookings?
Only partly. A manual refresh pulls whatever the other feed currently shows, so it helps only if the exporting side has already updated and you happen to click during the risky window. It is a reactive fix, not protection, since you would have to refresh every platform constantly.
What is the safest sync interval to rely on?
None of them are safe on their own, because all of them leave a gap. The reliable approach is to keep comparing your calendars against each other so you catch a night that is booked on one channel but still open on another, whatever each platform's refresh rate happens to be.
Already seeing a mismatch? Airbnb not syncing with Vrbo or with Booking.com walks through the fix, or run the full cross-channel check.