Syncing Expedia, Airbnb, and Booking Calendars: The Guide to Avoiding Overbooking

Selling your accommodation on Expedia in addition to Airbnb and Booking.com allows you to attract an international clientele with a high average booking value (particularly from North America). But without precise synchronization, even a single simultaneous booking can lead to a nightmarish double booking: emergency re-accommodation, financial penalties, and a loss of visibility on the platforms.

This operational guide explains how to export and import your iCal links between Expedia Partner Central, Airbnb, and Booking, the actual latency times observed, and best practices for preventing overbooking.

The Pitfall of Syncing iCal with Expedia

The iCal (.ics) protocol is the open standard for exchanging calendar data between booking platforms. However, it operates via periodic polling, not in real time:

• Airbnb checks external iCal feeds approximately every 15 to 60 minutes.
• Booking.com updates its imports every 30 to 60 minutes.
• Expedia Partner Central may take up to 2 to 3 hours to update its calendar via an external iCal link.

During this latency window, a night’s stay sold on Airbnb remains listed as available on Expedia. If a traveler books on Expedia during this time frame, a double booking is mathematically inevitable.

Step-by-Step Guide: Setting Up Expedia's iCal Import/Export

1. Retrieve the iCal link from Expedia

1. Log in to your Expedia Partner Central account.
2. Go to Rates and Availability > Calendar.
3. Click Manage Reservations or Calendar Sync.
4. Select Export Calendar and copy the URL ending in .ics.

2. Import the Expedia calendar into Airbnb and Booking

• On Airbnb: Go to your listing calendar > Availability > Calendar Sync > Import Calendar. Paste the Expedia link and name it “Expedia.”
• On Booking.com: Go to Rates and Availability > Sync Calendars > Add a Calendar Connection. Paste the Expedia URL.

3. Export Airbnb and Booking to Expedia

Next, follow the reverse process: copy the export URL from your Airbnb calendar and paste it into the Import a Calendar section of Expedia Partner Central.

The "master channel" rule for securing data flows

To prevent a chain reaction of desynchronization:

1. Designate a primary channel (usually Airbnb or your central management tool).
2. Never manually update availability on two channels at the same time. Always close the booking on the master channel, then wait for the update to propagate.
3. Link check-in instructions to “Confirmed” status: Send your digital welcome guide only after the reservation has been confirmed to prevent a guest whose stay has been canceled from accessing the smart locks.

When Should You Switch from iCal to a Channel Manager API?

Manual iCal synchronization is suitable as long as you manage 1 or 2 properties with a moderate volume of reservations. As soon as you reach:

• More than 3 properties,
• An active presence on more than 2 channels simultaneously,
• One-night stays with daily turnover,

Using a direct connection via a two-way API (channel manager/PMS such as Guesty, Beds24, Lodgify, or Channex) is becoming essential. Updates are then completed in just a few seconds, eliminating any risk of overbooking.

FAQ

How do I sync my Expedia calendar with Airbnb?

Get the iCal export link from Expedia Partner Central (Rates and Availability), then paste it into the Import a Calendar section on Airbnb. Next, export the Airbnb calendar to Expedia to complete the two-way synchronization.

Why doesn't Expedia update immediately?

iCal connections are not instantaneous. Expedia checks external iCal files on a cycle that can range from 60 minutes to several hours. For instant synchronization within a second, a connection via the channel manager API is required.

What should you do if there’s a duplicate booking on Expedia?

Immediately contact Expedia Partner Central support and the traveler to offer equivalent accommodations nearby or a full refund. Close off those dates on all your other calendars right away to prevent a domino effect.

Does the Majordia Welcome Guide work with Expedia reservations?

Yes. Majordia generates a unique digital welcome booklet link for each property. You can embed it directly into your Expedia Partner Central welcome message templates to send access instructions and promote your additional services.