WP Travel version 4.0.6 is now available for update. This could be taken as an important release as we have optimized the script in the plugin.
In this version, we have added the option in WP Travel > Settings > Debug. Enabling this option will load the bundle script file which reduces the number of requests and thus help you increase the page speed.

Furthermore, we have made some enhancement and bug fixing in the plugin.
Change Log
Enhancements:
- Adds bundled scripts files for optimization, reduces page load time and requests.
- Adds new option to enable/disable load bundled scripts on settings.
Fixes:
- Fixes Group Pax issue on multiple pricings.
If you spot any issue or face any difficulty with the plugin, feel free to write back to us in our official support forum.