Yes. In Lotus Notes 8.5 and higher, you should be able to use the iCalendar. To get the required Calendar URL, sign in to www.tripcase.com and select the Calendar option from the dropdown menu next to your name, at the top right of the screen. Access the webcal URL. The URL begins with webcal://www.tripcase.com. and ends in .ics. Copy and paste this URL into the Lotus Notes 'Add a Calendar' window.
Additional information on Lotus Notes Daylight Savings Time.