When booking a Grab taxi in the Philippines, you can check if the taxi is marked "Anyway Airport" by the following steps: 1. Download and open the Grab app. 2. Enter your pick-up and drop-off points. 3. Once you have inputted your destination, the app will display a range of options such as GrabCar,GrabTaxi, etc. 4. Look for "GrabTaxi" and under this option, the description "Anyway Airport" should appear if the service is going to or coming from an airport location. Please note that not all Grab services accommodate airport transfer. The availability of "Anyway Airport" taxis depends on the location, traffic situation and time.