There is very useful information to share between other travelers such as rate your flight (it will ask you how was your flight after landing) or put an approximate airport waiting time for Check-in at the airport, Passport control, Baggage claim or Customs. Below you will see screenshots with an explanation where to find it.
When the flight has landed you will receive a request in your inbox to rate the flight
To leave a review click on the airline
Then it will take you to the page where you can rate the flight
If you want to see other reviews about an airline go to your Trips → Click on the flight
Find the "Airline" widget
Here you can see other reviews about an airline
Also, if you can click on the "departure" or "arrival airport" widget
You can find information about an estimated time at the "departure airport"
or at the "arrival airport"
For Android, the procedure is the same. First, you should check your inbox to see if there is a new request to rate the flight
Second, you need to choose the flight you want to rate
Then it will take you to the page where you can leave your review
If you want to see the estimated time for a departure/arrival airport,
Please go to your Trips → Select the flight
Find a departure or arrival airport widget
You will see the approximate wait time for Check-in, Passport control, Security or Baggage claim