These fees vary by airline. You can check whether the baggage included in a ticket if you go to the airline website → Manage booking (or Your trip), the name varies from airline to airline → enter your Trip by providing booking details. There you can check your baggage rules.
If you purchased the flight inside our app (when provided address, etc), you can check the details at the Flight Order widget. See the next screens:
1. Open Flight Feed and expand Flight order widget
2. Tap on Confirmation to check the purchased details
3. Explore your purchased tickets
4. Scroll down to get direct links to manage booking and FAQ of the airline