Guesstimate: sizing daily air traffic on the London-to-Dubai route
Company: Careem
Role: Product Manager
Category: Product / Decision Making
Difficulty: medium
Interview Round: Other
Estimate how many flights go from London to Dubai on a typical day.
```hint Two routes to a number
Decide whether to start from the people who travel the route or from the airlines that fly it, and keep the other angle in reserve as a sanity check.
```
### Clarifying Questions
- Should I count only nonstop passenger flights, or also cargo flights and itineraries with a stop?
- Is it one direction, London to Dubai, or flights in both directions?
- Does London mean all of the city's airports rather than only the largest one?
- Is a typical day an average across the year, or a day in peak season?
### What a Strong Answer Covers
- Scoping the count: passenger versus cargo, nonstop versus connecting, direction, airports and season
- A clear equation in which every assumption is labeled and rounded
- Realistic aircraft size and load factor for a long-haul route, with correct arithmetic
- A sanity check from an independent angle that lands in a similar range
- Recognizing what makes this route unusual, such as Dubai's role as a connecting hub
### Follow-up Questions
- How would your answer change if you counted both directions, or included itineraries with one stop?
- Why can this route support more flights than travel between the two cities alone would suggest?
- How would you turn the flight count into an estimate of daily ride-hailing pickups at Dubai's arrival terminals generated by this route?
Overview: An estimation question asking how many flights operate from London to Dubai on a typical day. It tests scoping the count, building a clear equation from labeled assumptions about travelers, aircraft size and load factor, doing the arithmetic correctly, and sanity-checking the result from a second angle.