Istanbul and Dubai are the two most common one-stop airports for Europe-to-Asia flights. Before 2022, the choice was mostly about schedule and preference. Since then, there is a real difference that matters: what happens on the first leg.
The difference is not about the stopover airport itself or the second part of the flight — it is about the flight from Europe. A flight from London or Frankfurt to Istanbul stays mostly west of the active flight warning area. Turkish airspace is not inside the flagged area. A flight from the same city to Dubai goes south through the Middle East, crossing airspace that falls inside active flight warnings.
The airport-to-Asia leg — Istanbul to Bangkok, Dubai to Singapore, and so on — is generally clean for both options. The main airspace difference is on the first leg only.
Istanbul is positioned between Europe and Asia in a way that lets flights from London or Frankfurt head east without crossing the Gulf warning area. The airspace between Western Europe and Turkey has no active flight warnings applied to it.
This means the Istanbul route avoids the warning area on both parts of the flight for most European departures. Both the Europe-to-Istanbul leg and the Istanbul-to-Asia leg stay clear of the warning area — that is why it scores higher.
A lower score does not make Dubai a bad choice. Emirates flies more often than any other airline on most Europe-to-Asia routes — four or more daily flights from London alone, with strong connections across Southeast Asia. More flights means more options to switch if something goes wrong.
Dubai airport has stayed operational and reliable throughout the current advisory period. If schedule flexibility, airline preference, or frequent flyer points matter most to you, the fact that the first leg crosses a warning area may be a trade-off you choose to accept — just make it a deliberate choice, not an accidental one.
These trips have both Istanbul and Dubai options scored and compared, so you can see the difference directly.