Dubai to Mumbai: what really shapes the DXB-BOM corridor
- Departure
- Dubai International Airport, Dubai, the United Arab Emirates
- Arrival
- Chhatrapati Shivaji Maharaj International Airport, Mumbai, India
- Great-circle distance
- 1,926 km (1,040 nm)
- Typical airborne time
- 2h 44m
- Usual cruise levels
- FL330 to FL390
- Initial track
- eastbound
Route overview
Dubai to Mumbai is a short three-hour flight that is either exceptionally smooth or noticeably bumpy, depending almost entirely on one thing: the Indian monsoon. Outside monsoon season this route is one of the calmest in the world. During monsoon the Mumbai arrival becomes the interesting part.
Why turbulence happens on this route
The DXB-BOM track climbs out of Dubai, crosses the Persian Gulf and the Arabian Sea, and descends into Mumbai. At cruise altitudes of FL350 to FL390 the air is usually dry and stable, especially between October and May. During those months many passengers do not feel a single bump beyond the small motions of takeoff and landing. From June through September the picture changes. The southwest monsoon pumps warm, moist air off the Arabian Sea onto the west coast of India, and huge convective clouds build up along the coastline and inland. Some of these storms reach 45,000 feet or higher, well above cruising altitude. As we descend toward Mumbai during monsoon we often need to deviate around cells using onboard radar, and the last thirty minutes of the flight can include several turns and altitude changes for a smoother path. Occasionally the sea breeze interacts with monsoon flow to create low-level wind shear on final approach into runway 27, which the flight crew is trained to recognize and manage.
Which seasons are bumpiest
June through September is by far the bumpier window because the southwest monsoon is active over Mumbai and much of the western Indian coast. Within monsoon, July usually brings the heaviest and most frequent thunderstorms. October through May the route is very smooth, with December through February being especially quiet. If you can pick your dates and you are a nervous flyer, target the cool, dry months when the arrival into Mumbai is uneventful and the cruise is glassy.
How pilots handle it
On a monsoon-season Dubai to Mumbai flight we in the cockpit study Mumbai's radar picture and the latest terminal forecast before departure. We plan extra fuel so we can hold or deviate without pressure. In cruise the radar comes on early, typically before top of descent, so we can see storm cells 150 miles ahead and choose a path around them. We stay in close contact with Mumbai approach for updates on which arrival is smoothest, and we brief the cabin crew to secure the cabin early. On an Emirates 777 or an Air India A320neo the tools are excellent and the procedures are practiced daily.
What you can do as a passenger
If you are flying during monsoon, expect the last thirty minutes to be the most active part of the flight and prepare accordingly. Keep your seatbelt fastened for the whole flight, not just when the sign is on, because tropical cells can appear on the descent. Sit over the wing if you can, and avoid heavy meals or alcohol before boarding. Outside monsoon this route is short and calm enough that most anxious flyers say it is one of the easier ones they have done. Bring a small distraction and trust the crew.