The Pacific Ocean, Earth’s largest and deepest body of water, covers a third of the planet’s surface with an average depth of 13,000 feet. While it may seem like a vast stretch of blue skies, airlines tend to avoid flying directly over it. Here’s why:
1. Excessive Fuel Needs
Crossing the Pacific requires a huge amount of fuel, and there are no mid-ocean refueling stops. Long-haul flights are planned to ensure fuel efficiency and safety, which is challenging over such a large expanse of water.
2. Curved Routes Are Shorter
Although flying straight across the Pacific looks like the shortest option on a flat map, the Earth’s spherical shape makes curved routes known as “great circle routes” more efficient. These routes often pass over land, saving time and fuel.
3. Risk of Turbulent Weather
The Pacific Ocean is infamous for unpredictable weather, including powerful storms, strong winds, and turbulence. Flights over this vast ocean are more likely to encounter these conditions, making it harder to plan smooth journeys.
4. Limited Emergency Landing Sites
For safety, airlines prefer to stay within a few hours of an airport for emergency landings. Flying over the Pacific offers fewer options for quick landings, increasing risks in case of technical issues or medical emergencies.
These factors, combined with strict aviation safety regulations, explain why most airlines choose safer and more efficient routes that steer clear of the open Pacific