Maui to Portland Maine Turbulence Forecast

OGG → PWM · 5,046 miles · ~10h 36m

What to Expect

Your Maui to Portland flight is a long one, covering diverse terrain and weather. Initially, expect the possibility of Oceanic Clear-Air Turbulence and Oceanic Convection as you cross the open Pacific. Approaching the Pacific Coast, Clear-Air Turbulence (CAT) might occur. As you fly over the Cascades and then the Northern Rockies, be prepared for potential Mountain Wave Turbulence. Crossing the Great Plains and the Upper Midwest could bring more Clear-Air Turbulence (CAT). Near the Great Lakes, Lake-Effect Turbulence is a possibility. Finally, over the Northern Appalachians, you might experience Mechanical Turbulence, and as you approach the Atlantic Seaboard, Clear-Air Turbulence (CAT) may again be present. Pilots are highly trained to manage these common weather patterns and use onboard radar and reports from other aircraft to navigate them safely. They will often adjust altitude slightly to find the smoothest air, so trust that you're in good hands.

The flight between Maui and Portland Maine passes over the Cascades, the volcanic mountain chain stretching from northern California through Washington. When moist Pacific air is forced up and over the Cascades, it creates both orographic turbulence and downstream wave activity. The terrain is especially steep near major volcanoes like Mount Rainier, amplifying the effect.

Turbulence Factors on This Route

• Oceanic Clear-Air Turbulence: Transoceanic jet stream crossings produce extended stretches of clear-air turbulence over the open Pacific.
• Oceanic Convection: Isolated thunderstorms over warm Pacific waters can develop away from radar coverage, catching flights off guard.
• Mountain Wave Turbulence: The Cascades create lee waves and orographic turbulence, especially when Pacific weather systems push moist air over the range.
• Mechanical Turbulence: The Northern Appalachians generate low-level mechanical turbulence during strong post-frontal northwest winds.

When Is This Route Bumpiest?

For the smoothest possible flight, aim for spring, early summer, summer, early fall, or fall. The atmosphere is generally more stable during these times. Winter, late summer, early spring, late fall, spring, early winter tend to be bumpier. This is because temperature differences and stronger jet streams can create more Clear-Air Turbulence over the plains and coasts, while increased storm activity can generate more Mountain Wave Turbulence near the Rockies and Cascades and Lake-Effect Turbulence near the Great Lakes.

Tips for This Flight

If you're concerned about turbulence, booking a morning flight can often lead to a smoother experience. Any turbulence you encounter on this route will likely feel like driving over a bumpy road or a sudden dip. Choose a seat over the wing, as this area experiences less motion. Staying well-hydrated and practicing deep, calming breaths can also help you feel more relaxed throughout the flight. Remember, turbulence is a normal part of flying, and the crew is there to ensure your safety and comfort.

Get Your Forecast

Related Routes

See all routes from Maui or to Portland Maine.

More from Maui

More to Portland Maine

Forecasts based on NOAA HRRR and GFS atmospheric model data.