Why Airplane Food Actually Tastes Different

Airplane food tastes bland mainly because of the cabin, not the recipe: dry air, low cabin pressure, and constant engine noise blunt your sense of smell and reduce how strongly you perceive salt and sugar. Airlines compensate with extra seasoning and umami-rich dishes, which is why curries and tomato-based foods tend to hold up best in the air.

We've all heard the jokes: airplane food isn't exactly a five-star dining experience. It often tastes remarkably bland, overly salty, or just fundamentally off. It's easy to blame the airlines for cutting costs or using low-quality ingredients for mass catering. But before you write a harsh review of that in-flight chicken dish, you should know that the real culprit isn't the chef—it's the altitude.

Here is the science of why your taste buds essentially go on strike when you are flying at 35,000 feet.

How Does Flying Affect Your Sense of Taste?

Flying changes both of the senses that create flavor. Eating is a multi-sensory experience: what we perceive as "flavor" is actually a combination of taste (what happens on your tongue) and smell (what happens in your nose). When you step onto a commercial airliner, the environment fundamentally changes how both of these senses operate.

1. The Desert in the Sky (Low Humidity)

The air inside an airplane cabin is incredibly dry. At cruising altitude, cabin humidity is often kept at around 12% to 20%. To put that into perspective, that is drier than most deserts!

This extreme lack of moisture immediately dries out your nasal passages and your mouth. Since your sense of smell relies on moisture to properly dissolve and detect odor molecules, this dry environment severely blunts your olfactory system. Because smell accounts for up to 80% of what we perceive as flavor, your food loses a massive portion of its taste profile before you even take a bite.

2. The Pressure Problem

Airplane cabins are pressurized, but not to sea level. The air pressure inside the cabin is typically equivalent to being at an altitude of about 6,000 to 8,000 feet.

Lower pressure affects the physical behavior of odor molecules. They don't release from the food and travel to your nose as easily as they do on the ground. Furthermore, the combination of low pressure and low humidity numbs your taste buds. Studies have shown that your perception of saltiness and sweetness drops by around 30% when you are in an airplane cabin!

3. The Constant Roar of the Engines

The noise of a plane also affects taste, which usually surprises people. The constant, low-frequency hum of the jet engines (often around 85 decibels) impacts your ability to taste.

A field of study called "neurogastronomy" has revealed that loud, continuous background noise distracts the brain and diminishes our ability to perceive sweet and salty flavors. Interestingly, background noise can actually enhance the perception of "umami"—the savory, meaty flavor found in foods like tomatoes, mushrooms, and soy sauce.

How Do Airlines Make Food Taste Better at Altitude?

Airlines know about these biological hurdles, and the catering companies that design in-flight meals use a lot of food science to compensate for the altitude effect.

• Pumping Up the Seasoning: Because your ability to taste salt and sugar drops by 30%, caterers have to add significantly more salt and sugar to airplane food than you would ever use on the ground just to make it taste "normal."
• Leaning into Umami: Since the umami flavor is relatively unaffected (and sometimes enhanced) by the cabin environment, airlines often rely on umami-rich ingredients. This is why dishes with heavy tomato sauces, curries, stews, and cheeses often taste better on planes than subtle, delicate dishes like mild fish or plain chicken.
• The Tomato Juice Phenomenon: Have you ever noticed that people order tomato juice or Bloody Marys on airplanes much more frequently than they do on the ground? This isn't a coincidence. The high umami content in tomatoes makes these drinks taste much more vibrant and satisfying at high altitudes.

How Can You Enjoy Airplane Food More?

A few simple choices can improve your in-flight meal:

• Stay Hydrated: Drink plenty of water before and during your flight. Keeping your mouth and nasal passages moist will help your taste buds function a bit better.
• Order the Curry: When the flight attendant gives you the choice between the chicken in a mild herb sauce or the spicy beef curry, go for the curry. Bold, spicy, and umami-rich foods hold up much better at 35,000 feet.
• Wear Noise-Canceling Headphones: If engine noise is distracting your brain from tasting your food, put on a pair of good noise-canceling headphones while you eat. It may noticeably improve the flavor.

So, the next time you peel back the foil on an airplane meal, remember that it's a scientific miracle you can taste anything at all!