Why Does Food Taste Bland on a Plane? What You Can Fix
Food tastes bland on a plane because the cabin dulls both smell and taste at once. The air holds very little moisture, so the inside of your nose dries out and stops picking up aromas. Lower cabin pressure blunts salty and sweet flavors, and loud engine noise mutes sweetness even more.
The meal plays a part too, since it is cooked on the ground and reheated hours later. But not every flavor fades the same way, and a few of the causes are in your hands. This guide explains which ones, and what to order and do so your next in-flight meal tastes more like food.
Key takeaways
- Dry cabin air dries your nose, and smell drives most of what people call flavor.
- Low pressure made salt taste 20–30% weaker and sugar 15–20% weaker in lab tests.
- Engine noise mutes sweet tastes but makes savory umami taste stronger.
- Sour, spicy and savory foods hold up best at altitude.
- Eating early, choosing bold dishes and keeping your nose moist all help.
Three things in the cabin dull your sense of taste
Researchers point to three cabin conditions that change how food tastes in the air. Oxford psychologist Charles Spence, who has studied in-flight eating for years, names them as low humidity, low air pressure and background noise. Each one works on a different sense, and they stack on top of each other.
Dry air dries out your nose
At cruising altitude, cabin humidity sits between 5% and 12%, according to FAA-sponsored in-flight cabin air monitoring. That is drier than the Sahara, which sits around 25%. Indoor air at home is usually closer to 40–50%.
Your nose needs a thin layer of moist mucus to work. Aroma molecules dissolve into that layer before smell receptors can read them, so a dry layer lets fewer aromas through and food tastes flat. For more on the cause, see why airplane cabins run so dry in the first place.
Lower pressure blunts salt and sugar
Planes are pressurized, but not to sea level. The cabin is kept at a pressure similar to being in the mountains, up to the equivalent of about 8,000 feet. Lab tests suggest this thinner air makes your taste buds less sensitive.
The best-known tests come from the Fraunhofer Institute for Building Physics flight lab, which runs taste trials for Lufthansa in a sealed section of a real Airbus. There, salt tasted 20–30% less intense and sugar 15–20% less intense. Fruity aromas and sour flavors held up far better.
Engine noise mutes sweetness
A long-haul cabin hums at about 85 decibels, close to the sound of heavy city traffic. In a Cornell study of airplane noise and taste, people tasting in loud cabin noise rated sweet foods as weaker. Savory umami foods, by contrast, tasted stronger.
The researchers suspect the cause is a nerve called the chorda tympani. It carries taste signals from the tongue and passes right through the middle ear, so loud sound may interfere with it. That would explain why noise changes some tastes but not others.
Smell fades first, and it gets worse as the flight goes on
Much of what people call taste is really smell. As you chew, aromas rise from the back of your mouth into your nose, and your brain blends them with taste. That is why food tastes dull when you have a head cold.
Scientists at the Fraunhofer lab put it the same way. In the air, they say, food tastes as it does when you have a cold. Dry air and low pressure work together to dull your sense of smell.
Timing matters as well. Wine buyers who supply airlines report that drinks taste thinner later in a long flight, once travelers have dried out more. Their advice is simple: enjoy the good glass early, not near landing.
Which flavors fade and which hold up
The cabin does not flatten every flavor equally. Salt and sugar lose the most, while sour, spicy and savory flavors stay strong. This table pulls the research together so you can order with it in mind.
| Flavor | At cruising altitude | Main reason |
|---|---|---|
| Salty | Much weaker (20–30% in lab tests) | Low pressure and dry air |
| Sweet | Weaker (15–20% in lab tests) | Low pressure, plus engine noise |
| Sour and acidic | Holds up well | Less affected by pressure |
| Fruity aromas | Mostly holds up | Less affected by pressure |
| Umami (tomato, mushroom, soy) | Holds up or tastes stronger | Noise seems to boost it |
| Bold spices (curry, lemongrass, ginger) | Holds up well | Strong aromas cut through a dry nose |
| Mild dishes (plain fish, chicken) | Tastes flat | Relies on salt and subtle aroma |
Why tomato juice tastes better in the air
Lufthansa once noticed that its passengers drank almost as much tomato juice as beer. That is odd for a drink few people order on the ground. The research above explains it: tomato is rich in umami, the savory taste that noise seems to boost.
Tomato juice also brings acid and salt, and the acid holds up well at altitude. So a drink that tastes heavy at home can taste bright and balanced in the cabin. Airline chefs now use the same trick, adding tomato, mushroom and seaweed to dishes for an extra savory kick.
It is not only you: how airline meals are made
The cabin is the biggest factor, but the meal itself starts at a disadvantage. Food safety rules mean meals are cooked on the ground, chilled, loaded and then reheated in flight. Most planes reheat with convection ovens that blow hot, dry air, which can toughen meat and dry out sauces.
Airline chefs know this, so many add more salt and spice than a restaurant would. Small details matter too. Spence's research suggests that light plastic cutlery and thin cups make food seem less appealing than heavy metal forks and real glasses.
What you can do about bland airplane food
Some causes are fixed, but others are not. You cannot change cabin pressure, but you can change what you eat, when you eat and how dry your nose gets. This table sorts each cause by how much control you have.
| Cause | Can you change it? | What helps |
|---|---|---|
| Low cabin pressure | No | Pick foods that resist it: sour, spicy, savory |
| Engine noise | Partly | Noise-canceling headphones while you eat |
| Dry nose | Partly | Water, saline spray, humidified air |
| Drying out over time | Partly | Eat and drink the best things early |
| Reheated meal | Yes, if you plan | Bring your own bold snacks or seasoning |
Order bold, savory and sour
Choose curries, tomato-based sauces, spiced noodles and dishes with ginger or citrus. These rely on strong aromas and umami, which the cabin dulls least. Plain fish, plain chicken and delicate desserts are the dishes most likely to disappoint.
Eat early and pace your drinks
Your nose keeps drying out the longer you fly. If the first meal service is the better one, take it rather than waiting. The same goes for a glass of wine you want to enjoy.
Block some of the noise
Noise-canceling headphones cut the engine hum that mutes sweetness. No study has tested whether wearing them restores taste mid-meal. Still, the research on noise suggests it is a cheap thing to try.
Keep your nose from drying out
Sip water through the flight, and consider a saline nasal spray to keep the lining moist. Chef Heston Blumenthal once tried handing out nasal spray before British Airways meals for this exact reason. If you are weighing options, this comparison of saline spray and humidified air for flying covers the trade-offs.
Breathing warmer, moister air between meals is another option. Heat and Moisture Exchange (HME) masks, the same class of technology used in medical respiratory care, trap the moisture you breathe out and return it on the next breath. Read more about what a dry nose on a plane feels like and what helps.
Pack your own flavor
Solid snacks with strong flavors travel well and pass airport security without fuss. Think aged cheese, dark chocolate, salted nuts or spiced crackers. A small shaker of chili flakes or a seasoning blend can rescue a bland tray.
Does your sense of taste come back after landing?
Yes, for most travelers taste returns soon after landing. Normal pressure, quieter rooms and more humid air let the nose and taste buds recover. Drinking water and spending time in normal indoor air helps the lining of the nose rehydrate.
The dulling is tied to cabin conditions, so for most people it is temporary. If your sense of smell or taste stays dull for days after a flight, speak to your doctor. A lingering loss can have other causes worth checking.
Frequently asked questions
Why does food taste different on a plane?
Three cabin conditions change how food tastes. Dry air dulls smell, low pressure makes salt and sugar taste weaker, and engine noise mutes sweetness. Together, they make most food taste flatter than it would on the ground.
Do airlines add extra salt to their food?
Many do. Chefs at large airlines have said they season in-flight meals more heavily to make up for the cabin. Some also add umami-rich ingredients like tomato and mushroom for depth.
Why does wine taste different on a plane?
Wine buyers who supply airlines report that fruity wines can taste thinner and more acidic in the air. Dry air and low pressure dull the fruit while the acid holds up. Some airline wine buyers favor softer, fruit-forward wines for this reason.
Do newer planes make food taste better?
Some newer jets keep cabin pressure a little higher, and a few run slightly more humid air. See this guide to which planes have the most humid cabins. No study has shown that meals taste noticeably better on them, though.
Is it normal to lose your appetite on a plane?
Many travelers find food less appealing in flight, and bland flavor is a big part of that. Sitting still for hours and changes to meal times can also play a role. It usually passes once you land and settle in.
Next time you fly
You cannot control the oven or the cabin pressure, but you can control a lot. Order the curry over the plain chicken, eat the good meal early and keep sipping water. Small choices like these make a real difference to how the food tastes.
For travelers who want to keep their nose and throat comfortable on long flights, the Kuvola humidifier mask uses HME to return moisture to the air you breathe. It needs no batteries, no water and no electronics. Wear it between meals, and take it off when the trolley comes around.
Photography: Mick Haupt, Nicolas J Leclercq and Nahima Aparicio via Unsplash.
