According to some studies, tomato juice, and many other foods, actually taste different (better in the case of tomato juice) under the low pressure conditions in an airplane than they do at home.
travel.stackexchange.com/users/1371/Michael Borgwardt
I used to drink tomato juice religiously on airplanes and never at home.
As I started to fly more, I stopped ordering it
but I still do occasionally for nostalgia.
The reasons are: it is more filling and closer to food than other juices, especially with a little salt and pepper
it's more expensive than pop or other drinks, which both makes you feel like you're getting more value on the plane, and explains why many people don't drink it at home a little goes a long way, which is another reason not to buy a large can at home
- I would be unlikely to drink it all before it spoiled.
at some point the whole thing becomes a self fulfilling prophecy "oooh, I'm on a plane, I should have tomato juice, that's what people do on planes" and somebody watching you learns that tomato juice is simply de rigeur on the plane
I should point out that grocery stores do sell both large and small cans of tomato juice, and they get plenty of shelf space, so clearly some people are drinking it at home.
travel.stackexchange.com/users/46/Kate Gregory
When I worked as cabin crew, people who order tomato juice sometimes order it warm and they ask for salt and pepper
, I guess it is the closest thing to tomato soup.
I also think it is a rich juice which will help them if they are hungry, it is heavy and it will make them feel full.
I've also seen fellow flight attendants in their rest time on long haul flights heat it in the oven or microwave and put some lemon, salt, pepper and croutons and voila!
Tomato soup is ready.
Personally, I hate it for other reasons, if it's spilled on clothes, you can't just wipe it off and continue, you have to change it or it will smell awful in no time.
travel.stackexchange.com/users/10051/Nean Der Thal
I'm astonished to see that nobody has posted the reason I drink tomato juice on planes -- they're an essential ingredient for a Bloody Mary !
(courtesy William Clifford, Wikimedia Commons)
Although I do usually reserve this indulgence for ass-crack-of-dawn flights on Monday mornings and/or last flights out on Fridays, and naturally this requires an airline that doesn't charge you up the wazoo for a minibottle of vodka.
travel.stackexchange.com/users/1893/lambshaanxy
Another hypothesis can be found in a Guardian article on how sound affects taste .
The hypothesis is based on a previous study where it is found that a loud background noise suppresses the perception of sweetness and saltiness.
However, one researcher thinks that tomato juice has an umami taste, which might not be surpressed by the loud environment: ...
Spence points out: "Have you ever noticed how many people ask for a bloody mary or tomato juice from the drinks trolley on aeroplanes?
The air stewards have, and when you ask the people who order, they tell you that they rarely order such a drink at any other time."
Spence reckons this is because umami may be immune to noise suppression.
travel.stackexchange.com/users/2708/Saaru Lindestøkke
Campbell's V8 drink is very popular and available throughout (convenience stores and such), while being basically a glorified tomato juice.
And people do drink it at home.
:)
One may also consider, that a typical long-haul flight carries people from very diverse cultural backgrounds.
For example, tomato juice was a very popular beverage in former USSR, with vendors selling it by glass over the counter at every juice stand.
travel.stackexchange.com/users/8016/oakad
A further reason to those mentioned previously is that several sources have claimed tomato juice can prevent you from getting DVT (deep vein thrombosis).
According to, for example, the Daily Mail : Eating tomatoes can help prevent airline passengers developing deepvein thrombosis, British scientists have proved.
The research has shown, however, that tomatoes contain a unique chemical which similarly thins blood[...]
So it's likely that it may not just be the taste, but people doing it for a safety reason.
travel.stackexchange.com/users/101/Mark Mayo
For me, I have it only while flying domestic in the US.
The reason is that out of the very limited selection of free stuff you can get from any US airline, tomato juice is the closest thing to some sort of savory, filling food-like substance.
This is especially true since these days they often don't even have peanuts or some of those mini pretzels or mini cookies for free.
In those other parts of the world where airlines actually serve you food and other good stuff, I have never asked for tomato juice.
And outside of a plane, I have drunk it probably about once a year on average, throughout my lifetime.
travel.stackexchange.com/users/8803/Kenny LJ
Of all the drinks that are offered on board, other than water - tomato juice is the one that affects jet lag the least.
Coffee (and other drinks with caffeine, like tea and mountain dew/energy drinks) will dehydrate you, which causes eye irritation and increases the symptoms of jet lag .
Alcohol does the same as above.
You are left then with natural fruit juices (difficult to find without added sugar); these tend to be too acidic as well.
Leaving you with humble tomato juice.
I have to say, outside the US I have not seen tomato juice offered (
at least, I didn't spot it on the cart).
Its usually some fruit cocktail, alcohol (if available), water, carbonated drinks and if you are lucky, ginger ale.
travel.stackexchange.com/users/1375/Burhan Khalid
Tomato juice seems to be a favorite drink for many travelers to have on board an airplane. I've seen this on almost every flight I've been on, but I have never noticed this same trend at ground-level.  What are the reasons for that? Is there an origin of this trend?
Why do people on airplanes often have tomato juice as a drink?
travel.stackexchange.com
<air-travel><food-and-drink><factoids>
travel.stackexchange.com/questions/19808
travel.stackexchange.com/users/4210/graup
Tomato juice is filling and can be drunk cold or warm, sometimes with salt and pepper. It has a strong flavour, and according to some studies will actually taste different under the low pressure conditions in an airplane. Several sources have claimed tomato juice can prevent you from getting DVT (deep vein thrombosis), and it is less likely to cause jet lag than caffeinated drinks.  The popularity of tomato juice on planes may be due to a number of factors. First, some foods taste better on a plane. Secondly, many planes do not serve food, so tomato juice, being more like a food than other drinks, may stop people feeling hungry. Finally, tomato juice may have health benefits as apparently it helps prevent deep vein thrombosis and it does not make jet lag worse.
Some studies show that tomato juice tastes better in a plane. Tomato juice is closer to food than other drinks and may stop passengers feeling hungry on planes that do not serve food. Tomato juice is an essential ingredient for Bloody Mary. Tomato juice helps prevent deep vein thrombosis and it is the only drink with water that does not make jet lag worse.