# Eating in a flight
**URL:** https://boards.straightdope.com/t/eating-in-a-flight/962424
**Category:** The Quarantine Zone
**Tags:** covid-quarantine
**Created:** [April 6, 2022, 10:14pm UTC](https://boards.straightdope.com/t/eating-in-a-flight/962424 "2022-04-06T22:14:14Z")
**Posts on this page:** 2
**Page:** 2
### Author:  [@Joey\_P](https://boards.straightdope.com/u/Joey_P)
#### Post date: [April 8, 2022, 3:45pm UTC](https://boards.straightdope.com/t/eating-in-a-flight/962424/21 "2022-04-08T15:45:55Z")
> [@Mr.Duality](#):
>
> Most if not all passenger airliners put their entire air supply through a HEPA air filtration system every few seconds. Don’t worry about it.
> [@Chronos](#):
>
> Despite all the warnings you’ve heard about how an aircraft is an enclosed space, the reality is that the air is completely replaced very quickly
And not only that, the air, IIRC, moves through the plane from side to side or top to bottom, not from one end to the other. The idea being that if someone is sick\* they’re less likely to pass that on to someone not in their immediate vicinity.
\*Wherever I picked that up from, it wasn’t about being sick as much as it was about clearing out cigarette smoke faster, but I imagine it works for both.
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### Author:  [@D\_Anconia](https://boards.straightdope.com/u/D_Anconia)
#### Post date: [April 8, 2022, 4:14pm UTC](https://boards.straightdope.com/t/eating-in-a-flight/962424/22 "2022-04-08T16:14:01Z")
United calls them “preferred seating”, which is separate from Economy Plus that has the extra legroom.
I haven’t flown in three years, so it’s news to me as well.
[Preferred seating (united.com)](https://www.united.com/ual/en/us/fly/products/travel-options/preferred-seating.html)
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