Ok i'm confused about united airlines luggage restrictions. I get that check luggage is 62 linear inches. However, I have talked to several reps and I all get different answers to carry on restrictions. On uniteds website it says a total of 45 linear inches. When I talked to one rep he said 39 linear inches with a max of really 40. Yeah so I called back and another rep was saying that it is 45 linear inches, but it has to be 9 (h)&quot; x 14(w)&quot; x 22(L)&quot;. When I ask her about the luggage in question she says no that won't work. Huh? One of the pieces I was wanting to carry on is 8.5&quot; x 17.5&quot; x 15.5&quot; which would be 41.1 linear inches. According to her it <b>HAS</b> to be in these specs 9 (h)&quot; x 14(w)&quot; x 22(L)&quot;, but on the website it says <b>OR</b> 45 linear inches (the length, height and width added together). So does it have to be the reps specs or can it be just a total of 45&quot;? I'm all confused.

Btw I'm going to London and as I search for for restrictions I search again on uniteds website it's says for flights from the uk said (17.7&quot; × 13.7&quot; × 6.2&quot which is a total 37.6&quot; http://tinyurl.com/fhx7k. The 45&quot; says that it's for For travel worldwide on United. http://tinyurl.com/ab7kq
So what is it?

I think the idea on the carryon restrictions was that it could nominally go under the seat in front of you if needed. Because the overhead bins have somewhat more space, airlines tended to let people stretch that size for a while, until it started getting out of hand. A lot of airlines have started having a test box at the gate or checkin; if it won't go in the box, you can't carry on (your 15.5&quot; dimension wouldn't make it on the ones I've seen).

ok thanks...cause I keep getting different answers. So they don't add it up like for checked baggage. Thanks cause yeah that was annoying. I just bought one that is 15x 10.625 x 5 (38.1 cm x 27cm x 12.7cm)

&lt; flights from the uk said (17.7&quot; × 13.7&quot; × 6.2&quot which is a total 37.6&quot; &gt;

You CANNOT use linear inches - ie 37.6&quot; - when departing the UK for anywhere. When they say '17.7&quot; × 13.7&quot; × 6.2&quot;' they mean that your SINGLE PIECE of hand luggage has to fit in that space - so if you had a bag 19x12x6 it would have to be checked.

By single piece I mean single piece - everything you carry on the plane (except in your pockets) has to fit into one bag, so no carrying a bag, purse, shoulder bag, hand bag, rucksack, plastic bag. You can only have one of them per person

BTW I would never rely on a linear inch measurement once outside the US. Most airlines use specific height*width*depth