Thanks for your help Looks like am going to need to buy some more US stamps soon.

US First Class Stamp is .44; when I've sent to the UK using a 9x12 envelope (with pictures and a second 9x12 in it), it usually has come to around $2.98. You would want to use about 7 stamps. I think you can just write air mail and it will be fine. When I take it to the post office usually the teller stamps it for me, but sometimes they've gone out without air mail written or stamped on them.

Hi,

Just wondering if you can help me?

I noticed in one of the other topics it gave your prices of mail from USA to uk

To mail FROM the USA TO the UK and Europe:
A First-Class Mail® International - Large Envelope

$1.24 10g (.35 oz)
$1.24 20g (.70 oz)
$2.08 40g (1.40 oz)
$2.92 60g (2.10 oz)
$2.92 80g (2.80 oz)
$3.76 100g (3.50 oz)

So Say I was sending a large envelope that was 100g how many US first class stamps would I need to put on it? Is going from the USA to UK, also is a large envelope A4 size? Last question is do I need to put an airmail sticker on it or will the person posting it do that?

Hope you can explain..