How long does it take for USPS to deliver a package to the UK?

7-10 working days

Going from experience about 2 weeks from the date it's posted to you. I just got my wedding DVD posted to me in London from the USA and it took them 2 weeks. Be aware that you may pay a customs fee for your package too! Anything from outside the EU will be charged £8.00 plus VAT.

based on my experience, items sent via "first class mail international" (int'l letter) usually takes about 2 weeks average. when did you order it? cause the tracking shows it starting 27th of april which is only about a week im not sure about your case in particular, but im in oklahoma which is the state above tx. and whenever i send something it has to go all the way to chicago because that is the (one of, im assuming) main international hubs. so after tx it might have to go there, which usually takes a few days. after that it doesnt take too long (day or two) to get to uk. then its up to uk customs and how long they take to process the package. my guess is it has already left the usa and is in uk. the "tracking" for that service is really awful and doesnt update much. for instance, i sent something to australia on 16th of april, and got positive feedback on may 3rd. "tracking" doesnt show anything beyond it being processed in my state! PS: if you purchased it way before the ship date then the seller really sucks

I don't think you have given it enough time. I get a lot of USPS parcels sent to me and they can take 1-3 weeks to arrive and occasionally one has taken longer. If you did not pay for express shipping I am not sure what your rights are. Did you tell the seller that you needed it by a certain date?

Judging by the info it wasn't posted until the 27th April so I wouldn't worry. It takes about a week generally. I speak from experience.