6-8 weeks
Your AncestryDNA test results will normally take about 6-8 weeks to process from the time that the lab receives your DNA sample. Please note that you must also activate your DNA kit online in order to begin processing. If you have taken one of the Y-chromosome and mitochondrial DNA tests, you will still have access to your results until September 30, 2014. You can access them here or on the AncestryDNA homepage. Please click here for more information. Your DNA test results also provide information that’s more relevant and recent—targeting your family history a few hundred or even a thousand years ago, as compared to the Y-chromosome or mitochondrial DNA tests, which have a 10,000 to 50,000 year time focus. If you have taken one of the Y-chromosome and mitochondrial DNA tests, you will still have access to your results until September 30, 2014. You can access them here or on the AncestryDNA homepage. Please click here for more information. I ordered the Ancestry.com DNA test in July. I got my results back last week (it took about 3 weeks to get the results back). The results showed West African 44%, British Isles 29%, Scandinavia 12%, Finnish-Volga/Ural 11%, and uncertain 4%. I was certain that Ancestry had mixed up my sample with another. Then 4 months after receiving my “incorrect” DNA results from Ancestry.com, my 86 year old mother revealed that my biological father was in fact a long time family friend and not the father who raised me. My own mother confirmed the DNA test results. That is crazy. At 9 weeks, they should at least check with the lab and look into why it is taking so long. I wish I could ask for a refund. They used false advertisement to get people to purchase the test. On facebook, it was an ad that said results could be expected 2 to 4 weeks. Four months for DNA results, still waiting. I had a DNA kit sent to my BIL for his birthday in August. He spit, sent it off, and 10 weeks later was informed that it didn't work so they sent him a new kit. It has now been 9 weeks since the lab received his second spit, no result Your AncestryDNA test results will normally take about 6-8 weeks to process from the time that the lab receives your DNA sample. Please note that you must also activate your DNA kit online in order to begin processing.  As of September 16, 2015, the following tests have delays in normal turnaround times: Y-DNA – 9 to 10 weeks. Toggle. Most of our tests typically take 6 to 8 weeks to complete from the time we receive your sample in our lab, except Family Finder, which is usually 4 to 5 weeks and Big Y, which is usually 8 to 10 weeks. 
http://dna.ancestry.com/legal/faq http://dna.ancestry.com/legal/faq http://thegeneticgenealogist.com/2012/04/02/a-review-of-ancestrydna-ancestry-coms-new-autosomal-dna-test/ http://ancestryforums.custhelp.com/posts/9bf4bf5a68 https://dna.ancestry.com/ https://www.familytreedna.com/learn/testing-process/return-kit-long-will-results-take/
how long has it been taking to get results from ancestry dna test