No, according to Scripture they don’t. This is however a common misconception among some groups. I think it is because people are comforted with the thought that their loved ones become angels when they get to heaven. Angels are mentioned frequently throughout the Bible. They are not flesh and blood like human beings, they are spirit beings referred to as ministering spirits (Heb. 1:12-14) They were created by God. (Psalm 148:1-5). All creating ceased on the sixth day (Gen.1:31-2:1)
Perhaps some confusion exists because angels appeared in the Bible in human form and were often mistaken for men. The writer to the Hebrew Christians states that many entertain angels unaware that they are doing so.(Heb.13:2)
Another reason confusion might exist is statements
Jesus Himself made about angels that have been misunderstood and may be a source of the misconception. He said in Matthew 22:30, “For in the resurrection they neither marry, nor are given in marriage, but are like angels in heaven.” And in Mark 12:25, “For when they rise from the dead, they neither marry, nor are given in marriage, but are like angels in heaven.” Notice He did Not say that they would be angels in heaven but would be like those that are there now in this area of marriage. No other time in Scripture are the risen dead compared to angels and it is Never said that they would become angels.
People who believe that Christians become angels after death refer to these scriptures but they are taking the passages out of context and misapplying the contextual application.. Jesus was not talking about the nature of angels. He was only dealing with the subject of marriage.
He had been asked, “When we get to heaven who will be the husband of a woman who has been married seven times?” (Matt.22:25-30) He told them that the resurrected dead would not be marrying in heaven. Humans were given the commission to ‘be fruitful and multiply the earth’, not heaven.
The scripture is clear: when we die we will “get a “new body at the resurrection” but we will Not become angels. The Scripture is the final authority on this and any other subject. We do not find any reference to human beings becoming angels and vice versa. Angels are always angels, (spirit beings), and human beings are always human beings that have a spirit. We do not become angels in heaven. We will however get spiritual bodies before we get to heaven. (I Cor. 15:42-44)
It is interesting to note that when angels were seen on earth they just appeared and did Not fly in.