The routes by which Manx people reached the American colonies in the seventeenth and eighteenth centuries are poorly documented. No passenger manifests survive for the period, and the Manx pass system made unofficial departure risky. Several routes were possible. A Manx person could obtain the Governor's licence and take passage from Douglas or Ramsey to Liverpool or Whitehaven, then board an Atlantic vessel. They could cross to Ireland first and embark from Dublin, Belfast, or Londonderry, where the emigrant trade was well established by the eighteenth century. They could join the crew of a trading vessel and leave it in an American port. Or they could enter an indenture with a colonial planter's agent operating in the British Isles, exchanging years of labour for passage and the promise of land at the end of the term. The running trade itself provided another possibility: Manx vessels trading goods between Mann, Ireland, and the continental ports would have offered informal passage to anyone willing to pay or work. After the Revestment of 1765, when the Island's commercial economy collapsed, the emigration intensified and became better documented. The 1827 ships to Ohio were chartered specifically for Manx emigrants, and the press notices of the 1830s and 1840s recorded departures by parish and number. But the earlier, colonial-era movement left few traces beyond the headright patents and land grants in which Manx surnames appear.

For most people in the seventeenth-century British Isles, the Atlantic crossing was beyond their means. The passage from England to Virginia cost between five and six pounds, roughly a year's wages for a labourer. The solution was indentured servitude: a contract in which the emigrant agreed to work for a specified term, usually four to seven years, in exchange for the cost of passage, food, shelter, and clothing during the term. At the end of the indenture the servant received 'freedom dues,' which could include land, tools, clothing, or a sum of money. The system was not slavery, but it was not free labour either. Servants could be bought and sold during their term, could not marry without permission, and were subject to physical punishment. Runaways were hunted and had their terms extended. For people from small island communities like Mann, where the pass system restricted movement and economic opportunities were limited, indentured servitude offered a route to the colonies that required no capital. A person appearing as a 'headright' in a Virginia land patent may have been an indentured servant whose passage was paid by the patentee, a family member transported at a relative's expense, or a free person whose passage was sponsored by an investor. The record does not usually distinguish between them.

The headright system was the primary mechanism for acquiring land in colonial Virginia from 1618 until approximately 1700. Under the system, any person who paid the cost of transporting an emigrant to the colony received fifty acres of land. A settler who paid his own passage received one headright; a wealthy planter who paid for the passage of labourers, servants, or family members received fifty acres per person transported. The system was designed to solve the colony's chronic labour shortage while simultaneously distributing land. Headright records are among the most important sources for early colonial immigration, because they name the people transported. In the absence of passenger manifests, which were not systematically kept before the nineteenth century, headright patents often provide the only evidence that a named individual arrived in Virginia. When a 'Richard Christian' appears as a headright in Captain Samuel Mathews's 1643 Rappahannock patent, or a 'Thomas Christian' patents land independently on the Chickahominy in 1657, these headright entries are the colonial record of their arrival. The system produced a society of large landowners and working poor. A planter who imported sixty labourers could claim three thousand acres. The land was free, but the annual quitrent to the Crown was not, and the land had to be settled and cultivated within three years or the patent lapsed.

Under Manx law, leaving the Isle of Man without the Governor's licence was a criminal offence. The statute provided that 'if any inhabitant of the Island, not being a licensed trafficker, shall transport himself from it without special license from the governor, whether it be in his own boat or in the boat of a neighbour, he shall be proceeded against as a felon, and his goods and property confiscated to the Lord.' A replacement law of 1736 imposed a ten-pound fine on any ship's master who carried a person off the island without the Governor's licence, 'besides paying the debts which such person did owe at the time of his departure.' Train, writing in the nineteenth century, noted that 'this act, although not yet repealed, has fallen into disuse.' The pass system meant that Manx emigration, whether to the colonies or anywhere else, required official permission. Those who left without it risked forfeiture of everything they owned. This makes the question of how Manx people reached the American colonies more complex than simple economic migration: they needed either the Governor's consent, a willingness to risk felony, or passage through an English or Irish port where they were not known. The system also helps explain why so few departure records exist for Manx emigrants in this period.