Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Burlington, Vermont as you normally would.
For a flight from Belfast to Burlington, you will be flying into Burlington. Burlington (BTV) is just 3.0 mi from the center of the city. Burlington is the only Burlington airport and it handles 0 inbound flights from Belfast per day. 0 airlines have flights to Burlington from Belfast on a regular basis.