There are far too many species of hummingbirds to mention every variety in this post, but this information will give you some general information on the migration of several different species of hummingbirds.
Ruby-throated Hummingbird Migration
Ruby-throated Hummingbirds normally spend the winter in Central America. From March through May they migrate north, some through the eastern two thirds of Texas, some apparently through Cuba and Florida, and some apparently directly across the Gulf of Mexico. Birds reach the southern Gulf coast in late February and early March. Later migrants fly to breeding grounds further north. The farther north they are going the later they travel. Arrival time on the breeding grounds tends to not occur until food plants are blooming. Departure time also corresponds with the end of the blooming season for food plants. Fall migration lasts from late July until late October in the southern states.
Black-chinned Hummingbird Migration
In spring Black-chinned Hummingbirds can be seen returning to Texas, New Mexico, and Arizona from mid-March through May. They reach Southern California by late March. It may be May before the species reaches the northwest states and British Columbia.
In fall they leave west-coast areas in mid-August and September. In Texas they are usually gone by mid-October. Black-chinned hummingbirds winter mostly in Mexico.
Broad-tailed Hummingbird Migration
Broad-tailed Hummingbirds spend the winter in mountains of Mexico. During spring migration they reach west Texas in March and April. In Arizona Broad-tails usually show up in March or early April. More northern states like Wyoming may not get Broad-tails until May. Broad-tails regularly migrate as far west as eastern California.
In fall they leave Wyoming and Colorado in September. Arizona, New Mexico and Texas may see fall migrants as late as October.
Rufous Hummingbird Migration — In spring Rufous Hummingbirds migrate up the Pacific coast, passing through California from February to May. The birds reach British Columbia in early April and Alaska by mid-April. Birds arrive in Idaho and Montana around the end of April.