A gigantic moving day at Los Angeles International Airport has gone off without a hitch.

The airport says seven airlines switched terminals overnight, while Delta Air Lines completed the first of three days of moving operations.

Several other airlines are moving Sunday.

The relocation involves moving planes, transporting hundreds of computers and thousands of boxes, relocating furniture and changing signs.

In all, 15 airlines are swapping terminals while others are switching ticket counters within terminals. The relocations will continue into Wednesday morning.

Shuttle buses and volunteer guides in neon green are helping travelers find the right terminals and only minor problems have been reported.

The shuffle was prompted by Delta’s move and that airline is picking up the costs.

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Photo Credit: Warning signs advise travelers that their airline's terminal may change as they approach Los Angeles International Airport. Numerous airlines will begin moving to different terminals or to new ticket counters in their current locations, beginning Friday night. The moves over several days are part of a massive overhaul of the heavily used airport and have been planned for months. Reed Saxon / Associated Press