Various Tips

Where relation

BAD

Airline::whereHas('flights', function ($builder) {
  return $builder->where('is_delayed', true);
})->pluck('name');

GOOD

Airline::whereRelation('flights', 'is_delayed', true)->pluck('name');

Squash migrations

Rather than having all your basic migrations, you can use php artisan schema:dump. This will generate a schema dump that will be used next time you run php artisan migrate:fresh.