In the UI it would be nice to duplicate the selected connection, in the menu "With Selected". 

The copy would be set with the same name plus some suffix (_copy, _1, whatever) and it is useful for when you have a connection with all equal fields except something in a particular one. 
airflow/www/views.py
"""Customize permission names for FAB's builtin UserInfoEditView."""
    class_permission_name = permissions.RESOURCE_MY_PROFILE
    route_base = "/userinfoeditview"
    method_permission_name = {
        'this_form_get': 'read',
        'this_form_post': 'edit',
    }
    base_permissions = [permissions.ACTION_CAN_EDIT, permissions.ACTION_CAN_READ]
class CustomUserStatsChartView(UserStatsChartView):
    """Customize permission names for FAB's builtin UserStatsChartView."""
    class_permission_name = permissions.RESOURCE_USER_STATS_CHART
    route_base = "/userstatschartview"
    method_permission_name = {
        'chart': 'read',
        'list': 'read',
    }
    base_permissions = [permissions.ACTION_CAN_READ]
class CustomUserLDAPModelView(UserLDAPModelView):
    """Customize permission names for FAB's builtin UserLDAPModelView."""
    class_permission_name = permissions.RESOURCE_MY_PROFILE
    method_permission_name = {
        'userinfo': 'read',
        'list': 'read',
    }
    base_permissions = [
        permissions.ACTION_CAN_READ,
    ]
class CustomUserOAuthModelView(UserOAuthModelView):