Hey there, Michael! Welcome to planDisney. We are happy to have you bring us your planning question!
I'm so excited to hear that you are planning a visit to Disneyland Resort with your grandchildren! What a special trip! Packages that include flights are not offered through the Disneyland website, unfortunately. If you want to book everything together you will have to look into working with a travel company or travel agent.
Disneyland Resort does offer
Disneyland Resort Hotel Packages that pair your stay at a Disneyland Resort Hotel and your tickets together. There is also
Good Neighbor Hotel Packages that pair hotels near Disneyland Resort with your tickets. You can use the links provided to check both of these options out.
Whichever option you choose I recommend you start making your plans as soon as possible. This is because currently, all tickets must also have
theme park ticket reservations. These reservations can be made after you have purchased your tickets. If you purchase your tickets through the Disneyland website, you will choose your dates during the checkout process and this will include your reservations. Summer vacation plans are in full swing and you don't want your dates to book up!
Since you mentioned being from California, I want to make you aware of the newly released
California Resident Ticket Offer that may work out for you for your trip. These tickets are 3-day One Park Per Day tickets and there are two options available depending on the days you want to use them. You can also upgrade these tickets to Park Hoppers.
Michael, I hope this helps you get a start on your planning for your visit that is fast approaching! I hope it all comes together and you are able to enjoy a magical time at Disneyland Resort together. See you real soon!
Carrie