Hey there Maggie,
Welcome to planDisney and thanks so much for your question!
Prices for
theme park tickets are always subject to change, but they are typically static for each given ticket category. While there can be ticket price increases broadly across the board for all tickets, these increases don't happen frequently. Outside of these broad price increases, they stay relatively static throughout the year based on their ticket category/tier (more on that below) throughout the year. Put another way, they're not like an airline fare where you might look at the price of a flight one day and then see the price fluctuate for that same flight on another day.
Where you do see different ticket prices come into play are mostly for 1-day tickets. This isn't due to random price fluctuations, but rather to a
tiered system that the Disneyland Resort utilizes where different days throughout the year are assigned a different ticket tier (0-6). From my experience, the lower the number of tier for a given day, the more discounted the ticket price and the lower the crowd level.
These tiers are set for the year so you can plan your trips around them and know what to expect in terms of pricing because the pricing for each tier is set, which is why I was saying above that prices do not fluctuate like airline fares. If you're planning on visiting the park on a tier 6 day (for a 1-day park ticket) then that ticket price should be the same whether you buy it on January 3 or January 23 - barring the more general ticket price increase across the board that I mentioned above.
Conversely, the multi-day ticket prices don't change like the 1-day tickets do as they do not utilize the tiered day system like the 1-day tickets do.
Practically speaking, the way I approach this when planning a trip - since tickets are technically subject to change at any time - is that I first settle on the dates that we're able to visit (based on our own family calendars), then I buy the tickets as soon as we're able to. We typically visit using multi-day tickets, but if we were going to visit for a single day and my dates were flexible, then I'd look at the
1-day tier prices for the dates we could visit and find the day with the lowest tier (and thus the most discounted ticket).
I hope that's helpful for planning your next trip to the Happiest Place on Earth! Thanks again for your question, Maggie. Feel free to come back and see us with any follow-ups - we'd be glad to help!
Have a Magical Day,
Greg