Should I change the timing belt in my 2008 Honda Accord?

You didn't give the engine size of your 2008 Honda Accord in your question. If it's a 4-cylinder engine, it has a timing chain and not a belt. No service required and should last the life of the engine so long as you get your oil changed on time. The 6-cylinder engine 3.5L does have a timing belt, so see other answer for the info you needed.

Hello, See below for all you need to know. I do not have your mileage, but timing belts are changed, depending on make and model, between 65,000 miles and 105,000 miles. Your owners manual will have the interval in the maintenance section. If you are around 100k, or the belt shows wear, change it. But also see the link provided, great info! http://repairpal.com/estimator/honda/accord/timing-belt-replacement-cost

IF____IF the services have been kept up , to a good degree, the chain should not need to be replaced under normal conditions. The easiest way to know if it is worn, is to monitor the igbnition spark advance with a scan tool. IF out of spec, that MAY be the cause. Also if you get a 'cam sensor' code that states 'out of phase', that's another indication. Otherwise leave it alone. (FYI-13 year Honda tech at dealership).