As the weather begins to cool this September, you’re likely turning your attention to classic fall activities such as enjoying a football game or taking in the changing colors of autumn leaves. But it's a good idea to also spend some time focusing on a few personal finance tasks to make sure your money is on track for the rest of the year.

September is a good month, for instance, to review your workplace benefits before open enrollment begins. You might also want to think ahead to booking Thanksgiving travel, especially if you are traveling by air.

Read on for those and other tasks that should be on your September financial to-do list, as well as insight into which items are on deep discount this month:

Review Your Benefits

Most companies will run their open enrollment period for next year’s benefit selection in the next month or two. Prepare by taking a look at the health insurance plan you selected this year and consider whether it adequately meet your needs. Also think about whether you have any life events coming up that could impact which benefit package you select next year.

This is also a good time to take a look at any use-it-or-lose-it flexible spending accounts, such as some healthcare and dependent-care accounts to make sure you’re not missing out on reimbursements. Also, consider adding to your financial to-do list reviewing your 401(k) contributions if you’re not maxing out the account.

Pay Quarterly Taxes

If you work for yourself, earn freelance income on the side, and expect to owe more than $1,000 in taxes for the year, make sure that paying estimated quarterly taxes by September 15 is on your financial to-do list. Missing the deadline or underpaying, could result in fines come tax time.

You can either estimate four equal payments based on how much you earned last year (if you think your income will be relatively flat), or you can figure out your payment based on how much you think you actually earned each quarter. If that sounds too complicated, it may be time to enlist the help of a tax pro.

Book Thanksgiving Travel

Making your Turkey Day travel plans now could yield some serious savings. As airlines have consolidated and trimmed down their fleets, they’re more likely to fly planes at capacity and less likely to discount seats, especially during the holidays when demand peaks.

Airfare prices will rise an average of $1 per day through September 15 and then $2 per day from September 15 to October 31, according to FareCompare, before spiking by $4 per day for the procrastinators booking in November.

Plus, booking now means you’ll have the best selection of dates and times for your trip. The least expensive flights (aside from those on Thanksgiving Day itself) are offered on Tuesday through Saturday, according to FareCompare, while you’ll pay the most if you want to fly the Wednesday before the holiday or the Sunday after.

Schedule an HVAC Tune-Up

Before the temperatures start to drop, have an HVAC contractor come take a look at your system to make sure it’s running as efficiently as possible. You'll be glad this was on your financial to-do list. A tune-up typically includes a visual inspection, a filter change, and a thermostat check to make sure that the system is turning on and off at the appropriate temperature. The service will cost you a few hundred bucks, but it will help prevent expensive or dangerous problems during peak season.

If you haven’t upgraded to a programmable thermostat yet, this is a good time to do so. Using one can help cut your energy bills by as much as 10 percent per year, according to the Department of Energy.

Buy Items on Deep Discount

This is a great time of year to find deals on small electronics such as digital cameras or Blu-Ray players. Online stores may offer better quality, selection, and price then you’ll find by shopping with brick-and-mortar retailers.

Research by Consumer Reports product experts, who track prices year-round, shows that September is an ideal time to snag deals on end-of-season items like gas grillslawn mowers, and plants for your yard.

Now is also a good time to buy a new bicycle, and you’ll still have time to get in several months of riding in most parts of the country before the weather turns. In this case, it’s worth going to a brick-and-mortar store that specializes in bikes. You’ll get better service, including a bike that’s properly assembled and adjusted for your body and biking needs.