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Published on: 9/23/2026
Adults 65 and older should generally get a flu shot in September or October, ideally before the end of October, since flu activity typically rises in late fall and peaks between December and February. Timing matters more with age because protection can fade over several months, yet vaccinating too early may leave you less protected at the height of the season; if you miss October, getting vaccinated in November, December, or even later is still worthwhile. Seniors are also preferentially recommended to receive a higher-dose or adjuvanted flu vaccine, and coordination with COVID-19 or RSV vaccines, chronic conditions, and travel plans can shift the best date for you. There are several important factors to weigh, so see below to understand more before you book.
If you are unsure whether recent symptoms are flu, a cold, or something else that should delay or change your vaccine timing, a free, instant, online symptom check can help you make sense of what you are feeling in just a few minutes and point you toward the right next step, including whether to see a clinician first.
Last reviewed for medical accuracy: 09/23/2026
Seasonal influenza (“the flu”) poses a higher risk to adults over 65. As we age, our immune systems weaken, making it harder to fight infections. Knowing when should you get a flu shot and which vaccine to choose can help ensure you’re as protected as possible.
Health authorities like the Centers for Disease Control and Prevention (CDC) recommend:
For those over 65, the CDC advises using one of the higher-dose or adjuvanted options:
Speak to your healthcare provider about which vaccine option is best for you.
Vaccination is the cornerstone of flu prevention, but you can add layers of protection:
Even with vaccination, you can still catch the flu or other respiratory infections. If you develop significant symptoms—high fever, difficulty breathing, chest pain, or confusion—seek medical attention immediately. For milder or early symptoms, you might start with a:
This tool can help you decide whether to manage symptoms at home or contact a healthcare provider.
Always consult a medical professional if you experience:
Your doctor knows your health history and can offer personalized advice or prescribe antiviral medications if needed.
Protecting yourself against the flu each year is crucial, especially if you’re over 65. Talk with your healthcare provider to plan the best timing and vaccine choice for your situation, and reach out promptly if you develop concerning symptoms. Always prioritize professional medical advice for any serious or life-threatening issues.
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* Kakoullis L, Steffen R, Osterhaus A, Goeijenbier M, Rao SR, Koiso S, Hyle EP, Ryan ET, LaRocque RC, Chen LH. Influenza: seasonality and travel-related considerations. J Travel Med. 2023 Sep 5;30(5). doi: 10.1093/jtm/taad102. PMID: 37535890; PMCID: PMC11758160.
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* Grohskopf LA, Ferdinands JM, Blanton LH, Broder KR, Loehr J. Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices - United States, 2024-25 Influenza Season. MMWR Recomm Rep. 2024 Aug 29;73(5):1-25. doi: 10.15585/mmwr.rr7305a1. Epub 2024 Aug 29. PMID: 39197095; PMCID: PMC11501009.
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