Information checked: September 9, 2026.
For most people who need one influenza vaccine dose for the 2026-2027 season, September or October is the preferred time. Vaccination should continue after October while flu viruses are circulating and unexpired vaccine remains available.
Some children should begin earlier because they need two doses at least four weeks apart. Pregnancy stage, age, medical conditions, and the chance of returning later can also affect timing.
Key answer: CDC says everyone age 6 months and older should receive a seasonal flu vaccine, with rare exceptions. Most one-dose recipients should aim for September or October, ideally by the end of October. Children who need two doses should receive the first as soon as vaccine is available so the second can be given at least four weeks later.
Table of contents
- Best timing for most people
- Who may need earlier vaccination
- Age and vaccine selection
- How much the flu shot costs
- Where to get vaccinated
- Frequently asked questions
Best timing for most people
CDC's 2026-2027 interim clinical considerations advise September or October for most people who need one dose. July or August is generally too early for most adults because protection can decrease over the season, particularly among adults age 65 and older.
Being late is not a reason to skip vaccination. Providers should continue offering flu vaccine after October throughout the season while influenza viruses are circulating and vaccine is available.
Who may need earlier vaccination
Some children age 6 months through 8 years need two doses. Their first dose should be given as soon as vaccine is available so the second can be administered at least four weeks later, ideally by the end of October.
July or August vaccination can be considered for a person who is unlikely to return later. It can also be considered for children who need one dose and for pregnant women in the third trimester during those months. Pregnant women in the first or second trimester generally should wait until September or October unless later vaccination may not be possible.
Age and vaccine selection
Use a vaccine licensed for the recipient's age and health situation. For people age 65 and older, CDC gives preference to certain higher-dose, recombinant, or adjuvanted vaccines when available. If none is available at the visit, another age-appropriate flu vaccine can still be used rather than missing the opportunity.
The 2026-2027 U.S. flu vaccines are trivalent, designed to protect against three influenza viruses. A healthcare professional should review prior severe allergic reactions and other contraindications or precautions.
How much the flu shot costs
Most health plans cover recommended preventive vaccination without cost sharing when plan requirements, including network rules, are met. Coverage can vary, so confirm that the pharmacy or provider is in network and ask whether an office or administration fee applies.
Medicare Part B covers the seasonal flu vaccine, and the beneficiary pays nothing when the provider accepts assignment. Eligible children through age 18 can receive no-cost vaccines through the Vaccines for Children program if they are Medicaid-eligible, uninsured, underinsured under program rules, or American Indian or Alaska Native.
Uninsured adults can ask local health departments, HRSA-supported health centers, pharmacies, employers, schools, or community organizations about no-cost or low-cost clinics. Do not use the CDC contract price list as a promise of the retail price charged to a patient.
Where to get vaccinated
- Check a primary-care office or pediatrician.
- Ask an in-network pharmacy about age limits and appointments.
- Contact the local health department for community clinics.
- Use an HRSA-supported health center if cost is a barrier.
- For a child who may qualify for VFC, ask whether the provider participates.
Bring the insurance card and vaccination record when available. Ask the provider to document the product and date, especially when a child may need a second dose.
Frequently asked questions
Is November too late?
No. CDC advises continuing vaccination throughout the flu season while viruses are circulating and vaccine is available.
Should adults get a second flu shot later?
Routine revaccination during the same season is not recommended for a person already fully vaccinated for that season.
Can a pregnant person get a flu vaccine?
Yes. CDC states that an inactivated or recombinant flu vaccine can be given during any trimester; the nasal spray vaccine is not used during pregnancy.
Is every flu shot free?
No. Many plans cover it at no cost under applicable conditions, but network, provider, and coverage details matter. Confirm before the visit.
Related guides
- Health Insurance Open Enrollment 2027: Deadlines and Coverage Start Dates
- Health Insurance Deductible Reset 2027: What Happens to Claims in January
Final checklist
For most one-dose recipients, schedule during September or October. Start earlier for a child who needs two doses, and do not skip vaccination merely because October has passed. Confirm age-appropriate product selection and cost with the provider or insurer.