Flu shot cost in St. Louis, MO
In St. Louis, MO-IL, 12 hospitals list a cash price for flu shot, standard dose, preservative-free, for age 6 months and older: from $13.65 to $89.17, with a median of $64.15. The lowest listed price is at Mercy Hospital St Louis — $50.50 less than the median here. Across Missouri, the median is $46.84 at 50 hospitals.
- The median here, $64.15, is 75% above the US median of $36.75.
- St. Louis, MO has the lowest median of 2 metro areas in Missouri with at least 10 hospitals pricing this code.
- 1 of 12 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 12 facilities across 11 cities for code 90656, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Jun 10, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Mercy Hospital St Louis lowest Saint Louis, MO · (314) 251-6000 Vfc Influenza Vaccine Trivalent Split 3+Yrs File of Jun 4, 2026 · source file | $13.65 | $21.00 | $87.00–$107.00 | 35% |
| Anderson Hospital Maryville, IL · (618) 288-5711 INFLUENZA VACC 0.5ML SYR File of Feb 6, 2026 · source file | $21.73 | $43.45 | $1.92–$39.11 | 50% |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 INFLUENZA VACC 0.5ML SYR File of Feb 9, 2026 · source file | $21.73 | $43.45 | $12.56–$39.54 | 50% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 Alfuria RHC File of Mar 21, 2026 · source file | $42.35 | $60.50 | $21.78–$86.43 | 30% |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 AMB Med Charge (Influenza) -> Q2039 flu vacc, 3 yrs + >, im, nos File of Mar 10, 2026 · source file | $45.00 | $45.00 | $29.12–$82.00 | — |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 19515-0904-52 - influenza virus vaccine, inactivated preservative-free trivalent Sus+1 more line at this price File of Mar 10, 2026 · source file | $45.39 | $45.39 | $29.37–$38.58 | — |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 AFLURIA (INFLUENZA) VACCINE 0.5ML PFS File of Mar 21, 2026 · source file | $48.34 | $69.05 | $24.86–$98.64 | 30% |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 AMB Med Charge (Influenza) -> Q2036 flulaval 3 yrs = > im+1 more line at this price File of Mar 10, 2026 · source file | $49.00 | $49.00 | $31.70–$82.00 | — |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 Fluzone RHC File of Mar 21, 2026 · source file | $51.45 | $73.50 | $26.46–$105.00 | 30% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 FLUZONE (INFLUENZA) VACCINE 0.5ML PFS* File of Mar 21, 2026 · source file | $53.90 | $77.00 | $27.72–$110.00 | 30% |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 FLU VACCINE TRIV 2025-26 (6MOS UP)(PF) 45 MCG(15MCG X3)/0.5 ML IM SYRINGE File of Jun 4, 2026 · source file | $54.53 | $83.90 | $5.45–$83.90 | 35% |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 FLU VACCINE TRIV 2025-26 (6MOS UP)(PF) 45 MCG(15MCG X3)/0.5 ML IM SYRINGE File of Jun 10, 2026 · source file | $64.15 | $98.70 | $29.95 | 35% |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 FLU VACCINE TRIV 2025-26 (6MOS UP)(PF) 45 MCG(15MCG X3)/0.5 ML IM SYRINGE File of Jun 10, 2026 · source file | $64.15 | $98.70 | $31.09 | 35% |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 INFLUENZA VACCINE 0.5 ML SUSY per 0.5 mL File of Mar 24, 2026 · source file | $71.75 | $99.65 | $17.94–$99.65 | 28% |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 INFLUENZA VACCINE 0.5 ML SUSY per 0.5 mL File of Mar 24, 2026 · source file | $71.75 | $99.65 | $19.93–$99.65 | 28% |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL · (618) 234-2120 INFLUENZA VACCINE 0.5 ML SUSY per 0.5 mL File of Mar 24, 2026 · source file | $71.75 | $99.65 | $16.94–$99.65 | 28% |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 INFLUENZA VACCINE 0.5 ML SUSY per 0.5 mL File of Mar 24, 2026 · source file | $72.00 | $100.00 | $19.34–$100.00 | 28% |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 FLU VACCINE TRIV 2025-26 (6MOS UP)(PF) 45 MCG(15MCG X3)/0.5 ML IM SYRINGE File of Jun 10, 2026 · source file | $89.17 | $137.19 | $8.92–$137.19 | 35% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 FLU VACCINE 10 SYRINGES/BX File of Mar 21, 2026 · source file | $185.50 | $265.00 | $95.40–$378.57 | 30% |
Outpatient: lowest $13.65, median $64.15, highest $89.17 — a 6.5× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $58.38. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 10 of 12 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What flu shot is, what the price covers and why prices differ: Flu shot explained.