Cigna sells 2026 ACA marketplace plans in Colorado; Aetna does not. The right choice depends on your income, which doctors and hospitals you need in-network, and your prescription medications — not which carrier has the better logo.
2026 marketplace check, Colorado: Cigna – sells plans. Aetna – no plans. Source: Connect for Health Colorado’s 2026 insurer list.
Aetna (CVS Health) left the ACA individual marketplace in every state at the end of 2025, so there is no Aetna marketplace plan to buy in Colorado for 2026. Aetna still sells employer group coverage.
For a marketplace plan, the real comparison is Cigna against the other insurers selling in Colorado: Anthem Blue Cross Blue Shield, Denver Health Medical Plan, Kaiser Permanente, Rocky Mountain Health Plans and Select Health.
Looking for Cigna Global? That is Cigna’s international health insurance for people living or working abroad. It isn’t sold on Connect for Health Colorado and isn’t an ACA marketplace plan; this page is about Cigna’s U.S. plans.
| Cigna | Aetna | |
|---|---|---|
| 2026 marketplace plans in Colorado | Yes | No |
| Parent company | The Cigna Group | CVS Health |
| Plan type | National carrier with employer-market roots | National carrier with pharmacy integration |
| Known for | strong behavioral health coverage, international travel coverage, wellness programs | broad pharmacy integration through CVS, strong customer service scores |
| Watch for | marketplace ACA presence is selective; not available in all regions | No 2026 marketplace plans in Colorado |
Cigna vs Aetna in Colorado
In Colorado, marketplace plans are sold through Connect for Health Colorado; Cigna is on it for 2026 and Aetna is not. Plan availability, networks, and premiums vary significantly by county and ZIP code across Colorado — what is available in Denver and Colorado Springs is not necessarily available in smaller or rural parts of the state.
The most important thing to understand about comparing any two marketplace carriers: premium is not the same as cost. A plan with a lower monthly premium may have a higher deductible, narrower network, or worse formulary coverage for your medications — resulting in higher total annual spending than a plan that cost more per month.
About Cigna in Colorado
Cigna is primarily known for employer group plans; their marketplace ACA presence is a complement to their larger commercial business. In Colorado, Cigna markets ACA plans primarily to individuals and families purchasing coverage through the marketplace. Cigna's ACA marketplace footprint is more limited than their employer-market presence. Verify availability in your specific county before comparing.
Prescriptions: Cigna uses Express Scripts (subsidiary) for pharmacy benefits management. Check your specific drugs on their formulary.
Best for: Cigna in Colorado is generally best suited for buyers who value robust behavioral health and mental health coverage, or who travel internationally.
About Aetna in Colorado
Aetna is backed by CVS Health, which also operates prescription benefit management (Caremark) and retail pharmacy. Aetna (CVS Health) left the ACA individual marketplace in every state at the end of 2025, so there is no Aetna marketplace plan to buy in Colorado for 2026. Aetna still sells employer group coverage. Aetna's CVS Health integration gives members access to MinuteClinic locations for routine care.
Prescriptions: Aetna plans often feature preferred pricing for CVS pharmacy locations. Check if your prescriptions are on the Aetna formulary at an acceptable tier.
Best for: Not an option on the Colorado marketplace in 2026. Enter your ZIP code below and Daniel will compare the insurers that are.
How to Choose Between the Two
Only Cigna sells 2026 marketplace plans in Colorado, so compare it against the other insurers there rather than Aetna. Compare their after-subsidy premiums, network coverage for your specific doctors, and formulary coverage for your prescriptions before deciding.
If you qualify for ACA subsidies: Compare after-subsidy costs: the cheaper-looking plan before subsidies may not be cheapest after your premium tax credit is applied.
If you are paying full unsubsidized cost: At full unsubsidized cost, total annual cost (premium + expected out-of-pocket) determines value. Consider deductible, OOP max, and network breadth.
What to Check Before You Choose
Before selecting either plan, do these four checks using each carrier’s provider directory and formulary tool:
- Doctor check: Search for your primary care physician and any specialists you see regularly in each carrier’s Colorado provider directory. Networks can be narrow, and a doctor who is in-network with one carrier may not be with the other.
- Hospital check: Confirm the hospital you would go to for a planned procedure or emergency is in-network. Hospital network participation differs from physician network participation.
- Drug formulary check: Look up every prescription you take in the formulary for each plan you are considering. Note the tier and the cost-sharing for each. Small formulary differences can result in hundreds of dollars in annual cost difference.
- After-subsidy premium: If you qualify for a premium tax credit, enter your income and household size at Connect for Health Colorado to see the after-subsidy premium for each plan. The after-subsidy number is what you actually pay.
This state has expanded Medicaid. Buyers with income below approximately $21,600/year (single adult) may qualify for free Medicaid coverage instead of a marketplace plan.
An independent broker completes all four checks at no cost to you. Call (713) 575-9904 for a free Cigna vs Aetna comparison for your Colorado ZIP code.