Guide
Charter Certificate of Insurance and Additional Insured
Guide · Researched and reviewed by Flight Ops HQ editorial team. Last reviewed June 2026. How we create content.
Flight Ops HQ is not a Part 135 operator, broker, or aircraft seller. We publish planning estimates and charter-buyer literacy—not quotes or operational advice.
Short answer
A certificate of insurance (COI) is a summary document from the operator's insurer naming coverage limits and dates. Corporate travel policies often require the company as additional insured on the operator's liability policy before approving a trip. Leisure travelers should still verify Part 135 certificate holder identity separately; a COI does not replace operator verification.
Detail
The fuller picture
Charter insurance for passengers guide covers baseline liability concepts. This guide focuses on the paperwork workflow corporate travel managers, executive assistants, and family offices use before approving a wire: requesting a COI, naming additional insured parties, and understanding what the PDF does and does not prove.
A certificate of insurance is not the insurance policy. It is a snapshot issued by the broker or insurer summarizing coverage types, limits, and effective dates for a specific operator. Risk teams use COIs to confirm minimum liability limits exist before the company reimburses travel or hosts clients on board.
Additional insured status means your organization is named on the operator's policy for certain liabilities arising from the trip, within policy terms. It is a contract between insurer and operator, not a gift to passengers. Your legal team defines what wording they need; your broker cannot invent additional insured language the operator's insurer will not endorse.
Part 135 certificate holder identity still matters independently. The COI should name the same operating entity that appears on your charter contract. If the broker brand differs from the certificate holder, the COI must trace to the operator flying the trip, not only the broker's marketing LLC.
Timing is where deals stall. Operators can often produce COIs within a few business days when insurance is in force. Last-minute charters with forty-eight-hour departure may not clear corporate approval if COI and additional insured endorsements lag. Build insurance lead time into booking like you build permit lead time on international trips.
Limits are not universal. Policies show per-occurrence and aggregate liability figures. Your company may require higher limits for board travel than for a family reunion. If limits are insufficient, the options are a different operator, a supplemental policy your company buys, or accepting uncovered risk explicitly.
Additional insured requests vary by operator appetite. Some operators accommodate standard Fortune 500 wording routinely. Others refuse endorsements close to departure or charge administrative fees. Refusal is a business decision, not proof the operator is uninsured.
Wet lease and dry lease structures complicate COI requests. If your contract uses lease language, ask which entity's policy responds and who can name your company additional insured. Lease chains without a clear Part 135 operator of record stall corporate approval.
COIs do not certify airworthiness, crew qualifications, or route legality. They document insurance. You still verify tail number, operator certificate, and international permits separately.
Named insured versus additional insured: the operator is the named insured on its aviation policy. Your company wants additional insured status for defense and indemnity in some third-party claims scenarios. Passengers personally rarely need additional insured status unless their family office or employer policy requires it.
Certificate holder is often just the recipient of the COI email, not additional insured. Do not confuse certificate holder on the insurance form with FAA Part 135 certificate holder on the operating certificate. Vocabulary collision confuses non-aviation legal teams.
Broker COIs sometimes list the broker as intermediary. The operator's insurer should still show the operating company and aircraft liability limits. If the COI only names the broker without operator policy detail, request an operator-issued certificate.
International trips may trigger higher limits or war-risk questions on corporate policies. COI requests for transatlantic legs should note routing so insurers do not issue domestic-only summaries.
Cancellation does not erase insurance questions. If the operator cancels and substitutes another carrier, your COI and additional insured endorsement must be refreshed for the replacement operator before your company approves the new tail.
Family travelers without corporate policy may still request a COI for peace of mind. It is reasonable to ask for proof of liability coverage before deposit. It is also reasonable for operators to decline bespoke endorsements for a one-off leisure trip.
Do not treat a COI as a warranty of zero risk. Insurance responds after an incident under policy terms. Contract cancellation, weather, and duty delays are operational issues outside insurance certificates.
Charter quote red flags include operators who refuse any insurance documentation before deposit while pressuring wire today. Legitimate operators provide COIs routinely for corporate clients.
Document the COI version you approved. Save the PDF with effective dates matching your trip window. If departure slips a month, request an updated certificate showing coverage still in force.
Additional insured endorsements may take longer than the COI itself. Start both requests when you approve the quote, not the morning of departure.
Compare operators on insurance readiness when quotes are otherwise similar. A slightly higher hourly rate with smooth COI turnaround may beat a discount operator your risk team will never approve.
Charter insurance and liability for passengers guide pairs for coverage concepts. Broker versus operator guide pairs for who should send the COI.
Finally, passengers without corporate policy should still verify Part 135 operator identity and tail before deposit. A COI helps; it does not replace reading the contract.
Part 135 charter explained guide sets baseline operator expectations. Certificate holder glossary defines FAA operating authority separate from insurance certificate holder wording on forms.
If your legal team asks for indemnity language in the charter contract beyond insurance, that is a contract negotiation, not an insurer form. Keep insurance requests and contract indemnity requests aligned but separate.
Event-week and transatlantic trips stack paperwork: COI, additional insured, overflight permits, and passenger manifests. Assign one internal owner so nothing slips between assistant, broker, and risk team inboxes.
Renewal windows matter for operators with annual policy cycles. A COI valid for your trip dates should show the policy period clearly. If your departure sits near policy renewal, ask whether coverage continuity is confirmed in writing.
Subrogation and waiver language in charter contracts interacts with insurance but is not the COI itself. Legal teams sometimes request mutual waiver of subrogation in addition to additional insured status. Treat those as parallel tracks with different turnaround times.
Cost
Cost implications
- Administrative fees for late additional insured endorsements may appear on invoices.
- Choosing a higher-limit operator may cost more hourly but clears corporate approval faster.
- Trip delays past COI expiration dates trigger re-approval cycles and possible ground holds.
- Substitution to a new operator resets insurance paperwork and may delay departure.
When it matters
When this is worth your attention
Corporate board travel, client entertainment flights, family office bookings, university athletic travel, and any organization whose accounts payable requires insurance documentation before wire.
Pitfalls
Mistakes to avoid
- Confusing insurance certificate holder with FAA Part 135 certificate holder.
- Assuming a COI replaces operator and tail verification.
- Requesting additional insured endorsements hours before departure on a corporate trip.
- Approving a substituted tail without an updated COI from the new operator.
Calculators that help here
Routes and glossary
- Charter Insurance and Liability: What Passengers Should KnowWhat Part 135 operator insurance covers on charter flights, when to request a certificate of insurance, and why gray-market trips carry different risk.
- Broker vs Operator: Who Are You Actually Hiring?Charter broker vs Part 135 operator: who holds the certificate, who you pay, wire safety, substitution clauses, and what to verify before deposit.
- Part 135 Charter Explained for BuyersWhat Part 135 means for charter buyers, how it differs from Part 91, and how to verify the operator before deposit.
- Private Jet Quote Checklist: What to Confirm Before You BookA practical checklist for reading a private charter quote: aircraft, all-in pricing, taxes, repositioning, airports, crew, weather, cancellation, international handling, and operator credentials.
- Certificate HolderWhat a certificate holder is on a charter flight, how it differs from broker branding, and how passengers verify operator identity before deposit.
- Part 135What part 135 means in private aviation and how it affects cost.
- Wet LeaseWhat a wet lease is, how it differs from Part 135 charter for passengers, and why lease language on a quote is a verification signal.
Common questions
What is a certificate of insurance on a charter flight?
A summary document from the operator's insurer showing liability coverage types, limits, and dates. It helps risk teams confirm insurance exists before approving travel.
What does additional insured mean?
Your organization may be named on the operator's policy for certain liabilities per policy terms. Wording must be acceptable to the operator's insurer.
Who should provide the COI?
The Part 135 operator's insurance broker or the operator directly. If a broker sends it, confirm it reflects the operating company's policy.
Does a COI guarantee my trip is safe?
No. It documents insurance coverage. Operational safety still depends on operator maintenance, crew, and your verification steps.
Methodology
How this guide was built
Written for charter buyers and trip planners. We avoid invented prices; cost statements stay qualitative or tied to on-page calculators.
Figures mentioned here are planning logic or qualitative ranges—not quotes from operators. When a topic touches cost, use the linked calculators on this page for bracket estimates.
Drafting may use AI-assisted tools. A human reviews every page before publish: airport codes, distances, regulatory references, and the rule that estimates are not quotes.
Full policy: editorial policy. Corrections welcome via contact.
Reference points
- 14 CFR Part 135 (eCFR)
Federal operating rules for on-demand charter and commuter operations in the United States.
- FAA
U.S. aviation safety, certification, and operator oversight relevant to private and charter flying.
- NBAA (National Business Aviation Association)
Industry context on business aviation operations, access models, and planning.
- IRS Form 720 (excise tax filings)
How federal excise taxes on transportation are reported; many domestic charters include FET on the invoice.
- FAA airport operations
How airports are run; landing, ramp, and FBO handling fees are set locally, not by this site.
Last reviewed June 2026. Pricing assumptions are broad planning ranges and should be confirmed with a licensed operator or broker.
Related guides
- Charter Insurance and Liability: What Passengers Should KnowWhat Part 135 operator insurance covers on charter flights, when to request a certificate of insurance, and why gray-market trips carry different risk.
- Broker vs Operator: Who Are You Actually Hiring?Charter broker vs Part 135 operator: who holds the certificate, who you pay, wire safety, substitution clauses, and what to verify before deposit.
- Part 135 Charter Explained for BuyersWhat Part 135 means for charter buyers, how it differs from Part 91, and how to verify the operator before deposit.
- Wet Lease vs Dry Lease: What Charter Passengers Should KnowHow wet and dry lease structures differ from Part 135 charter, why lease language on a quote is a red flag, and what to verify before deposit.
- Private Jet Quote Checklist: What to Confirm Before You BookA practical checklist for reading a private charter quote: aircraft, all-in pricing, taxes, repositioning, airports, crew, weather, cancellation, international handling, and operator credentials.
- Charter Quote Red Flags: Read a Proposal Like an OperatorOperator and broker literacy for $15k–$80k trips: Part 135, ARGUS and Wyvern, FET, segment fees, repositioning, minimum hours, duty time, de-icing, airport pairs, category mistakes, and quote red flags.
Last reviewed June 2026. Estimates use planning assumptions that we revisit periodically.
