How do you compare a jet card or membership with on-demand charter?

Replay your actual trips through the proposed agreement. Do not choose using annual hours alone.

Step 1: Assemble the usage ledger

Collect the preceding 12–24 months of available records and a forward-looking travel plan. For each mission, record route, date, passengers, aircraft requirement, actual or estimated duration, booking notice, changes, cancellations and expenditure.

Separate recurring needs from exceptional trips. A programme should be tested against the flying you expect—not simply last year’s total spend.

Step 2: Request the complete current programme pack

Ask for:

• Agreement and product version.
• Price schedule and adjustment provisions.
• Service-area boundaries and exceptions.
• Standard and peak-day booking notice.
• Peak/blackout calendar and schedule-flexibility requirements.
• Segment/daily minimums and taxi-time treatment.
• Cancellation and change schedules.
• Aircraft interchange, upgrade and downgrade rules.
• Recovery obligations and exclusions.
• Expiry, rollover, refund, transfer and termination terms.
• Deposit custody arrangements and financial information available for diligence.

Step 3: Separate published pricing from usable access

Sentient’s SJ25 Light page currently publishes a USD 183,100 base price for 25 hours, equivalent to USD 7,324 per base hour, and expressly states that fuel surcharge and federal excise tax apply. That is a useful pricing anchor, not an all-in budget or a substitute for the agreement. (sentient.com)

Product version matters. Wheels Up’s FY2025 annual report, filed on 10 March 2026, states that new membership sales were limited to Signature Membership from January 2026. An older membership PDF should therefore not be treated as the offer available to a new buyer without confirmation. (s27.q4cdn.com)

Step 4: Replay each mission

Build this worksheet:

Illustration: 20 flights of 1.25 airborne hours total 25 flown hours. Under a hypothetical two-hour minimum per flight, they consume 40 billed hours before any other time additions. This is why a 25-hour travel pattern need not fit a 25-hour card.

Step 5: Stress-test utilisation and funding separately

Run at least these proposed scenarios:

• Base travel plan.
• 25% lower utilisation.
• More peak-date travel.
• More short-notice requests.
• Larger passenger groups requiring upgrades.
• Cancellation of the most expensive mission.
• Exit or provider non-performance before the balance is consumed.

Keep three financial measures separate:

1. Cash committed: money paid or contractually due.
2. Cost of travel consumed: charges attributable to completed flying and relevant fees.
3. Residual exposure: unused balances and other amounts whose recovery remains uncertain.

For a fictional USD 200,000 purchase covering 25 hours, using 20 hours leaves USD 40,000 of base value unused. Cash deployed per flown hour is USD 10,000, while the base rate for consumed hours remains USD 8,000. The unused amount is not automatically a loss: determine its refund, rollover and expiry treatment.

Step 6: Investigate prepaid-fund protection

Ask the provider and counsel:

• Who legally holds the funds?
• Are funds segregated, escrowed or available for general business use?
• What permits their release?
• Who is the escrow agent, if one is claimed?
• What happens on termination, non-performance or insolvency?
• Is a parent guarantee actually documented?
• Can you reduce the amount funded or fund in stages?

These are diligence questions, not assertions that all programmes use the same custody structure. Do not assign a probability of failure without evidence.

Decision standard: buy a programme only when its documented access, service or pricing characteristics justify its total commitment against your mission replay. A smaller commitment—or continued charter—may be the appropriate result.