Fly for Less
Semi-Private Flights: How Per-Seat Private Flying Works
How semi-private flying works: Part 380 public charter rules
Semi private flights sell individual seats on small jets that depart from private terminals on a published schedule. You get the private-terminal experience without buying the aircraft’s whole cabin. What you give up is control of the route and the departure time, and a layer of regulation that most passengers never think to ask about.
What “semi-private” actually describes
Semi-private is a commercial airline product operating under charter rules. The aircraft is typically a 30-seat regional jet. The terminal is a private FBO or a dedicated lounge. Boarding starts around 20 minutes before departure instead of an hour. The seat map is fixed, the timetable is published months ahead, and you fly with strangers.
Three features distinguish it from every other option on this hub:
- You buy a seat, not an aircraft. Pricing scales with passengers, so it is the only model that stays cheap for a solo traveler.
- The schedule is fixed. There is no negotiating a 7am departure into a 9am one.
- The route map is short. Operators fly the city pairs that fill 30 seats, not the ones you want.
The rule that makes semi-private possible: Part 380
Semi-private exists because of a regulatory structure called public charter, governed by the U.S. Department of Transportation under 14 CFR Part 380. The structure has two parties, and the split matters to you as a passenger.
- The public charter operator sells you the seat. It is an indirect air carrier. It does not own or fly the aircraft. It must file a charter prospectus with DOT before selling anything.
- The direct air carrier actually flies the aircraft. It holds an FAA air carrier certificate, usually under Part 135, the on-demand charter rules.
The public charter operator charters the whole aircraft from the direct air carrier, then resells the seats to the public. That is legal because Part 380 was written for exactly this arrangement, and because Part 135 permits scheduled-style flying when the aircraft has fewer than 30 passenger seats and a payload under 7,500 pounds. That seat limit is why every semi-private jet in the U.S. tops out at 30 seats. It is a regulatory ceiling, not a comfort choice.
Part 380 also carries a consumer protection that few passengers know about. Under section 380.34, the charter operator must post a surety bond or hold passenger payments in an escrow account at a depository bank, and claims must generally be filed within 60 days after the charter ends. Your money is supposed to be secured by someone other than the company holding your booking.
What Part 380 means at the airport
Flying a public charter changes the security and service rules you experience, not just the paperwork. Security is handled under a TSA-approved security program for charter operations rather than a standard commercial checkpoint, which is why semi-private terminals feel faster and why the screening you do get looks different. The TSA updated the security program requirements applying to Part 380 flights in January 2025.
The safety rules are also different from a mainline airline. A Part 121 airline flies under stricter crew rest, dispatch, and training requirements than a Part 135 operator. Part 135 is a real certificate with real oversight, and it is the same rulebook that covers the charter jets on the rest of this site. It is simply not identical to the rulebook behind a Delta or United flight, and anyone comparing a semi-private seat to a first-class ticket should know that is one of the differences.
Who flies this model today
Three operators account for most U.S. semi-private capacity, and one high-profile failure explains the risk in the category.
- JSX is the largest. It flies Embraer ERJ-135 and ERJ-145 jets configured to 30 seats in a 1-2 layout, out of bases including Burbank, Dallas Love Field, Las Vegas, Scottsdale, and Miami Opa-locka. Its flying is done by Delux Public Charter under a Part 135 certificate, with the seats sold under Part 380.
- Aero runs a smaller, more premium network out of Los Angeles to leisure destinations including Aspen, Sun Valley, Napa, Los Cabos, and Las Vegas, on ERJ-135 and Legacy 600 aircraft. Its flights in North America are operated by USAC Airways 695 LLC, with Aero acting as the indirect air carrier under Part 380.
- XO sells by-the-seat shared flights on business jets rather than regional jets, also arranged as public charters under Part 380.
The cautionary case is Set Jet. The Scottsdale membership operator sold seats across the Southwest at fares trade reporting put between roughly $750 and $1,550 per person. In February 2024 it stopped flying with no notice. Its planned merger with Revelstone Capital Acquisition Corp had already collapsed, and the SPAC liquidated its trust rather than complete the deal; the company’s chief executive then told reporters an investor had declined to fund a further commitment. Memberships and booked flights were cancelled, and press coverage at the time noted the company had not said how customers would recover money already paid. Set Jet was privately held and never filed financials, so the member and refund figures that circulate come from reporting rather than any audited disclosure. The lesson is not that semi-private is unsafe. It is that a prepaid balance with a venture-funded seat seller is an unsecured bet on that company’s funding, which is precisely the exposure the Part 380 escrow rule exists to limit. Prepay for the trip you are taking, not for a year of trips.
What semi-private costs, with the math
Semi-private fares generally run $200 to $800 one way, depending on route, aircraft, and how far ahead you book. JSX prices in two buckets: a cheaper fare that charges separately for seat assignment, changes, and pets, and a flexible fare that includes them and can reach roughly $499 on some routes. Its turboprop routes start lower, around $215 one way.
Compare that to chartering the same category of aircraft. A 30-seat regional jet is not a light jet, and nothing on the charter market prices a 30-seat cabin near $500 a head unless you are filling it. The relevant comparison is against the alternatives a real traveler has:
| Option | Cost for 1 traveler | Cost for 4 travelers | Departure control |
|---|---|---|---|
| Semi-private seat | $300 | $1,200 | Published timetable |
| Domestic first class | $450-$900 | $1,800-$3,600 | Airline timetable |
| Empty leg, light jet | $2,500-$3,500 | $2,500-$3,500 | None. Operator sets it. |
| Light jet charter | $5,500-$7,000 | $5,500-$7,000 | Full |
The pattern is clear and it is the single most useful thing to take from this page. Semi-private wins on price for one or two travelers. Whole-aircraft options win once you have four or more people, because their price does not move with headcount. The crossover usually sits between three and four passengers on a one-hour route.
The regulatory fight worth watching
Part 380 semi-private flying is under active regulatory review, and travelers should not assume the model is fixed in place. The FAA sought comment in 2023 on the public charter exception, announced in June 2024 that it intended to amend the definitions of scheduled, on-demand, and supplemental operations, and by the September 2025 regulatory agenda the effort had been reclassified as a long-term action with no near-term movement expected. Airline groups want public charters held to Part 121 standards. Charter operators argue the current rules already impose real oversight.
Nothing here should stop you buying a seat next month. It is a reason to be cautious about prepaying for a membership or a large credit balance, since a rule change to the seat limit or the operating standard would reshape route maps and pricing.
Where semi-private is the wrong answer
Semi-private fails for four traveler profiles, and recognizing yourself in this list saves a wasted search:
- Your city pair is not on the map. Operators fly maybe two dozen airports. Route coverage is the binding constraint, not price.
- You are traveling with a group of four or more. Per-seat pricing multiplies. A whole-aircraft option is often cheaper.
- You need to leave when you want. A fixed timetable is a fixed timetable. This is charter’s entire value proposition.
- You are carrying unusual baggage. Golf clubs, skis, and pets have per-item rules and fees on a 30-seat jet, and the hold is small.
If any of those apply, compare the full ranking of low-cost private options, or look at whether a jet card makes sense at your flying volume.
Frequently Asked Questions
Is semi-private flying the same as a private jet charter?
No. Semi-private sells individual seats on a published schedule under DOT public charter rules, so you fly with other passengers on the operator's route and timetable. A charter means you book the entire aircraft and set the route and departure time yourself. The shared experience is the airport and the aircraft size, not the control.
How much does a semi-private flight cost?
Semi-private seats generally cost $200 to $800 one way, with published fares on some routes starting around $215 and flexible fares reaching roughly $499. That puts them alongside or slightly below domestic first class on the routes they serve, and far below the $5,500 or more it would cost to charter a light jet on the same trip.
Do you go through TSA security for a semi-private flight?
You go through a security process, but not a standard commercial checkpoint. Public charter flights operate under a TSA-approved security program written for charter operations, which the TSA updated for Part 380 flights in January 2025. That is why semi-private terminals move faster, and it is a different program rather than an exemption.
What is the difference between Part 380 and Part 135?
Part 380 is a DOT rule governing who may sell seats on a chartered aircraft, and Part 135 is an FAA rule governing who may fly it. On a semi-private flight, the public charter operator sells you the seat under Part 380, and a separate certificated air carrier flies the aircraft under Part 135. The two-party structure is what makes per-seat private flying legal.
Is semi-private flying safe?
Semi-private flights are flown by FAA-certificated air carriers under Part 135, the same rules that govern on-demand charter. Those standards are not identical to the Part 121 rules that apply to mainline airlines, particularly on crew rest, dispatch, and training. The safety question is a real regulatory difference to understand, separate from the financial question of whether to prepay a seat seller.
The takeaway
Semi-private is the cheapest way for one or two people to fly out of a private terminal, and the route map decides whether it is available to you at all. Check the city pair first, price it against first class second, and only compare it to charter once you have counted your travelers.
If you are flying with a group, whole-aircraft pricing is usually the better math. See what that actually costs in our hourly rate breakdown by aircraft class, or browse every option on the fly private for less hub.
We update this guide as aircraft, program, and route pricing changes. Spotted something out of date? Tell us and we'll check it.