JSX Seat Selection Guide: ERJ-145, ERJ-135 and ATR 42-600 (2026)
✈️ Quick Verdict
Aircraft: Embraer ERJ-145 and ERJ-135 jets, and the ATR 42-600 turboprop. All three have 30 seats in one cabin.
Layouts: ERJ-145 1-1 (A | C), rows 1–16 · ERJ-135 1-2 (A | B C), rows 1–10 · ATR 42-600 1-2 (A | B C), rows 1–10. No middle seat on any of them.
Version lottery: Yes, by aircraft type. The same route can be flown by more than one type, so check the aircraft on your booking.
Best seats: ERJ-145 4C–8C · ERJ-135 4A (single), 4B + 4C (pair) · ATR 1A, 4A, 7A (singles), 4B + 4C or 7B + 7C (pair)
Seats to avoid: ERJ-145 16A, 16C and 1A · ERJ-135 row 10, and 8A, 9A, 9C for views
Lavatory: one per aircraft, at the back · Wi-Fi: Starlink recorded on all three · Seatback screens: none
The catch: whether you get a single seat depends on the aircraft
JSX sells every seat the same way, but it flies three different cabins. On the ERJ-145 every one of the 30 seats is a single: one seat on each side of the aisle, so nobody sits beside you. On the ERJ-135 and the ATR 42-600, only seat A on the left is a single. The B and C seats on the right are a pair, so a solo traveller in C has a stranger in B between them and the aisle.
So the rule of thumb flips with the aircraft. On the ERJ-135 and ATR, a solo traveller wants an A seat and a couple wants B and C. On the ERJ-145, every seat is already a single, and the choice is about which side, which row and what is outside the window.
Each aircraft also has one seat that looks better on the map than it is. On the ERJ-145 it is 1A, the front-row seat, which faces an almost full-width wall. On the ERJ-135 it is the back row, which backs onto the only lavatory. On the ATR it is row 1: the most legroom, but you board at the back, so it is the last row off.
Embraer ERJ-145 (30 seats, 1-1)
Sixteen rows, one seat each side of the aisle. Rows 1 and 2 have only an A seat; the right-hand side starts at 3C, with no seat in front of it. On the right, the C seats sit at the window with the space where a middle seat would be beside them, fitted with a side table, so there is a gap between you and the aisle. On the left, the A seats sit at the window and directly on the aisle.
Row 11 is the overwing exit row and has clearly more space to the row ahead than any other row. It also sits over the wing, and the window there falls between two panes. Exit-row seats come with the usual condition that you are willing and able to help in an evacuation.
The wing runs past rows 9 to 13, and in rows 9, 10 and 13 it blocks much of the view down. In 2A, 11A, 11C, 12A and 12C the window sits between two panes rather than level with the seat. No seat is without a window.
Best seats
- 4C, 5C, 6C, 7C, 8C — right-hand singles ahead of the wing, with the side-table space between you and the aisle traffic.
- 3A to 8A — the same clear view ahead of the wing, sitting directly on the aisle.
- 11A, 11C — the most legroom on the aircraft. You trade it for a wing view and a window between two panes.
- 14A, 14C, 15A, 15C — clear of the wing, and two rows ahead of the lavatory.
Seats to avoid
- 16A, 16C — the last row, with the only lavatory directly behind.
- 1A — a wall in front instead of a seat. There is nothing to stretch your feet under and no underseat storage.
- 9A, 9C, 10A, 10C, 13A, 13C — fine seats, but the wing blocks the view down.
Embraer ERJ-135 (30 seats, 1-2)
Ten rows of three: the single A seat on the left, the B (aisle) and C (window) pair on the right. The rows are evenly spaced from front to back, and further apart than on the ERJ-145. That is the trade for the pairs: more space per row, but only ten single seats.
The overwing exits sit between rows 6 and 7. Neither row has extra legroom or a recline restriction recorded. Row 1 has no seat in front, and 1B and 1C face a wall, so the front row gives up its underseat storage.
The windows line up best in rows 4 and 10. In 2A, 2C, 6A, 6C, 7A, 7C and 8C the window sits between two panes. The wing blocks the view down from 8A, 9A and 9C.
Best seats
- 4A — a single, with the best-aligned window in the cabin and ahead of the wing.
- 3A, 5A — singles ahead of the wing, with a clear view.
- 4B + 4C — the pair for a couple, with the best-aligned window on the right.
Seats to avoid
- 10A, 10B, 10C — the last row, with the only lavatory directly behind. 10A has a well-aligned window, but the lavatory decides it.
- 8A, 9A, 9C — the wing blocks the view down.
- B seats if you are travelling alone — you are half of a pair, with a stranger at the window.
ATR 42-600 (30 seats, 1-2, turboprop)
Ten rows of three, laid out like the ERJ-135: the single A seat on the left, with a side table beside it, and the B and C pair on the right. Every row is full and evenly spaced. The difference is the doors. You board the ATR through the rear door, behind row 10, so row 10 is first off and row 1 is last.
Row 1 has the most legroom on the aircraft. Walls stand in front of both sides, and 1B gets a partial wall with extra room on its aisle side. The forward emergency exits sit just ahead of the row. The catch is the walk: on a short flight, the front row is the longest wait to get off.
The ATR is a high-wing aircraft, so the wing sits above the cabin and no row looks out over it. The windows line up best in rows 1, 4, 7 and 10, and every seat has one. The propellers turn beside the forward part of the cabin, so the front rows hear more of them. The only lavatory is at the very back, behind row 10 and the rear door.
Best seats
- 1A — a single with the most legroom and the window in line with the seat. Last off.
- 4A, 7A — singles with the window in line with the seat.
- 4B + 4C or 7B + 7C — the pairs with the best-aligned window.
- Row 9 — quick off through the rear door, one row clear of the lavatory.
Think twice
- Row 1 if you have a connection or a car waiting — it is the last row off, and the front row has no underseat storage.
- Row 10 — first off, but the lavatory and the boarding door are right behind you.
Things to know before you choose
- Check the aircraft type. The single-seat advice is different on the ERJ-145. A 16-row seat map with one seat each side is the ERJ-145; ten rows of three is the ERJ-135 or the ATR.
- The ATR is slower. On Burbank to Las Vegas, where JSX flies both, the ATR is scheduled about ten minutes longer than the jet.
- No screens. Nothing is fitted to the seat. Starlink Wi-Fi is recorded on all three aircraft, so bring your own device.
The three aircraft side by side
| Feature | ERJ-145 | ERJ-135 | ATR 42-600 |
|---|---|---|---|
| Seats | 30 | 30 | 30 |
| Layout | 1-1 (A | C) | 1-2 (A | B C) | 1-2 (A | B C) |
| Rows | 1–16 (rows 1–2 seat A only) | 1–10 | 1–10 |
| Single seats | All 30 | 10 (the A seats) | 10 (the A seats) |
| Most legroom | Row 11 (exit row) | None recorded above the rest | Row 1 |
| Space between rows | Tighter than the ERJ-135 | The widest of the three | Close to the ERJ-145 |
| Wing | Rows 9–13 | Rows 8–9 views blocked | Above the cabin |
| Boarding door | Front left | Front left | Rear left, behind row 10 |
| Lavatory | One, behind row 16 | One, behind row 10 | One, at the rear |
| Windowless seats | None | None | None |
Quick-pick summary
| Travelling as | ERJ-145 | ERJ-135 | ATR 42-600 |
|---|---|---|---|
| Solo, view | 4C–8C | 4A | 4A, 7A |
| Couple | A and C across the aisle, rows 3–8 | 4B + 4C | 4B + 4C, 7B + 7C |
| Legroom | 11A, 11C | No standout row | 1A, 1B, 1C |
| First off | Rows 3–5 | Rows 1–3 | Row 9 |
| Avoid | 16A, 16C, 1A | Row 10 | Row 1 if you are in a hurry |
Frequently asked questions
Does JSX have middle seats?
No. The ERJ-145 is one seat each side of the aisle. The ERJ-135 and ATR 42-600 put a single seat on the left and a pair on the right, so the most you share with is one neighbour.
Which JSX seats are single seats?
Every seat on the ERJ-145. On the ERJ-135 and the ATR 42-600, only the A seats on the left, one per row, ten in all.
Which JSX seat has the most legroom?
On the ERJ-145, row 11, the overwing exit row: 11A and 11C. On the ATR 42-600, row 1. On the ERJ-135, no row stands out; the rows are evenly spaced, and further apart than on the other two.
Is the front row worth it on JSX?
Not on the ERJ-145, where 1A faces an almost full-width wall with nothing to stretch your feet under and no underseat storage. On the ATR, row 1 has real legroom, but you board at the back, so it is the last row off.
Which JSX routes use the ATR 42-600?
At the time of writing, mainly flights from Santa Monica, including Las Vegas, Oakland, Napa and Scottsdale, plus one daily Burbank–Las Vegas flight. Schedules change, so check the aircraft type on your booking.
Does JSX have Wi-Fi?
Starlink Wi-Fi is recorded on all three aircraft. There are no seatback screens.
Comparable guides
- American Airlines Embraer 145 — the same jet in a 50-seat 1-2 airline layout
- United Airlines Embraer 145 — another 50-seat ERJ-145, for comparison with JSX’s 30
- Caribbean Airlines ATR 72-600 — the larger ATR, also boarded from the rear
- Air New Zealand ATR 72-600 — a 68-seat ATR 72 in a 2-2 layout
- Porter Airlines Dash 8-400 — the other regional turboprop, with a front boarding door