Terrance B. Lettsome (EIS) – Luis Munoz Marin (SJU)
From Sep 2, 2026 to Oct 10, 2026 we saw 501 flights between Terrance B. Lettsome and Luis Munoz Marin on public flight boards. This is a sample, not a full count.
These flights come from public flight boards that we read on a rotating schedule, so some days are missing. The totals undercount the route. Use them to see which airlines fly it, not how many flights there are.
By direction
EIS → SJU
- Recorded departures
- 329
SJU → EIS
- Recorded departures
- 315
EIS → SJU and SJU → EIS counted separately.
Airlines on this route
Sep 2, 2026 – Oct 10, 2026| Airline | Scheduled flights | Share |
|---|---|---|
| Cape Air 9K | 289 | 44.9% |
| Interisland Airways Limited JY | 199 | 30.9% |
| Flygtransporter I Nykoping ETS | 64 | 9.9% |
| Federal Express FX | 51 | 7.9% |
| Other airlines (each under 5%) | 41 | 6.4% |
Counted from flight boards. Codeshares are merged into one flight; airlines under 5% of flights are grouped, because airline codes on flight boards are sometimes reused by another carrier.
Flight numbers on this route
9| Flight numbers | By direction | Departures | On time |
|---|---|---|---|
| JY510 | EIS → SJU | 41 | 48.2% |
| 9K9K4541 | EIS → SJU | 39 | 90.6% |
| ETS2Q601 | EIS → SJU | 38 | 24.0% |
| JY511 | SJU → EIS | 38 | |
| JY512 | EIS → SJU | 38 | 58.8% |
| 9K9K4551 | SJU → EIS | 33 | |
| 9K9K4801 | EIS → SJU | 33 | 73.3% |
| 9K9K4811 | SJU → EIS | 33 | |
| JY509 | SJU → EIS | 33 |
Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.