Launching in 2018, Symphony of the Seas will incorporate the flashy and fun upgrades of its Oasis-class sister ships, with added bonuses like laser tag, a full Broadway-esque production of "Hairspray," and multiple FlowRider surf simulators to cut down on queueing.
| Cruise Line | Royal Caribbean |
| Builder | STX France (France) |
| Entered Service | 2018 |
| Registry | Bahamas |
| Length (ft) | 362 |
| Beam (ft) | 60.5 |
| Draft (ft) | 8.5 |
| Tonnage | 228081 |
| Cruise Style | Standard |
| Size | Large |
| Passenger Decks | 16 |
| Cabins | 2759 |
| Total Crew | 2200 |
| Max. Passengers | 5503 |
| Passenger/Crew Ratio | 1 : 0.4 (#204 of 333) |
| Passenger/Space Ratio | 1 : 41.4 (#105 of 226) |