AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Sydney (SYD) in December 2025 (see full year).
Return flights
| 04 Dec - 07 Dec | Frontier Airlines | ||
| 31 Dec - 07 Jan | Frontier Airlines | ||
| 15 Dec - 27 Dec | Frontier Airlines | ||
| 22 Dec - 01 Jan | United | ||
| 19 Dec - 06 Jan | Frontier Airlines |
Also check the deals for one-way flights from Raleigh-durham to Sydney in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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