AirHint found the following cheapest return flights from Oakland (OAK) to Warsaw (WAW) in December 2025 (see full year).
Return flights
| 29 Dec - 09 Jan | British Airways | ||
| 25 Dec - 31 Dec | British Airways | ||
| 25 Dec - 30 Dec | British Airways | ||
| 30 Dec - 06 Jan | British Airways | ||
| 25 Dec - 02 Jan | British Airways |
Also check the deals for one-way flights from Oakland to Warsaw in December.
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