AirHint found the following cheapest return flights from Seattle (SEA) to Shanghai (PVG) in December 2026 (see full year).
Return flights
| 27 Dec - 07 Jan | Korean Air | ||
| 11 Dec - 19 Dec | Turkish Airlines | ||
| 27 Dec - 07 Jan | Delta | direct | |
| 18 Dec - 24 Dec | Korean Air | ||
| 24 Dec - 03 Jan | British Airways | ||
| 11 Dec - 19 Dec | Delta | direct |
Also check the deals for one-way flights from Seattle to Shanghai in December.
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