AirHint found the following cheapest return flights from Washington (DCA) to Colombo (CMB) in December 2025 (see full year).
Return flights
| 01 Dec - 08 Dec | Qatar Airways | ||
| 07 Dec - 21 Jan | Qatar Airways | ||
| 10 Dec - 05 Jan | Qatar Airways | ||
| 28 Dec - 06 Jan | Cathay Pacific | ||
| 27 Dec - 02 Jan | Qatar Airways |
Also check the deals for one-way flights from Washington to Colombo in December.
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