AirHint found the following cheapest return flights from Washington (DCA) to Singapore (SIN) in April 2026 (see full year).
Return flights
| 14 Apr - 23 Apr | Air Canada | ||
| 30 Apr - 07 May | Frontier Airlines | ||
| 20 Apr - 29 Apr | Cathay Pacific | ||
| 14 Apr - 20 Apr | Frontier Airlines | ||
| 30 Apr - 09 May | Cathay Pacific |
Also check the deals for one-way flights from Washington to Singapore in April.
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