AirHint found the following cheapest return flights from Chicago (ORD) to Singapore (SIN) in May 2026 (see full year).
Return flights
| 15 May - 20 May | United | ||
| 15 May - 22 May | United | ||
| 13 May - 28 May | Cathay Pacific | ||
| 26 May - 23 Jun | Etihad Airways | ||
| 19 May - 23 May | Air Canada |
Also check the deals for one-way flights from Chicago to Singapore in May.
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