AirHint found the following cheapest one-way flights from Houston (IAH) to Singapore (SIN) in December 2025 (see full year).
One-Way flights
| 07 Dec | Spirit Airlines | ||
| 08 Dec | Spirit Airlines | ||
| 09 Dec | Frontier Airlines | ||
| 30 Dec | IndiGo | ||
| 14 Dec | Frontier Airlines | ||
| 22 Dec | Frontier Airlines | ||
| 13 Dec | United | ||
| 12 Dec | Qatar Airways | ||
| 19 Dec | IndiGo |
Also check the deals for return flights from Houston to Singapore in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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