AirHint found the following cheapest return flights from Washington (IAD) to Lagos (LOS) in September 2026 (see full year).
Return flights
| 28 Sep - 12 Oct | Royal Air Maroc | ||
| 08 Sep - 25 Sep | KLM | ||
| 08 Sep - 31 Oct | Delta | ||
| 05 Sep - 25 Sep | Delta | ||
| 05 Sep - 25 Sep | United | direct | |
| 08 Sep - 25 Sep | United | direct |
Also check the deals for one-way flights from Washington to Lagos in September.
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