AirHint found the following cheapest one-way flights from Washington (DCA) to Lisbon (LIS) in October 2026 (see full year).
One-Way flights
| 16 Oct | jetBlue | ||
| 13 Oct | United | ||
| 05 Oct | Icelandair | ||
| 07 Oct | Icelandair | ||
| 12 Oct | Icelandair | ||
| 03 Oct | Icelandair | ||
| 10 Oct | Icelandair | ||
| 04 Oct | United | ||
| 06 Oct | United | ||
| 11 Oct | United |
Also check the deals for return flights from Washington to Lisbon in October.
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