What is the cheapest month to fly from Lisbon to Dulles?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Lisbon (LIS) to Dulles (IAD), with fares starting from $365.

What is the lowest current fare from LIS to IAD?

The lowest currently-listed fare from Lisbon (LIS) to Dulles (IAD) is $365 on 2026-10-13.

How long is the flight from Lisbon to Dulles?

Direct flights from LIS to IAD cover approximately 5,766 km (3,583 miles), with an estimated flight time of 6h 47m. Operating airlines: TP, UA.

Cheap flights from Lisbon to Dulles

Cheapest current fares: $365 in October 2026, 5,766 km direct flight in ~6h 47m.

Last updated August 9, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Lisbon (LIS) to Dulles (IAD). Refreshed daily.

Lisbon (LIS) → Dulles (IAD)

October 2026 $365
September 2026 $502

Frequently asked questions

What is the cheapest month to fly from Lisbon to Dulles?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Lisbon (LIS) to Dulles (IAD), with fares starting from $365.
What is the lowest current fare from LIS to IAD?

The lowest currently-listed fare from Lisbon (LIS) to Dulles (IAD) is $365 on 2026-10-13.
How long is the flight from Lisbon to Dulles?

Direct flights from LIS to IAD cover approximately 5,766 km (3,583 miles), with an estimated flight time of 6h 47m. Operating airlines: TP, UA.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.