Iberia has announced plans to relaunch flights between Madrid and Washington DC.

The route will commence on May 1, and will operate five times weekly using an A330-300 aircraft configured for 292 passengers – 29 in business class, 21 in premium economy and 242 in economy.

Flights will depart Madrid at 1550, landing into Washington Dulles at 1855, before leaving the US airport at 2030 and landing back into the Spanish capital at 1015 the following day.

The carrier last served the route back in 2010, when it was axed in favour of flights to Los Angeles. Iberia currently operates nonstop US services to New York, Chicago, Miami, Los Angeles and San Francisco.

The Madrid-Washington route will form part of the transatlantic joint business agreement between Iberia, American Airlines, British Airways and Finnair.

Other new routes operating under the agreement and launching this year include Heathrow-Portland with BA; Budapest, Krakow and Prague to Chicago with AA; Philadelphia-Reykjavik also with AA; and Paris Orly to Las Vegas and Boston, both with IAG low-cost subsidiary Level.

Iberia said that with the above new services the four airlines will offer direct flights on 105 routes across the North Atlantic next year, with over 1,000 weekly return flights.