North West airports welcomed the announcement by the National Air Traffic Services that there will be a partial lifting of the UK flight ban on Tuesday.
Flights will be permitted in Scotland, Northern Ireland and parts of Northern England from 0700 with further areas in the south expected to follow suit later in the day.
Liverpool John Lennon Airport said on its website at 3.45pm on Monday: "This is a dynamic and changing situation and is therefore difficult to forecast beyond 0700 local; however, the latest Met Office advice is that the contaminated area will continue to move south with the possibility that restrictions to airspace above England and Wales, including the London area, may be lifted later tomorrow (Tuesday).
"We will continue to monitor Met Office information and review our arrangements in line with that. We will advise further arrangements at approximately 2100 (local time), today."
A Manchester Airport spokesperson said: "NATS has confirmed that UK airspace will progressively open tomorrow.
"Consequently, Manchester Airport will be open from 09:00 on Tuesday 20 April 2010 unless there is a deterioration in conditions.
"It is absolutely essential that people contact their airline before travelling to the airport for any flight because schedules will take some time to return to normal.
"After five days without flights, tens of thousands of passengers waiting to be repatriated and the ash cloud continuing to cover parts of Europe, significant disruption is likely before normal operations are resumed."
At midday today Blackpool International Airport said only flights by Manx2 to the Isle of Man would resume. Jet2 and Aer Lingus were still not flying out of the airport.