There will be no Heathrow Express trains today or on Boxing Day, the account for the train service said.
Good morning. Due to Network Rail works there are no Heathrow Express trains running today or Boxing Day #HEXUpdates
Good news is that a revised Inter Terminal Transfer Service will be in operation - with on average 4 trains per hour from each terminal.
Airline easyJet said it would be operating a limited number of flights from Gatwick Airport today to replace ones that should have operated yesterday.
These include flights to Faro, Basle, Malaga, Alicante and Amman, while passengers from a cancelled flight from Gibraltar to Gatwick will be travelling on one from Malaga today.
EasyJet said it would be unable to schedule any further flights today because of limited capacity at airports and crew availability.
A spokesman said:
Due to the high amount of cancellations that were unavoidable on the 24th, we are currently working on a plan to repatriate all passengers back to their destinations as soon as possible.
But please be advised this may take a couple of days whilst the programme resumes to normal operation from Thursday.
A passenger at Gatwick Airport has told ITV News there is "total mess" after flight cancellations and delays after a power failure in the north terminal led to a backlog of luggage.
Lilly Evans said: "bags are mixed, those that were destined to go on cancelled flights to different destinations and those who landed in UK".
The airport has said that "a full service" will be in operation today but advises passengers to check with airlines for the status of their flights as most will now be running from its south terminal.
Hundreds of passengers at Gatwick Airport have been left without their luggage after delays and cancellations after a power outage in its north terminal.
One passenger waiting to get his bags back after an earlier flight cancellation tweeted this picture.
Some frustrated passengers affected by travel disruption at Gatwick Airport after a partial power failure in its north terminal have taken to Twitter to express their anger.
A passenger whose flight has been cancelled after disruption at Gatwick airport has tweeted this picture of fellow travellers gathered in the terminal.
Gatwick Airport has said that a full service will be in operation today after a power failure in North Terminal caused widespread disruption on Christmas Eve.
We will be operating a full service tomorrow though most flights will be running from the South term. Check with your airline for status.
Thousands of people are understandably very angry at Gatwick, so much so that the airport police had to be called in to calm down the situation.
Perhaps luckily, because of rail disruption, most of those people had arrived by road today and have been able to leave.
However, there are several hundred passengers who are stranded at the airport - their plans for Christmas obviously ruined.
EasyJet says its customer service line will stay open until midnight, after many passengers have been left stranded at Gatwick Airport. A power outage at North Terminal has led to cancellations and delays.
Our Customer Service will be exceptionally open until midnight on 0843 104 5000-Please call to see what can be arranged for you.
The airline has been forced to cancel 38 flights in total today and a number have been delayed.
A spokesperson for Gatwick has told ITV News that police who were on duty at the airport have been helping to assist angry passengers.
They said that 47 services have been cancelled today and that there will be no more flights tonight.