The British Airways' cabin crew strike enters in third and final day today (March 22), affecting business travellers for the first time as they return to work after the weekend.
Travel management companies have said the disruption to travellers' plan should be minimal as they have had enough notice to rebook with other carriers.
A number of travellers were not forced to change arrangements at all as the airline's successful contingency plans meant many flights to business destinations departed on schedule.
One TMC boss praised BA for its handling of the situation and lauded its communication with the trade.
Mike Hare, chief executive of Portman Travel, said: "Giving customers the opportunity to rebook or collect a refund in advance was a good decision. There is a lot of pressure on our staff, but the toll free BA helpline is there if they need it and has been helpful.
"The whole situation has underlined again the value of a TMC. We have won a lot of friends and customer loyalty because of the role we have played."
The Unite union claimed that only 300 of the 2,200 cabin crew turned up for work over the weekend, while the company said 98% of Gatwick staff reported for duty and more than half of workers at Heathrow.
BA boss Willie Walsh praised staff who reported for duty in a YouTube video streamed yesterday.
Fresh negotiations were expected to continue today.
Union members have said they accept that BA has to cut costs if it is to survive, but insist they are furious about the way in which bosses have introduced the changes.
The strike was expected to cost BA millions in lost revenues.
Passengers were advised to check the BA website or contact their TMC to find out which flights were operating.