The vast bulk of German companies is set to look elsewhere for better fares when the new Lufthansa price model comes into effect in July.
A poll of members by the VDR, Germany's business travel managers' association, found that 85% of corporates said they would "increasingly compare Lufthansa prices with those of other airlines and act accordingly."
11% of respondents said they would choose the new Lufthansa tariff including corporate discounts.
Just 4% said they would search for the best Lufthansa tariffs but accept higher process costs if they were not avoidable.
The new Lufthansa price model was also again rejected by executives from associations representing agents and travel managers from Germany, Austria and Switzerland who met in Frankfurt last week.
The meeting was organised by the German agents' association, the DRV and attended by 240 delegates.
These included representatives from the VIR, the association representing German online agencies, the Austrian agents' and travel managers' association and the Swiss agents' group.
A spokesman for the DRV said delegates agreed to send representatives to the Bundeskartellamt, the German competition commission, on May 9 to state their case.
At the meeting Otto Schweisgut, a DRV director, acknowledged that some agents had signed up to the Lufthansa scheme but said this was because of the need to meet client requirements.
It did not imply acceptance of the scheme, he said.
Lufthansa and its fully-owned airline sister-airline SWISS announced their new programme in January.
Under the proposals, one way fares on Lufthansa and SWISS will go up by 15 one way and 30 for a round trip on tickets bought in Germany and Austria from July 1.
Prices for tickets bought in Switzerland and Liechtenstein will go up from October 1.
But the carriers said they would continue to make available the current lower fares after those dates.
These will be called "preferred fares" and will be subject to the surcharge if booked through a GDS.
Lufthansa will charge agencies 4.90 plus VAT per coupon and SWISS will charge CHF8 (5) per booking.
If the preferred fares are booked through the two carriers' travel agent portals, or direct from the airlines' websites, call centres or ticket counters, there will be no fee.
At the same time the carriers said it would no longer publish web-only fares.
The move has been widely criticised. Amadeus, the biggest GDS in Central Europe and also partly owned by Lufthansa, and ECTAA/GEBTA, the European agents'association, have both condemned Lufthansa's actions.
At ITB Business Travel Days in March, Andreas Wilbers of Wilbers Consulting urged agents not to sign up for the deal.
He said if Lufthansa and BA both charged the same price for a return trip to London and a company had a policy of picking the cheapest fare, it would choose BA because there would be no extra fee.
"This would become an avalanche and Lufthansa would be forced to change its price. It would have to match its fares with BA's but clients would still have to pay the additional GDS fee," Mr Wilbers said.
A spokesman for Lufthansa said spent it spent 200m a year on "sales related costs which go to the GDSs" and it told the market a year ago that it was going to do something about it.