Lufthansa, Air France and others have formed an alliance of airlines and airports seeking to change the EU's planned climate laws.
Brussels last year outlined proposals for aviation including stricter emissions rules, the use of synthetic fuels, and a tax on kerosene, used in jet fuel.
Now the industry alliance is calling for changes.
Besides airlines, the group includes major hubs like Frankfurt and Amsterdam's Schiphol.
They argue that business will be driven to non-European airports which won't face the same rules.
The group rejects the kerosene tax outright.
And they want any climate surcharge on tickets to apply to entire flight routes - not just the legs that take passengers from the EU to hubs like Dubai.
The airlines and airports say they don't oppose the EU's 'Fit for 55' package, which aims to reduce greenhouse gas output by 55% by 2030.
Air travel currently accounts for around 3% of global emissions.