Delta has asked the US government to relax slot rules for flights between the USA and Tokyo’s Haneda International airport due to a “fundamentally changed” demand environment. The Atlanta-based carrier said in a filing with the US Department of Transportation (DOT) on 1 May that demand assumptions for various routes from the USA are “no longer valid” in the post-Covid-19 era, and “need to be reassessed and refined to align capacity to actual demand”. The global pandemic, it says, “materially altered the competitive landscape” on flights between the USA and Japan’s capital. Earlier this year, the DOT extended slot relief for airlines flying to China, Hong Kong and Japan due to continued depressed demand for travel on those routes. The relief temporarily allows airlines to leave slot assignments unused without risking losing them. Now, Delta wants the DOT to ease Haneda slot restrictions. Specifically, Delta is asking the agency to grant US carriers authority to “use up to two of their slots to serve Haneda from” any US airport, its filing says. Currently, the DOT authorities specify from which cities US airlines must serve Haneda. “The department’s endorsement of flexible, market-based decision-making to help air carriers navigate the operational challenges caused by Covid-19 in the context of the limited entry start up and dormancy waivers was astute and well-reasoned,” Delta says. “It would be equally appropriate for the department to endorse such flexibility and market-based decision-making for US-Haneda service as the demand environment slowly stabilises and US-Haneda slot holders recalibrate their international networks. Just as air carriers need flexibility to make market-based decisions on when and where to deploy their network and operational assets for purposes of preserving their limited-entry DOT-issued international route authorities, so too do they need flexibility to determine the optimal US gateways for serving Haneda."<br/>The airline holds slots to serve Haneda from seven US cities; Atlanta, Los Angeles, Seattle, Detroit, Minneapolis-St Paul, Portland and Honolulu. Delta says demand on those routes has recovered only 64% or less. In Q1 2023, it operated flights to Haneda from just the first four of those cities.<br/>