The carrier will continue to promote itself during match days and across the club’s international channels, advertising its daily return services from the UK to Bangkok and Taipei.
Eva Air general manager Sarah Wu said West Ham provided a “perfect platform” for the airline and thanked the club’s fanbase for being “extremely supportive” of its brand.
Wu said the airline was committed to developing more engagement opportunities and experiences for fans as the partnership continued to grow.
Nathan Thompson, West Ham United’s chief commercial officer, added: “We have enjoyed a fantastic partnership with EVA Air over the last four years and we are excited to continue developing our relationship.
“We thank them for their unwavering support of the club and we look forward to supporting them as they reintroduce their flights following the pandemic.”