''AvengerAvengers: Endgame'' memiliki premier dunianya di Los Angeles Convention Center pada 22 April 2019<ref>{{Cite web|url=https://comicbook.com/marvel/2019/04/15/avengers-endgame-theaters-adding-showtimes/|title='Avengers: Endgame' Being Called "One of the Biggest Movies of Our Lifetime," Theater Chains Adding Additional Showtimes|website=Marvel|language=en|access-date=2019-04-26}}</ref><ref name=":0">{{Cite web|url=https://www.hollywoodreporter.com/behind-screen/avengers-endgame-premiere-disney-dolby-build-high-tech-la-theater-1203843|title='Avengers: Endgame' Premiere: Disney, Dolby Build High-Tech Theater in LA Convention Center|website=The Hollywood Reporter|language=en|access-date=2019-04-26}}</ref>.Disney mengonversikan Hall K convention centre untuk pemutaran perdana film, bekerja dengan [[Dolby]] dan QSC Audio untuk memasang layar 70 kaki (21 meter), proyektor [[Dolby Vision]], dan sistem suara [[Dolby Atmos]]. Pusat konvensi juga mengadakan kedatangan karpet merah pertama dan setelah pesta<ref name=":0" />.Itu dirilis di Cina, Australia, dan bagian lain di Asia dan Eropa pada 24 April 2019<ref>{{Cite web|url=https://deadline.com/2019/03/avengers-endgame-china-release-date-worldwide-opening-record-1202584521/|title=‘Avengers: Endgame’ China Release Set On April 24; $800M+ WW Opening In Sight?|last=Tartaglione|first=Nancy|last2=Tartaglione|first2=Nancy|date=2019-03-28|website=Deadline|language=en|access-date=2019-04-26}}</ref><ref>{{Cite web|url=https://www.msn.com/en-ph/kids/other/pinoys-among-those-who-get-to-watch-avengers-endgame-two-days-ahead-of-rest-of-the-world/ar-BBUQfwz|title=Pinoys among those who get to watch ‘Avengers: Endgame’ two days ahead of rest of the world|website=www.msn.com|access-date=2019-04-26}}</ref>. dan dirilis di Inggris Raya pada 25 April 2019<ref>{{Cite web|url=https://www.mirror.co.uk/tv/tv-news/what-avengers-4s-release-date-12308654|title=When Avengers Endgame is released in the UK - and your guide to the new film|last=Rowney|first=Jo-Anne|last2=Knight|first2=Lewis|date=2019-04-23|website=mirror|access-date=2019-04-26}}</ref>. Dan di Amerika Serikat pada 26 April 2019<ref>{{Cite web|url=http://www.digitalspy.com/movies/a839336/guardians-of-the-galaxy-avengers-4-mantis/|title=Guardians star confirms they'll return for Avengers 4|last=S|first=Ian|last2=well|date=2017-09-29|website=Digital Spy|language=en-GB|access-date=2019-04-26}}</ref><ref>{{Cite web|url=https://www.usatoday.com/story/life/entertainthis/2018/12/07/avengers-endgame-watch-first-trailer-marvels-anticipated-film/2212076002/|title=It's finally here! Watch the first trailer for Marvel's newly titled 'Avengers: Endgame'|website=USA TODAY|language=en|access-date=2019-04-26}}</ref>, di [[IMAX]] dan [[3D]]<ref>{{Cite web|url=https://deadline.com/2017/02/disney-films-show-imax-through-2019-new-distribution-deal-star-wars-1201938700/|title=Disney Films To Show On Imax Through 2019 With New Distribution Deal|last=Lieberman|first=David|last2=Lieberman|first2=David|date=2017-02-22|website=Deadline|language=en|access-date=2019-04-26}}</ref>.Awalnya dijadwalkan akan dirilis di Amerika Serikat pada 3 Mei 2019.
Film ini berdurasi total 3 jam dan 1 menit, menjadikannya film Marvel terpanjang.<ref name="EWruntime">{{cite news |last1=Breznican |first1=Anthony |title=Avengers: Endgame runtime may exceed three hours, no time stone needed |url=https://ew.com/movies/2019/03/25/avengers-endgame-runtime-three-hours/ |accessdate=25 April 2019 |work=[[Entertainment Weekly]] |date=March 25, 2019}}</ref>
