In the spring of 2020, English language teachers around the world were forced to rapidly start teaching in a completely online space, often with relatively little experience of online teaching, and with few opportunities for preparation. Recognising the centrality of speaking for learning, this study investigated affordances of teaching speaking online, a relatively unexplored area. Fifty-two language teachers in higher education contexts internationally completed a survey. Drawing on a framework of dialogic teaching, the findings show that teaching speaking online offers some unexpected affordances relating to the dialogic teaching principle of supportive teaching. In addition, teachers reported being able to use the online space for purposeful planning of online lessons. However, the online space is less conducive to enabling reciprocal, deliberative, and cumulative classroom talk, key features of higher education discourses. We end the paper with practical recommendations for how to ensure that dialogic teaching dimensions are not lost in an online space.