You know that's what's going to happen, complete with a stupid arc where they break up for a stupid reason, he will run to airport out of breath and she'll tearfully hold him, then followed by a time skip after they finally kiss as she is leaving.
It's almost a given at this point. It's how Romance Manga's end, even the good ones have a flip on this exact shitty ending.
This does feel like it could be at the very least the start of the final stretch, but when everyone thought that last time we were getting a confession and it ended up only being the halfway point