Has anyone used the one way flight service from onewayfly.com?

Many people are using these "tickets" and reporting enthusiastically that they didn't have a problem. Unfortunately they usually don't tell us whether they really were asked tö show that ticket at immigration or at the airport check in counter......

I don't use them, because there are other options which are not really much more expensive.

Other people have used no problems have been reported that I have seen. Many posts about it.

i have not, but i just booked a fully refundable flight through united. it is very expensive but definitely worth it for the guarantee:)

Nope, feel free to try and let everyone know how it goes when they ask you for an onward ticket at check-in 🤔