Travel Insurance

[ExGingi]

I tried IMG yesterday, but it only let me put in a start date of the following day. It's fine if the coverage starts then, but I don't want it to be invalidated if the trip started already.

That's universal. Insurance can only start the day after purchase.

As long as it's medical only, they allow it. GeoBlue don't allow it after trip started. MondialCare allows it even though it's a trip coverage.

[lifetimedeals]

Any idea how to get travel insurance for a student traveling through europe to TLV that only has a one way ticket at the moment?

[ExGingi]

Any idea how to get travel insurance for a student traveling through europe to TLV that only has a one way ticket at the moment?

The same way you would do it otherwise. Assuming you are purchasing travel medical - just put the presumed end date. If needed you can usually extend before it expires. If purchasing trip protection, you would need to put the return date, an extension might be possible but isn't as straightforward.