Originally Posted by
richarddd
Will DL rebook on UA (from EWR) or AA?
The last time this happened to me, having a preferred reroute and calling early was key. Alternative flights filled very quickly.
This is extremely unlikely. If you want to fly AA from JFK or UA from EWR, you should purchase an AA or UA ticket. Purchasing a DL ticket and hoping for IROPs is not a good way to make this happen.