Originally Posted by
pptsky
As to the best route from LAX, LHR seems very reasonable of course depending on specific offer. For BER, IB/Madrid may be a good option as well. Airlines outside OneWorld - not sure they do this.
If the cancellation is known prior to leaving PDX, easiest could just be PDX-LHR-HEL-BER? Wonder if they would even do PDX-LHR-BER.