<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by daniellam:
My plan is to fly into FRA, take train to AMS and fly from AMS to IAD (UA).
The CX/UA RTW is very strict on backtracking.
HKG-CDG-LAND-AMS-IAD would be backtracking.
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daniellam - PAR and AMS is considered a straight line and if you see properly on a map, PARIS is still slightly east of AMS and you're going WESTWARD towards USA. So flying into PARIS is okay.
You can also fly from PARIS to IAD on UA.