[Butch Cassidy Slept Here]

Air Canada will probably provide a routing (to Portland) that avoids LAX---but---you may encounter another thick Hindi accent.

British Air is a better bet for someone speaking clear English. However, here, you may be routed through LAX, with the last leg, or two, of your trip being on American Air--which can be worse than Delta.

Northwest--Delta's future merger partner--recently opened a call center in Iowa. Whether that center is reachable from overseas, I do not know.

If all else fails---go for Lufthansa to Denver (non-stop from Munich and Frankfurt.) Overnight in Denver (reasonable hotel prices until the Dem convention.) Then, the next day, United to Portland.