score:1
Yes.
I flew from Vancouver to Whitehorse (and back) on Air Canada and experienced no problems with my Washington EDL.
Security didn't even look at it and the gate attendant didn't blink.
As Micheal Seifert points out, airlines possibly have the option to be more stringent with their ID requirements.
Upvote:1
The letter of the law is the Secure Air Travel Act. Here's what it says:
(1) An air carrier must accept only the following identification to verify the identity of a passenger for a domestic flight:
(a) one piece of valid photo identification that is issued by a government authority and that shows the passengerβs name, date of birth and gender;
(b) two pieces of valid identification that are issued by a government authority, at least one of which shows the passengerβs name, date of birth and gender; or
(c) a restricted area identity card,
So it sounds like the law allows for a US driver's license (not even an enhanced one) to be used as ID for a domestic flight within Canada.
That said, the law really only sets out what the airlines can use as acceptable ID, and doesn't appear to require them to accept all such forms of ID. It's entirely possible that Air Canada/WestJet/Porter/Orca Airways sets more stringent regulations about what ID they will accept. Your best bet is probably just to call the airline's customer service line and ask them.