The ultrahip Hipmunk.com has revolutionized how to find the best airfares online.
I’d planned to fly WestJet home to Canada from Baja. … But they don’t fly that route on the day I must return to the Great White North.
Here’s my results from a fast and easy search on Hipmunk:

I took the top choice as selected by “agony”, a combination of lowest price, fewest stops, and shortest duration.
The damage: $250.66USD (including taxes & $25 luggage charge) with connection in Phoenix
WestJet non-stop on the way down was $300.
I can see no downside to this new approach in comparison shopping. (Be aware that some airlines are not listed in this or any other fare comparison site, notably Southwest.)
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Thanks for the great review, Rick! Do let us know how we can improve hipmunk.com in any way! (email contact@hipmunk.com)