Here's how to find and book these flights...
1. Start with a search using Google Flights Explore, from Vancouver to Europe:
Look for destinations and date combinations from Vancouver to Europe that are in the $600s (roundtrip, including taxes). Prices on Google Flights Explore are in $USD.
2. Take your destination and dates that you found, and try searching on either of the following airline sites to make your booking:
Air France - Air France Canada
KLM - KLM Canada
You could also try a 3 day flexible date search using Kayak
Prices on the sites above will be in $CAD.
The price drops appear to be concentrated between the date range of November 2014 and April 2015.
Here are some examples of the cheapest destinations I've seen from Vancouver, and have verified that the price is actually bookable...
(prices are roundtrip, including taxes)
Manchester, England (MAN) - $669
Birmingham, England (BHX) - $671
Edinburgh, Scotland (EDI) - $671
Glasgow, Scotland (GLA) - $671
Newcastle, England (NCL) - $674
Frankfurt, Germany (FRA) - $685
London, England (LON) - $691
Multi City Trips
You may also be able to find some great multi-city trips, involving Paris or Amsterdam, and the destinations listed above.
For these price drops, I've found that Orbitz is a good place for verifying and booking these Multi-City flights. Just change the flight type from Round Trip to Multi-City when you start your search.
Try looking for flights from Vancouver to 'X Destination' (from the list above), to Paris (CDG), to Vancouver. The price could very well come back in the $600-$700 range.
Or try Vancouver to Paris (CDG) to 'X Destination' to Vancouver. The price could be low for that as well.
Or try the same thing, but using Amsterdam (AMS) instead of Paris.
These are not an advertised price drops, so it's impossible to say how long they will last.
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