I see fares on Aer Lingus in the $600's on beta.itasoftware.com. And you can connect through Chicago O'Hare to avoid an airport change in NYC.

$656 via Chicago and Dublin. Depart YYZ as late as 4pm and arrive 9am in SNN. Not too bad.

As for CO, it's probably because they sold out of the cheapest seats (remember, each flight has many fare classes, even if they're all economy) on either the YYZ-EWR or EWR-SNN leg. Airline pricing is something that's too complicated for anybody to understand.

Is it possible that more flights will be added that start again at the cheaper price? If its not possible that more flights are going to be added I think a should book now before it moves up into an even more expensive class...

Hi there,
I've been watching the March flights from Boston to Dublin (and Shannon) for the last week, and the prices have been jumping upwards, with fewer and fewer available flights it seems. I had one flight I liked for $427RT but when I clicked to purchase it on Orbitz, I was told the flight was no longer available. WHen I tried to go through American AIrlines directly, I clicked on purchase, but was told that the price had increased to $700 and change. FInally, last night, I sat down again on my computer, and ran into the same problems on Orbitz, but was able to get two multi-destination tickets (Boston to Shannon, Dublin to Boston) March 10-21 for $377 each (that includes all fees, taxes). That said, I wouldnt wait too much longer before buying your tickets. Good lucK!!!

Hi, pliant,
Delete any cookies from continental from your computer. Then recheck for your flights' prices. You will have to do delete the cookies each time you finish with the continental website.

Sometimes, a higher price will result if you keep checking a flight with the cookies still on your computer. Don't know why this is. Possibly because they realize you really want that flight and may be willing to pay if you think the other price category is gone.

That's a very interesting tip, niblette.

Good news! When got in the evening I checked the Continental site again and the flight had gone down to $879 CND per person so I booked it right away. Thanks for all your help! :)