12 June Europe Air Traffic Control Strike

But long-haul flights will not be affected for the most part.

It doesn't seem so. I posted this to alert people who might be booked on connecting flights out of CDG to other European city destinations. If the connecting flight is cancelled/delayed, and a person has a train reservation for further onward travel, it could mess up their plans. Also, if it spreads across Europe, no telling how far the impact could reach - possibly even affecting outbound flights back to the States. Meant only as something to be aware of. As the article suggests, contact your specific airline if concerned.

It is good to know about in general, but people don't need to get their undies in a uproar if they are flying long-haul. It's only in French controllers, it's only 50% of flights, and the government has announced that long-haul flights will be maintained (per France 2 Informations de 20h June 10th). No need for generalized alarm. If the situation has changed, I'll re-post after watching tonight's FR2 20h news later. Edit: second union joined late Wednesday so 80% of French and EU flights affected.

....people don't need to get their undies in a uproar If you read that into my post it was not intended. As I said, it was informational only -- not any different than posts re: train strikes, which are often averted before they actually materialize.

I was at London City airport yesterday, and flights to France and Spain were severely disrupted.