Traveling to Europe this summer? Be prepared to face one long flightmare.

Thibaud MORITZ / AFP

• French air traffic control strikes disrupted over a million passengers across Europe in early July.
• Workers and the French government are at an impasse, and further strikes are possible.
• If you're traveling to Europe this summer, be aware that you could face delays or cancellations.

Strikes by French air traffic controllers affected over a million people's travel plans this month — and may be set to continue.

Citing understaffing and poor management from a government agency...