BE CAREFUL!
We gate checked our double jogger and got it back with a wheel that bent and broke. I am ALMOST positive they dropped it off the conveyor belt either loading or unloading the plane given the nature of how it was broken.
But they insisted it was cargo shifting and it was not covered under their insurance. We checked at the gate, main desk for the airline, and called. So we were out an expensive stroller and had fun trying to lug it around the airport. I was so ticked off.
I am never bringing a big or expensive stroller on an airplane again. Too risky.
We did however rent a Baby Jogger City Mini double from Orlandostrollerrentals.com and LOVED it.