Originally Posted by
Steppo
The script won't be able to autodetect children. Some OTAs require the child's age. You may modify the Url on your own but be aware this won't work for UA for example. As long as it is not an infant, the price should be the same. So you should doing fine by going ahead and book for adults only.
Would it be possible in the script to prompt for the childs age? And then build that into the url? If not, it should be safe to assume age 11, which is what most fares use as a breakoff point, and that is what ITA itself uses for child fares.
For domestic fares, I agree that adults will almost always price the same as children. But on international fares, it is quite common for the child fares to be 67% / 75% / 90% of the adult fare, which can make a difference of several hundred dollars.