Do not use kayak.com. We bought tickets through them. The tickets were canceled, but we did not receive notification. Even though they were canceled, the tickets continued to be listed by kayak.com under My Trips, so we had no way of knowing that they were cancelled. We didn't find out that we had no tickets until we checked in for the flight. These things happen, but when we called them to report that they information listed under My Trips was inaccurate, they were not only unhelpful, but extremely rude. Using kayak.com cous us an extra $1000 and the aggravation of being treated rudely. Spare yourself and do not use kayak.com