Originally Posted by DutchSE
If I purchase two separate tickets for travel on the same day what will happen if one flight arrives late causing me to miss the other flight?
Perhaps to be more clear:
I want to puchase an e-ticket from BMI to fly BRU-LHR and then fly AC from LHR-YYZ-LAX. If my BMI flight is delayed and I miss my AC flight what will AC do? Is this very risky?
Thanks for your help

From reading previous expereinces here, and my own, it appears that you are very much at their mercy....
That being said, I'll give a ^ ^ to Delta for helping me and fiance at Christmas. We were in similar but slightly reversed situation to you - on AC from YHZ-BOS, same day, separate ticket on DL BOS-TPA. Turned out we travelled on the day of the big Nor'easter blizzard (12/27), and despite trying to protect ourselves by being first flight of day out of halifax, and last flight of day out of Boston, we were only able to get as far as YYZ by the evening of 12/27. Delta could never promise anything, but were very accomodating at waiving change fees and doing what they could to get us down to Florida as quick as could once finally got to BOS. Not sure how much of their generosity was cuz of impacts of storm on BOS itself, but in the end, this time, the split ticketing didn't blow up in our face, but YMMV.
I'll also add - there was a family in the MLL in YHZ who had different story: had separate tickets on AA

trying to get to the Caribbean, departing 6:00 12/28 from YYZ, and AA was telling them that they needed to pay $75 change fee + fare difference (to walk up fare) if they got stuck in YHZ on the evening of the 27th and weren't able to make their original flight out of YYZ the next day. Something like $4000...... Again YMMV....