Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Input: Flights out of London Heathrow do not contain departure gate information until about 45 minutes before the flight is ready to depart (presumably so you spend more money at the duty-free). Are there any public APIs or resources that will tell me which gate my flight departs from before the Heathrow departure screens do?

Output:
Determine gate for departing Heathrow flight