Delays are rarely announced in one go. First it is thirty minutes, then an hour, then a new gate, then a crew change. Each update looks small, which is why people keep waiting instead of acting.
The useful habit is to treat any delay above about ninety minutes as a possible disruption to your whole day, and start checking your options while you still have them.
Reading the delay properly
Look at where your aircraft actually is. Flight tracking sites show the inbound aircraft, and if it has not left the previous city yet, your posted departure time is optimistic. Crew duty limits are the other common cause: a long delay can turn into a cancellation late in the evening.
Also check what the delay costs you. A two hour delay on a direct flight is annoying. The same delay before a tight connection is a different problem, and it needs a different response.
Step by step
Step 1: Find the reason and the realistic new time
Ask the gate agent two questions: what is causing the delay, and where the aircraft is now. Note the answer with the time. If nobody at the gate knows, the airline's phone line often has more information than the person standing in front of a very long queue.
Step 2: Protect the connection before it breaks
If your connection is at risk, ask to be moved now rather than after you land. Rebooking while you are still at the departure airport is much easier than doing it in a transit hall at midnight. Airlines will often protect you on a later flight for free when the delay is theirs.
Step 3: Claim food and comfort during long waits
Once the wait passes roughly two to four hours, depending on the route length, most carriers provide meal vouchers, and after a certain point a hotel. Ask at the desk. If the airline says no and you buy food yourself, keep the receipts and note the times.
Step 4: Decide when to stop waiting
If the delay would ruin the point of the trip, a same day meeting or a one night stay, you can often ask for a refund or a rerouting instead. Make that decision consciously rather than by default, and get whatever you agree confirmed in writing.
Small moves that help
- Charge everything while you can, a dead phone turns a delay into a crisis.
- Note gate changes with times, this record is useful later.
- Move your airport pickup instead of paying for waiting time.
- If you have lounge access through a card, a long delay is exactly when to use it.