The system
- Pick your window. Use the route guide to see the typical booking window for your route and season. For most long-haul leisure trips it’s somewhere between six and twelve weeks out, earlier for peak dates.
- Set the alerts. Google Flights for your exact dates and a ±3-day variant; one alert on an alternative airport pair if it’s realistic (EWR vs JFK, HND vs NRT).
- Write down your target. Look at the price graph, pick a number that would make you happy, and write it down. That’s your buy trigger.
- Ignore the noise. Predictions from Kayak and Hopper are estimates. Deal newsletters are for flexible people. Neither knows your dates.
- Book when it hits. Then close the tab and stop looking. Checking after you book helps nothing.
When to skip the waiting entirely
- Peak dates (holidays, festivals, school breaks): fares rarely fall. Book early.
- Fewer than three weeks out: fares generally rise. Book now.
- Award tickets: availability, not price, is the constraint. Grab it when you see it.
Which tool for what
- Google Flights — best date grid and price graph; reliable alert emails.
- Skyscanner — better low-cost coverage; “everywhere” searches for open plans.
- Kayak / Momondo — second opinion on OTAs and mixed one-ways.
- Hopper — mobile watch-and-alert with paid add-ons; read what each add-on covers.
- Going — deals from your home airport, for flexible dates.
Frequently asked
Is there a best day of the week to buy flights?
No reliable one. Fares move with demand, capacity and competition on each route; the day you buy matters far less than how far ahead you buy and which days you fly.
How many price alerts should I set?
Two or three per trip: your ideal dates, a flexible variant, and an alternative airport. More than that creates noise and anxiety.
Sources & verificationLast verified August 29, 2026
- Google Flights, Kayak, Skyscanner and Hopper help documentation
- Editorial tracking logs on transatlantic and Asia routes
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