Airfare is usually the biggest expense in any trip, but it's also the one with the most room for savings. Prices for the exact same seat can vary by hundreds of dollars depending on when and how you book. Here's what actually works for finding cheaper flights.
Timing Your Search
The old advice about booking on a Tuesday is mostly a myth. What does matter is how far in advance you book. For domestic flights, the sweet spot is typically 4-8 weeks before departure. For international flights, aim for 2-4 months out. Booking too early or too late both tend to result in higher prices.
Flexible dates make the biggest difference. Shifting your departure by a day or two can save 30-50% on many routes. Most flight search engines have a calendar view or flexible date option that shows you the cheapest days to fly within a range.
Tools That Find the Best Deals
No single search engine catches every deal. Use a combination of these for the best results:
- Google Flights — best for exploring dates and destinations with its map and calendar views; tracks price changes and sends alerts
- Skyscanner — searches a massive number of airlines and OTAs; the "Everywhere" destination feature is great for flexible travelers
- Momondo — consistently finds competitive prices, especially for international routes
- Scott's Cheap Flights (Going) — a subscription service that emails you mistake fares and deeply discounted deals from your home airport
- Skiplagged — finds hidden-city fares where connecting flights are cheaper than direct routes to the layover city
Booking Strategies That Save Money
Searching in incognito or private browsing mode prevents airlines and booking sites from using cookies to track your repeated searches. While the impact of this is debated, it takes two seconds and costs nothing.
Consider flying into alternative airports. London has six airports, and flying into Stansted or Luton instead of Heathrow can save over a hundred dollars. The same applies to cities like New York, Paris, Tokyo, and many others. Budget airlines especially favor secondary airports where landing fees are lower.
One-way tickets on separate airlines sometimes beat round-trip fares on a single carrier. This is especially true when budget airlines serve one direction but not the other. Check both options before committing to a round trip. Also, booking flights in the currency of the departure country sometimes triggers lower pricing due to regional fare differences.