Everyone has a friend who seems to always fly somewhere exotic for next to nothing. They’re not lucky. They just have a system. Here’s mine — and after reading this, it’ll be yours too.
First, Let’s Kill the Myths
Before we get into what actually works, let’s clear out the noise. The internet is full of outdated flight-booking advice that does nothing except waste your time:
Myth: Flights are cheaper on Tuesdays. Not true. Airlines use AI-driven dynamic pricing that changes constantly based on demand, seat availability, and dozens of other factors. There is no magic day of the week.
Myth: Searching in incognito mode gets you cheaper prices. No evidence this works. Airlines don’t raise prices based on your search history.
Myth: There’s one perfect time to book. There’s a general window that tends to work well (more on that below), but no algorithm can perfectly predict airline pricing.
Now that we’ve cleared the decks, here’s what actually does work.
Step 1: Start with Google Flights
Google Flights is the best starting point for almost any flight search. It’s fast, clean, and has features that most people don’t use but should.
The Explore Map is the most underused tool in travel. Go to Google Flights, leave the destination blank, and it shows you a world map with prices to everywhere from your home airport. If you’re flexible about where you go (or want to find the cheapest possible destination in a given month), this is extraordinary.
The Price Calendar shows you the cheapest days to fly on any route. If you have a flexible travel window, check this before you book — shifting your trip by even one or two days can save hundreds of dollars.
Price Alerts are essential. Once you’ve identified a route, hit “Track Prices” and Google will email you when the fare drops. Set it and forget it.
One important note: use Google Flights to research and track. For the actual booking, go directly to the airline’s website. You’ll often get the same price without third-party complications if anything goes wrong.
Step 2: Use Skyscanner for Flexibility
While Google Flights is the best for specific route research, Skyscanner is the best tool when you’re flexible on time.
The “Whole Month” view lets you search an entire month at once and see prices day by day — so you can instantly spot the cheapest travel dates without clicking through each one manually.
The “Everywhere” search lets you type in your home airport and see the cheapest destinations available for any given period. If you’ve ever thought “I just want to go somewhere warm — anywhere” this is your tool.
Like Google Flights, use Skyscanner to discover and compare. Then book directly with the airline.
Step 3: Set Up Deal Alerts
The single highest-impact thing you can do to find cheap flights is sign up for a flight deal service. These services monitor thousands of routes around the clock and alert you when fares drop significantly — including so-called “mistake fares” when airlines accidentally price tickets far below market rate.
Going (formerly Scott’s Cheap Flights) — the most popular and for good reason. They specialize in finding genuinely exceptional deals, often 40-90% off normal prices. Their free tier covers domestic deals; the paid tier (~$49/year) covers international and is worth every cent if you travel more than once a year.
Dollar Flight Club — similar service, strong for international deals. Free tier available.
Google Flights Price Alerts — free, reliable, and covers any specific route you’re watching.
The key to deal alerts is acting fast. Mistake fares and flash sales can disappear within hours. When a deal lands in your inbox, you need to be ready to book quickly.
Step 4: Book at the Right Time
While there’s no single magic booking window, research consistently points to a “Goldilocks Window” — the period when prices are most likely to be reasonable:
- Domestic flights: Book 1–3 months before departure
- International flights: Book 2–8 months before departure
- Peak season (summer, holidays): Book earlier — 3–6 months out for domestic, 4–9 months for international
For domestic holiday travel specifically: book Thanksgiving flights by early October and Christmas flights by Halloween. That’s when the cheapest fares tend to appear.
The exception to the “book early” rule: last-minute deals. Airlines sometimes slash prices dramatically within two weeks of departure to fill empty seats. This strategy only works if you’re genuinely flexible — no fixed plans, no hotel booked, no time off already requested.
Step 5: Think Flexibly About Airports
This is one of the most consistently effective strategies and most people overlook it.
If you live near multiple airports, check them all. Flying from a smaller regional airport instead of a major hub can cut your ticket price significantly. Flying into a secondary airport at your destination (and taking a train or bus into the city) often saves money too.
Some routes also have cheaper “gateway” options — for example, flying New York to Tokyo via a connecting hub in a different city is sometimes dramatically cheaper than a direct flight, and a long layover can turn into a bonus destination rather than a pain.
Step 6: Consider Mixing Airlines
This is an advanced move, but worth knowing about. Sometimes the cheapest way to get from A to B is to book two separate one-way tickets on different airlines rather than a round trip on one carrier.
Kiwi.com specializes in finding these combinations — it will show you routes that involve multiple airlines booked separately that, combined, are cheaper than any single itinerary. Use it as a discovery tool, then verify pricing on Google Flights and book directly with each airline.
One important caveat: if you book separate tickets and your first flight is delayed, the second airline doesn’t care. Only use this strategy if you have comfortable buffers between flights.
Step 7: Use Points and Miles
This deserves its own post (coming soon), but the short version: if you’re not using a travel rewards credit card, you’re leaving significant money on the table.
The right card for you depends on how you travel, but the core principle is simple — you’re spending money anyway, so you may as well earn points on it. Those points can be redeemed for flights that would otherwise cost $800, $1,200, or more.
The best travel credit cards right now offer substantial sign-up bonuses that can cover a round-trip international flight on their own. Once you’ve earned points, use tools like Point.me or PointsYeah to find the best award availability across airlines.
The Complete Checklist
Here’s the whole process in one place:
- Search Google Flights — use the Explore Map if flexible on destination, Price Calendar if flexible on dates
- Check Skyscanner — use Whole Month view to find cheapest travel days
- Set price alerts — Google Flights for specific routes, Going or Dollar Flight Club for surprise deals
- Book in the Goldilocks Window — 1-3 months out for domestic, 2-8 months for international
- Check alternate airports — at origin and destination
- Consider mixed-airline itineraries — use Kiwi to discover, then book direct
- Book directly with the airline — not through third-party booking sites
- Keep checking after you book — many airlines offer credits if the price drops
FAQ
What is the cheapest day to fly? Research suggests Tuesdays, Wednesdays, and Saturdays tend to have lower fares than Fridays and Sundays, but the difference is usually modest. Flexibility on dates matters far more than which specific day you fly.
How far in advance should I book international flights? The sweet spot is 2–8 months before departure for off-peak travel, and 3–9 months for peak periods like summer and holidays.
Is it cheaper to book one-way or round-trip? It depends on the route and airline. On budget carriers in Europe and Asia, two one-ways are often cheaper. On US domestic routes, round trips are usually the better deal. Always check both.
Do flight prices go down closer to departure? Sometimes — airlines do drop prices last-minute to fill seats. But this is unreliable and risky. The Goldilocks Window approach is more consistent. Only hunt last-minute deals if you can truly book and fly on short notice.
What’s the best free tool for finding cheap flights? Google Flights. It’s free, comprehensive, and has features (Price Calendar, Explore Map, Price Alerts) that rival or beat most paid services.
Want to go deeper? Check out our guides to the best travel credit cards and how to use points and miles to fly for almost nothing.