Key Takeaways

  • Let’s talk about cheap flights. We all know airlines are out to screw us over — and no one wants to be the person who gets stuck paying the highest fa
  • I’ve written about finding a cheap flight before — and even my process for booking a flight — but today I want to talk about some persistent and inacc
  • There are a lot of articles out there that list “secret hacks” claiming to save you thousands. “If you book a flight on a Tuesday during a blood moon
The departures and arrival display at an airport

Last Updated: 8/28/23 | August 28th, 2023

Let’s talk about affordable air travel. We all know airlines use complex pricing strategies — and no traveler wants to overpay. That’s why many spend hours scouring articles for ‘secret hacks,’ hoping to outmaneuver opaque airline algorithms like they’re negotiating with a high-stakes dealer.

Route for Less has covered strategies for finding low-cost flights and optimizing your booking process before — but today, we’re tackling persistent, misleading myths about flight booking that continue circulating due to repetition, not evidence.

You’ve probably seen headlines promising massive savings with bizarre conditions: “Book on a Tuesday at midnight during a full moon for the lowest fare!”

That’s hyperbole — but it reflects a real problem. Too many widely shared tips are outdated, unverified, or outright false. So let’s separate fact from fiction: here are five enduring myths you can safely ignore — saving you time, stress, and unnecessary effort while still landing great fares.

MYTH #1: You Should Search Incognito

This is arguably the most widespread and misunderstood belief. It sounds logical: since websites track us via cookies, surely airlines monitor repeated searches and inflate prices accordingly?

Countless guides recommend using incognito mode or disabling cookies to ‘trick’ the system. But there’s zero credible evidence supporting this claim.

Multiple analyses by major flight-tracking platforms and consumer research groups confirm no price differences between regular and incognito browsing sessions. In fact, when users abandon carts, companies more often lower — not raise — prices to incentivize completion.

As noted by experts at Going (formerly Scott’s Cheap Flights), one of the most trusted deal-alert services:

They tested the same Denver-to-London route 100 times consecutively — and saw identical pricing on every single search. If cookie-based price manipulation were real, services like Going — which run thousands of automated fare queries daily — simply wouldn’t function reliably.

Airfare changes constantly. A 2022 CheapAir study found average economy fares fluctuate up to three times per day and nearly 50 times total before departure. Airlines rely on dynamic pricing engines that weigh demand, inventory, competition, fuel costs, seasonality, and more.

Flights aren’t sold on just one website — they’re distributed across hundreds of channels simultaneously. Millions of travelers view the same routes in real time. Prices shift as seats sell — not because of your browser history. If a fare jumps an hour after your first search, it’s likely because the last seat at that price was purchased — not because you were ‘tracked.’

There are only so many seats on a plane. Once they’re gone, they’re gone. Incognito mode won’t create new availability or unlock hidden discounts.

MYTH #2: It’s Better to Book on a Tuesday

Back in the early 2000s, some airlines released weekly sales on Tuesdays — and competitors followed suit. That pattern seeded the enduring advice to book flights on Tuesdays.

Today, however, airlines deploy AI-driven dynamic pricing that adjusts continuously. Algorithms weigh dozens of variables: historical demand, current bookings, route competitiveness, fare class, fuel volatility, seasonal trends, and even local events.

CheapAir’s Annual Airfare Study — analyzing nearly 1 billion fares — consistently shows that the day you *book* has negligible impact on price. What matters far more is the day you *fly*: Wednesday remains the least expensive day to depart, while Sunday is typically the priciest. Likewise, travel timing matters significantly — January and February tend to offer the lowest average fares, whereas July and December peak with holiday demand.

So book whenever it suits your schedule — but aim to fly midweek and avoid peak seasons when possible.

Myth #3: There is a Perfect Time to Book

Just as no single weekday guarantees savings, there’s no universal ‘ideal’ window for booking every flight. With airfare volatility driven by destination, season, demand surges, and airline inventory management, timing must be considered contextually.

That said, aggregated industry data offers useful benchmarks. CheapAir’s analysis suggests booking domestic flights roughly 70 days before departure yields optimal value on average. For international trips, the sweet spot falls between 1.5 and 5 months ahead — aligning with typical planning cycles for longer journeys.

This aligns with broader behavioral trends: leisure travelers often plan vacations months in advance, while business travelers may book last-minute. Neither approach is inherently ‘wrong’ — but understanding these patterns helps set realistic expectations.