What is the best day to book flights?

Key takeaways

At Kiwi.com , we cut through the noise with data-backed insights and practical tips to help you book a flight at the best price possible. Here’s what you need to know upfront:

• There’s no universal “best day” to book flights, but Sundays often show slightly cheaper fares in Europe.
• Flight prices fluctuate constantly based on demand, seasonality, and route competition.
• Tuesdays and Wednesdays tend to be cheaper days to fly, not necessarily to book.
• Booking too close to departure usually means higher prices, especially during peak travel periods.
• Using smart tools like Google Flights and setting price alerts can save you big.

Ready to dive deeper? This guide breaks down airfare pricing, timing strategies, and insider hacks so you can fly domestically or internationally without breaking the bank.

When do flight prices drop?

Understanding when flight prices drop is like trying to predict the weather. While there are patterns, nothing is guaranteed. As it turns out, airlines adjust fares dynamically based on the number of seats remaining, demand, and global events. Yet, there are a few things you should keep in mind.

For European travellers, the “golden window” to book short-haul flights (think city breaks within Europe) is typically 1 to 3 months before departure. Data from Which? shows that fares often hit their lowest between 5 and 26 weeks out, depending on the route and season. On the other hand, for long-haul flights (Europe to Asia, the US, or beyond), the sweet spot is usually 2 to 6 months ahead of your trip.

Why do prices drop during these windows? Airlines might be trying to fill unsold seats, or they could be running sales and promotions like Black Friday or “Travel Tuesday.” Sometimes, seats get re-released after cancellations, causing a temporary dip in prices. But these opportunities can be fleeting; just blink, and you might miss them.

That being said, if you’re flexible, keep an eye on fare fluctuations during these periods. Use tools like Google Flights or Kiwi.com ’s price alerts to track prices and jump on deals when they appear. Just remember: waiting too long can backfire, especially for popular destinations or peak travel seasons.

Is Tuesday still the best day to book flights?

You’ve probably heard the old travel myth: “Book on Tuesday for the best deals.” Well, it was debunked a while ago.

Google Flights’ analysis of billions of fares shows that booking on Tuesday only saves you about 1.3% on average compared to the most expensive days. That’s basically noise in the grand scheme of airfare pricing. The truth is simple: there’s no fixed “cheapest day” to book flights. Prices move constantly based on demand, season, and route.

What about flying on a Tuesday? That’s a different story. Tuesdays and Wednesdays are often the cheapest days to fly because fewer people want to travel midweek. Fridays, Sundays, and Mondays tend to be pricier. So, if you can be flexible with your departure date, aim for midweek flights to save.

Of course, timing is only one part of the booking equation. For a more human perspective on how Kiwi.com helps travelers make smart decisions, take a look at these Kiwi.com reviews , shared by flight crew members who see travel play out every day.

Do flights get cheaper closer to departure?

Thinking last-minute flights are your ticket to savings? Not always.

For popular routes and peak travel periods, like school holidays or summer vacations, prices usually rise as the departure date approaches, and people start booking flights for easter for example. Airlines know demand is high, so they hike fares accordingly. Data from Google Flights confirms that the lowest prices for busy times often appear weeks or even months before you fly.

That said, there are exceptions. On quieter routes or off-peak dates, airlines sometimes drop prices at the last minute to fill empty seats. Low-cost carriers in Europe, like Ryanair and easyJet, occasionally slash fares for midweek flights when planes are half-empty.

If you’re hunting for last minute deals, treat them as a bonus rather than a plan. For guaranteed savings, aim to book 1 to 3 months ahead for short-haul trips and 3 to 6 months ahead for peak season or long-haul flights.

Factors influencing flight prices

Flight prices don’t just drop from the sky; they’re influenced by a cocktail of factors that can make fares jump or plunge. Understanding these can help you spot the best deals and avoid paying too much.

Seasonality & school holidays

Demand spikes during school holidays and major travel seasons. In Europe, January is usually the cheapest month to fly short-haul because demand is low after the Christmas rush.

But expect prices to soar during Easter, summer holidays (July–August), and Christmas/New Year. School calendars vary by country, but these peak periods consistently push fares higher.

Route competition

More airlines competing on a route usually means lower prices. Routes served by low-cost carriers like Ryanair, easyJet, and Wizz Air often have aggressively low base fares and frequent promotions. Secondary airports (think London Stansted instead of Heathrow) also tend to offer cheaper tickets thanks to lower fees and intense competition.

Fuel costs & global events

Jet fuel prices are a huge chunk of airline operating costs (around 30% for European carriers). When fuel prices rise, airlines pass those costs on to passengers through higher fares or surcharges. Conversely, when fuel prices drop, fares can become more affordable, especially on competitive routes.

In turn, global events like geopolitical tensions, wars, or aircraft supply shortages can also push prices up by limiting capacity or increasing operational costs. Additionally, EU climate policies and sustainable aviation fuel mandates add another layer of cost, though subsidies may soften the blow.

Airline sales & flash promotions

Airlines love flash sales to fill seats fast. Look out for Black Friday, Cyber Monday, “Travel Tuesday” deals, and anniversary promos. These sales often have limited travel windows and seats, so you need to act fast. January sales are also popular as airlines try to stimulate demand after the holidays.

Here’s a clear rundown of the key airline sales and flash promotion periods you can expect:

Typically, airlines cluster sales around these key periods:

• Post-Christmas / New Year
  • Big banner sales to stimulate demand after the holidays
  • Typical timing: January–February 2026
• Spring Shoulder
  • Targeted discounts for late spring and early summer travel
  • Typical timing: March–April 2026
• Autumn Shoulder
  • Short, intense “seat sale” bursts for fall and early winter trips
  • Typical timing: September–October 2026
• Black Friday / Cyber Week / Travel Tuesday
  • Site-wide discounts and flash sales across many routes
  • Typical timing: Late November–early December 2026
  • Travel Tuesday falls on December 1, 2026

Use this calendar to plan your booking strategy and set price alerts around these windows to maximize your chances of scoring the best fares.

Booking class availability

Economy class isn’t just one price; it’s a ladder of fare buckets. The cheapest buckets (like “Economy Light” with strict rules) sell out first. Once those seats are gone, prices jump to higher buckets with more flexibility. That’s why you might see sudden price increases when only a few seats remain at a certain fare.

As it turns out, dynamic pricing algorithms constantly adjust these buckets based on demand, departure time, and competitor prices, making airfare pricing a moving target.

Tools & tips for finding cheaper airfares

Ready to save big on your next trip? Here are Kiwi.com’s top tools and strategies to help you book domestic flights or international flights at the best fares.

Setting price alerts

Why hunt for deals manually when you can automate it? Price alerts notify you when fares drop on your chosen routes. Use Google Flights, Skyscanner, or Kiwi.com ’s own price tracking tools to set alerts. This way, you’ll get a heads-up when prices dip, so you can book at the lowest prices without constantly checking.

Mixing airlines & creating your own routes

Don’t limit yourself to round-trip tickets on a single airline. Kiwi.com’s virtual interlining technology lets you combine flights from different airlines, even those that don’t cooperate, to create cheaper, more flexible itineraries. Sometimes booking separate legs with different carriers can save you 20–25% compared to traditional round-trips.

Just remember: if you book separate tickets, you might not get protection if a connection is missed, so allow plenty of time between flights.

Using direct-flight filters efficiently

Direct flights are convenient but often pricier. Use filters on Google Flights or Kiwi.com to compare direct vs. connecting flights. If you value convenience and time, direct flights might be worth the premium.

But if you’re chasing the best deals, consider short-haul connections as they can be significantly cheaper and open up more route options.

How to compare across multiple airlines quickly

Speed is key when hunting deals. Use metasearch engines like Kiwi, Google Flights, Skyscanner, or Momondo to scan hundreds of airlines and routes in seconds.

These tools show you the best price options, nearby airports, and flexible dates, so you can spot the cheapest day to fly or the cheapest month to visit popular destinations.

Final thoughts - how to always find the cheapest flights

Finding the best day to book flights isn’t about a single magic date; it’s about understanding patterns and using smart tools. Book your flights with enough lead time (usually 1–3 months for short haul, 3–6 months for peak or long haul), fly midweek when possible, and be flexible with airports and routes.

Set price alerts, mix and match airlines, and keep an eye out for flash sales. Remember, the cheapest day to fly is often Tuesday or Wednesday, while the best day to book might just be whenever you find a good deal.

At Kiwi.com , we’re here to make air travel cost-effective and straightforward. Ready to save big on your next trip? Start your search today and let us help you find the best fares for your next adventure.

FAQs

Flight Pricing FAQs

What time do flight prices drop on Tuesday?

Flight prices don’t drop at a specific time on Tuesday. The belief that Tuesday afternoons offer the best deals is outdated. Airlines adjust fares dynamically throughout the day and week based on demand, competition, and seat availability. Instead of waiting for a certain hour, setting price alerts is the most reliable way to catch real-time price drops.

Are flights cheaper on Tuesdays?

Flights are often cheaper to fly on Tuesdays and Wednesdays due to lower midweek demand. However, booking flights on a Tuesday does not guarantee cheaper fares. The day you travel typically affects the price more than the day you purchase your ticket.

Do flight prices go down at night?

Flight prices can change at any time—day or night—but there’s no consistent pattern of prices dropping specifically overnight. Airlines use automated systems that update fares continuously based on various factors. Using price alerts and flexible date searches is more effective than trying to time bookings by the hour.