Best Day to Book Flights: The Complete Guide to Saving Big on Airfare

Saving money on flights is something we all want to do. Airfare is often a major expense for any vacation or business trip, whether you're going to the beach for a weekend getaway or traveling across the country to visit family. However, the good news is that, when you book your trip, it's as important as where you're going.

We've done all the research for you at Cheap Fare Freak. In this guide, we will cover the best day to book a flight, how early you should book, what information you need to book, and everything else you need to know to get the cheapest flight possible.

Let's get into it.

The Best Day to Book Flights (And Why It Matters)

Have you ever thought about if there's a specific day of the week that it's better to buy a plane ticket? Well, sort of.

Numerous studies and travel industry data have shown that Tuesday and Wednesday are the best days to book flights in the USA. Here's why.

Usually, on Monday nights, airlines will announce their sales and fare changes. On Tuesday morning, other airlines have matched the fares, so there's more competition and lower fares available. Those lower prices are likely to stick around until Wednesday before prices begin to rise again.

On the other side, Friday, Saturday, and Sunday tend to be the worst days to book. Leisure travelers are shopping and spending on weekends, and airlines know it. In general, the higher the demand, the higher the price.

Let's take a look at the days of the week:

• Monday: Fares start to drop in the evening as airlines kick off new sales
• Tuesday: One of the best days to book, many sales go live and competitors match prices
• Wednesday: Still a great day, prices often stay low from Tuesday's movement
• Thursday: Decent, but prices can start to inch back up
• Friday: Prices start climbing as weekend demand rises
• Saturday: Mixed results, sometimes good for last-minute deals, but often expensive
• Sunday: Generally one of the pricier days to book

That is not to say that you should be obsessing about Tuesday every time. The pricing disparity could be $20-$50 for domestic flights, which is real money, but for a limited-time sale that got cut on a Thursday, that's not worth it. When you see a deal, jump on it, airlines won't keep it around for long.

The Best Time of Day to Book Flights

The time of day may be another factor, in addition to the day of the week. Fares are slightly cheaper in the early morning and late evening. This is because there are fewer people looking around and purchasing during those times, and some airlines even revise their prices overnight.

If you're ready to get the best deal, consider looking for rates from midnight to 6 AM or on a Tuesday or Wednesday morning. This may seem like a radical idea, but for those who are flying cross-country, the savings can make the difference.

How Far in Advance Should I Book a Flight?

This is one of the most frequent questions we get, and it's dependent on where you're flying and when.

For Domestic Flights in the USA

Within the U.S., the ideal time frame is usually one to three months prior to the flight date. According to studies by travel booking sites, the best time to book domestic flights is 21 to 60 days ahead.

For domestic trips here's a general guideline:

• More than 6 months out: Prices are often OK but rarely the cheapest. Airlines don't have a full picture of demand yet.
• 3 to 6 months out: Prices start to become more predictable. Good for popular holidays and peak travel times.
• 1 to 3 months out: This is the sweet spot. Great fares are widely available, and you have flexibility.
• 2 to 3 weeks out: Prices start to rise. You may still find decent deals, but options shrink.
• Less than 1 week out: Last-minute fares can be extremely high, especially on business routes. Avoid unless you have no choice.

For International Flights

If you're traveling abroad (e.g., New York to London or Los Angeles to Tokyo), you need more lead time. The general guideline is to plan 3-6 months ahead for international travel.

If you want to travel during key periods, such as the summer (June through August), or the winter holidays, it's wise to book even further ahead of time, at least 4-6 months in advance.

For Holiday Travel

When travelling during Thanksgiving, Christmas, New Year's or any major American holiday, make your booking as early as you can. That is 3-5 months ahead of time for the best rates. Tickets can literally double or triple in cost if you wait until a few weeks before.

How Far in Advance Can I Book a Flight?

So you may ask yourself: how early can you book a flight?

The major airlines of the United States begin selling tickets 330 to 365 days ahead of time. This also translates to being able to book a flight nearly a year before you intend to go.

Let's take a quick look at the typical booking windows for the major airlines in the USA:

• American Airlines: Up to 331 days in advance
• Delta Air Lines: Up to 331 days in advance
• United Airlines: Up to 331 days in advance
• Southwest Airlines: Typically opens around 6 months (roughly 180 days) in advance
• Spirit Airlines: Typically up to 180–270 days in advance
• JetBlue: Up to 331 days in advance

It is important to remember that making a year-ahead booking does not necessarily mean that you will receive the best price. Dynamic pricing is a tactic used by airlines in which fares constantly fluctuate depending on the demand, competition, and a variety of other factors. Sometimes it's worth waiting a couple of months to book, since you may end up paying more if you book too early.

The bottom line: While you can book as far as a year ahead of time, most internal flights will be at their lowest prices 1-3 months before the flight.

When Is the Cheapest Time to Fly?

The best day to book is one thing. But the cheapest days and times to actually fly is another.

Cheapest Days to Fly

• Tuesday and Wednesday are consistently the cheapest days to fly domestically. Since fewer people travel mid-week, airlines lower prices to fill seats.
• Saturday can also be surprisingly affordable, especially for leisure routes.
• Friday and Sunday are the most expensive flying days because everyone's heading out or coming home for the weekend.

Cheapest Times to Fly

• Early morning flights (5 AM–7 AM): These are some of the cheapest tickets available. Most people don't want to wake up that early, so demand is lower. Bonus: fewer delays.
• Late night flights (after 8 PM): Similar story, fewer takers means cheaper seats.
• Midday flights: These can be hit or miss. Sometimes good, sometimes not.

Cheapest Seasons to Fly

If your travel dates are flexible, flying during the off-peak season can save you hundreds of dollars.

For domestic US travel:

• January and February (after the holiday rush): Some of the cheapest airfare of the year
• Late August and September: School is back in session, families stop traveling, prices drop
• November (excluding Thanksgiving week): A great time to fly before the holiday madness begins

The most expensive times to fly are:

• Summer (July–August)
• Thanksgiving week
• Christmas and New Year's week
• Spring Break (March–April)

What Info Do You Need to Book a Flight?

Have all of your items prepared before you sit down to purchase your ticket. Nothing is worse than locating a great deal, then losing it as you're trying to locate your passport number or credit card.

Here's all the information you need to make a flight booking:

1. Traveler's Full Legal Name

Your name has to be the same name as on your government-issued ID or passport. Avoid using a nickname. Write your full first, middle (if necessary), and last name as they are on your ID.

2. Date of Birth

Airlines will need your date of birth for all passengers. This is particularly necessary when travelling internationally and for applications such as TSA PreCheck.

3. Contact Information

You'll need:

• An email address (for your booking confirmation and any flight updates)
• A phone number (in case the airline needs to reach you about changes or cancellations)

4. Payment Method

Be sure to have your credit or debit card and billing address. You could consider using a travel rewards credit card, you'll get points or miles for the purchase and can use them for future travel.

5. Government-Issued ID or Passport Details

If you are travelling within the USA, you will need a REAL ID-compliant driver's license or a US passport. For International flights: Passport Number, Expiration Date and Country of Issue.

If you are travelling internationally, be sure to ensure that your passport is valid for a minimum of 6 months after your travel date.

6. TSA PreCheck or Known Traveler Number (If You Have It)

For those who are enrolled in TSA PreCheck, Global Entry or CLEAR, they should have their Known Traveler Number (KTN). Please input it when booking so that it can be listed on your boarding pass. This will help you to pass through security more quickly.

7. Frequent Flyer Number

For those who are part of an airline's loyalty program, be sure to input your frequent flyer number at the cashier. Miles will be accumulated for the journey.

8. Travel Dates and Destination

This one seems self-explanatory, but just be sure to check your dates before confirming. Things do get confused more than you would expect, particularly for red-eye flights that go over midnight, or if you neglect to take into account time zone differences.

7 Tips to Always Find the Cheapest Flights

It's good to know the best day to book. However, there are a couple more tricks to ensure that you get the best price:

1. Use Incognito Mode When Searching

Some travel booking websites keep a record of your searches and increase the price if they see that you are interested in the same route more than once. Shop for flights using a private or incognito browser window.

2. Set Up Price Alerts

Set up price alerts for your route with Google Flights, Hopper, or Kayak. Fares will be automatically informed via email or notification, so there is no need to constantly check.

3. Be Flexible with Your Dates

Moving a day or two can save you a lot of money. This means you may save anywhere from $50 to $200 or more on a single ticket if you can travel out on a Tuesday as opposed to Friday.

4. Compare Nearby Airports

If you live close to more than one airport, check them all. Often, there are smaller airports nearby that are much less expensive to fly out of than the main airport. For instance, there are three airports in the New York area: JFK, LaGuardia and Newark. There may be a significant price difference among them.

5. Book One-Way Tickets Separately

In some cases it's more economical to book a pair of one-way tickets, even if one is on a different airline, than to book a round trip ticket with a single airline. Always check both options.

6. Don't Forget Budget Airlines

Domestic carriers such as Spirit, Frontier and Allegiant can provide very affordable base fares. Be aware of baggage fees and seat selection charges; they can really add up if you are not careful.

7. Clear Your Cookies and Cache

Like using incognito mode, clearing your browser cookies can prevent websites from tracking your search history and potentially inflating prices.

Looking for the best flight deals in the USA? Visit Cheap Fare Freak and never overpay for a flight again.

What About Last-Minute Flight Deals?

Sometimes life happens and you need to book a flight with very little notice. So, is it possible to find a cheap last-minute flight?

The short answer: it depends.

On leisure routes (think beach destinations, ski resorts, or popular vacation spots), last-minute fares tend to be very high because the demand is strong. Airlines know people want those seats.

However, on business routes (like short hops between major cities), you can sometimes find last-minute deals because airlines want to fill empty seats that business travelers didn't end up booking.

Your best bet for last-minute deals is to check directly with the airline, use Google Flights' "flexible dates" feature, or sign up for deal alerts from sites like Cheap Fare Freak. Sometimes airlines release last-minute sales to offload unsold inventory, but you have to be ready to move fast.

How Airline Pricing Really Works

Understanding a little about how airlines price their tickets can help you be a smarter shopper.

Airlines use something called dynamic pricing, the price of a seat changes constantly based on supply and demand. As a flight fills up, prices go up. If a flight has lots of empty seats close to departure, the airline may drop prices to attract buyers.

Airlines also use fare classes, different categories of seats within the same cabin. Even in economy class, there might be 8 or more different price tiers. The cheapest fare class sells out first, and once it's gone, the next tier (at a higher price) opens up.

This is why prices seem to jump suddenly, and why acting fast when you see a good deal is so important. That low fare might only be around for hours, not days.

Final Thoughts: The Best Day to Book Flights

Let's wrap it all up.

The best day to book flights is Tuesday or Wednesday. That's when airline sales are live, competition between carriers is highest, and prices tend to be at their lowest for the week.

For timing, aim to book 1 to 3 months before your departure for domestic flights, and 3 to 6 months out for international travel. If you're flying around a major holiday, book even earlier.

Make sure you have all your info ready before you book, your legal name, date of birth, contact details, payment method, and any travel documents. Being prepared means you won't miss a great fare while scrambling to find information.

And remember: the best fare isn't always the one you planned for. Be flexible with your dates, watch for sales, set up price alerts, and always compare your options. At Cheap Fare Freak, we do the hard work of hunting down deals so you can travel more for less.

Happy travels, and happy saving!