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Cheapest Day to Book Southwest Flights
 

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Cheapest Day to Book Southwest Flights
  • Alison Bernard
    By Alison Bernard

    Published Aug 19,2025

Cheapest Day to Book Southwest Flights

Are you tired of overpaying for flights and wondering if there’s a secret to snagging the lowest fares? The truth is, there actually is. When it comes to flying with Southwest Airlines, choosing the cheapest day to book Southwest flights can help you save up to 40% on your next trip. While airfare pricing may feel unpredictable, there are proven patterns and booking strategies that can make a huge difference in how much you pay.

In this detailed guide, we’ll uncover the best days of the week to book, insider money-saving hacks, and expert strategies to help you stretch your travel budget further. Whether you’re planning a family vacation, a business trip, or a last-minute getaway, timing your booking right can unlock major savings.

Why Timing Matters When Booking Southwest Flights

Airlines use dynamic pricing, which means fares can change multiple times a day depending on demand, seat availability, and competition. Unlike many major airlines, Southwest doesn’t publish its flights on third-party booking sites like Expedia or Google Flights — meaning you’ll need to book directly with them.

That’s both a challenge and an opportunity. The challenge is that you can’t easily compare Southwest prices with other airlines in one search. But the opportunity is that Southwest keeps things consumer-friendly:

  • No hidden baggage fees (two free checked bags).

  • Free flight changes and cancellations.

  • Fare refunds in the form of travel credits if prices drop after you book.

That last policy alone makes it worthwhile to track and rebook flights. But knowing the cheapest day to book Southwest flights helps you maximize those savings even more.

What Is the Cheapest Day to Book Southwest Flights?

Best Days of the Week to Book

Industry data shows that Tuesdays and Wednesdays are usually the cheapest days to book Southwest flights. Here’s why:

  • Airlines often release fare sales on Mondays.

  • Competitors (including Southwest) adjust pricing by Tuesday.

  • By Tuesday afternoon or Wednesday, the discounts are in full swing, giving travelers a 24–48 hour window to grab lower fares.

Why Weekends Often Cost More

On Fridays and Sundays, demand spikes. Weekend travelers, leisure flyers, and last-minute bookers tend to push up fares. That’s why you’ll rarely find the best deals on weekends.

Myths vs. Facts About Booking Days

  • Myth: Booking at midnight guarantees the cheapest flight.

  • Fact: Fare adjustments happen throughout the week, and midweek sales generally deliver better savings than late-night searches.

Read Also:- Southwest Airline Rapid Rewards How To Earn or Redeem Points?

Cheapest Times to Fly With Southwest Airlines

The day you fly matters just as much as the day you book. If you’re flexible, you can score even deeper discounts.

Early Morning or Late-Night Flights

Red-eye and very early morning departures are less desirable to most travelers, which makes them cheaper.

Off-Peak Travel Months

  • January: After the holiday rush, demand drops.

  • September & October: Fall travel (before Thanksgiving) is typically very affordable.

Avoiding Holiday Peaks

Flying around Christmas, Thanksgiving, Spring Break, and summer weekends almost always costs more. If your schedule allows, traveling just a few days before or after these peak dates can save you hundreds.

Proven Tips to Save Up to 40% on Southwest Flights

Southwest already has a reputation for affordability, but combining their traveler-friendly policies with smart booking strategies can deliver even bigger savings.

Use the Southwest Low Fare Calendar

This tool lets you compare fares across an entire month. If you’re flexible, it’s the easiest way to identify the cheapest days to fly.

Book During Southwest Sales

Southwest is known for its recurring Wanna Get Away deals, often released on Tuesdays. These sales typically cover travel periods 6–12 weeks out and can slash fares by up to 40%.

Sign Up for Rapid Rewards and Fare Alerts

Joining Rapid Rewards gives you early access to special offers, while fare alerts notify you when prices drop on routes you’re watching.

Take Advantage of Free Changes

If you book a flight and notice the fare drops later, you can rebook at the lower price without penalties. This flexibility is one of the biggest advantages Southwest offers.

Insider Hacks for Finding the Cheapest Day to Book Southwest Flights

Beyond the basics, a few expert tricks can help you consistently lock in the best deals.

  • Set Fare Alerts on Tuesdays: Since sales often start on Mondays, Tuesday is when discounts go live and alerts become most valuable.

  • Track Prices Over a Few Weeks: Southwest’s fares are dynamic, so monitoring for 2–3 weeks before booking often pays off.

  • Use Points + Cash: If you’re a Rapid Rewards member, combining points with cash can unlock maximum value — especially during fare sales.

  • Book One-Way Instead of Round-Trip: Sometimes splitting your trip into two one-way flights can be cheaper than a round-trip fare.

Final Thoughts 

Southwest is already one of the most traveler-friendly airlines in the U.S., but knowing the cheapest day to book Southwest flights gives you a competitive edge. By booking on Tuesdays and Wednesdays, using the Low Fare Calendar, and traveling during off-peak times, you can cut your costs by as much as 40%. For more information visit Top Airline Rules or call +1-855-262-6888 now!

FAQs 

Q.1 Is Tuesday always the cheapest day to book Southwest flights?

Not always, but Tuesdays and Wednesdays consistently deliver lower fares compared to weekends.

Q.2 How far in advance should I book with Southwest?

For domestic flights, 6–8 weeks before departure is often the sweet spot. For peak seasons, book 2–3 months ahead.

Q.3 Does Southwest offer last-minute deals?

Occasionally, yes — but they’re limited. Last-minute fares are usually more expensive unless tied to a rare flash sale.

Q.4 Can I rebook if prices drop after I book?

Yes! This is one of Southwest’s biggest advantages. You can rebook at the lower fare without paying any change fees.

About the author
Alison Bernard
Alison Bernard

Alison Bernard, a seasoned travel expert at Topairlinerules, has been shaking up the world of travel writing since 2022 with her captivating storytelling and practical advice. She’s all about sharing the best tips for snagging budget-friendly flights and unforgettable adventures, making it easier for travelers to explore the globe without breaking the bank.

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