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Find the cheapest days for Southwest flights: save more

TL;DR:

  • Southwest fares fluctuate frequently based on demand and route-specific factors, not fixed schedules.
  • Tuesdays and Wednesdays often offer lower fares, but flexibility and checking tools matter most.
  • Using the Low Fare Calendar and booking early can help travelers find the best deals consistently.

Southwest fares can feel like a moving target. One day you spot a $79 one-way deal, and the next morning that same seat costs $189. If you’ve ever refreshed the booking page three times in a week wondering whether Tuesday is actually cheaper or if that’s just an old travel myth, you’re not alone. Millions of budget travelers wrestle with this exact question every year. The good news is that Southwest’s pricing system does follow patterns, and with the right tools and a flexible mindset, you can consistently find lower fares. This guide breaks down exactly when and how to find the best prices.

Table of Contents

Key Takeaways

Point Details
No single cheapest day There’s no guaranteed day each week when Southwest flights are always lowest, but midweek fares are often best.
Use the Low Fare Calendar The Low Fare Calendar shows you a visual layout of the cheapest days for any route, saving you the guesswork.
Maximize flexibility Being flexible with your travel dates and using fare alerts helps you catch the lowest prices when they appear.
Combine saving strategies Pairing the right booking times with tools like Companion Pass or Rapid Rewards can boost your overall savings.

How Southwest price patterns work

Southwest Airlines operates differently from most major carriers. It doesn’t sell seats through third-party booking sites like Expedia or Google Flights, which means its pricing moves independently of the broader airline market. That independence creates both opportunity and confusion for travelers trying to track fares.

Fares on Southwest can change multiple times within a single week. The airline adjusts prices based on seat demand, how far out the flight is, and what competitors are doing on similar routes. This is important because it means no single rule covers every route or every travel period.

Infographic showing best days to fly Southwest

One of the most persistent myths in budget travel is that Tuesday at midnight is always the cheapest time to book any flight. For many legacy carriers, this used to hold some truth because airlines would release sale fares on Monday nights and competitors would match them by Tuesday morning. Southwest, however, doesn’t always follow that rhythm. Its sales and fare drops can happen on any day, and they’re often tied to route-specific demand rather than industry-wide fare wars.

Here’s a quick look at how Southwest’s pricing tiers generally break down:

Fare type Typical price range Flexibility
Wanna Get Away Lowest available Non-refundable, transferable credit
Wanna Get Away Plus Mid-range More flexibility, transferable
Anytime Higher Fully refundable
Business Select Premium Fully refundable, priority boarding

For budget travelers, Wanna Get Away fares are the target. These are the prices that fluctuate most and respond fastest to demand changes.

“Use the Southwest Low Fare Calendar to identify the cheapest specific days for any route, as it shows monthly lowest fares at a glance.”

The Southwest Low Fare Calendar is one of the most underused tools in budget travel. It displays the lowest available fare for each day of the month on your chosen route, letting you compare prices visually instead of clicking through dozens of individual date combinations. If you want to understand how cheapest days to fly Southwest actually play out in practice, this calendar is your starting point.

The bottom line on pricing patterns: Southwest’s system rewards flexibility and consistency. Travelers who check fares regularly across a range of dates will almost always find better prices than those who search once and hope for the best.

Does a ‘cheapest day’ exist for Southwest flights?

Let’s cut to the question you actually came here for. Is there one day of the week that reliably delivers the lowest Southwest fares? The honest answer is: not always, but patterns do exist.

Data from fare tracking tools and the Southwest Low Fare Calendar consistently shows that Tuesdays and Wednesdays tend to have more frequent fare drops than other days of the week. This happens for two main reasons. First, Southwest sometimes releases promotional fares early in the week to stimulate bookings for slower travel periods. Second, midweek flights are simply less popular with leisure travelers, so demand is lower and prices follow.

Man checks calendar for cheapest flight days

Here’s how typical fare patterns compare across the week for Southwest:

Day of week Fare likelihood Best for
Monday Moderate Checking for new releases
Tuesday Often lower Booking after fare drops
Wednesday Often lower Midweek departure deals
Thursday Moderate Some good options
Friday Higher Peak demand
Saturday Varies Depends on route
Sunday Often higher Return travel demand

That said, these are tendencies, not guarantees. A route from Dallas to Las Vegas might behave completely differently from a route between Chicago and Orlando. Southwest updates its fares multiple times a week, sometimes reacting to what American Airlines or United just priced on the same corridor.

Here’s a practical approach to finding the lowest fare on any given week:

  1. Check the Low Fare Calendar for your route on Monday to see the baseline.
  2. Note any dates showing significantly lower prices than surrounding days.
  3. Revisit on Tuesday morning to see if fares dropped overnight.
  4. Compare Wednesday prices before making a final decision.
  5. Book by Thursday if you’ve found a strong deal, since weekend prices often climb.

For more detail on timing your purchase, the guide on cheapest days to buy Southwest tickets walks through specific booking windows with route examples.

Pro Tip: Set a fare alert for your route through a travel app or directly on Southwest’s site. When the price drops to your target, you’ll know immediately instead of having to check manually every day.

How to use the Southwest Low Fare Calendar

Knowing that the Low Fare Calendar exists is one thing. Knowing how to use it effectively is where real savings happen. The calendar is built directly into Southwest’s website and requires no extra account or login to access.

Here’s a step-by-step walkthrough:

  1. Go to Southwest.com and start a flight search. Enter your departure and destination airports as you normally would.
  2. Select “Flexible dates” or look for the calendar view option. This switches the display from a standard date picker to a full month grid showing prices for each day.
  3. Scan the calendar for the lowest highlighted fares. Southwest color-codes or labels the cheapest days, making it easy to spot deals at a glance. Look for monthly lowest fares across two or three months if your travel dates are flexible.
  4. Compare both outbound and return dates. A $40 savings on departure day plus $40 on return day adds up to $80 per person. On a two-person trip, that’s $160 back in your pocket.
  5. Book directly once you find the right combination. Don’t wait more than a day or two after spotting a great fare, since Wanna Get Away seats are limited.

Being open to shifting your travel by even one or two days can save $100 or more on a roundtrip. That’s not a small number, especially if you’re traveling with family or planning multiple trips this year.

For broader strategies on reducing airfare costs, the cheap airfare tips guide covers techniques that work across multiple airlines, not just Southwest. You can also find a solid overview of tips for saving on flights that pairs well with the calendar method.

Pro Tip: Midweek departures (Tuesday or Wednesday) and midweek returns consistently show lower prices on the Low Fare Calendar. If your schedule allows it, building your trip around these days is one of the most reliable ways to cut costs.

Real strategies to save even more on Southwest

Once you’ve mastered the Low Fare Calendar and understand the weekly pricing rhythm, you can layer on additional strategies that push your savings even further.

  • Book early when schedules open. Southwest typically releases schedules about six months in advance. The first fares available are often the lowest base prices before demand builds. If you know you’re traveling in summer, start watching in January.
  • Watch for flash sales on Tuesdays and Wednesdays. Southwest occasionally runs limited-time promotions with fares as low as $49 each way. These sales are announced via email and social media, and they sell out fast. Signing up for Southwest’s email list is free and worth it.
  • Use the Rapid Rewards program. Points earned on flights and through the Southwest credit card can cover future tickets entirely. Even occasional travelers can accumulate enough points for a free domestic flight within a year.
  • Pursue the Companion Pass if you fly often. This is one of the most valuable perks in domestic travel. Once earned, a companion flies with you for just the cost of taxes on every flight for the remainder of the calendar year and the full following year.
  • Try open-jaw itineraries. This means flying into one city and out of another. For example, fly into Las Vegas and return from Los Angeles. This can unlock lower fares on both ends and reduce ground transportation costs.
  • Rebook if prices drop. Southwest charges no change fees, which means if the fare on your booked flight drops, you can cancel and rebook at the lower price. The difference comes back as travel credit.

For a broader toolkit of money-saving techniques, the best tips for cheap flights resource and the guide on how to travel for cheap are worth bookmarking.

Pro Tip: After booking, set a reminder to check your fare once a week. Southwest’s no-change-fee policy means you can rebook at a lower price if one appears before your travel date, effectively turning your original booking into a price-lock with upside.

Why chasing ‘the cheapest day’ isn’t enough

Here’s an honest take that most travel guides won’t give you. Obsessing over one specific day of the week to book Southwest flights is a trap. Yes, Tuesdays and Wednesdays show more frequent fare drops. But the travelers who consistently pay the least aren’t the ones who set an alarm for Tuesday morning and refresh the site. They’re the ones who stay flexible.

Flexibility beats any single calendar rule. A traveler willing to fly Wednesday instead of Friday, or to depart from a secondary airport, will almost always outperform someone locked into specific dates hunting for the mythical perfect booking day. The data supports this, and so does the experience of anyone who has tracked fares seriously over time.

The real strategy is to treat fare-hunting as an ongoing habit rather than a one-time event. Check the Low Fare Calendar regularly. Set alerts. Be open to shifting your plans by a day or two. That mindset, combined with the practical tools Southwest provides, is what actually moves the needle on your travel budget. For more on building that habit, the flight booking tips guide offers a solid framework.

Take your travel savings further with our top resources

You now have a clear picture of how Southwest pricing works and how to use the Low Fare Calendar to your advantage. The next step is putting it all together with resources that help you save across your entire trip, not just on the flight.

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At PilotTravelDeals.com, we track deals across flights, hotels, and travel essentials so you don’t have to check a dozen sites. Whether you’re looking to get flight discounts on your next booking, find hotel savings that match your destination, or discover affordable domestic flights for your next trip, we’ve got the tools and guides to help you spend less and travel more. Savings up to 80% are possible when you know where to look.

Frequently asked questions

Are Southwest flights cheaper on certain days of the week?

Southwest flights tend to be cheapest on Tuesdays and Wednesdays, but this varies by route. Always check the Low Fare Calendar for your specific trip to confirm actual pricing.

What is the Southwest Low Fare Calendar?

The Southwest Low Fare Calendar is a built-in tool on Southwest’s website that shows the lowest available fare for each day of the month on your chosen route, making it easy to compare prices without clicking through individual dates.

How far in advance should I book Southwest flights for the lowest price?

Booking as early as possible, ideally when Southwest first releases its schedule about six months out, gives you the best shot at the lowest Wanna Get Away fares before demand pushes prices up.

Can I change my Southwest flight if the fare drops after booking?

Yes. Southwest allows you to cancel and rebook at a lower fare with no change fees, and the price difference is returned to you as travel credit, making it worth monitoring your fare after purchase.

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