Low Fare Calendar

See when it’s cheapest to fly with Southwest Airlines.

How to Use the Southwest Low Fare Calendar

Choose Your Route

Enter your departure and destination cities to start searching.

Check the Calendar

Browse the low fare calendar to see the cheapest flight dates at a glance.

Book and Save

Pick the lowest airfare and complete your booking — simple as that!

Find Cheapest Dates
Low fare calendar showing cheapest departure and return dates London–Barcelona, September 2025.

Easily find the cheapest dates to fly

If you’re flexible with your travel plans, our low fare finder Southwest tool helps you avoid overpaying for flights. Use the Southwest low fare calendar to quickly see which days have the lowest prices and book when it’s cheapest. Instead of checking one date at a time, you get a clear view of fares across the month, making it easy to compare options, pick convenient dates, and grab tickets at the lowest airfare.

Low fare calendar with airline filter: Vueling, Ryanair, Jet2, easyJet, British Airways.

Filter by airlines to see their lowest fares

Want to compare different carriers? With our flight price calendar, you can filter results by airline, not only Southwest Airlines, but also American, Delta, United, and others that operate on the same routes. This way, you can easily check if Southwest is the cheapest option or if another airline offers a better deal. The calendar gives you a clear picture of fares across multiple airlines, helping you choose the most convenient and affordable flight for your trip.

Frequently Asked Questions

Answers to common queries about our low fare calendar and how it helps you secure the best deals on airfare.

Message us
What is the Southwest Low Fare Calendar?
The Southwest fare calendar is a tool that shows ticket prices across an entire month, helping you quickly identify the cheapest days to fly. It also works with Rapid Rewards points, making it easy to find the lowest redemption rates alongside cash fares.
How do I use the Southwest Low Fare Calendar to find cheap flights?
Enter your departure and destination, then choose the Flexible Dates option to see fares for the entire month. The calendar highlights the lowest prices per day, letting you compare and secure Southwest cheapest flights without guessing.
What is the cheapest day to fly with Southwest?
Tuesdays and Wednesdays are usually the cheapest days to fly Southwest, while Fridays and Sundays tend to be the most expensive. Using the Southwest low fare finder shows these patterns clearly, so you can plan around the best days to fly Southwest.
What is the best time to book Southwest flights?
For domestic travel, the best time to book Southwest flights is typically 3 to 6 weeks before departure. For peak periods like holidays and summer, booking 2 to 3 months in advance is recommended. The Southwest fare calendar helps you monitor price changes and find the right moment to lock in your trip.

Plan smarter with the Low Fare Calendar.

Southwest fares change based on demand, the season, and when you book. The Southwest fare calendar lets you look at entire months at a time and easily spot the cheapest travel days. Travelers usually discover that January, February, September, and October are the least expensive months to fly Southwest, while peak summer and holiday weekends have higher fares. If you can be flexible, flying midweek on Tuesdays and Wednesdays typically gives you the lowest prices. The calendar provides a clear view of when to book the cheapest Southwest flights.


The Southwest low fare calendar also acts as a best fare finder by displaying both cash fares and Rapid Rewards points next to each other. Whether you are flying short distances like Dallas to Houston or longer trips such as Chicago to Las Vegas, the calendar points out the lowest available fares. By checking the Southwest fare calendar often and using flexible dates, you can find hidden Southwest flight deals and make the most of your Rapid Rewards points. Start planning today with the low fare calendar to find cheap Southwest tickets and confidently book your next trip.

Find the cheapest days to fly

Use the low fare calendar to see prices by day and pick the lowest airfare.

Explore Fares