Southwest Low Fare Calendar 2026 — Cheapest Days to Fly

Stop overpaying for flights. The Southwest Airlines Low Fare Calendar is one of the most powerful and most overlooked fare-finding tools available to U.S. travelers today, and if you're not using it, you're almost certainly leaving money on the table.
Unlike traditional flight search engines that force you to check prices one date at a time, the Southwest Low Fare Calendar displays an entire month's worth of lowest available fares in a single, easy-to-read grid. In seconds, you can see which dates are cheapest, which days are most expensive, and exactly how much you save by shifting your travel by just a day or two. It's the budget traveler's shortcut to smarter booking no guesswork, no endless clicking, no surprises.

How to access it: Visit Southwest.com Flights Low Fare Calendar, enter your origin and destination, and let the grid do the work.

Pro Tip from Cheap Fare Freak: Always factor in Southwest's 2026 bag fee changes before comparing prices. The calendar displays the entry-level Basic fare the lowest price point so check whether your trip needs a checked bag, which may affect your true total cost versus competing carriers.
Whether you're planning a family vacation to Orlando, a quick weekend trip to Las Vegas, or a business run to Chicago, the Southwest Low Fare Calendar takes the stress out of finding a cheap flight. Book smart. Fly cheap. Start with the calendar.
Find Southwest Low Fare Calendar deals and route-specific fare alerts at CheapFareFreak.com
Fares, policies, and availability are subject to change. Verify all pricing directly with Southwest Airlines at Southwest.com before booking.