About Southwest Airlines
Southwest is one of those airlines that doesn't fit neatly into a box. It's technically a low-cost carrier, but it's been around long enough and grown large enough that calling it "budget" feels a bit reductive. It operates exclusively within and around the Americas — no transatlantic ambitions, no global alliances. What it does have is a domestic network that's genuinely hard to beat: 1,986 non-stop routes across 122 airports, with Denver (DEN) anchoring the whole thing at 95 routes. The model is point-to-point rather than hub-and-spoke, which means you're often flying direct when other carriers would route you through Atlanta or Dallas.
Why fly Southwest Airlines?
The honest reason most people fly Southwest is the bags. Two checked bags fly free — no asterisks, no elite status required. That alone changes the math on a lot of trips. Beyond that, the no-change-fee policy is genuinely useful if your plans are even slightly fluid, which mine always are. The Rapid Rewards program is straightforward compared to some loyalty schemes I've tried to decode at 1am in a hostel. If you're moving between US cities regularly, or eyeing a cheap hop down to Mexico or Costa Rica, Southwest's 42 Mexican routes and 8 Costa Rica connections mean it's not just a domestic play. Service is casual and sometimes actually fun, which I'll take over stiff any day.
Southwest Airlines hub airports
- DEN Denver — 95 Southwest Airlines routes from USA
- MDW Chicago — 81 Southwest Airlines routes from USA
- BNA Nashville — 80 Southwest Airlines routes from USA
- DAL Dallas — 79 Southwest Airlines routes from USA
- BWI Baltimore — 79 Southwest Airlines routes from USA
Top destination countries on Southwest Airlines
- USA — 1,894 Southwest Airlines routes
- Mexico — 42 Southwest Airlines routes
- Puerto Rico — 11 Southwest Airlines routes
- Dominican Republic — 8 Southwest Airlines routes
- Costa Rica — 8 Southwest Airlines routes
- Jamaica — 7 Southwest Airlines routes
- Belize — 3 Southwest Airlines routes
- Aruba — 2 Southwest Airlines routes
Tips for booking Southwest Airlines
Southwest doesn't assign seats — you board in groups based on check-in time, so set an alarm for exactly 24 hours before your flight and check in the second it opens. Miss that window and you're picking from whatever's left. There's no GDS or third-party booking; you buy direct at southwest.com, full stop. The airline isn't part of any major alliance, so don't expect to earn miles on partner carriers. PHX to HNL is the longest route in the network at 4,689 km — a solid option if you're island-bound from the Southwest. Fares are generally competitive on busy domestic corridors, but always compare; it's not always the cheapest option.
Frequently asked questions about Southwest Airlines
Where does Southwest Airlines fly?
Southwest Airlines operates 1,986 routes primarily across the United States, with major service to Mexico and Puerto Rico. The airline focuses on domestic and leisure destinations throughout North America.
What is Southwest Airlines's main hub?
Denver International Airport (DEN) is Southwest Airlines's main hub, serving as a central connection point for their network.
Is Southwest Airlines a low-cost carrier?
Yes, Southwest Airlines operates as a low-cost carrier, offering competitive fares and a simplified service model across its extensive domestic and regional network.
When should I book a Southwest Airlines flight?
For the best fares, book Southwest flights 1-3 months in advance, though prices can vary based on demand and travel dates. The airline typically offers multiple fare classes, so compare options based on your flexibility and needs.
What is Southwest Airlines's baggage policy?
Southwest Airlines allows two free checked bags per passenger, which is generous compared to many carriers. Carry-on bags are also included, making it an economical choice for travelers with luggage.