Southwest Airlines Flights from Denver to Jacksonville

Southwest Airlines on this route

Denver is a Southwest Airlines hub, so Southwest Airlines typically offers several daily departures on DEN–JAX, with nonstop service where demand supports it and connections through its other hubs otherwise. The nonstop flight time is about 3h 36m.

Fare classes available: Basic, Choice / Choice Preferred, Choice Extra. Southwest does not charge change fees on any fare; you pay the fare difference if the new flight is more expensive.

The lowest one-way fare we have on record for this route is $202 on Southwest. Fares like that usually show up on off-peak days and for travel booked a few weeks out; an agent can check whether a similar fare is available for your dates.

Because Delta Air Lines treats Jacksonville as a hub, this pairing tends to have frequent departures throughout the day. American Airlines and Southwest Airlines also compete here, which keeps fares in check.

At 1,445 miles and about 3h 36m nonstop, this is a long domestic sector where the choice of airline matters for comfort: seat pitch, Wi-Fi, and a meal option vary more than the fare does. Overnight and first-departure flights are usually cheapest.

When to fly

West Coast and Mountain departures spike over summer holidays and the December break; January (after New Year), late April, May, and September are usually the cheapest windows.

Tuesday, Wednesday, and Saturday departures are usually the cheapest days on domestic routes; Friday and Sunday are the most expensive. Early-morning and late-evening flights are often priced below the midday departures.

For domestic travel, booking three to eight weeks ahead usually captures the best price. Inside two weeks, fares climb; more than four months out, airlines have not yet released their cheapest inventory.