Frontier is a weird airline. They have 50% off sales that require promo codes. Round-trip flights for $30. They charge for carry-on bags. And they are one of the last airlines to still have a miles-based loyalty program (only a few days left of this for American).

Now, they are offering double loyalty miles on all flights through September 30.

If you flew non-stop from Orlando to San Francisco ($94), which is around 2,500 miles, you would earn about 5K loyalty miles. Make it a round-trip and you’d have around 10K miles, which can be enough for a one-way flight on any domestic route in Frontier’s network.

Here are some details on the promo:

Frontier also announced a few new routes today, and it continues their recent expansion in Florida:

Cincinnati to Cancun? Weird route!

They have fare “sales” several times a week, including a new one today. Here are a few sample one-way deals:

From Orlando:

From Denver:

As a warning, many people refuse to fly Frontier. Check out why, and my tips on how you can survive flying Frontier here.

I’ve flown nearly 20K miles on Frontier in the past year, so feel free to send me any questions or concerns you have about flying with them.

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Have a great day!