| Nonstop Flights: Austin to/from Orlando, San Francisco, or San Diego $51-$59 r/t â Frontier / Spirit Frontier or Spirit have round-trip flights from Austin (AUS) to Orlando, San Francisco, or San Diego (MCO, SFO, SAN) for $51-$59, NONSTOP. Flights March to April. No Sunday departures. Very few weekends available. Origin/Destination reversible. To clarify: Only Orlando has discounted Frontier and Spirit fares, all other destinations are Frontier discounts. You can also save an additional 16% off your Hotel or up to $150 for Flight+Hotel packages on CheapTickets by using the âWANDERLUSTâ or âADVENTURE150â coupon codes at checkout (before finalizing your booking). Note: Frontier and Spirit fares do not include a free carry-on bag. Only a small personal item, like a Jansport City Scout backpack is free. You can avoid paying for seat selection if you accept the randomly assigned seat prior to boarding. Note: Frontier and Spirit seats only have 28-inches of pitch; 2-to-3 inches less space than most other airlines. Iâm currently using the Jansport Right Pack as my âpersonal itemâ when I fly Frontier and Spirit. Which is slightly more than expensive than the Jansport City Scout because its fabric is Cordura instead of Polyester. Both have the same dimensions which are: 18â³ x 13â³ x 8.5â³. There is half-an-inch of extra depth than what is officially allowed by Frontier and Spirit, but it has never been a problem for me. The bag has a large main compartment, which makes it ideal for stuffing as much as you can into the limited amount of space. Want a notification sent straight to your phone when any new deals are found? Join our Telegram channel and never miss another deal. We donât charge a subscription fee. All of our deal notifications are available for FREE via Instagram, Facebook, Twitter, Telegram, our Webpage, and our E-mail list. If you are paying someone a subscription fee for our content, you are being ripped off. Read More Nonstop Flights: Austin to/from Orlando, San Francisco, or San Diego $51-$59 r/t â Frontier / Spirit . | 