Frontier Airlines Flash Sale: Buy a Flight, Get a Future Travel Voucher [Book by September 12]

Updated: September 9, 2025, 11:23am CDT

Edited by:

Jump to Section

Table of Contents

How the Frontier BOGO Sale Works
Final Thoughts

We may be compensated when you click on product links, such as credit cards, from one or more of our advertising partners. Terms apply to the offers below. See our Advertising Policy for more about our partners, how we make money, and our rating methodology. Opinions and recommendations are ours alone.

Frontier Airlines is running an intriguing limited-time flash sale with fares starting at just $16 one-way.

To take advantage of this sale, you’ll need to book by September 12 for travel through November 16, 2025. Using promo code BOGO, you could also earn a $50 flight voucher for a future trip in early 2026.

Let’s go over the details of Frontier’s latest flash sale.

How the Frontier BOGO Sale Works

Frontier Airlines‘ latest promotion is all about rewarding travelers with fall plans. You can score ultra-low fares starting at $16, and after booking with promo code BOGO and completing your flight, you’ll receive a $50 voucher for future travel — a simple way to save now and get credit toward your next trip.

You have until September 12 to book your trip, with travel valid through November 16, 2025. The $50 voucher can be used for travel between January 5 and March 5, 2026. Flights are available Monday through Thursday and on Saturdays during the sale period — meaning you can’t travel on Fridays or Sundays.

Frontier Airlines A320neo plane at gate SNA — Frontier frequently runs sales, but this one is especially generous — not only offering ultra-low fares but also a $50 voucher valid for travel in the first few months of 2026. Image Credit: Ryan Smith

For example, during this sale, you could fly from Raleigh (RDU) to New York (LGA) for just $16 — one of the cheapest fares we found.

The absolute lowest prices are available to Discount Den members, which is Frontier’s subscription program that provides exclusive access to deeply discounted base fares for $59.99 per year.

Certain routes are excluded, including Atlanta-Boston, Denver-Las Vegas, Orlando-San Juan, and New York JFK-Los Angeles, and blackout dates apply on October 9-10 and 12-13, 2025. The voucher applies to base fares only, excluding taxes, fees, and certain premium fare classes, and a 7-day advance purchase is required.

Hot Tip:

Want to stretch your budget even further? Look for midweek flights, which are often cheaper than weekends, and combine them with a Discount Den membership to unlock the lowest base fares. Remember, the $50 voucher only applies to base fares, so booking strategically can help you maximize your savings on future trips.

Final Thoughts

If you’re looking to save on fall travel and get a head start on 2026 trips, this Frontier BOGO promo is a no-brainer. Just remember to book by September 12, apply the promo code BOGO, and check for route restrictions and blackout dates. With ultra-low fares and a future travel voucher in your pocket, it’s the perfect time to plan ahead.