Get 2 one-way tickets for $11 with the latest Frontier sale — but there’s a catch

Update: Some offers mentioned below are no longer available. View the current offers here.

Editor’s note: As the travel industry restarts following COVID-19 shutdowns, TPG suggests that you talk to your doctor, follow health officials’ guidance and research local travel restrictions before booking that next trip. We'll be here to help you prepare, whether you're traveling next month or next year.

With almost 1 million daily flyers taking to the sky over the Labor Day weekend, many airlines are doubling down on sales and promotions to try and keep that momentum going as we head into the typically slower fall season.

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Frontier Airlines is back at it with $11 one-way nationwide flights across a variety of routes -- but the deal is actually better than that. Believe it or not, that $11 price gets you not one, but two one-way tickets on select dates. The catch? You need to purchase a round-trip journey and have Frontier's Discount Den membership.

If you qualify, this might be as cheap as paid air travel will ever get. (Just remember, you, your friend and all kids 2 and up will need to pack masks to board a Frontier flight.)

This sale for $11 flights each way is valid for bookings made by Sept. 10, and valid for travel on select dates until Feb. 10.

Related: Everything you need to. know before flying Frontier Airlines

Should I book travel now?

There's certainly a level of risk if you're booking travel now, even if your flights are scheduled several months out, since there's no way to guarantee when it will be 100% safe to travel again. After all, the CDC states that, "staying home is the best way to protect yourself and others from getting sick."

While all states have at least partially reopened, several have a mandatory 14-day quarantine order in effect. If you're booking this deal, know that many states, such as New York and New Jersey, have mandatory quarantines for travelers entering from high-risk states, currently including California or Florida. Massachusetts and Maine are asking travelers to quarantine as well.

Related: Many travelers entering New York, New Jersey and Connecticut must enter mandatory quarantine

It's also important to understand the cancellation and rebooking policies for any airfare you book. Frontier Airlines is currently permitting a one-time change to travel plans without a fee, provided the change is made seven days or more before departure.

Related: Airline coronavirus change and cancellation policies

Frontier flight deals currently available

Airlines: Frontier Airlines

Routes: Many across the U.S.

Cost: $11 each way with round-trip purchase. A second traveler can fly for free using code FLYFREE.

Travel Dates: Select dates until Feb. 10 for $11 fares. Travel by Nov. 19 to get the second traveler for free, valid on select dates

Pay With: The Platinum Card® from American Express (5x on airfare booked directly with the airline; starting Jan. 1, 2021 earn 5x points on up to $500,000 on these purchases per calendar year), Citi Prestige® Card (5x on airfare), Citi Premier® Card (3x on airfare), Chase Sapphire Reserve (3x on travel), American Express® Gold Card (3x on airfare booked directly with the airline or amextravel.com) or Chase Sapphire Preferred Card (2x on travel)

The information for the Citi Prestige card has been collected independently by The Points Guy. The card details on this page have not been reviewed or provided by the card issuer.

Sample itineraries

Here’s a look at some of the best deals you could book. This isn’t an exhaustive list, so you'll be able to find deals between other cities as well.

Houston (IAH) to Denver (DEN) for $22 round-trip nonstop on Frontier

Chicago (ORD) to Pensacola (PNS) for $22 round-trip nonstop on Frontier

Atlanta (ATL) to Orlando (MCO) for $22 round-trip nonstop on Frontier

Newark (EWR) to Myrtle Beach (MYR) for $22 round-trip nonstop on Frontier

How to book

If you don't have or want Frontier's Discount Den membership, you can head to Google Flights and plug in your desired departure and destination cities to see the lowest fares. Filter your search to only show Frontier flights, though these flights will cost at least a few dollars more than $11. Then, use the calendar function to find dates and prices that work for you and then click through to book with the airline directly or an OTA such as Expedia or Priceline.

But, if you want the cheapest $11 fares or you want to have a second traveler fly for free, you'll need to do that directly on Frontier's website and use the discount code FLYFREE. To actually purchase the deal at that rate or with the free companion, you'll need to purchase the $59 per year Discount Den membership.

Maximize your purchase

Don’t forget to use a credit card that earns bonus points or provides trip protections on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Citi Prestige® Card (5x on airfare), Chase Sapphire Reserve (3x on travel), American Express® Gold Card, Citi Premier® Card (3x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more tips on maximizing airfare purchases.

All screenshots from Frontier.com