The offers for the cards listed in this post have expired, so their links have been removed.

Frontier Airlines announced today that will begin charging $20+ to bring a carry on bag onto its flights. Personal items that fit under the seat in front of you will remain free.

Frontier, predictably, is spinning this new fee as a good thing the way that airlines always justify new fees: "only pay for what you use and get a lower base fare."

This change is bad for folks flying on award tickets.

Frontier has announced a 10% discount on domestic flights bought by Thursday April 24, 2014 and flown by September 21, 2014 with promo code SPLASH. Blackout dates of May 22-23, May 26, June 29, July 3, July 5-6, August 28-29, and September 1, 2014 apply.

This is Frontier's first fare sale for summer travel dates!

This 10% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

Frontier has announced a 15% discount on domestic flights bought by Thursday April 17, 2014 and flown by June 12, 2014 with promo code REFUND. Sale fares apply every day except Fridays and Sundays.

This 15% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

The Frontier Airlines World MasterCard® currently offers one of the best sign up bonuses for a tiny minimum spending requirement: you earn 40,000 bonus miles after spending $500 in the first 90 days.

Now the card is offering 0% Intro APR on purchases and balance transfers for the first 12 months.

Frontier has announced a 14% discount on domestic flights bought by Thursday April 3, 2014 and flown by June 12, 2014 with promo code NOFOOLIN. Sale fares apply every day except Fridays and Sundays.

This 14% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

Frontier has announced a 17% discount on domestic flights bought by tomorrow March 18, 2014 and flown by May 21, 2014 with promo code POTOGOLD. (Blackout dates of March 21-23, 2014; March 28-30, 2014; April 4-6, 2014; and April 11-13, 2014 apply.)

This 17% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

Frontier Airlines is a Denver-based airline with flights throughout the continental US, Alaska, Mexico, Costa Rica, Jamaica, and the Dominican Republic.

Right now The Frontier Airlines World MasterCard® is offering 40,000 bonus miles after spending only $500 in the first 90 days.

That's a huge sign up bonus for such a tiny minimum spending requirement. Making it even better is the fact that Frontier charges only 10k miles each way for a Standard award within the United States including Alaska.

Frontier has announced a 10% discount on domestic flights purchased by February 26, 2014 and flown by June 12, 2014 with promo code PLAYBALL.

This 10% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

Frontier has announced a 14% discount on domestic flights bought by February 6, 2014 and flown by March 12, 2014 with promo code SUPER. (Blackouts: February 13, 14, and 17)

This 14% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.