Through Sept. 30, British Airways Signature Visa cardholders will receive $20 off the fare price on their next British Airways flight purchase made with their card. What’s more, the $20 discount will be applied to each ticket purchased with the card.

In other words, if you purchase five tickets on the same flight, you’ll save a cool $100.

For more information and to book travel, visit http://www.britishairways.com/get20. If you’re not yet a British Airways Visa cardholder, you can earn 15,000 bonus miles when you apply for, and receive, the Signature Visa card.