Day 4: National Parks Promo Code Sale from Alaska Airlines

Save on summer travel to America's National Parks with Alaska Airlines' new promo code offer. Look for new destinations to be featured throughout the week. Today's deals? 15% Off flights to/from Yellowstone (via Bozeman) and Grand Teton (via Idaho Falls).

Just enter promo code EC6489 at time of purchase. This offer expires tonight, at 11:59pm.