Orbitz coupons: $75 off 4+ night vacations, Bally's for $22/night

Orbitz takes $75 off the cost of hotel stays of four or more nights via coupon code "4ODWR75". That's one of the best discounts we've seen from Orbitz.com so far this year. Trips must be booked by June 1 for travel between June 1 and August 15. For example, pick a stay at Bally's Las Vegas and get your fourth night for free. Rates start at $36.75 per night; for 4-night stays, that gets trimmed down to $21.68 per night. Plus, get a $30 resort credit if you book before May 17.

Of note, for hotel stays of three nights, you can instead get $40 off via coupon code "AORB40". Hotels must be booked by June 30 for stay through July 31.