Here's a pair of outstanding airfare deals ideal for summer getaways. But act fast to buy tickets at these rates. These offers have no ticket-by date -- meaning they could vanish within hours.

- One-way rates on American Airlines (connecting service through Chicago-O'Hare or New York-LaGuardia) to Montreal, Quebec are $146.84 inclusive. This price is an exceptional value considering Air Canada charges $316.68 on the same route.

- The second bargain comes from Delta Air Lines to Reno-Lake Tahoe, Nevada -- a stunning year-round playground. Round-trip rates from Atlanta are $291.20 inclusive. Delta serves Reno with one flight connection in Salt Lake City.

Both of these offers require a 10-day or more advance notice of travel. Trips are permitted seven days a week, based on sale seat availability. There are no blackout dates to avoid -- and travel is permitted at these rates through March 23, 2013.

Sale airfares are always subject to change. Every seat on every flight is not offered at the lowest rate.

Since only a limited supply of seats is available, act quickly to make your purchase. I recommend starting the search for available seats at Kayak.com vs. calling an airline directly. You can also search for the sale at travel websites such as Expedia or Travelocity, etc.

Clara Bosonetto is a retired travel consultant.