A hot today-only (10/14) sale to Portland, Ore. is valid on trips taken any day of the week through Sept. 9, 2012.

The offer comes from Continental/United with one flight connection service via Chicago, Denver, Houston or Phoenix (stopovers not permitted).

Rules are simple: Give a one-week or more advance notice of travel.

There are no blackout dates.

Total one-way ticket rates, inclusive of taxes and fees is $170.40.

Keep in mind that this deal has no ticket-by date which indicates the offer could vanish at any moment. Since only a limited supply of sale seats are available, act quickly to make your purchase.

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

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 Web sites such as Expedia or Travelocity, etc. Airlines can discontinue or pull a sale price without notice when the offer does not have a "ticket-by" date or when the offer is deemed "sold out."

Visit www.travelportland.com , the official tourism site for lodging specials, city events, tips on using public transportation and what to do in, around and out of town.

Clara Bosonetto is a retired travel consultant.