Early Bird Sale from Frontier

Frontier's (tel. 800/432-1359; Early Bird Sale is valid for travel from Dec. 1 through Feb. 15.

Travel to/from Florida is valid Jan. 6 through Feb. 15. Tickets require a 14-day advance purchase. Travel to/from Little Rock and Palm Springs is valid Dec. 1-15, and Jan. 6-Feb. 15.

Some markets do not offer daily connections. Due to schedule changes, markets may not connect throughout the valid travel period.

Tickets must be booked by Aug. 22.

Round-trip fares include:

Mexico Sale from Alaska Airlines

Save on flights to Mexico with the current sale from Alaska Airlines (tel. 800/426-0333; Fly to/from La Paz, Loreto, Mazatlan, Puerto Vallarta, and Los Cabos, Monday through Friday, from Aug. 22 through Oct. 7. Rules and restrictions vary by route. Fares to/from Guadalajara, Mexico City, Ixtapa, and Manzanillo are good for travel from Aug. 29 through Nov. 16.

Seats are limited and may not be available on all flights or all days.

No advance purchase required. All tickets must be booked by Aug. 15.

Round-trip fares include:

Fall webSavers from Air Canada

Air Canada (tel. 888/247-2262; featured domestic webSavers are good for travel from Aug. 17 through Dec. 15. Valid travel days will vary by route. Check fare details for rules and restrictions.

All tickets must be booked by 11:59pm ET, Aug. 18.

Round-trip fares are priced in Canadian dollars, and include:

WestJet's Oh Canada Sale

From WestJet (tel. 800/538-5696;, save on travel within Canada. Their Oh Canada sale is valid for travel on Tuesdays, Wednesdays and Thursdays from Aug. 17 to Dec. 15. Tickets must be booked by 11:59pm MST August 18.

Seats at these fares are limited and may not be available on all flights.

Round-trip fares include:

From the Mailbag: "Dude, Where's My Fare?"

Q: How do the airlines set their prices? After seeing airfare for a particular schedule jump 100% from the time I started my search to when I actually tried to book it three minutes later, I was given the old "supply and demand … someone somewhere must have booked a seat in that span, and that caused the jump." How is that legal or possible?

A: Find out.

Additional Reporting by Tracy W. Stewart

George Hobica is a syndicated travel journalist and blogger whose website,, tracks unadvertised airfare wars and fare sales, including the most helpful and always updated Top 50 Airfares.

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