Competing airlines have slashed fares for travel nationwide over Labor Day weekend. Prices have dropped to as low as $47 each way. These routes save travelers as much as $200 compared with regular fares.

Be flexible with your dates to find the lowest fares -- try a Sept. 4 or 5 departure and a Sept. 7 or 8 return.

Book quickly -- this sale ends Sept. 3. Sample fares include (each way):  

West Coast

• $47 ... San Francisco from Los Angeles ($114 roundtrip incl. tax)
• $50 ... Salt Lake City from Denver ($121 roundtrip incl. tax)
• $68 ... Denver from Los Angeles ($147 roundtrip incl. tax)
• $69 ... San Diego from Denver ($159 roundtrip incl. tax)
• $129 ... San Antonio from Portland ($293 roundtrip incl. tax)

Midwest

• $49 ... Kansas City from Columbus ($137 roundtrip incl. tax)
• $67 ... St. Louis from Chicago ($155 roundtrip incl. tax)
• $69 ... New Orleans from Milwaukee ($170 roundtrip incl. tax)
• $69 ... Colorado Springs from St. Louis ($184 roundtrip incl. tax)
• $79 ... Tampa from Kansas City ($189 roundtrip incl. tax)
• $99 ... Denver from Chicago ($219 roundtrip incl. tax)

East Coast

• $64 ... Milwaukee from Atlanta ($147 roundtrip incl. tax roundtrip incl. tax)
• $78 ... Indianapolis from Pittsburgh ($198 roundtrip incl. tax)
• $104 ... Chicago from Baltimore ($235 roundtrip incl. tax)
• $109 ... Colorado Springs from Philadelphia ($259 roundtrip incl. tax)
• $109 ... Albuquerque from New York City ($245 roundtrip incl. tax)
• $119 ... Santa Ana, Calif. from Washington, D.C. ($266 roundtrip incl. tax)