United has an advertised sale basically matching the latest Southwest sale for travel through October. AmericanDelta, and Alaska are matching along many routes as well. Fares start at $97 round-trip.

For most routes, travel is valid on Tuesdays, Wednesdays, and Saturdays, with a 14-day advance purchase required. I've also found Sunday, May 27, available on most routes. The United sale is advertised for travel through June 13, but like the Southwest sale, most of these fares are also available from August 21 through October 31.

Travel to Nevada and Florida is valid Sundays through Wednesdays; Travel from Nevada and Florida is valid Tuesdays through Fridays. You may find travel on May 24, 25, 28; August 31, and September 3, to be blacked out. A Saturday night stay may be required depending on the route. There also may be a 30-day max stay. Click on the fare details for more info.

Tickets must be booked by May 3, 2018.

A sample of fares include:

Columbus to Washington D.C. $97 round-trip, nonstop

San Jose to Las Vegas $97 round-trip, nonstop

San Francisco to San Diego $97 round-trip, nonstop

Chicago to Cincinnati $97 round-trip, nonstop

Oakland to Los Angeles $97 round-trip, nonstop

Dallas to Oklahoma City $97 round-trip, nonstop

Chicago to Lexington $137 round-trip, nonstop

Los Angeles to Tucson $163 round-trip, nonstop

Atlanta to New York $181 round-trip, nonstop

Burbank to Salt Lake City $155 round-trip, nonstop

Kansas City to Dallas $171 round-trip, nonstop

Washington DC to Portland, ME $187 round-trip, nonstop

Chicago to Charleston $197 round-trip, nonstop

Minneapolis to Nashville $201 round-trip, nonstop

Houston to Charlotte $217 round-trip, nonstop

San Francisco to Spokane $225 round-trip, nonstop

St. Louis to Dallas $227 round-trip, nonstop

Detroit to Phoenix $263 round-trip, nonstop

Indianapolis to San Diego $296 round-trip

Phoenix to Orlando $297 round-trip, nonstop

New York to Phoenix $299 round-trip, nonstop

Hartford to Houston $301 round-trip, nonstop

Columbus to San Francisco $310 round-trip

Philadelphia to Albuquerque $342 round-trip

Cleveland to Santa Ana $358 round-trip

Grand Rapids to Los Angeles $368 round-trip

There are many more routes and these fares all work in reverse as well. Most prices are for basic economy, which means United and American will only include one small personal item (small backpack, large purse, etc.) that will fit underneath the seat in front of you. Larger carry-on bags are not allowed. Checked bag fees start at $25 each way. If you would like to bring a larger carry-on bag, consider the higher regular economy price.

Delta still includes a normal carry-on allowance plus one personal item in their basic economy fares. Alaska does not sell basic economy yet, but they plan to do so this fall.

Above image by Vitalii Matokha via Shutterstock.

All products and services mentioned on Airfarewatchdog are independently selected by our team of expert travelers. If you buy something through our links, we may earn an affiliate commission.

More Stories You'll Love

Airfarewatchdog.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com