As they do every week, United is matching the previously mentioned domestic sale from Southwest. Frankly, not the most wowing sale from either, but could be of interest to those antsy travelers eager to lock in plans for late summer/fall. Just take into account bag fees. Two free checked bags on Southwest vs. $25 for the first checked bag on United, and $35 for the second bag.

Fares are valid for travel on Mondays through Thursdays, as well as Saturdays, from August 23 through November 2.

Tickets must be booked by May 19.

Fares include:

Chicago to Birmingham $251 round-trip, nonstop

Chicago to Buffalo $189 round-trip, nonstop

Chicago to Columbus $185 round-trip, nonstop

Chicago to Des Moines $229 round-trip, nonstop

Chicago to St Louis $213 round-trip nonstop

Chicago to Kansas City $195 round-trip, nonstop

Chicago to Oklahoma City $237 round-trip, nonstop

Denver to Oklahoma City $193 round-trip, nonstop

Denver to Portland $187 round-trip, nonstop

Denver to Sacramento $247 round-trip, nonstop