Sizzlin' Deal

Team Clark is adamant that we will never write content influenced by or paid for by an advertiser. To support our work, we do make money from some links to companies and deals on our site. Learn more about our guarantee here.
Expired Deal
Southwest Airlines flight deals
Expired Deal

Expires today! Southwest fares from $40 one-way

Laura Sayers January 25, 2018
Get This Deal Read More
Image Credit: Dreamstime

Sorry, this deal is no longer available, but sign up below to get alerts on more deals like this.

Problem with a deal? Let us know.

Fly on the cheap with this Southwest deal!

2018 is here and Southwest wants to “SALE-ebrate” by offering one-way fares starting as low as $40! This fare sale is valid for domestic travel January 23 through May 23, 2018. Travel to and from San Juan, Puerto Rico is valid January 23 through March 1 and April 3 through May 17, 2018. International travel is valid January 23 through March 1 and April 3 through May 18, 2018.

Example one-way fares:

  • Los Angeles (LAX) to Las Vegas (LAS) from $40
  • Chicago (MDW) to Cincinnati (CVG) from $49
  • Cincinnati (CVG) to Baltimore/Washington (BWI) from $49
  • Milwaukee (MKE) to Cleveland (CLE) from $49
  • Nashville (BNA) to Milwaukee (MKE) from $49
  • San Diego (SAN) to Las Vegas (LAS) from $49
  • Baltimore/Washington (BWI) to Providence (PVD) from $51
  • Providence (PVD) to Washington DC (DCA) from $51
  • Boise (BOI) to Spokane (GEG) from $54
  • Long Beach (LGB) to Sacramento (SMF) from $54
  • Oakland (OAK) to Portland (PDX) from $54
  • Portland (PDX) to San Francisco (SFO) from $54
  • Ft. Lauderdale (FLL) to Jacksonville (JAX) from $55
  • Las Vegas (LAS) to Oakland (OAK) from $56
  • Orlando (MCO) to Ft. Lauderdale (FLL) from $56
  • San Jose (SJC) to Las Vegas (LAS) from $56
  • Los Angeles (LAX) to Salt Lake City (SLC) from $58
  • Salt Lake City (SLC) to Burbank (BUR) from $58
  • Albuquerque (ABQ) to Phoenix (PHX) from $59
  • Atlanta (ATL) to Jacksonville (JAX) from $59
  • Burbank (BUR) to San Francisco (SFO) from $59
  • Columbus (CMH) to Atlanta (ATL) from $59
  • Dallas (DAL) to Oklahoma City (OKC) from $59
  • Ft. Lauderdale (FLL) to Grand Cayman (GCM) or Providenciales (PLS) from $59
  • Indianapolis (IND) to Newark (EWR) from $59
  • Long Beach (LGB) to Oakland (OAK) from $59
  • Los Angeles (LAX) to San Francisco (SFO) from $59
  • Oakland (OAK) to Seattle (SEA) from $59
  • Tampa (TPA) to Ft. Lauderdale (FLL) from $59

Not all seats, travel days, and markets are included. Points bookings do not include government fees from $5.60 per one-way flight. A 21-day advance purchase is required Check the full list of destinations! Book by January 25.

Always be sure to fare compare at and Google Flights to make sure you’re getting the cheapest flight. See Clark’s travel planning and booking guide here.

  • Show Comments Hide Comments
About this Deal Digger About this Deal Digger
Laura Sayers is a writer and deal digger for She has a passion for travel, enjoys tracking down great destination sales and can pack for a 2-week trip in just one carry-on suitcase!
View More Articles