Southwest Airlines via DealBase discounts select nationwide 1-way fares, with prices starting from $48.98. That's the best price we could find for select routes on comparable carriers by $20. Book this travel deal by June 20 for travel from September 3 through December 18. Buy Now Tips On the DealBase landing page, click on "Southwest Airlines" in the top line to see this sale. We found this price on flights departing on September 7 from Long Beach, CA (LGB) to San Jose, CA (SJC). All prices, dates, and booking details were valid at the time of publication.