$98 Cheap Southwest Airlines flights Dallas (DAL) to Harlingen (HRL)

Use the "Price (lowest to highest)" filter on Expedia to find cheap Southwest Airlines round-trip flights from $217 from DAL to HRL. Affordable one-way tickets from $98 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Start searching one to three months ahead of your departure date to score cheap fares on Southwest Airlines flights from Love Field Airport (DAL) to Valley Intl. Airport (HRL). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Departing DAL at 1:45PM UTC-6, the earliest Southwest Airlines flight to HRL lands at 3:15PM UTC-6. Flying early means you'll be less likely to encounter delays or cancellations.* Prefer to travel later? The last Southwest Airlines flight from DAL to HRL departs at 3:20PM UTC-6 and touches down at 4:50PM UTC-6.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.