Route guide · 234 miles
Cheap Flights from San Antonio to Harlingen
SAT → HRL · Nonstop 0h 59m · Live round-trip fares
Plenty of travelers price out San Antonio to Harlingen every day — here's how to beat the average fare. Nonstops run about 0h 59m, and the calendar matters more than the airline. Aim to book 2–4 weeks ahead, stay flexible on the day of the week, and set a free alert so a price drop never slips past you.
Live fares for SAT → HRL are updating. Use the search below for real-time prices.
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See live fares
Updated daily
Flight time
0h 59m
Nonstop, typical
Distance
234 mi
SAT → HRL
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
Southwest Airlines
Nonstop flights from San Antonio to Harlingen
Nonstop flights from San Antonio to Harlingen are flown by Southwest Airlines. The 234-mile trip takes about 0h 59m gate to gate, and nonstops are usually cheapest when booked 2–4 weeks ahead.
Booking insights: San Antonio → Harlingen
- Distance: 234 miles · nonstop flight time: 0h 59m.
- Cheapest upcoming week in the live data starts around Oct 22, with fares from $179.
- Fares tend to bottom out when you book about 2–4 weeks ahead — earlier than that rarely helps, later usually hurts.
- If your dates flex by a day or two, shifting to a midweek departure is the easiest saving there is.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Cheapest month · San Antonio → Harlingen
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$179
Cheapest: Fri, Oct 23 — $179
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from San Antonio to Harlingen: what you need to know
The flight
At 234 miles, SAT to HRL is one of those quick up-and-down flights: roughly 0h 59m nonstop. There's no meal service to plan around — the decisions that matter here are departure time and which airport entrance traffic is kinder to you.
Airlines on this route
Southwest Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from San Antonio (SAT)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our San Antonio airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Harlingen (HRL)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Harlingen airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Harlingen to San Antonio fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 234 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 0h 59m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
San Antonio to Harlingen flight FAQs
How long is the flight from SAT to HRL?
A nonstop from SAT to HRL clocks in at around 0h 59m for the 234-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from San Antonio to Harlingen?
Southwest Airlines typically operate nonstop flights from SAT to HRL. Nonstops are usually cheapest when booked 2–4 weeks ahead of departure.
What is the cheapest month to fly from San Antonio to Harlingen?
Fares from San Antonio to Harlingen tend to ease outside the peak summer and holiday rush — the late-summer and early-fall shoulder weeks are usually kinder on the wallet. Set a free Airfare Deal alert and we'll flag the dips for your dates.
How much are last minute flights from SAT to HRL?
Walking up to this route at the last minute is the expensive way to do it — prices inside 7 days of departure climb fast. The 2–4 weeks booking window is where the value sits.
What is a good round-trip deal from San Antonio to Harlingen?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from San Antonio to Harlingen?
You'll mainly see Southwest Airlines on San Antonio to Harlingen. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to San Antonio airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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