San Antonio to Harlingen flights

Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for San Antonio to Harlingen is €166 with United Airlines (checked on 16 Oct 2026).

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Lowest observed

€166

Average observed

€202

Cheapest month

November 2026

Last checked

24 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €166

Lowest observed

6 Nov 2026

United Airlines · 1 stop · One way

Cheapest observed day · Last checked: 16 Oct 2026

Departure

09:35

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

One-way fare

One-way fare · No data: click and we will search

Lowest observed: €166, departing 6 Nov 2026 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
Airlines seen: Frontier Airlines, United Airlines
Typical journey time: 3h 37m
Non-stop: Yes

Short answer

Routavio has seen Frontier Airlines fares from San Antonio to Harlingen. The lowest fare Routavio's own searches returned is €166, seen on 16 Oct 2026. The average across the fares we caught is €202. November 2026 is the cheapest month in our observations, at €166. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare.

About this route

Explore the fares we observed from San Antonio to Harlingen. Prices move often, so pick your dates to see the latest options.

Route distance: 368 km
Typical journey time: 3h 37m

Route-level information; individual journeys vary.
Published schedules report non-stop service with Southwest Airlines. Check current timetables.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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How our prices work

Airport to city: straight-line distance

San Antonio International Airport (SAT) → San Antonio, city gazetteer reference point (29.4241, -98.4936): ≈ 12 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much is a flight from San Antonio to Harlingen?

The lowest fare Routavio has observed is €166, found on 16 Oct 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from San Antonio to Harlingen?

In our observations November 2026 is the cheapest month so far, at €166.

Are there direct flights from San Antonio to Harlingen?

Yes. Published schedules report non-stop flights on this route with Southwest Airlines.

Which airlines fly from San Antonio to Harlingen?

Routavio has seen these carriers on the route: Frontier Airlines, United Airlines.

How long does the flight from San Antonio to Harlingen take?

Across the 113 fares Routavio observed, the average journey time is 3h 56m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide