What is the cheapest month to book a flight from Harlingen, Texas to Santiago de los Caballeros?

Currently, May is the cheapest month in which you can book a flight from Harlingen, Texas to Santiago de los Caballeros (average of $347). Flying from Harlingen, Texas to Santiago de los Caballeros in July is currently the most expensive (average of $603). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Santiago de los Caballeros ranges from 3.0 - 11.6 inches per month. December is typically the wettest month, when rainfall can reach 11.6 in. July is typically the driest time to visit Santiago de los Caballeros when rainfall is around 3.0 in.

If weather is an important factor for your trip to Santiago de los Caballeros, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

What is the cheapest time of day to fly from HRL to STI?

When flying from Harlingen, Texas to Santiago de los Caballeros, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How can I find direct flights from Harlingen to Santiago de los Caballeros?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Santiago de los Caballeros.

Can I find deals for business class flights from Harlingen to Santiago de los Caballeros?

Yes. Cheapflights offers flight deals from Harlingen to Santiago de los Caballeros by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$667+ Flights from Harlingen, TX to Santiago de los Caballeros

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Cheap flight deals from Harlingen to Santiago de los Caballeros

Round-trip from	$667 (United Airlines)

From Harlingen Valley Intl to Santiago de los Caballeros

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Cheapest flights from Harlingen to Santiago de los Caballeros
Explore the most affordable flight options available from Harlingen to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Sat 9/67:00 amHRL - STI

2 stops17h 46mUnited Airlines

Sat 9/136:00 amSTI - HRL

2 stops16h 52mUnited Airlines

Deal found 7/29

$667

Best flights from Harlingen to Santiago de los Caballeros
Discover carefully curated flight deals from Harlingen to Santiago de los Caballeros that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Sat 9/67:00 amHRL - STI

2 stops17h 46mUnited Airlines

Sat 9/136:00 amSTI - HRL

2 stops16h 52mUnited Airlines

Deal found 7/29

$667

Cheapflights Fare Finder

Use the filters below to find and compare flights from Harlingen to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Sat 9/6

7:00 am-1:46 am

2 stops17h 46m

Santiago de los Caballeros

Sat 9/13

6:00 am-9:52 pm

2 stops16h 52m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Harlingen to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Harlingen with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Santiago de los Caballeros

Get a feel of what it's like to fly with United Airlines from Harlingen to Santiago de los Caballeros by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,896 reviews

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Can I find deals for flights from Harlingen to Santiago de los Caballeros that include hotel bookings?
Yes. In addition to deals on Harlingen to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Harlingen to Santiago de los Caballeros?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Santiago de los Caballeros.
Can I find deals for business class flights from Harlingen to Santiago de los Caballeros?
Yes. Cheapflights offers flight deals from Harlingen to Santiago de los Caballeros by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Harlingen, Texas to Santiago de los Caballeros?
Currently, May is the cheapest month in which you can book a flight from Harlingen, Texas to Santiago de los Caballeros (average of $347). Flying from Harlingen, Texas to Santiago de los Caballeros in July is currently the most expensive (average of $603). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$667+ Cheap flights from Harlingen, TX (HRL) to Santiago de los Caballeros (STI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Harlingen to Santiago de los Caballeros with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Harlingen to Santiago de los Caballeros

Round-trip from

Find flight deals from Harlingen to Santiago de los Caballeros

Cheapest flights from Harlingen to Santiago de los CaballerosExplore the most affordable flight options available from Harlingen to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from Harlingen to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Harlingen to Santiago de los Caballeros that are best for you.

Best time to book a flight from Harlingen to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Harlingen with our price prediction graph.

Reviews of airlines servicing Santiago de los Caballeros

Get a feel of what it's like to fly with United Airlines from Harlingen to Santiago de los Caballeros by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Santiago de los Caballeros. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Harlingen to Santiago de los Caballeros that include hotel bookings?

How can I find direct flights from Harlingen to Santiago de los Caballeros?

Can I find deals for business class flights from Harlingen to Santiago de los Caballeros?

What is the cheapest month to book a flight from Harlingen, Texas to Santiago de los Caballeros?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Harlingen to Santiago de los Caballeros

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Cheapest flights from Harlingen to Santiago de los Caballeros
Explore the most affordable flight options available from Harlingen to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.