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Cheap flights from Harlingen to Santiago de los Caballeros from $749

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Santiago de los Caballeros departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from Harlingen to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:10 pm - 1:53 pm
HRL
-
STI
24h 43m
2 stops
United Airlines Logo
5:00 am - 10:59 am
STI
-
HRL
30h 59m
2 stops
$749United Airlines
Tue, Oct 27 - Fri, Oct 30
American Airlines Logo
8:04 pm - 9:13 pm
HRL
-
STI
24h 09m
2 stops
American Airlines Logo
7:04 am - 4:25 pm
STI
-
HRL
10h 21m
2 stops
$765American Airlines
Fri, May 29 - Fri, Jun 5
American Airlines Logo
8:04 pm - 9:13 pm
HRL
-
STI
24h 09m
2 stops
American Airlines Logo
7:04 am - 12:14 am
STI
-
HRL
18h 10m
2 stops
$769American Airlines
Thu, May 28 - Thu, Jun 4
United Airlines Logo
5:20 pm - 10:52 pm
HRL
-
STI
28h 32m
2 stops
United Airlines Logo
2:07 pm - 1:30 pm
STI
-
HRL
24h 23m
2 stops
$1,049United Airlines
Sun, Jun 14 - Sun, Jun 21
American Airlines Logo
6:00 am - 9:13 pm
HRL
-
STI
14h 13m
3 stops
American Airlines Logo
7:04 am - 12:14 am
STI
-
HRL
18h 10m
2 stops
$1,786American Airlines
Fri, May 29 - Fri, Jun 5
American Airlines Logo
6:00 am - 9:13 pm
HRL
-
STI
14h 13m
3 stops
American Airlines Logo
7:04 am - 12:14 am
STI
-
HRL
18h 10m
2 stops
$1,816American Airlines
Thu, May 28 - Thu, Jun 4
United Airlines Logo
7:20 am - 10:52 pm
HRL
-
STI
14h 32m
3 stops
United Airlines Logo
6:00 am - 7:49 pm
STI
-
HRL
14h 49m
3 stops
$4,684United Airlines
Fri, May 29 - Fri, Jun 5
United Airlines Logo
7:20 am - 10:52 pm
HRL
-
STI
14h 32m
3 stops
United Airlines Logo
6:00 am - 7:49 pm
STI
-
HRL
14h 49m
3 stops
$4,775United Airlines
Thu, May 28 - Thu, Jun 4

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United Airlines flights from Harlingen to Santiago de los Caballeros

Our best United Airlines deals on Harlingen to Santiago de los Caballeros flight tickets
United Airlines
Oct 27
HRL12:10 pmHarlingen Valley Intl
24h 43m
2 stops
STI1:53 pmSantiago de los Caballeros
Oct 30
STI5:00 amSantiago de los Caballeros
30h 59m
2 stops
HRL10:59 amHarlingen Valley Intl
$749
United Airlines
Jun 14
HRL5:20 pmHarlingen Valley Intl
28h 32m
2 stops
STI10:52 pmSantiago de los Caballeros
Jun 21
STI2:07 pmSantiago de los Caballeros
24h 23m
2 stops
HRL1:30 pmHarlingen Valley Intl
$1,049
United Airlines
May 29
HRL7:20 amHarlingen Valley Intl
14h 32m
3 stops
STI10:52 pmSantiago de los Caballeros
Jun 5
STI6:00 amSantiago de los Caballeros
14h 49m
3 stops
HRL7:49 pmHarlingen Valley Intl
$4,684

American Airlines flights from Harlingen to Santiago de los Caballeros

Our best American Airlines deals on Harlingen to Santiago de los Caballeros flight tickets
American Airlines
May 29
HRL8:04 pmHarlingen Valley Intl
24h 09m
2 stops
STI9:13 pmSantiago de los Caballeros
Jun 5
STI7:04 amSantiago de los Caballeros
10h 21m
2 stops
HRL4:25 pmHarlingen Valley Intl
$765
American Airlines
May 28
HRL8:04 pmHarlingen Valley Intl
24h 09m
2 stops
STI9:13 pmSantiago de los Caballeros
Jun 4
STI7:04 amSantiago de los Caballeros
18h 10m
2 stops
HRL12:14 amHarlingen Valley Intl
$769
American Airlines
May 29
HRL6:00 amHarlingen Valley Intl
14h 13m
3 stops
STI9:13 pmSantiago de los Caballeros
Jun 5
STI7:04 amSantiago de los Caballeros
18h 10m
2 stops
HRL12:14 amHarlingen Valley Intl
$1,786

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen to Santiago de los Caballeros that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 4, 2026.
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

Cheapest round-trip

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Tue 10/27

12:10 pm-1:53 pm

2 stops24h 43m

Santiago de los Caballeros

Fri 10/30

5:00 am-10:59 am

2 stops30h 59m

$749

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Fri 5/29

8:04 pm-9:13 pm

2 stops24h 09m

Santiago de los Caballeros

Fri 6/5

7:04 am-4:25 pm

2 stops10h 21m

$765

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Thu 5/28

8:04 pm-9:13 pm

2 stops24h 09m

Santiago de los Caballeros

Thu 6/4

7:04 am-12:14 am

2 stops18h 10m

$769

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Sun 6/14

5:20 pm-10:52 pm

2 stops28h 32m

Santiago de los Caballeros

Sun 6/21

2:07 pm-1:30 pm

2 stops24h 23m

$1,049

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Fri 5/29

6:00 am-9:13 pm

3 stops14h 13m

Santiago de los Caballeros

Fri 6/5

7:04 am-12:14 am

2 stops18h 10m

$1,786

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Thu 5/28

6:00 am-9:13 pm

3 stops14h 13m

Santiago de los Caballeros

Thu 6/4

7:04 am-12:14 am

2 stops18h 10m

$1,816
Quickest round-trip

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Fri 5/29

7:20 am-10:52 pm

3 stops14h 32m

Santiago de los Caballeros

Fri 6/5

6:00 am-7:49 pm

3 stops14h 49m

$4,684

HarlingenSantiago de los Caballeros

HRL - STI

HRLSTI

Harlingen Valley Intl

Thu 5/28

7:20 am-10:52 pm

3 stops14h 32m

Santiago de los Caballeros

Thu 6/4

6:00 am-7:49 pm

3 stops14h 49m

$4,775

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Harlingen to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen to Santiago de los Caballeros according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harlingen to Santiago de los Caballeros (HRL to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen to Santiago de los Caballeros

Fastest flight time

28h 32m

Direct flights

None
The fastest flight from Harlingen to Santiago de los Caballeros takes 28h 32m
There are no direct flights from Harlingen to Santiago de los Caballeros. There are no popular flight routes from Harlingen to Santiago de los Caballeros.
Search flight deals

Frequently asked questions about flying from Harlingen to Santiago de los Caballeros

  • How far is Harlingen Valley Intl to Santiago de los Caballeros by plane?

    There are 1776.3 mi between Harlingen Valley Intl and Santiago de los Caballeros. By plane, this route typically takes 28h 32m.

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to Santiago de los Caballeros Airport?

    Prices for flights from Harlingen Valley Intl Airport to Santiago de los Caballeros Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Harlingen Valley Intl Airport to Santiago de los Caballeros Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to Santiago de los Caballeros Airport.

  • What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

    The travel and health documents required for your trip to Santiago de los Caballeros Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santiago de los Caballeros Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Harlingen to Santiago de los Caballeros

  • How do I get Price Alerts for flights from Harlingen to Santiago de los Caballeros?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Harlingen from Santiago de los Caballeros. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Harlingen to Santiago de los Caballeros with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Santiago de los Caballeros?

It is quick and easy to find Harlingen to Santiago de los Caballeros flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Santiago de los Caballeros that suits you.

Can I find flights from Harlingen to Santiago de los Caballeros with flexible booking policies on momondo?

Yes. All flights to Santiago de los Caballeros from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Harlingen to Santiago de los Caballeros?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Harlingen to Santiago de los Caballeros.

I’m not ready to book a flight from Harlingen to Santiago de los Caballeros right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Santiago de los Caballeros from Harlingen. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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