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Cheap flights from Philadelphia to Santiago de los Caballeros from $142

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Santiago de los Caballeros departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Philadelphia to Santiago de los Caballeros (PHL-STI)

Cheap round-trip flights

Spirit Airlines Logo
5:00 am - 11:03 amPHL-STI
6h 03m1 stop
Spirit Airlines Logo
12:10 pm - 12:46 amSTI-PHL
12h 36m1 stop
$294Spirit Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
Spirit Airlines Logo
9:50 pm - 11:03 amPHL-STI
13h 13m1 stop
Spirit Airlines Logo
12:10 pm - 12:17 amSTI-PHL
12h 07m1 stop
$314Spirit Airlines
Find Deal
Sat, Sep 20 - Thu, Oct 2
Spirit Airlines Logo
5:00 am - 11:03 amPHL-STI
6h 03m1 stop
Spirit Airlines Logo
12:10 pm - 12:46 amSTI-PHL
12h 36m1 stop
$319Spirit Airlines
Find Deal
Wed, Sep 17 - Mon, Sep 22
Spirit Airlines Logo
4:58 pm - 9:15 amPHL-STI
16h 17m1 stop
Spirit Airlines Logo
12:10 pm - 11:47 pmSTI-PHL
11h 37m1 stop
$320Spirit Airlines
Find Deal
Fri, Aug 29 - Sat, Sep 6
Spirit Airlines Logo
5:00 am - 11:03 amPHL-STI
6h 03m1 stop
Spirit Airlines Logo
12:10 pm - 12:46 amSTI-PHL
12h 36m1 stop
$322Spirit Airlines
Find Deal
Sat, Sep 13 - Mon, Sep 22
Spirit Airlines Logo
5:00 am - 11:03 amPHL-STI
6h 03m1 stop
Spirit Airlines Logo
12:10 pm - 11:47 pmSTI-PHL
11h 37m1 stop
$324Spirit Airlines
Find Deal
Mon, Sep 29 - Sat, Oct 4
Spirit Airlines Logo
9:50 pm - 11:03 amPHL-STI
13h 13m1 stop
Spirit Airlines Logo
12:10 pm - 12:46 amSTI-PHL
12h 36m1 stop
$325Spirit Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
Spirit Airlines Logo
8:41 pm - 9:15 amPHL-STI
12h 34m1 stop
Spirit Airlines Logo
12:10 pm - 11:47 pmSTI-PHL
11h 37m1 stop
$327Spirit Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
Logo
5:20 am - 11:03 amPHL-STI
29h 43m1 stop
Logo
12:10 pm - 12:11 pmSTI-PHL
24h 01m1 stop
$339
Find Deal
Thu, Sep 11 - Wed, Sep 17
Logo
2:07 pm - 11:03 amPHL-STI
20h 56m1 stop
Logo
12:10 pm - 12:11 pmSTI-PHL
24h 01m1 stop
$344
Find Deal
Sun, Sep 14 - Wed, Sep 24

Spirit Airlines flights from Philadelphia to Santiago de los Caballeros

Our best Spirit Airlines deals on Philadelphia to Santiago de los Caballeros flight tickets
Spirit Airlines
Sep 15
PHL5:00 amPhiladelphia
6h 03m
1 stop
STI11:03 amSantiago de los Caballeros
Sep 22
STI12:10 pmSantiago de los Caballeros
12h 36m
1 stop
PHL12:46 amPhiladelphia
$294
Find similar
Spirit Airlines
Sep 20
PHL9:50 pmPhiladelphia
13h 13m
1 stop
STI11:03 amSantiago de los Caballeros
Oct 2
STI12:10 pmSantiago de los Caballeros
12h 07m
1 stop
PHL12:17 amPhiladelphia
$314
Find similar
Spirit Airlines
Sep 17
PHL5:00 amPhiladelphia
6h 03m
1 stop
STI11:03 amSantiago de los Caballeros
Sep 22
STI12:10 pmSantiago de los Caballeros
12h 36m
1 stop
PHL12:46 amPhiladelphia
$319
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 August 18, 2025.
Use the filters below to find and compare flights from Philadelphia to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Mon 9/15

5:00 am-11:03 am

1 stop6h 03m

Santiago de los Caballeros

Mon 9/22

12:10 pm-12:46 am

1 stop12h 36m

$294

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Sat 9/20

9:50 pm-11:03 am

1 stop13h 13m

Santiago de los Caballeros

Thu 10/2

12:10 pm-12:17 am

1 stop12h 07m

$314

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Wed 9/17

5:00 am-11:03 am

1 stop6h 03m

Santiago de los Caballeros

Mon 9/22

12:10 pm-12:46 am

1 stop12h 36m

$319

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Fri 8/29

4:58 pm-9:15 am

1 stop16h 17m

Santiago de los Caballeros

Sat 9/6

12:10 pm-11:47 pm

1 stop11h 37m

$320

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Sat 9/13

5:00 am-11:03 am

1 stop6h 03m

Santiago de los Caballeros

Mon 9/22

12:10 pm-12:46 am

1 stop12h 36m

$322

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Mon 9/29

5:00 am-11:03 am

1 stop6h 03m

Santiago de los Caballeros

Sat 10/4

12:10 pm-11:47 pm

1 stop11h 37m

$324

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Mon 9/15

9:50 pm-11:03 am

1 stop13h 13m

Santiago de los Caballeros

Mon 9/22

12:10 pm-12:46 am

1 stop12h 36m

$325

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Sat 8/30

8:41 pm-9:15 am

1 stop12h 34m

Santiago de los Caballeros

Sat 9/6

12:10 pm-11:47 pm

1 stop11h 37m

$327

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Thu 9/11

5:20 am-11:03 am

1 stop29h 43m

Santiago de los Caballeros

Wed 9/17

12:10 pm-12:11 pm

1 stop24h 01m

$339

PhiladelphiaSantiago de los Caballeros

PHL - STI

PHLSTI

Philadelphia

Sun 9/14

2:07 pm-11:03 am

1 stop20h 56m

Santiago de los Caballeros

Wed 9/24

12:10 pm-12:11 pm

1 stop24h 01m

$344

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Santiago de los Caballeros from

How to get the cheapest flight ticket from Philadelphia to Santiago de los Caballeros

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Philadelphia and Santiago de los Caballeros?

What is the cheapest month to fly to Santiago de los Caballeros?

The cheapest month to fly to Santiago de los Caballeros from Philadelphia is in September. Flight prices, which tend to average around $341, are often lower during this time because this is during the off-season. If you aren’t able to travel to Santiago de los Caballeros during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $357.

What is the cheapest day to depart on your flight to Santiago de los Caballeros?

The cheapest day to depart from Philadelphia to Santiago de los Caballeros is on a Tuesday when prices can be found for as low as $427. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Santiago de los Caballeros for around $645.

What is the cheapest time of day to depart on your flight to Santiago de los Caballeros?

Our data shows that the cheapest Philadelphia to Santiago de los Caballeros flights are usually those with departure times in the evening. Our users have found flights to Santiago de los Caballeros in the evening for as low as $437. At noon is when there is more demand to fly to Santiago de los Caballeros, so prices are often more expensive at around $617 per ticket.

How far in advance should I book a flight to Santiago de los Caballeros?

You are more likely to see cheaper flights to Santiago de los Caballeros from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago de los Caballeros for around $458 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santiago de los Caballeros from Philadelphia for as low as $380 on momondo.

How have Philadelphia to Santiago de los Caballeros flight prices changed over time?

As of August 2025, prices for Philadelphia to Santiago de los Caballeros flights are approximately 58% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia 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 Philadelphia to Santiago de los Caballeros (PHL to STI) flight deals and tips

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

Best Price Found

$142

Fastest flight time

5h 43m

Direct flights

None

Airports in Santiago de los Caballeros

1 airport
The best one-way flight to Santiago de los Caballeros from Philadelphia in the past 72 hours is $142. The best round-trip flight deal from Philadelphia to Santiago de los Caballeros found on momondo in the last 72 hours is $294.
The fastest flight from Philadelphia to Santiago de los Caballeros takes 5h 43m
There are no direct flights from Philadelphia to Santiago de los Caballeros. Popular non-direct route for this connection is Philadelphia Airport - Santiago de los Caballeros Airport.
There is 1 airport near Santiago de los Caballeros: Santiago de los Caballeros (STI)
Search flight deals

  • How far is Philadelphia to Santiago de los Caballeros by plane?

    The distance between Philadelphia and Santiago de los Caballeros is about 1440.1 mi. By plane, this route typically takes 5h 43m.

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

    Prices for flights from Philadelphia Airport to Santiago de los Caballeros Airport were last updated today.

  • How many operators does momondo search for flights from Philadelphia Airport to Santiago de los Caballeros Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia 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.

  • What is the most popular airline from Philadelphia to Santiago de los Caballeros?

Best airlines flying from Philadelphia to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Philadelphia to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $178Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
FrontierPriceFrom $244Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
American AirlinesPriceFrom $459Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Santiago de los Caballeros from Philadelphia.

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

All flight searches from Philadelphia to Santiago de los Caballeros on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Philadelphia to Santiago de los Caballeros flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Philadelphia to Santiago de los Caballeros now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santiago de los Caballeros and let you know when they change.

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