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$151+ Cheap flights from Santiago de los Caballeros (STI) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
STI — PHL
Jul 14 — Jul 211
Mon 7/14
Mon 7/21
1 adult, Economy
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Cheapflights Tip: The best prices from Santiago de los Caballeros to Philadelphia are usually found in February or November, booked 35 days in advance, depart on a Monday or Friday and return on a Tuesday

Cheap flight deals from Santiago de los Caballeros to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Santiago de los Caballeros (STI) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 9, 2025.

Round-trip from

$361
(Cheapflightsfares)

One-way from

$151
(Priceline)

Popular in

December

Cheapest in

February

Average price

$589
From Santiago de los Caballeros to Philadelphia
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One-way flight from Santiago de los Caballeros to Philadelphia
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Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Santiago de los Caballeros to Philadelphia

Cheapest flights from Santiago de los Caballeros to Philadelphia
Explore the most affordable flight options available from Santiago de los Caballeros to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1810:55 amSTI - PHL
1 stop12h 35mSpirit Airlines
Mon 7/215:21 pmPHL - STI
1 stop16h 29mSpirit Airlines
Deal found 7/8$361
This Priceline deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/162:10 pmSTI - PHL
1 stop24h 50mFrontier
Sun 7/278:05 pmPHL - STI
1 stop16h 46mFrontier
Deal found 7/6$380
This Kiwi.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/712:10 pmSTI - PHL
1 stop24h 01mMultiple Airlines
Fri 9/125:20 amPHL - STI
1 stop29h 44mMultiple Airlines
Deal found 7/7$392
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:29 pmSTI - PHL
2 stops18h 12mAmerican Airlines
Fri 10/36:50 pmPHL - STI
2 stops17h 37mAmerican Airlines
Deal found 7/9$468

Cheapflights Fare Finder

Customize your flight search to find flights from Santiago de los Caballeros to Philadelphia 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, Cheapflights users made 2,558,603 searches. Data last updated July 9, 2025.
Use the filters below to find and compare flights from Santiago de los Caballeros to Philadelphia that are best for you.

Fly from

Santiago de los Caballeros

Fly to

Philadelphia

Route

Depart

Return

Price

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Fri 7/18

10:55 am-11:30 pm

1 stop12h 35m

Philadelphia

Mon 7/21

5:21 pm-9:50 am

1 stop16h 29m

$361

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Wed 7/16

2:10 pm-3:00 pm

1 stop24h 50m

Philadelphia

Sun 7/27

8:05 pm-12:51 pm

1 stop16h 46m

$380

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Sun 9/7

12:10 pm-12:11 pm

1 stop24h 01m

Philadelphia

Thu 9/11

5:20 am-11:04 am

1 stop29h 44m

$392

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Mon 9/15

1:29 pm-12:18 am

1 stop10h 49m

Philadelphia

Fri 10/3

6:50 pm-12:27 pm

2 stops17h 37m

$468

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Fri 7/18

10:55 am-11:30 pm

1 stop12h 35m

$169

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Wed 8/20

10:20 am-12:09 pm

1 stop25h 49m

$206

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Fri 7/18

2:06 pm-1:45 am

1 stop11h 39m

$210

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Thu 7/31

3:08 am-4:55 pm

1 stop13h 47m

$319

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Sun 7/20

2:07 pm-2:08 pm

2 stops24h 01m

$396

Santiago de los CaballerosPhiladelphia

STI - PHL

STIPHL

Santiago de los Caballeros

Sun 7/13

1:30 pm-12:19 am

1 stop10h 49m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

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

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Santiago de los Caballeros 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.

Cheapflights Insights

Everything you need to know about your flight from Santiago de los Caballeros to Philadelphia

How far ahead should I book a flight from Santiago de los Caballeros to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Santiago de los Caballeros to Philadelphia. Price data was last updated on June 27, 2025.

The best time to book flights from Santiago de los Caballeros to Philadelphia is 35 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Santiago de los Caballeros to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Santiago de los Caballeros to Philadelphia (average of $236). Flying from Santiago de los Caballeros to Philadelphia in March is currently the most expensive (average of $295). 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.

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

Find hourly flight availability from Santiago de los Caballeros to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 9, 2025.

When flying from Santiago de los Caballeros to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 41% versus a flight in the morning.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated July 9, 2025.
See what other customers who have flown with United Airlines, JetBlue, and American Airlines from Santiago de los Caballeros to Philadelphia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,843 reviews
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
JetBlue
7.3
Good
2,909 reviews
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Spirit Airlines
6.3
Okay
8,060 reviews
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Frontier
5.9
Fair
3,268 reviews
United Airlines
7.4
Good
8,843 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

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

  • What are the cheapest airlines flying from Santiago de los Caballeros to Philadelphia round-trip?

    Cheapflights users have booked flights from Santiago de los Caballeros to Philadelphia round-trip from $361. Other airlines that can offer you cheap pricing are Frontier, from $380, and American Airlines, from $468. These flights start at 23% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Santiago de los Caballeros to Philadelphia one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $151. Users have also found prices from $169 and $319 on Spirit Airlines and JetBlue, respectively.

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

    Yes. In addition to deals on Santiago de los Caballeros to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from Santiago de los Caballeros to Philadelphia 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 Santiago de los Caballeros to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Santiago de los Caballeros to Philadelphia (average of $236). Flying from Santiago de los Caballeros to Philadelphia in March is currently the most expensive (average of $295). 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.

See more FAQs

Traveling to a place near Santiago de los Caballeros?

Book flights to Santiago de los Caballeros if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Cherry Hill
Ocean City
Pottstown
Chester
Essington
Reading
Millville
Ephrata
Camden
Exton
Dover
Elkton
Willow Grove
Newark
Glen Mills
Springfield
Plymouth Meeting

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Santiago de los Caballeros to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Santo Domingo to Dulles Intl flights
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Santo Domingo to Reagan-National flights
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Punta Cana to Philadelphia flights
Santiago de los Caballeros to Dulles Intl flights
Santo Domingo to Pittsburgh flights
Punta Cana to Reagan-National flights
Puerto Plata to LaGuardia flights
Santiago de los Caballeros to Reagan-National flights
Santo Domingo to Allentown flights
Punta Cana to Pittsburgh flights
Santiago de los Caballeros to Pittsburgh flights
La Romana to John F Kennedy Intl flights
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Nagua to LaGuardia flights

Top airline flying from Santiago de los Caballeros to Philadelphia

Discover the top airline that operate flights from Santiago de los Caballeros to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$480Average$541FlexibilityNo cancel feeOn-time71%

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