PHL - STI

$106 Find Cheap Flights from Philadelphia to Santiago de los Caballeros

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Santiago de los Caballeros departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Santiago de los Caballeros

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Santiago de los Caballeros, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Santiago de los Caballeros, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Philadelphia to Santiago de los Caballeros (PHL-STI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Santiago de los Caballeros that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Santiago de los Caballeros

Sun, Dec 7 - Tue, Jan 27
Spirit Airlines Logo
6:53 pm - 2:42 amPHL-STI
6h 49m1 stop
Spirit Airlines Logo
6:18 pm - 12:32 amSTI-PHL
7h 14m1 stop
$293Spirit Airlines
Find Deal
Sun, Dec 7 - Mon, Dec 8
Spirit Airlines Logo
6:58 pm - 2:42 amPHL-STI
6h 44m1 stop
Spirit Airlines Logo
3:43 am - 9:17 amSTI-PHL
6h 34m1 stop
$299Spirit Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
Spirit Airlines Logo
8:51 pm - 12:22 pmPHL-STI
14h 31m1 stop
Spirit Airlines Logo
1:17 pm - 11:26 pmSTI-PHL
11h 09m1 stop
$300Spirit Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Spirit Airlines Logo
6:53 pm - 2:42 amPHL-STI
6h 49m1 stop
Spirit Airlines Logo
3:43 am - 11:17 amSTI-PHL
8h 34m1 stop
$306Spirit Airlines
Find Deal
Sat, Dec 6 - Tue, Dec 9
Multiple Airlines Logo
9:00 am - 2:42 amPHL-STI
16h 42m1 stop
Multiple Airlines Logo
3:43 am - 10:36 pmSTI-PHL
19h 53m1 stop
$311Multiple Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Spirit Airlines Logo
6:53 pm - 2:42 amPHL-STI
6h 49m1 stop
Spirit Airlines Logo
3:43 am - 12:29 pmSTI-PHL
9h 46m2 stops
$312Spirit Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
Spirit Airlines Logo
4:00 pm - 2:42 amPHL-STI
9h 42m1 stop
Spirit Airlines Logo
3:43 am - 9:17 amSTI-PHL
6h 34m1 stop
$314Spirit Airlines
Find Deal
Sat, Dec 6 - Thu, Dec 11
JetBlue Logo
7:00 am - 8:57 amPHL-STI
24h 57m1 stop
JetBlue Logo
10:11 am - 11:13 pmSTI-PHL
14h 02m1 stop
$375JetBlue
Find Deal
Sat, Jan 17 - Mon, Jan 26
JetBlue Logo
11:45 am - 11:02 amPHL-STI
22h 17m1 stop
JetBlue Logo
12:12 pm - 11:34 pmSTI-PHL
12h 22m1 stop
$401JetBlue
Find Deal
Sat, Dec 6 - Thu, Dec 11
JetBlue Logo
4:32 pm - 8:57 amPHL-STI
15h 25m2 stops
JetBlue Logo
10:11 am - 11:13 pmSTI-PHL
14h 02m1 stop
$403JetBlue
Find Deal

Everything you should know

Top airlines
Spirit Airlines
Cheapest • from $293 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 39% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 25% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
2 days a week
There are direct flights from Philadelphia to Santiago de los Caballeros 2 days a week: Thu, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$293
Overall average: $706
Spirit Airlines
Sun 12/7Tue 1/27
PHL - STI • 1 stop
Cheapest non-stop
$611
Frontier
Sun 12/28Thu 1/1
PHL - STI • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Santiago de los Caballeros!
Booking Insights

KAYAK's insights & trends for Philadelphia to Santiago de los Caballeros flights

Get data-powered insights and trends into flights from Philadelphia to Santiago de los Caballeros to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to Santiago de los Caballeros?

The average price of all round-trip flights from Philadelphia to Santiago de los Caballeros clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Santiago de los Caballeros on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Philadelphia to Santiago de los Caballeros. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Santiago de los Caballeros, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Santiago de los Caballeros is February, where tickets cost $353 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $706 and $556 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Santiago de los Caballeros, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Santiago de los Caballeros, you should book around 3 weeks before departure, which saves you about 39% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$106
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 50% increase in price.
Flight from Philadelphia to Santiago de los Caballeros

When to book flights from Philadelphia to Santiago de los Caballeros

Are your dates flexible? Find out the best times to travel from Philadelphia to Santiago de los Caballeros based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Santiago de los Caballeros

  • What is the cheapest flight from Philadelphia to Santiago de los Caballeros?

    In the last 3 days, the lowest price for a flight from Philadelphia to Santiago de los Caballeros was $106 for a one-way ticket and $293 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Santiago de los Caballeros?

    Yes

  • Which airports will I be using when flying from Philadelphia to Santiago de los Caballeros?

    Philadelphia and Santiago de los Caballeros are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Santiago de los Caballeros.

  • Which aircraft models fly most regularly from Philadelphia to Santiago de los Caballeros?

    The Airbus A320neo is the aircraft model that flies most regularly on the Philadelphia to Santiago de los Caballeros flight route.

  • Which airline alliances offer flights from Philadelphia to Santiago de los Caballeros?

    oneworld is the only airline alliance operating flights between Philadelphia and Santiago de los Caballeros.

  • Which is the best airline for flights from Philadelphia to Santiago de los Caballeros, American Airlines or Spirit Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Santiago de los Caballeros are American Airlines and Spirit Airlines. With an average price for the route of $605 and an overall rating of 7.2, American Airlines is the most popular choice. Spirit Airlines is also a great choice for the route, with an average price of $407 and an overall rating of 6.3.

  • How does KAYAK find such low prices on flights from Philadelphia to Santiago de los Caballeros?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Santiago de los Caballeros.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Santiago de los Caballeros?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santiago de los Caballeros from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Santiago de los Caballeros?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santiago de los Caballeros with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and STI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Santiago de los Caballeros?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santiago de los Caballeros from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to Santiago de los Caballeros

  • Looking for a cheap flight? 25% of our users found flights on this route for $209 or less one-way and $706 or less round-trip.

Prefer to fly direct from Philadelphia to Santiago de los Caballeros?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to Santiago de los Caballeros.
Find which airlines fly direct from Philadelphia Airport to Santiago de los Caballeros Airport, which days they fly and book direct flights.

Direct departures

Philadelphia to Santiago de los Caballeros

Thursday

Frontier

Frontier

Sunday

Frontier

Frontier

See more direct flights

Direct returns

Santiago de los Caballeros to Philadelphia

Thursday

Frontier

Frontier

Sunday

Frontier

Frontier

See more direct flights

Reviews of the top 3 airlines serving from Philadelphia to Santiago de los Caballeros

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Santiago de los Caballeros. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Santiago de los Caballeros? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11030 reviews
7.5Boarding
7.2Comfort
8.0Crew
6.4Food
6.9Entertainment
Airline reviews

Delays to take off and to leave the plane after landing added a lot of time to this flight.

6.0 GoodMiguel, Oct 2025PHL - MIA
Read more American Airlines reviews

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Airport in MXP is crazy. Get there at least 2 hours before flight.

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

The flight was canceled 3 hours after original take off time

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

the plane was not full so the flight attendant had me move to an empty row which made for a good flight. The software for logging on and booking and confirming the flight is much too cumbersome.

Always comes in handy when I want a quick weekend getaway.

For the price I could have taken a “name brand” airline. No drink no snack and constant emails trying to get addition money for EVERYTHING other airlines include in the price. It looks cheaper but it’s Judy bait and switch and emails non stop!

The gate agents for spirit at EWR wouldn’t give me my ticket to board when I arrived 50 min from the flight, saying that I wouldn’t make my flight. They tried to reschedule me to arrive at my destination 14 hours after the original flight, which included a 10 hr layover in another city. I rebooked with another airline and it took me a total of 5 min to go through security. Then I see a charge on my card for a $100 change fee that I did not approve. Beware of this horrible place and these horrible people

Excessive fees for flight delays. What a Scam. I was not able to attend the wedding I needed to go.

Waited at the airport for over 4 hours to board this flight. Terrible airline

Was supposed to take off 8:00 last night. Got delayed till 8:00 this morning

It was terrible, we had to board and unboard the flight with a hour delay that caused me to miss an appointment and a surprise for my wife

When the flight ticket is expensive and you have to purchase check in luggage and there is no snacks, no entertainment, tight seats stuffed in the back of the plane not such good experience. I would like some to reach out to me . I paid for check luggage when I bought the ticket they made me pay again on the return flight extra $70. Very frustrating.

Excellent experience when I am looking for a budget airline where the main expectation is getting me from point A to point B with no frills.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

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

Information on your arrival and departure airports

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