PHL - STI

$124 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 3/23. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$260
Overall average: $359
Spirit Airlines
Tue 2/10Tue 2/17
PHL - STI • 1 stop
Cheapest non-stop
$406
Frontier
Thu 4/9Sun 4/12
PHL - STI • Non-stop
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 29% 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
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!
Flight Deals
Booking Insights
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

Tue, Feb 10 - Tue, Feb 17
Spirit Airlines Logo
6:00 am - 3:33 pm
PHL
-
STI
8h 33m
1 stop
Spirit Airlines Logo
4:40 pm - 8:44 am
STI
-
PHL
17h 04m
1 stop
$260Spirit Airlines
Tue, Feb 24 - Tue, Mar 3
Spirit Airlines Logo
8:06 am - 3:35 pm
PHL
-
STI
6h 29m
1 stop
Spirit Airlines Logo
4:40 pm - 8:44 am
STI
-
PHL
17h 04m
1 stop
$264Spirit Airlines
Sun, Feb 8 - Sat, Feb 14
Spirit Airlines Logo
8:20 am - 3:33 pm
PHL
-
STI
6h 13m
1 stop
Spirit Airlines Logo
4:40 pm - 11:50 pm
STI
-
PHL
8h 10m
1 stop
$267Spirit Airlines
Sun, Feb 8 - Tue, Feb 17
Spirit Airlines Logo
6:00 am - 3:33 pm
PHL
-
STI
8h 33m
1 stop
Spirit Airlines Logo
4:40 pm - 8:44 am
STI
-
PHL
17h 04m
1 stop
$269Spirit Airlines
Sat, Feb 7 - Sat, Feb 14
Spirit Airlines Logo
6:00 am - 3:33 pm
PHL
-
STI
8h 33m
1 stop
Spirit Airlines Logo
4:40 pm - 8:44 am
STI
-
PHL
17h 04m
1 stop
$272Spirit Airlines
Wed, Mar 4 - Wed, Mar 11
Spirit Airlines Logo
8:06 am - 3:35 pm
PHL
-
STI
6h 29m
1 stop
Spirit Airlines Logo
3:41 pm - 11:50 pm
STI
-
PHL
8h 09m
1 stop
$273Spirit Airlines
Thu, Mar 19 - Sun, Mar 22
Spirit Airlines Logo
8:18 am - 2:35 pm
PHL
-
STI
6h 17m
1 stop
Spirit Airlines Logo
3:43 pm - 8:39 am
STI
-
PHL
16h 56m
1 stop
$275Spirit Airlines
Tue, Mar 10 - Tue, Mar 17
Spirit Airlines Logo
8:06 am - 2:33 pm
PHL
-
STI
6h 27m
1 stop
Spirit Airlines Logo
3:43 pm - 8:39 am
STI
-
PHL
16h 56m
1 stop
$276Spirit Airlines
Sun, Mar 1 - Fri, Mar 20
Spirit Airlines Logo
8:06 am - 3:35 pm
PHL
-
STI
6h 29m
1 stop
Spirit Airlines Logo
2:46 am - 7:40 pm
STI
-
PHL
16h 54m
1 stop
$282Spirit Airlines
Wed, Feb 25 - Wed, Mar 11
Spirit Airlines Logo
6:00 am - 3:35 pm
PHL
-
STI
8h 35m
1 stop
Spirit Airlines Logo
3:41 pm - 11:50 pm
STI
-
PHL
8h 09m
1 stop
$284Spirit Airlines
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 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 October, where tickets cost $339 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $738 and $566 respectively.

Can I save money by flying with a layover from Philadelphia to Santiago de los Caballeros?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $490 on average.

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 2 weeks before departure, which saves you about 17% 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$124
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 55% 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 $124 for a one-way ticket and $260 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 airlines offer Wi-Fi service onboard planes from Philadelphia to Santiago de los Caballeros?

    American Airlines, and JetBlue offer inflight Wi-Fi service on the Philadelphia to Santiago de los Caballeros flight route.

  • 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.

  • On which days can I fly direct from Philadelphia to Santiago de los Caballeros?

    You can catch a nonstop flight from Philadelphia to Santiago de los Caballeros on on Thursday, and Sunday.

  • 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 $365 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 $158 or less one-way and $322 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 11201 reviews
7.2Comfort
8.0Crew
7.5Boarding
6.4Food
6.9Entertainment
Airline reviews

My flight to London from Philadelphia was cancelled due to weather.

6.0 GoodRicciyah, Jan 2026
PHL - LHR
Read more American Airlines reviews

My flight to London from Philadelphia was cancelled due to weather.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

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.

The entire experience was so surprisingly pleasant. And the blocked extra seat between us was such an amazing and nice bonus. Great experience all around and I can’t wait to fly with spirit again!

Everything was OK, the deicing took a long time, our connections were almost missed.

All very good except they didn’t load our walker so haven’t gotten it yet

Flight was cancelled. But kayak thought it was still on time.

For the cost you can't e too critical, but the inablitiy to recline the seat and minimal cushioning in the seats made for a less than comfortable flight. Other than that we had an ealry departure and arrival, boarding was smooth.

The flight was delayed by 2 hours and we had no food or water or chargers

Spirit was on time. They maintained updates and information. The crew was friendly and professional. Because this is a budget friendly airline, they have dispensed with a lot of frills and part of that comes with a price, for example, the seats are not quite as comfortable as others. I am ok with a pay for beverage and snack service as I prefer my own anyway so this was not a concern. I thought overall, having a great flight crew and on time service was definitely worth losing some of the frills from other carriers.

Nothing everything cost money a bottle of water is 5 dollars and there wasn't even an outlet to plug 🔌 in my 📱 phone

You can’t beat Spirit’s prices on tickets, especially with the positive experience that comes with it! I appreciated the timeliness of Spirit airlines. The crew in the airport was very kind and wished you a good flight by name. The crew on the flight was attentive and friendly. Overall, I am very pleased with my experience with Spirit.

This was my best experience with spirit. I flew you guys 4 times and I must say this was the BEST

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Information on your arrival and departure airports