PHL - STI

$210 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 8/11. 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

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

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

Everything you should know

Cheapest round-trip
$437
Typical prices: $668-$525
Frontier, JetBlue
Tue 8/11Wed 8/26
PHL - STI • Non-stop
Cheapest non-stop
$489
Typical prices: $776-$540
Frontier
Sun 7/5Thu 7/16
PHL - STI • Non-stop
Nonstop flights
Tue, Thu, Sat, Sun
You can fly direct with American Airlines and Frontier. Average duration is 3h 41m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $449 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $378 (round-trip)
Shortest trip • 6h 53m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 42% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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, Aug 11 - Wed, Aug 26
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
8:13 am - 4:04 pm
STI
-
PHL
7h 51m
1 stop
$437Multiple Airlines
Sun, Aug 2 - Thu, Aug 6
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
8:13 am - 4:04 pm
STI
-
PHL
7h 51m
1 stop
$445Multiple Airlines
Thu, Aug 13 - Thu, Aug 27
JetBlue Logo
4:59 pm - 2:36 pm
PHL
-
STI
21h 37m
1 stop
JetBlue Logo
3:51 pm - 11:51 pm
STI
-
PHL
8h 00m
1 stop
$449JetBlue
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
8:13 am - 4:04 pm
STI
-
PHL
7h 51m
1 stop
$457Multiple Airlines
Fri, Aug 28 - Fri, Sep 18
JetBlue Logo
6:00 am - 2:36 pm
PHL
-
STI
8h 36m
1 stop
JetBlue Logo
6:30 am - 9:50 am
STI
-
PHL
27h 20m
1 stop
$462JetBlue
Thu, Jul 30 - Sat, Aug 8
JetBlue Logo
5:02 pm - 11:51 pm
PHL
-
STI
6h 49m
1 stop
JetBlue Logo
8:13 am - 11:51 pm
STI
-
PHL
15h 38m
1 stop
$468JetBlue
Tue, Aug 11 - Tue, Aug 25
JetBlue Logo
8:15 am - 2:36 pm
PHL
-
STI
6h 21m
1 stop
JetBlue Logo
8:13 am - 9:50 pm
STI
-
PHL
13h 37m
1 stop
$469JetBlue
Thu, Aug 13 - Wed, Aug 26
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
8:13 am - 4:04 pm
STI
-
PHL
7h 51m
1 stop
$472Multiple Airlines
Thu, Aug 13 - Tue, Aug 25
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
3:51 pm - 11:51 pm
STI
-
PHL
8h 00m
1 stop
$477Multiple Airlines
Thu, Jul 9 - Mon, Jul 13
Multiple Airlines Logo
6:20 am - 9:59 am
PHL
-
STI
3h 39mnonstop
Multiple Airlines Logo
4:54 pm - 11:53 pm
STI
-
PHL
6h 59m
1 stop
$481Multiple 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.

How much is a round-trip flight from Philadelphia to Santiago de los Caballeros?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Santiago de los Caballeros departing in August.

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 Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Philadelphia to Santiago de los Caballeros. For your return ticket, we recommend flying on a Saturday 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 September, where tickets cost $391 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $754 and $635 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 $597 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 23% 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$210
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 13% 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 5 days, the lowest price for a flight from Philadelphia to Santiago de los Caballeros was $208 for a one-way ticket and $437 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 A321neo 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 Tuesday, Thursday, Saturday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from Philadelphia to Santiago de los Caballeros are American Airlines and JetBlue. With an average price for the route of $704 and an overall rating of 7.1, American Airlines is the most popular choice. JetBlue is also a great choice for the route, with an average price of $539 and an overall rating of 7.1.

  • 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 $235 or less one-way and $562 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

Tuesday

American Airlines,Frontier

American Airlines,Frontier

Thursday

American Airlines,Frontier

American Airlines,Frontier

Saturday

American Airlines

American Airlines

Sunday

American Airlines,Frontier

American Airlines,Frontier

See more direct flights

Direct returns

Santiago de los Caballeros to Philadelphia

Tuesday

American Airlines,Frontier

American Airlines,Frontier

Thursday

American Airlines,Frontier

American Airlines,Frontier

Saturday

American Airlines

American Airlines

Sunday

American Airlines,Frontier

American Airlines,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.
7.1
American AirlinesOverall score based on 11662 reviews
7.2Comfort
7.5Boarding
6.8Entertainment
6.4Food
7.9Crew
Airline reviews

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

6.0 GoodLisa, Jun 2026
PHL - LHR
Read more American Airlines reviews

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

I like everything. Blythe at DCA is the absolute best!

JetBlue worker, Blythe, was so amazing at the DCA counter. If it wasn’t for her, I’m not sure we would’ve made it through. Please thank her!

They lost my luggage and refuse to help. Terrible airline. I've never experienced worse customer service in my life. Pretty much just told me too bad that I lost all my luggage, not caring that I am stuck in Europe for 2 weeks with absolutely nothing.

You should have had Wifi to make it much enjoyable.

The flight out was delayed from 3:40pm to 5pm and again to 8pm. We boarded after 5pm, had to disembark because they could not get the Engine started, then we switched gates and got a new plane and did not board until after 8pm.

The flight was delayed after already taxiing from the gate due to a malfunction. After 3 hours we were told the flight was canceled. The next flight available was Sunday. My daughter and I stayed overnight in the airport due to this issue. I was given a $12 meal voucher. Unacceptable

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

Nice plane, clean, wifi available and movies. All the flight attendants were courteous.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

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

Information on your arrival and departure airports