PHL - STI

$98 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 4/12. 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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Everything you should know

Cheapest round-trip
$316
Overall average: $556
Frontier
Sun 4/5Thu 4/9
PHL - STI • Non-stop
Cheapest one-way
$98
Typical prices: $193-$283
Frontier
Sun 4/12
PHL - STI • Non-stop
Nonstop flights
4 days a week
Tue, Thu, Sat, Sun
You can fly direct with American Airlines and Frontier. Average duration is 3h 55m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $316 (round-trip)
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $378 (round-trip)
Shortest trip • 7h 24m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 33% 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 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% 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

Sun, Apr 5 - Thu, Apr 9
Frontier Logo
6:30 am - 10:25 am
PHL
-
STI
3h 55mnonstop
Frontier Logo
11:30 am - 3:30 pm
STI
-
PHL
4h 00mnonstop
$316Frontier
Sun, Apr 5 - Thu, Apr 9
Frontier Logo
6:30 am - 10:25 am
PHL
-
STI
3h 55mnonstop
Frontier Logo
11:30 am - 3:30 pm
STI
-
PHL
4h 00mnonstop
$340Frontier
Mon, Apr 13 - Sat, Apr 25
Spirit Airlines Logo
6:48 am - 2:23 pm
PHL
-
STI
7h 35m
1 stop
Spirit Airlines Logo
3:07 pm - 11:37 pm
STI
-
PHL
8h 30m
1 stop
$346Spirit Airlines
Tue, Apr 7 - Tue, Apr 14
Multiple Airlines Logo
5:32 pm - 1:49 am
PHL
-
STI
8h 17m
1 stop
Multiple Airlines Logo
3:28 pm - 11:10 am
STI
-
PHL
19h 42m
1 stop
$348Multiple Airlines
Sun, Apr 5 - Sat, May 2
Multiple Airlines Logo
6:30 am - 10:25 am
PHL
-
STI
3h 55mnonstop
Multiple Airlines Logo
3:07 pm - 11:59 pm
STI
-
PHL
8h 52m
1 stop
$352Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Spirit Airlines Logo
6:08 pm - 1:49 am
PHL
-
STI
7h 41m
1 stop
Spirit Airlines Logo
3:28 pm - 11:10 am
STI
-
PHL
19h 42m
1 stop
$353Spirit Airlines
Wed, Apr 22 - Thu, Apr 30
Spirit Airlines Logo
6:12 pm - 2:02 pm
PHL
-
STI
19h 50m
1 stop
Spirit Airlines Logo
3:07 pm - 11:37 pm
STI
-
PHL
8h 30m
1 stop
$354Spirit Airlines
Tue, Apr 7 - Wed, Apr 8
Multiple Airlines Logo
6:08 pm - 1:49 am
PHL
-
STI
7h 41m
1 stop
Multiple Airlines Logo
3:28 pm - 11:25 pm
STI
-
PHL
7h 57m
1 stop
$355Multiple Airlines
Mon, Apr 27 - Mon, May 4
Spirit Airlines Logo
5:45 am - 2:02 pm
PHL
-
STI
8h 17m
1 stop
Spirit Airlines Logo
3:07 pm - 5:06 pm
STI
-
PHL
25h 59m
1 stop
$357Spirit Airlines
Thu, Apr 9 - Tue, Apr 14
Multiple Airlines Logo
5:32 pm - 1:49 am
PHL
-
STI
8h 17m
1 stop
Multiple Airlines Logo
3:28 pm - 11:10 am
STI
-
PHL
19h 42m
1 stop
$360Multiple 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 February, where the average cost of round-trip tickets is $739 and $617 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.

No, with an average price for the route of $397, prices are generally cheapest when you fly direct.

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 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$98
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 44% 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

  • How many flights are there between Philadelphia and Santiago de los Caballeros per day?

    There is a maximum of 1 nonstop flight a day that takes off from Philadelphia and lands in Santiago de los Caballeros, with an average flight time of 3h 55m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 2 flights.

  • 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 $98 for a one-way ticket and $316 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, JetBlue or American Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Santiago de los Caballeros are JetBlue and American Airlines. With an average price for the route of $538 and an overall rating of 7.2, JetBlue is the most popular choice. American Airlines is also a great choice for the route, with an average price of $614 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 $191 or less one-way and $435 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

American Airlines

Thursday

Frontier,American Airlines

Frontier,American Airlines

Saturday

American Airlines

American Airlines

Sunday

Frontier,American Airlines

Frontier,American Airlines

See more direct flights

Direct returns

Santiago de los Caballeros to Philadelphia

Tuesday

American Airlines

American Airlines

Thursday

Frontier,American Airlines

Frontier,American Airlines

Saturday

American Airlines

American Airlines

Sunday

Frontier,American Airlines

Frontier,American Airlines

See more direct flights

Reviews of the top 4 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
JetBlueOverall score based on 2909 reviews
8.0Crew
7.5Comfort
7.4Boarding
7.2Entertainment
6.6Food
Airline reviews

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

2.0 MediocreCharles, Mar 2026
FLL - ATL
Read more JetBlue reviews

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Delayed by 1.5 hours. Terrible apologies, half hearted at best. It will be a LONG time until i book w Jet Blue again. Very disappointed.

My check in was stressful. I somehow lost my seat from my original booking, the plane showed no availability/no seat when it was time to check-in. I called and was instructed to try to get a seat at the airport. I asked if it was a full flight and the travel agent said the site showed some seating but was not able to secure one for me. Why not? On my way to the airport the app finally revealed one available seat towards the back of the aircraft that I was able to book. It ended up being an overbooked flight, so glad I wasn't stuck.

Flights with JetBlue from San Diego to Boston are a miserable experience. The flight was delayed about 1.5 hours due to “weather” supposedly but the flights for other airlines left on time so it just have been some kind of weather that only affects JetBlue. I had a small carry on - purse. The crew stored it in a bin 2 rows down from me because they were using the bin next to my seat for other people’s stuff. The TV screen in the emergency row seats does not work. It just was awful from start to finish. When we landed, we had to sit inside the plane for a very long time because the plane had to be moved to a different gate.

They made me check my bag and I didn't need to as there was overhead space available. I paid for a seat towards the front of the plane and it didn't recline. I requested a refund and they declined to give me one.

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

Both flights were significantly delayed. The flight experience itself was great.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

Broke my luggage and I can't get a resolution yet.

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

Delayed 11 hours with two being on our destinations tarmac, no compensation or refund and was told I would actually get charged a $200 cancellation fee if I decided to switch airlines for my return flight. For their inconvenience they gave a $10 meal voucher to split between two people in a airport.

Absolutely terrible, flight was cancelled and we missed our cruise. Will never fly Spirit again.

Horrendous and unprofessional staff and will never fly spirit again

Like Spirit but bad that you have to pay for water 🙃

My flight was ultimately cancelled but the lack of updates and professionalism from the crew leading up to the cancellation announcement was frustrating for all passengers.

Delay due to personnel issues on Spirit’s end. Original departure time 9:30pm. Took off at 2:15am. Lost an entire night’s sleep bc Spirit couldn’t get a crew together. Very poor.

Sadly the flight was delayed by 4 hours due to the weather snd sir traffic control staffing. Otherwise the crew was amazing and the flight was perfect.

If there are delays, it takes less than a minute for a Spirit employee to make an announcement. It’s very simple.

I’m still waiting to get on the flight. No one knows what’s happening. The passengers have gotten no updates. We have been up all night and waiting at the airport. This is no way to operate and we should be refunded for this lack of respect for their passengers.

Not enough crew members so we had to wait for more to arrive and they could never give us updates timing. Not even water for free on board. Bare bones airplane- there wasn’t even a seat back pocket to put things into. Spirit is cheap for a reason but this was dismal

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

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

Information on your arrival and departure airports