PHL - STI

$120 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 1/11. 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

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

Sat, Oct 25 - Sat, Nov 1
Spirit Airlines Logo
7:54 pm - 10:38 amPHL-STI
14h 44m1 stop
Spirit Airlines Logo
11:43 am - 11:36 pmSTI-PHL
11h 53m1 stop
$335Spirit Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
Multiple Airlines Logo
9:30 am - 10:38 amPHL-STI
25h 08m1 stop
Multiple Airlines Logo
11:43 am - 11:52 amSTI-PHL
24h 09m1 stop
$337Multiple Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
Spirit Airlines Logo
7:54 pm - 10:38 amPHL-STI
14h 44m1 stop
Spirit Airlines Logo
11:43 am - 11:59 pmSTI-PHL
12h 16m1 stop
$339Spirit Airlines
Find Deal
Sun, Oct 19 - Sun, Oct 26
Multiple Airlines Logo
5:05 am - 10:38 amPHL-STI
29h 33m1 stop
Multiple Airlines Logo
11:43 am - 11:52 amSTI-PHL
24h 09m1 stop
$340Multiple Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Multiple Airlines Logo
5:05 am - 10:38 amPHL-STI
29h 33m1 stop
Multiple Airlines Logo
11:43 am - 11:52 amSTI-PHL
24h 09m1 stop
$342Multiple Airlines
Find Deal
Sun, Oct 19 - Thu, Oct 23
Multiple Airlines Logo
5:05 am - 10:38 amPHL-STI
29h 33m1 stop
Multiple Airlines Logo
11:43 am - 11:52 amSTI-PHL
24h 09m1 stop
$345Multiple Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 26
Spirit Airlines Logo
5:33 am - 10:38 amPHL-STI
29h 05m1 stop
Spirit Airlines Logo
11:43 am - 9:32 amSTI-PHL
21h 49m1 stop
$348Spirit Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
Spirit Airlines Logo
9:55 pm - 10:38 amPHL-STI
12h 43m1 stop
Spirit Airlines Logo
11:43 am - 11:59 pmSTI-PHL
12h 16m1 stop
$351Spirit Airlines
Find Deal
Sat, Oct 18 - Mon, Oct 20
Spirit Airlines Logo
7:54 pm - 10:38 amPHL-STI
14h 44m1 stop
Spirit Airlines Logo
11:43 am - 6:49 pmSTI-PHL
7h 06m1 stop
$362Spirit Airlines
Find Deal
Sun, Dec 7 - Tue, Dec 16
JetBlue Logo
7:00 am - 8:57 amPHL-STI
24h 57m1 stop
JetBlue Logo
10:11 am - 11:13 pmSTI-PHL
14h 02m1 stop
$385JetBlue
Find Deal

Everything you should know

Top airlines
Spirit Airlines
Cheapest • from $335 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 27% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$335
Overall average: $339
Spirit Airlines
Sat 10/25Sat 11/1
PHL - STI • 1 stop
Cheapest non-stop
$627
Frontier
Thu 12/18Sun 1/11
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, Saturday 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 October, where tickets cost $339 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $616 and $578 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 2 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$120
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 33% 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 $120 for a one-way ticket and $335 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 $603 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 $297 or less one-way.

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 10000 reviews
7.5Boarding
7.2Comfort
8.0Crew
6.4Food
6.9Entertainment
Airline reviews

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

4.0 OkayDavid, Aug 2025PHL - MCO
Read more American Airlines reviews

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.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Everything was fine. I'm average height and I pack light. I'm ready for my Spirit flight.

Changing the flight time to 6:15 am on the return flight is extremely inconvenient. The flight was okay. It was on time. The crew was friendly. The seats were uncomfortable. All the upsells are annoying, and I would prefer paying a single higher fee and not have to purchase so much extra.

Spirit Airlines was ok but TRAVELHELPDESK, the 3rd party travel agent IS A JOKE! VERY RUDE CUSTOMER AGENTS ont he phone. NO HELP AT ALL. But the airlines was ok.

No Tumberlence smooth flight. Try to change the menu on Snacks.

Cancelled my flight last minute and did not help me rebook. It was a horrible experience.

No frills - because you get what you pay for. The crew was amazing!! I had plenty of room to spread out because the flight was half full. Which made it easy to sleep.

The terminal crew is so rude cabin crew is extremely rude flight is very good

Spirit is low fare air line. Food also cost you. No free food.

The flight was delayed twice with minimal explanation. The terminal and airplane were filthy. The food voucher didn’t even cover a tiny pizza from a kiosk in the terminal. All in all, a pretty miserable experience for a flight to attend a funeral

I will use spirit more New clean aircraft Excellent crew ! Quick boarding process !

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

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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