Frontier's UpFront Plus seats guarantee an empty middle seat, enhancing comfort on medium-haul flights.
Frontier's Economy Bundle includes a carry-on bag, seat selection, and no cancellation fees, saving costs.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $145 (Cheapflightsfares) |
One-way from | $84 (Frontier) |
Popular in | June |
Cheapest in | February |
Average price | $208 |
Good round-trip deal | $233 or less |
Good one-way deal | $142 or less |
Fly from
Fly to
Route
Depart
Return
Price
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
jue. 1/15
7:45 am-4:36 pm
1 stop9h 51m
Philadelphia
mar. 1/20
1:10 pm-12:36 am
2 stops10h 26m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
vie. 1/23
12:10 pm-9:55 pm
1 stop10h 45m
Philadelphia
mar. 1/27
2:10 pm-12:35 am
2 stops9h 25m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
mié. 1/14
2:05 am-2:31 pm
2 stops13h 26m
Philadelphia
dom. 1/18
8:05 am-9:26 pm
1 stop12h 21m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
vie. 12/12
6:40 am-12:25 pm
1 stop6h 45m
Philadelphia
lun. 12/15
2:45 pm-12:35 am
2 stops8h 50m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
lun. 1/12
2:05 am-2:31 pm
2 stops13h 26m
Philadelphia
mar. 1/20
10:10 am-12:36 am
2 stops13h 26m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
vie. 1/23
2:05 am-2:31 pm
2 stops13h 26m
Philadelphia
dom. 1/25
5:50 pm-6:11 am
1 stop11h 21m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
jue. 1/22
2:05 am-4:36 pm
2 stops15h 31m
Philadelphia
mar. 1/27
10:10 am-12:36 am
2 stops13h 26m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
lun. 12/15
5:45 am-3:05 pm
2 stops10h 20m
Philadelphia
mié. 12/31
1:50 pm-12:35 am
2 stops9h 45m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
mié. 12/3
2:05 am-2:07 pm
2 stops13h 02m
Philadelphia
lun. 12/8
6:30 am-10:22 pm
2 stops14h 52m
San JuanPhiladelphia
SJU - PHL
SJUPHL
San Juan Luis Munoz Marin Intl
jue. 11/13
2:05 am-2:07 pm
2 stops13h 02m
Philadelphia
lun. 11/17
10:34 am-12:36 am
2 stops13h 02m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to Philadelphia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Philadelphia (average of $76). Flying from San Juan Luis Munoz Marin Intl Airport to Philadelphia in August is currently the most expensive (average of $100). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from San Juan Luis Munoz Marin Intl Airport to Philadelphia in the evening. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Philadelphia flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 16% of weekly flights between San Juan and Philadelphia have experienced delays in the past year, with the average delay time being 155 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Avelo Airlines have had the lowest number of delays on this route, with no flights being classified as delayed.
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Nordia,Sep 2025
KIN - MIA
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Nordia,Sep 2025
KIN - MIA
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Nordia,Sep 2025
KIN - MIA
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Nordia,Sep 2025
KIN - MIA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$127 | Average$216 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$140 | Average$235 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$193 | Average$397 | FlexibilityNo cancel fee | On-time71% |