San Juan to Philadelphia SJU → PHL
Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL)
The cheapest return found recently is $178 with Frontier Airlines, 11 Dec – 14 Dec, found yesterday. The cheapest one-way found recently is $37 with Frontier Airlines, 30 Oct, found yesterday.
Return
The cheapest return fare on each of 6 departure dates is usually $182 to $350.
Cheapest return found recently
$178
11 Dec – 14 Dec · Frontier Airlines
Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL)
Leaves 9:52 p.m. · Return leaves 8:40 a.m. · 19 h 38 min of travel, both ways together
out nonstop, back 1 stop
found yesterday
Cheapest nonstop return
$126
4 Feb 2027 – 7 Feb 2027 · Frontier Airlines
Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL)
Leaves 9:14 p.m. · Return leaves 6:05 a.m. · 8 h 6 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Found recently, and the cheapest we hold
$178 11 Dec – 14 Decfound yesterdaySee prices for these dates
$126 4 Feb 2027 – 7 Feb 2027found 4 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $114 to $135.
At $178, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 6 departure dates from 10 Dec to 4 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold 3-night return fares on 1 other departure date within 3 days of 11 Dec, and it is not cheaper.
Every date we hold
7 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 10 Dec – 13 Dec | $195 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out nonstop, back 1 stop | found yesterday | See prices for these dates |
| 11 Dec – 14 Dec | $178 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out nonstop, back 1 stop | found yesterday | See prices for these dates |
| 23 Dec – 28 Dec | $325 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out nonstop, back 1 stop | found yesterday | See prices for these dates |
| 4 Jan 2027 – 15 Jan 2027 | $472 | American Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out 1 stop, back nonstop | found 2 days ago | See prices for these dates |
| 5 Jan 2027 – 15 Jan 2027 | $358 | American Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out 1 stop, back nonstop | found 2 days ago | See prices for these dates |
| 4 Feb 2027 – 7 Feb 2027 | $126 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
February 2027 is the cheapest month — from $126.
Airlines on the cheapest dates: Frontier Airlines, American Airlines.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $53 to $70.
Cheapest one-way found recently
$37
30 Oct · Frontier Airlines
Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL)
Leaves 6:15 a.m. · 4 h 10 min trip
nonstop
found yesterday
Cheapest nonstop one-way
$37
30 Oct · Frontier Airlines
Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL)
Leaves 6:15 a.m. · 4 h 10 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$37 30 Octfound yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $37 to $59.
At $37, the cheapest one-way found recently is at the low end of that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 23 Oct to 17 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 30 Oct to compare.
Every date we hold
5 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Oct | $109 | jetBlue | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | nonstop | found 4 days ago | Open this trip |
| 30 Oct | $37 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | nonstop | found yesterday | Open this trip |
| 3 Nov | $70 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | nonstop | found 2 days ago | Open this trip |
| 20 Nov | $69 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | nonstop | found 3 days ago | Open this trip |
| 17 Dec | $53 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Philadelphia International Airport (PHL) | nonstop | found 6 days ago | Open this trip |
Which month looks cheapest?
October 2026 is the cheapest month — from $37.
Airlines on the cheapest dates: Frontier Airlines, jetBlue.
Premium cabin fares from San Juan to Philadelphia
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 11 Dec – 14 Dec in another cabin: Premium economy · Business · First
Today's prices for 30 Oct in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Juan to Philadelphia?
Return
Fares 30 to 59 days before departure were typically 30% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $164 | $139 | +43% | 8 |
| 7–13 days | $139 | $139 | +21% | 7 |
| 14–29 days | $135 | $114 | +17% | 18 |
| 30–59 days | $115 | $114 | Cheapest seen | 17 |
| 60–89 days | $161 | $145 | +40% | 19 |
| 90–179 days | $239 | $126 | +108% | 12 |
One-way
Fares 7 to 13 days before departure were typically 54% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $105 | $48 | +118% | 8 |
| 7–13 days | $48 | $37 | Cheapest seen | 8 |
| 14–29 days | $64 | $57 | +33% | 14 |
| 30–59 days | $64 | $59 | +33% | 18 |
| 60–89 days | $58 | $53 | +21% | 24 |
| 90–179 days | $153 | $153 | +219% | 10 |
| 180+ days | $143 | $143 | +198% | 15 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Juan → New York
130 km from Philadelphia
$247
$69 more than flying to Philadelphia
13 Nov – 15 Nov · SJU → JFK · out 1 stop, back 1 stop
found today
Aguadilla → Philadelphia
108 km from San Juan
$549
$371 more than flying from San Juan
5 Jan 2027 – 15 Jan 2027 · BQN → PHL · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Juan → Baltimore
145 km from Philadelphia
$43
$6 more than flying to Philadelphia
24 Nov · SJU → BWI · nonstop
found yesterday
San Juan → New York
130 km from Philadelphia
$197
$160 more than flying to Philadelphia
28 Feb 2027 · SJU → LGA · 2 stops
found 2 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 11 Dec – 14 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work