Cheap Flights from Buffalo, NY to San Juan from $138

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On Cheapflightsplus.com you will find 25 connecting flights from Buffalo to San Juan. You can compare airfare deals from 2 airlines and multiple travel sites from $138, book and save on cheap plane tickets and last minute offers. Also check out BUF-SJU flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Buffalo to San Juan Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $138 (one-way), $237 (round-trip).
Direct flights
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Best Flights from Buffalo to San Juan Today

Take a look at the list of non stop flights and flights with layovers from Buffalo to San Juan with the lowest price of $138. Take a look at the list of flights with layovers from Buffalo to San Juan from $138. There’re no direct flights. The fastest connecting flight – 6h 34m.
Price Departure Arrival Flight Duration Airline Flight
from $138
Find flight
10:12
Buffalo
Niagara
 02:50+1 день
San Juan
Luis Munoz Marin Intl
 16h 38m
layover
10h 53m - Orlando
 Frontier Airlines
F91691
F94726
from $318
Find flight
19:15
Buffalo
Niagara
 11:57+1 день
San Juan
Luis Munoz Marin Intl
 16h 42m
layover
11h 11m - Newark
 United Airlines
UA4180
UA2143
from $324
Find flight
11:41
Buffalo
Niagara
 11:57+1 день
San Juan
Luis Munoz Marin Intl
 24h 16m
layover
18h 56m - Newark
 United Airlines
UA3515
UA2143
from $337
Find flight
07:05
Buffalo
Niagara
 14:44
San Juan
Luis Munoz Marin Intl
 7h 39m
layover
0h 49m - Chicago
 United Airlines
UA329
UA1996
from $371
Find flight
10:50
Buffalo
Niagara
 14:44+1 день
San Juan
Luis Munoz Marin Intl
 27h 54m
layover
21h 4m - Chicago
 United Airlines
UA606
UA1996
from $389
Find flight
06:30
Buffalo
Niagara
 13:45
San Juan
Luis Munoz Marin Intl
 7h 15m
layover
1h 50m - Newark
 United Airlines
UA4181
UA1556
from $389
Find flight
17:54
Buffalo
Niagara
 23:54+2 дня
San Juan
Luis Munoz Marin Intl
 30h 0m
layover
23h 13m - Chicago
 United Airlines
UA630
UA695
from $393
Find flight
19:45
Buffalo
Niagara
 12:34+1 день
San Juan
Luis Munoz Marin Intl
 16h 49m
layover
11h 34m - Washington D.C.
 United Airlines
UA4270
UA2021
from $395
Find flight
17:54
Buffalo
Niagara
 14:44+1 день
San Juan
Luis Munoz Marin Intl
 20h 50m
layover
13h 59m - Chicago
 United Airlines
UA630
UA1996
from $410
Find flight
07:00
Buffalo
Niagara
 23:54+1 день
San Juan
Luis Munoz Marin Intl
 16h 54m
layover
10h 7m - Chicago
 United Airlines
UA329
UA695
from $443
Find flight
17:54
Buffalo
Niagara
 14:44+1 день
San Juan
Luis Munoz Marin Intl
 20h 50m
layover
14h 2m - Chicago
 United Airlines
UA514
UA1996
from $480
Find flight
20:00
Buffalo
Niagara
 12:34+1 день
San Juan
Luis Munoz Marin Intl
 16h 34m
layover
11h 20m - Washington D.C.
 United Airlines
UA3644
UA2021
from $481
Find flight
17:23
Buffalo
Niagara
 23:57+1 день
San Juan
Luis Munoz Marin Intl
 6h 34m
layover
0h 54m - Newark
 United Airlines
UA4481
UA1543
from $486
Find flight
10:30
Buffalo
Niagara
 12:34+1 день
San Juan
Luis Munoz Marin Intl
 26h 4m
layover
20h 54m - Washington D.C.
 United Airlines
UA6178
UA2021
from $298
Find flight
13:57
Buffalo
Niagara
 05:30+1 день
San Juan
Luis Munoz Marin Intl
 15h 33m
layover
3h 30m - Chicago
2h 36m - Houston
 United Airlines
UA4381
UA2202
UA1497
from $486
Find flight
20:00
Buffalo
Niagara
 13:45+1 день
San Juan
Luis Munoz Marin Intl
 17h 45m
layover
9h 1m - Washington D.C.
2h 10m - Newark
 United Airlines
UA3644
UA2658
UA1556
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 15, 2025
Full flight schedule will help you in detecting at what time planes fly from Buffalo to San Juan. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:00 — 12:34
06:00 — 07:20 UA6172 United Airlines
Buffalo — Washington D.C.
1h 19m stop
08:39 — 12:34 UA2021 United Airlines
Washington D.C. — San Juan
6h 34m
including layover
Find flight
from$533
06:30 — 13:45
06:30 — 07:54 UA4181 United Airlines
Buffalo — Newark
1h 50m stop
09:44 — 13:45 UA1556 United Airlines
Newark — San Juan
7h 15m
including layover
Find flight
from$389
07:00 — 23:54
+1 day
07:00 — 07:56 UA329 United Airlines
Buffalo — Chicago
10h 7m stop
18:03 — 23:54 UA695 United Airlines
Chicago — San Juan
16h 54m
including layover
Find flight
from$410
07:05 — 14:44
07:00 — 07:56 UA329 United Airlines
Buffalo — Chicago
49m stop
08:49 — 14:44 UA1996 United Airlines
Chicago — San Juan
7h 39m
including layover
Find flight
from$337
10:12 — 02:50
+1 day
08:50 — 11:38 F91691 Frontier Airlines
Buffalo — Orlando
10h 53m stop
23:40 — 02:39 F94726 Frontier Airlines
Orlando — San Juan
16h 38m
including layover
Find flight
from$138
10:12 — 19:08
11:19 — 14:18 F91691 Frontier Airlines
Buffalo — Orlando
3h 2m stop
22:48 — 02:38 F93506 Frontier Airlines
Orlando — San Juan
8h 56m
including layover
Find flight
from$238
11:41 — 11:57
+1 day
11:37 — 12:56 UA3515 United Airlines
Buffalo — Newark
18h 56m stop
07:55 — 11:57 UA2143 United Airlines
Newark — San Juan
24h 16m
including layover
Find flight
from$324
13:57 — 23:54
+1 day
13:50 — 14:49 UA4381 United Airlines
Buffalo — Chicago
3h 8m stop
14:20 — 20:55 UA695 United Airlines
Chicago — San Juan
9h 57m
including layover
Find flight
from$542
17:54 — 23:54
+2 days
17:54 — 18:50 UA630 United Airlines
Buffalo — Chicago
23h 13m stop
18:03 — 23:54 UA695 United Airlines
Chicago — San Juan
30h
including layover
Find flight
from$389
17:54 — 14:44
+1 day
17:54 — 18:50 UA630 United Airlines
Buffalo — Chicago
13h 59m stop
08:49 — 14:44 UA1996 United Airlines
Chicago — San Juan
20h 50m
including layover
Find flight
from$395
19:15 — 11:57
+1 day
19:15 — 20:44 UA4180 United Airlines
Buffalo — Newark
11h 11m stop
07:55 — 11:57 UA2143 United Airlines
Newark — San Juan
16h 42m
including layover
Find flight
from$318
19:15 — 13:45
+1 day
19:15 — 20:44 UA4180 United Airlines
Buffalo — Newark
13h stop
09:44 — 13:45 UA1556 United Airlines
Newark — San Juan
18h 30m
including layover
Find flight
from$390
20:00 — 12:34
+1 day
20:00 — 21:19 UA3644 United Airlines
Buffalo — Washington D.C.
11h 20m stop
08:39 — 12:34 UA2021 United Airlines
Washington D.C. — San Juan
16h 34m
including layover
Find flight
from$480
13:57 — 05:30
+1 day
13:57 — 14:55 UA4381 United Airlines
Buffalo — Chicago
3h 30m stop
18:25 — 21:21 UA2202 United Airlines
Chicago — Houston
2h 36m stop
23:57 — 05:30 UA1497 United Airlines
Houston — San Juan
15h 33m
including layover
Find flight
from$298
20:00 — 13:45
+1 day
20:00 — 21:19 UA3644 United Airlines
Buffalo — Washington D.C.
9h 1m stop
06:20 — 07:34 UA2658 United Airlines
Washington D.C. — Newark
2h 10m stop
09:44 — 13:45 UA1556 United Airlines
Newark — San Juan
17h 45m
including layover
Find flight
from$486
*Departure and arrival times - local. Updated on August 15, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Buffalo to San Juan depends on and how to choose the most interesting flight option for you.

Distance between Buffalo and San Juan is 2976 miles. Time difference between the cities is 1h. Airplanes depart 06:00 to 20:00 from 1 Buffalo airport and arrive 06:00 to 20:00 to 2 San Juan airports. Average flight time is 16h 42m.

  • The fastest flight 6h 34m
  • Average flight time 16h 42m
  • The earliest flight 06:00
  • The latest flight 20:00
  • Distance 1850 ml

The cheapest months to travel to San Juan are august (from 138 $), january (from 183 $), july (from 238 $).

The most expensive months are november (from 642 $), july (from 238 $), january (from 183 $).

What is the lowest airfare Buffalo to San Juan?

The cheapest plane ticket found by our users is $138. This airfare is for economy class on one-way F91691 flight by Frontier Airlines for August 22, 2025 which leaves Niagara in Buffalo at 10:12 am and arrives at San Juan Luis Munoz Marin Intl at 02:50.

Economy class
$138
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Business class
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First class
?
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Popular Airlines on the Route

The flight Buffalo — San Juan is served by 2 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Frontier Airlines - 2 departures per week at the price of from $ 138 . And the most expensive tickets are offered by United Airlines airline - from $ 1603.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 25 flights with layovers on the route. The fastest connecting flight is UA4481 by United Airlines takes 6h 34m and the cheapest is F91691 by Frontier Airlines for $138.

  • F9 - Frontier Airlines
    from $138
    Find
  • UA - United Airlines
    from $298
    Find
See more connecting flights

Airports

You can fly from Buffalo to San Juan from 1 airports (Niagara).

Buffalo airports

  • Niagara-BUF
    from $138
    Find

San Juan airports

  • Isla Grande-SIG
    Find
  • Luis Munoz Marin Intl-SJU
    Find

Airplanes

There are flights to San Juan from Buffalo by 2 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Buffalo

You may also consider searching for discounted plane tickets to some other popular places from Buffalo within United States.

Top International Destinations from Buffalo

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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