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Cheap flights from Buffalo to San Juan

BUF — SJU
19 Nov — 26 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Buffalo to San Juan

Popular in

December

Cheapest in

October

Average price

C$ 464
Highest demand for flights based on searches. 13% potential increase in price (C$ 120 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 36 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Best time to book a flight from Buffalo to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Buffalo with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Buffalo to San Juan

How far ahead should I book a flight from Buffalo to San Juan?

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Buffalo to San Juan?

Currently, October is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 464). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 818). 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.

What is the cheapest time of day to fly from BUF to SJU?

When flying from Buffalo to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest,JetBlue, andAmerican Airlines from Buffalo to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,211 reviews
Check prices

Overall

7.9

Food

7.0

Entertainment

7.4

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Southwest
7.9
Good
4,211 reviews
Southwest
7.9
Good
4,211 reviews
Check prices

Overall

7.9

Food

7.0

Entertainment

7.4

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
JetBlue
7.1
Good
3,059 reviews
Southwest
7.9
Good
4,211 reviews
Check prices

Overall

7.9

Food

7.0

Entertainment

7.4

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
American Airlines
7.0
Good
12,179 reviews
Southwest
7.9
Good
4,211 reviews
Check prices

Overall

7.9

Food

7.0

Entertainment

7.4

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Frontier
5.5
Fair
2,523 reviews
Southwest
7.9
Good
4,211 reviews
Check prices

Overall

7.9

Food

7.0

Entertainment

7.4

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

  • What airport do you fly from for flights from Buffalo to San Juan?

    For a flight from Buffalo to San Juan, you will be flying from Buffalo. Buffalo (BUF) is just 13.4 km from the centre of the city. Buffalo is the only Buffalo airport and it handles 0 outbound flights to San Juan per day. 4 airlines have flights to San Juan from Buffalo on a regular basis.

  • What are the cheapest airlines flying from Buffalo to San Juan round-trip?

    Currently priced at C$ 205, American Airlines will fly you from Buffalo to San Juan and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and JetBlue - these airlines can fly you to your destination from C$ 242 and C$ 300, respectively. American Airlines is currently priced 62% below the average price you’ll pay for this route.

  • What are the cheapest flights from Buffalo to San Juan?

    Looking for the cheapest flight from Buffalo to San Juan? While on average our users pay C$ 586, our data indicates the cheapest price to be C$ 410. The most popular route (Buffalo - San Juan Luis Munoz Marin Intl), is priced around C$ 364.

  • Can I find deals for flights from Buffalo to San Juan that include hotel bookings?

    Yes. In addition to deals on Buffalo to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to San Juan.

  • Can I find deals for business class flights from Buffalo to San Juan?

    Yes. Cheapflights offers flight deals from Buffalo to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buffalo to San Juan?

    Currently, October is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 464). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 818). 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.

See more FAQs

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Alternative routes for Buffalo to San Juan

Buffalo to Luis Munoz Marin Intl flights
Newark to Luis Munoz Marin Intl flights
John F Kennedy Intl to Luis Munoz Marin Intl flights

Top 4 airlines flying from Buffalo to San Juan

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 205AverageC$ 498FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 242AverageC$ 513FlexibilityNo cancel feeOn-time62%
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JetBlueCheapestC$ 300AverageC$ 512FlexibilityNo cancel feeOn-time62%
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SouthwestCheapestC$ 306AverageC$ 642FlexibilityNo cancel feeOn-time63%
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How does Cheapflights help users find flights from Buffalo to San Juan?

Cheapflights makes it easy to find Buffalo to San Juan flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to San Juan?

Millions of users choose and trust Cheapflights to book the best flight deals from Buffalo to San Juan for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Buffalo to San Juan with no change fees?

Need flexible booking options for your flight to San Juan from Buffalo? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Buffalo to San Juan become cheaper?

Yes! Start tracking prices for Buffalo to San Juan flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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