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$90+ Cheap flights from San Juan to Buffalo (BUF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from San Juan to Buffalo

Cheapest flights from San Juan to Buffalo
Explore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 31, 2025.

This Delta deal was found by Cheapflights users on 12/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:48 pmSJU - BUF
1 stop7h 40mDelta
Wed 1/77:00 amBUF - SJU
1 stop8h 50mDelta
Deal found 12/28$307
This Expedia deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:59 amSJU - BUF
1 stop9h 36mJetBlue
Mon 1/55:09 pmBUF - SJU
1 stop6h 47mJetBlue
Deal found 12/29$437
This CheapOair deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:59 amSJU - BUF
1 stop9h 36mJetBlue
Wed 1/710:00 amBUF - SJU
1 stop14h 22mJetBlue
Deal found 12/29$438
This Delta deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:48 pmSJU - BUF
1 stop7h 40mDelta
Sun 1/46:10 amBUF - SJU
1 stop8h 37mDelta
Deal found 12/29$442
This Delta deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:44 pmSJU - BUF
1 stop7h 49mDelta
Sun 1/46:00 amBUF - SJU
1 stop9h 51mDelta
Deal found 12/29$469
This Southwest deal was found by Cheapflights users on 12/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:15 pmSJU - BUF
1 stop6h 50mSouthwest
Wed 1/78:45 amBUF - SJU
2 stops9h 20mSouthwest
Deal found 12/28$477
This American Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:35 pmSJU - BUF
1 stop15h 32mAmerican Airlines
Sun 1/47:15 pmBUF - SJU
1 stop15h 24mAmerican Airlines
Deal found 12/30$481
This Southwest deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:15 pmSJU - BUF
1 stop6h 50mSouthwest
Mon 1/512:40 pmBUF - SJU
1 stop10h 55mSouthwest
Deal found 12/29$492
This United Airlines deal was found by Cheapflights users on 12/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:45 amSJU - BUF
2 stops14h 09mUnited Airlines
Wed 1/76:00 amBUF - SJU
2 stops14h 00mUnited Airlines
Deal found 12/28$502

Find flight deals from San Juan to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 31, 2025.

Round-trip from

$216
(CheapOair)

One-way from

$90
(Priceline)

Popular in

December

Cheapest in

September

Average price

$453
From San Juan to Buffalo
Search Deals
One-way flight from San Juan to Buffalo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 31, 2025.
Use the filters below to find and compare flights from San Juan to Buffalo that are best for you.

Fly from

San Juan

Fly to

Buffalo

Route

Depart

Return

Price

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Thu 3/12

5:00 am-11:40 am

1 stop6h 40m

Buffalo

Mon 3/16

3:55 pm-12:25 am

1 stop8h 30m

$225

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Mon 1/12

2:05 am-1:24 pm

2 stops12h 19m

Buffalo

Sat 1/17

2:49 pm-10:22 pm

1 stop6h 33m

$227

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sat 5/9

4:30 pm-11:50 pm

1 stop7h 20m

Buffalo

Sat 5/16

10:44 am-10:05 pm

1 stop11h 21m

$231

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Thu 3/5

7:33 am-10:41 pm

1 stop16h 08m

Buffalo

Tue 3/10

11:23 am-8:34 pm

2 stops9h 11m

$235

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 2/4

6:00 am-3:34 pm

2 stops10h 34m

Buffalo

Sun 2/8

11:50 am-11:56 pm

1 stop11h 06m

$235

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 3/25

7:40 am-11:50 pm

1 stop16h 10m

Buffalo

Sat 3/28

2:45 pm-11:52 pm

2 stops9h 07m

$236

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 1/16

8:10 am-2:14 pm

1 stop7h 04m

Buffalo

Sun 1/18

2:49 pm-10:22 pm

1 stop6h 33m

$245

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sat 5/9

11:59 pm-9:00 am

1 stop9h 01m

Buffalo

Sat 5/16

7:39 pm-2:07 am

1 stop6h 28m

$247

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 2/13

3:00 pm-11:51 pm

1 stop9h 51m

Buffalo

Mon 2/16

8:45 pm-2:28 am

1 stop28h 43m

$248

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 2/18

4:07 pm-10:12 am

2 stops19h 05m

Buffalo

Mon 2/23

4:45 pm-2:25 am

1 stop8h 40m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 21 results
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Best time to book a flight from San Juan to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from San Juan with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Buffalo. Price data was last updated on December 26, 2025.

Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to Buffalo. 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 San Juan to Buffalo?

Currently, September is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $118). Flying from San Juan to Buffalo in October is currently the most expensive (average of $225). 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.

How much does it cost to fly round-trip from San Juan to Buffalo?

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buffalo. Reviews last updated December 31, 2025.
Read through reviews of airlines operating flights from San Juan to Buffalo, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,016 reviews
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,074 reviews
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,903 reviews
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,067 reviews
Southwest
8.0
Very good
4,251 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from San Juan to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into Buffalo (BUF) if they book a flight to Buffalo from San Juan. On average, Buffalo has 0 inbound flights from San Juan per day from 5 airlines. Buffalo is conveniently located just 8.3 mi from Buffalo’s city center.

  • How long is the flight from San Juan to Buffalo?

    For as low as $225, Frontier can have you in Buffalo from San Juan in 6h 40m. There are 1848 mi between San Juan and Buffalo. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Delta, at $80, was found to be the cheapest airline from San Juan to Buffalo.Alternate airlines to your destination round-trip include Frontier and Southwest. Delta is currently priced 76% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Juan to Buffalo one-way?

    $79 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $102 and $106, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Juan to Buffalo 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 San Juan to Buffalo?

    Currently, September is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $118). Flying from San Juan to Buffalo in October is currently the most expensive (average of $225). 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

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca

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Alternative routes for San Juan to Buffalo

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Top 5 airlines flying from San Juan to Buffalo

Discover the top 5 airlines that operate flights from San Juan to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$102Average$306FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$124Average$213FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$211Average$456FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$215Average$390FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$264Average$425FlexibilityNo cancel feeOn-time62%

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