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$98+ Cheap flights from Luis Munoz Marin Intl (SJU) 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Apr 28 — May 51
Tue 4/28
Tue 5/5
1 adult, Economy
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Cheap flight deals from Luis Munoz Marin Intl to Buffalo

Cheapest flights from Luis Munoz Marin Intl to Buffalo
Explore the most affordable flight options available from Luis Munoz Marin Intl to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 29, 2026.

This Expedia deal was found by Cheapflights users on 3/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:20 pm
SJU
-
BUF
Nonstop4h 38m
JetBlue
Mon 8/107:05 am
BUF
-
SJU
Nonstop4h 33m
JetBlue
Deal found 3/28$161
This Priceline deal was found by Cheapflights users on 3/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:21 am
SJU
-
BUF
1 stop6h 46m
Frontier
Sun 4/268:18 pm
BUF
-
SJU
1 stop27h 25m
Frontier
Deal found 3/28$176
This Priceline deal was found by Cheapflights users on 3/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:30 am
SJU
-
BUF
1 stop11h 34m
Frontier
Sun 5/108:49 pm
BUF
-
SJU
1 stop11h 15m
Frontier
Deal found 3/28$186
This Expedia deal was found by Cheapflights users on 3/27. 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.
Thu 4/163:19 pm
SJU
-
BUF
1 stop18h 38m
Frontier
Thu 4/238:21 pm
BUF
-
SJU
1 stop27h 22m
Frontier
Deal found 3/27$194
This Frontier deal was found by Cheapflights users on 3/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:09 am
SJU
-
BUF
1 stop9h 37m
Frontier
Sun 5/178:49 pm
BUF
-
SJU
1 stop11h 15m
Frontier
Deal found 3/29$204
This Frontier deal was found by Cheapflights users on 3/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:00 am
SJU
-
BUF
1 stop11h 04m
Frontier
Sun 6/78:49 pm
BUF
-
SJU
1 stop11h 15m
Frontier
Deal found 3/26$212
This CheapOair deal was found by Cheapflights users on 3/25. 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.
Wed 4/153:19 pm
SJU
-
BUF
1 stop27h 54m
Frontier
Sat 4/1811:44 am
BUF
-
SJU
1 stop14h 17m
Frontier
Deal found 3/25$220
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:54 am
SJU
-
BUF
1 stop8h 32m
Frontier
Mon 4/2711:19 am
BUF
-
SJU
1 stop14h 42m
Frontier
Deal found 3/28$223
This Travelocity deal was found by Cheapflights users on 3/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:09 pm
SJU
-
BUF
1 stop24h 50m
Frontier
Fri 5/297:52 pm
BUF
-
SJU
1 stop6h 16m
Frontier
Deal found 3/25$229
This CheapOair deal was found by Cheapflights users on 3/29. 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.
Tue 6/23:58 pm
SJU
-
BUF
1 stop27h 01m
Frontier
Sun 6/78:49 pm
BUF
-
SJU
1 stop29h 19m
Frontier
Deal found 3/29$232
This Priceline deal was found by Cheapflights users on 3/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:30 pm
SJU
-
BUF
Nonstop4h 49m
Multiple Airlines
Sun 4/268:18 pm
BUF
-
SJU
1 stop27h 25m
Multiple Airlines
Deal found 3/28$237

Find flight deals from Luis Munoz Marin Intl to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) 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 March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$176
(Priceline)

One-way from

$98
(Frontier)

Popular in

December

Cheapest in

September

Average price

$312
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Buffalo flights.
Search Deals
From San Juan Luis Munoz Marin Intl to Buffalo
Search Deals
One-way flight from San Juan Luis Munoz Marin Intl to Buffalo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl 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 March 29, 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 5/6

2:45 pm-11:37 pm

1 stop8h 52m

Buffalo

Wed 5/13

12:18 pm-10:17 pm

1 stop9h 59m

$274

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 4/29

1:00 am-9:53 am

2 stops8h 53m

Buffalo

Mon 5/4

6:10 am-12:34 pm

1 stop6h 24m

$364

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 6/24

5:30 am-2:20 pm

2 stops8h 50m

Buffalo

Sat 6/27

5:25 pm-11:40 pm

1 stop6h 15m

$399

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Tue 6/23

3:06 am-7:07 pm

1 stop16h 01m

Buffalo

Sat 6/27

10:05 pm-5:21 pm

1 stop19h 16m

$421

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Thu 4/2

2:50 pm-12:10 am

2 stops9h 20m

Buffalo

Thu 4/9

4:00 pm-11:40 pm

1 stop7h 40m

$424

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Mon 4/6

1:00 am-9:47 am

1 stop8h 47m

Buffalo

Tue 4/7

1:52 pm-11:50 pm

2 stops9h 58m

$439
Quickest round-trip

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 4/1

7:27 pm-12:15 am

Nonstop4h 48m

Buffalo

Mon 4/6

7:10 am-11:05 am

Nonstop3h 55m

$456

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 6/24

7:55 am-11:39 pm

2 stops15h 44m

Buffalo

Wed 7/1

7:52 pm-8:09 am

1 stop12h 17m

$483

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 4/24

10:00 am-7:45 pm

2 stops9h 45m

Buffalo

Thu 4/30

4:00 pm-11:55 pm

2 stops7h 55m

$499

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 4/1

1:25 pm-11:50 pm

2 stops10h 25m

Buffalo

Mon 4/6

7:00 am-2:44 pm

1 stop7h 44m

$511

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Luis Munoz Marin Intl to Buffalo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Luis Munoz Marin Intl to Buffalo in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Buffalo flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-Buffalo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Luis Munoz Marin Intl to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Buffalo

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Buffalo. Price data was last updated on March 13, 2026.

Booking 71 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 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 Luis Munoz Marin Intl Airport to Buffalo?

Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Buffalo (average of $117). Flying from San Juan Luis Munoz Marin Intl Airport 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.

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

Find hourly flight availability from Luis Munoz Marin Intl to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 29, 2026.

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

How much does it cost to fly round-trip from San Juan Luis Munoz Marin Intl Airport 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 March 29, 2026.
Read reviews from past customers who have flown Southwest,Delta, andJetBlue from San Juan Luis Munoz Marin Intl Airport to Buffalo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,357 reviews
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,908 reviews
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,523 reviews
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,009 reviews
Southwest
8.0
Very good
4,331 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl?

    Buffalo (BUF) is the airport you will fly into if you book a flight from San Juan Luis Munoz Marin Intl to Buffalo. You should not have trouble finding flights to Buffalo from San Juan Luis Munoz Marin Intl; the airport handles an average of 0 inbound flights from San Juan Luis Munoz Marin Intl per day. You should also have plenty of airline options to choose from since 5 airlines have flights to the Buffalo airport from San Juan Luis Munoz Marin Intl. It is only a 8.3 mi journey from Buffalo (BUF) to Buffalo’s city center.

  • How long is the flight from San Juan Luis Munoz Marin Intl Airport to Buffalo?

    Delta, United Airlines, and Southwest can get you from San Juan Luis Munoz Marin Intl Airport to Buffalo in just under 8h 50m. Your travel time can differ by up to 03m. There are 1848 mi between San Juan Luis Munoz Marin Intl Airport and Buffalo. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Juan Luis Munoz Marin Intl Airport to Buffalo round-trip?

    Currently priced at $80, Delta will fly you from San Juan Luis Munoz Marin Intl Airport to Buffalo and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Southwest - these airlines can fly you to your destination from $124 and $195, respectively. These flights start at 75% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Juan Luis Munoz Marin Intl Airport to Buffalo one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $90. Delta flights start at $102 while deals on United Airlines start at $106 one-way.

  • What are the cheapest flights from San Juan Luis Munoz Marin Intl Airport to Buffalo?

    While on average a flight from San Juan Luis Munoz Marin Intl Airport to Buffalo is generally $263, our data shows the cheapest flight currently is $130. When looking at the most popular route, (San Juan Luis Munoz Marin Intl - Buffalo), you can expect to pay $232 for that flight.

  • Can I find deals for flights from Luis Munoz Marin Intl to Buffalo that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Buffalo?

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

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Buffalo?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Buffalo?

    Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Buffalo (average of $117). Flying from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to John F Kennedy Intl flights
Luis Munoz Marin Intl to Newark flights
Luis Munoz Marin Intl to White Plains flights

Top 5 airlines flying from Luis Munoz Marin Intl to Buffalo

Discover the top 5 airlines that operate flights from Luis Munoz Marin Intl 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 March 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$80Average$291FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$124Average$231FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$195Average$395FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$215Average$439FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$239Average$357FlexibilityNo cancel feeOn-time62%

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