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$416+ Cheap flights from Buffalo (BUF) to Porto (OPO)

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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — OPO
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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Find flight deals from Buffalo to Porto

Cheapest flights from Buffalo to Porto
Explore the most affordable flight options available from Buffalo to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 28, 2025.

This KLM deal was found by Cheapflights users on 10/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/11:11 pmBUF - OPO
2 stops16h 19mKLM
lun. 12/86:30 amOPO - BUF
2 stops22h 46mKLM
Deal found 10/26$541
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/113:55 pmBUF - OPO
2 stops16h 25mKLM
jue. 12/1811:20 amOPO - BUF
2 stops17h 56mKLM
Deal found 10/27$552
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/1612:05 pmBUF - OPO
2 stops17h 25mKLM
mar. 12/96:05 amOPO - BUF
2 stops18h 14mKLM
Deal found 10/27$741
This United deal was found by Cheapflights users on 10/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/1612:15 pmBUF - OPO
1 stop16h 15mMultiple Airlines
mar. 12/912:30 pmOPO - BUF
2 stops16h 04mMultiple Airlines
Deal found 10/27$753

Cheap flight deals from Buffalo to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Porto (OPO). 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 octubre 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$541
(KLM)

One-way from

$416
(Kiwi.com)
Provider with most accurate pricing for Buffalo-Porto flight deals.
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Provider most trusted by Cheapflights users for Buffalo-Porto flights.
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From Buffalo to Porto
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One-way flight from Buffalo to Porto
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Porto 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 octubre 28, 2025.
Use the filters below to find and compare flights from Buffalo to Porto that are best for you.

Fly from

Buffalo

Fly to

Porto

Route

Depart

Return

Price

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

lun. 12/1

1:11 pm-10:30 am

2 stops16h 19m

Porto

lun. 12/8

6:30 am-12:16 am

2 stops22h 46m

$541

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

jue. 12/11

3:55 pm-1:20 pm

2 stops16h 25m

Porto

jue. 12/18

11:20 am-12:16 am

2 stops17h 56m

$552

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

dom. 11/16

12:05 pm-10:30 am

2 stops17h 25m

Porto

mar. 12/9

6:05 am-7:19 pm

2 stops18h 14m

$741

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

dom. 11/16

12:15 pm-9:30 am

1 stop16h 15m

Porto

mar. 12/9

12:30 pm-11:34 pm

2 stops16h 04m

$753

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

mar. 11/25

6:37 pm-2:55 pm

3 stops39h 18m

$416

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

mar. 11/25

12:17 pm-9:30 am

1 stop16h 13m

$466

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

mar. 11/25

2:55 pm-9:30 am

2 stops13h 35m

$468

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

vie. 12/5

3:00 pm-12:05 pm

2 stops16h 05m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Compare providers for flights from Buffalo to Porto

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 Buffalo to Porto in October.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Buffalo-Porto flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Porto flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Buffalo-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Porto flights, Cheapflights users trust eDreams the most. eDreams 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 Buffalo-Porto 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 Buffalo to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Buffalo 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 Buffalo to Porto

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

Find hourly flight availability from Buffalo to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 28, 2025.

When flying from Buffalo to Porto, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 59% versus a flight in the evening.

Related info for your journey

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

  • How long is the flight from Buffalo to Porto?

    For as low as $541, KLM can have you in Porto from Buffalo in 16h 19m. Buffalo and Porto are separated by a distance of 3482 mi.

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

    $466 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on United Airlines and Brussels Airlines, with prices starting from $468 and $641, respectively.

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

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

  • How can I find direct flights from Buffalo to Porto?

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

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

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

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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