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$293+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — OPO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$687
(United Airlines)

One-way from

$293
(Kiwi.com)
From Buffalo to Porto
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One-way flight from Buffalo to Porto
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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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/3110:37 amBUF - OPO
2 stops21h 03mUnited Airlines
Sat 11/86:00 amOPO - BUF
2 stops17h 35mUnited Airlines
Deal found 9/11$687
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/203:52 pmBUF - OPO
2 stops18h 38mKLM
Fri 10/109:20 amOPO - BUF
2 stops19h 19mKLM
Deal found 9/10$781
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:24 pmBUF - OPO
1 stop30h 31mUnited Airlines
Sat 10/1112:35 pmOPO - BUF
1 stop15h 07mUnited Airlines
Deal found 9/10$811
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:24 pmBUF - OPO
1 stop30h 31mUnited Airlines
Fri 10/1012:35 pmOPO - BUF
1 stop15h 30mUnited Airlines
Deal found 9/10$899
This Gurufare deal was found by Cheapflights users on 9/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:55 pmBUF - OPO
2 stops16h 45mLufthansa
Sat 11/812:35 pmOPO - BUF
1 stop15h 23mLufthansa
Deal found 9/11$912
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/10. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:35 pmBUF - OPO
2 stops14h 25mTAP AIR PORTUGAL
Wed 12/1010:00 amOPO - BUF
2 stops28h 20mTAP AIR PORTUGAL
Deal found 9/10$1,076
This Expedia deal was found by Cheapflights users on 9/10. 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.
Sat 9/206:00 amBUF - OPO
2 stops28h 30mMultiple Airlines
Sat 10/117:00 pmOPO - BUF
2 stops28h 25mMultiple Airlines
Deal found 9/10$1,104

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 September 11, 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

Fri 10/31

10:50 am-11:40 am

2 stops20h 50m

Porto

Sat 11/8

6:00 am-9:00 pm

2 stops20h 00m

$687

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 10/31

2:55 pm-11:40 am

2 stops16h 45m

Porto

Sat 11/8

12:35 pm-10:58 pm

1 stop15h 23m

$912

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sat 12/6

7:35 pm-2:00 pm

2 stops13h 25m

Porto

Wed 12/10

6:55 am-10:03 pm

2 stops20h 08m

$1,076

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 9/21

7:41 pm-8:20 am

3 stops55h 39m

$293

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sat 9/20

7:11 pm-8:50 am

3 stops56h 39m

$374

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 9/21

6:30 am-6:55 am

1 stop19h 25m

$530

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sat 9/20

10:25 am-6:55 am

1 stop15h 30m

$595

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 September 11, 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 in the morning, which can drop the price by up to 26% versus a flight at noon.

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 $1,076, United Airlines can have you in Porto from Buffalo in 13h 25m. Buffalo and Porto are separated by a distance of 3482 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Buffalo to Porto (average of $523). Flying from Buffalo to Porto in June is currently the most expensive (average of $1,027). 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 Porto?

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

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