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$476+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — OPO
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:25 pm
BUF
-
OPO
1 stop10h 05m
United Airlines
Sun 3/16:00 am
OPO
-
BUF
2 stops22h 44m
United Airlines
Deal found 1/25$487
This Trip.com deal was found by Cheapflights users on 1/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:00 am
BUF
-
OPO
2 stops46h 10m
Multiple Airlines
Wed 2/256:00 am
OPO
-
BUF
2 stops20h 25m
Multiple Airlines
Deal found 1/26$574
This Ovago deal was found by Cheapflights users on 1/25. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:25 pm
BUF
-
OPO
1 stop10h 05m
Lufthansa
Sun 3/112:35 pm
OPO
-
BUF
1 stop13h 27m
Lufthansa
Deal found 1/25$650
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:15 am
BUF
-
OPO
2 stops23h 15m
Delta
Tue 2/245:00 am
OPO
-
BUF
2 stops24h 14m
Delta
Deal found 1/26$651
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/165:44 pm
BUF
-
OPO
2 stops16h 41m
Delta
Mon 2/2311:15 am
OPO
-
BUF
2 stops34h 44m
Delta
Deal found 1/26$657
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:41 pm
BUF
-
OPO
2 stops38h 44m
Delta
Thu 2/265:00 am
OPO
-
BUF
2 stops17h 40m
Delta
Deal found 1/26$666

Find 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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$487
(United Airlines)

One-way from

$476
(oojo)
Provider with most accurate pricing for Buffalo-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Porto flights.
Search Deals
From Buffalo to Porto
Search Deals
One-way flight from Buffalo to Porto
Search Deals

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 January 28, 2026.
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

Wed 2/25

6:25 pm-9:30 am

1 stop10h 05m

Porto

Sun 3/1

6:00 am-11:44 pm

2 stops22h 44m

$487

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 2/25

6:25 pm-9:30 am

1 stop10h 05m

Porto

Sun 3/1

12:35 pm-9:02 pm

1 stop13h 27m

$650

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 2/18

6:15 am-10:30 am

2 stops23h 15m

Porto

Mon 2/23

11:15 am-4:59 pm

2 stops34h 44m

$651

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 2/18

6:15 am-10:30 am

2 stops23h 15m

Porto

Thu 2/26

11:15 am-11:09 am

2 stops28h 54m

$651

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 2/18

6:15 am-10:30 am

2 stops23h 15m

Porto

Tue 2/24

5:00 am-12:14 am

2 stops24h 14m

$651

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 2/16

5:44 pm-10:25 pm

2 stops23h 41m

Porto

Fri 2/27

5:00 am-12:14 am

2 stops24h 14m

$657

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 2/16

5:44 pm-3:25 pm

2 stops16h 41m

Porto

Mon 2/23

11:15 am-4:59 pm

2 stops34h 44m

$657

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 5/29

12:25 pm-11:40 am

2 stops18h 15m

$476

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 5/29

11:15 am-10:30 am

1 stop18h 15m

$609

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Porto flight deals on Cheapflights vs. FlightHub >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 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 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.

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 $487, United Airlines can have you in Porto from Buffalo in 10h 05m. Buffalo and Porto are separated by a distance of 3482 mi.

  • 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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