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Cheap flights from Buffalo to Porto from $463

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Porto departing on 9/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Buffalo to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:45 pm - 9:30 amBUF  Buffalo-OPO Porto
9h 45m1 stop Newark
United Airlines Logo
6:00 am - 8:31 pmOPO  Porto-BUF Buffalo
19h 31m2 stops Frankfurt am Main Chicago O'Hare Intl
$717United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
7:00 am - 9:30 amBUF  Buffalo-OPO Porto
21h 30m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:00 am - 10:37 pmOPO  Porto-BUF Buffalo
21h 37m2 stops Frankfurt am Main Newark
$722United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
6:45 pm - 9:30 amBUF  Buffalo-OPO Porto
9h 45m1 stop Newark
United Airlines Logo
12:35 pm - 10:37 pmOPO  Porto-BUF Buffalo
15h 02m1 stop Newark
$726United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
8:55 pm - 9:30 amBUF  Buffalo-OPO Porto
31h 35m1 stop Newark
United Airlines Logo
6:00 am - 11:49 pmOPO  Porto-BUF Buffalo
22h 49m2 stops Frankfurt am Main Newark
$772United Airlines
Sat, Nov 7 - Sat, Nov 14
Delta Logo
7:50 pm - 10:00 pmBUF  Buffalo-OPO Porto
21h 10m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
11:15 am - 11:59 pmOPO  Porto-BUF Buffalo
17h 44m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$773Delta
Sat, Nov 7 - Sat, Nov 14
Iberia Logo
4:16 pm - 8:00 pmBUF  Buffalo-OPO Porto
22h 44m2 stops Boston Logan Intl Madrid Barajas
Iberia Logo
8:40 pm - 9:40 pmOPO  Porto-BUF Buffalo
30h 00m2 stops Madrid Barajas Chicago O'Hare Intl
$826Iberia
Sun, Nov 1 - Sat, Nov 7
Delta Logo
11:06 am - 10:30 amBUF  Buffalo-OPO Porto
18h 24m1 stop New York John F Kennedy Intl
Delta Logo
5:55 am - 11:59 pmOPO  Porto-BUF Buffalo
23h 04m2 stops Paris Charles de Gaulle New York John F Kennedy Intl
$944Delta
Mon, Sep 28 - Sat, Oct 10
Delta Logo
7:55 pm - 10:00 pmBUF  Buffalo-OPO Porto
21h 05m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
5:55 am - 11:59 pmOPO  Porto-BUF Buffalo
23h 04m2 stops Paris Charles de Gaulle New York John F Kennedy Intl
$948Delta
Mon, Sep 28 - Sat, Oct 10
Delta Logo
11:20 am - 9:05 amBUF  Buffalo-OPO Porto
16h 45m1 stop New York John F Kennedy Intl
Delta Logo
11:00 am - 6:56 pmOPO  Porto-BUF Buffalo
12h 56m1 stop New York John F Kennedy Intl
$1,139Delta
Sun, Nov 1 - Sat, Nov 7
Multiple Airlines Logo
2:23 pm - 10:55 amBUF  Buffalo-OPO Porto
15h 32m1 stop Boston Logan Intl
Multiple Airlines Logo
5:40 pm - 11:14 amOPO  Porto-BUF Buffalo
22h 34m1 stop Boston Logan Intl
$1,196Multiple Airlines
Mon, Sep 28 - Sat, Oct 10

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United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
Dec 6
BUF6:45 pmBuffalo
9h 45m
1 stop
OPO9:30 amPorto
Dec 10
OPO6:00 amPorto
19h 31m
2 stops
BUF8:31 pmBuffalo
$717
United Airlines
Dec 6
BUF7:00 amBuffalo
21h 30m
2 stops
OPO9:30 amPorto
Dec 10
OPO6:00 amPorto
21h 37m
2 stops
BUF10:37 pmBuffalo
$722
United Airlines
Dec 6
BUF6:45 pmBuffalo
9h 45m
1 stop
OPO9:30 amPorto
Dec 10
OPO12:35 pmPorto
15h 02m
1 stop
BUF10:37 pmBuffalo
$726

Delta flights from Buffalo to Porto

Our best Delta deals on Buffalo to Porto flight tickets
Delta
Nov 7
BUF7:50 pmBuffalo
21h 10m
2 stops
OPO10:00 pmPorto
Nov 14
OPO11:15 amPorto
17h 44m
2 stops
BUF11:59 pmBuffalo
$773
Delta
Sep 28
BUF11:06 amBuffalo
18h 24m
1 stop
OPO10:30 amPorto
Oct 10
OPO5:55 amPorto
23h 04m
2 stops
BUF11:59 pmBuffalo
$944
Delta
Sep 28
BUF7:55 pmBuffalo
21h 05m
2 stops
OPO10:00 pmPorto
Oct 10
OPO5:55 amPorto
23h 04m
2 stops
BUF11:59 pmBuffalo
$948

momondo 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, momondo users made 832,500 searches. Data last updated August 12, 2026.
Use the filters below to find and compare flights from Buffalo to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sun 12/6

6:45 pm-9:30 am

1 stop9h 45m

Porto

Thu 12/10

6:00 am-8:31 pm

2 stops19h 31m

$717

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sun 12/6

7:00 am-9:30 am

2 stops21h 30m

Porto

Thu 12/10

6:00 am-10:37 pm

2 stops21h 37m

$722
Quickest round-trip

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sun 12/6

6:45 pm-9:30 am

1 stop9h 45m

Porto

Thu 12/10

12:35 pm-10:37 pm

1 stop15h 02m

$726

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sat 11/7

8:55 pm-9:30 am

1 stop31h 35m

Porto

Sat 11/14

6:00 am-11:49 pm

2 stops22h 49m

$772

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sat 11/7

7:50 pm-10:00 pm

2 stops21h 10m

Porto

Sat 11/14

11:15 am-11:59 pm

2 stops17h 44m

$773

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sun 11/1

4:16 pm-8:00 pm

2 stops22h 44m

Porto

Sat 11/7

8:40 pm-9:40 pm

2 stops30h 00m

$826

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Mon 9/28

11:06 am-10:30 am

1 stop18h 24m

Porto

Sat 10/10

5:55 am-11:59 pm

2 stops23h 04m

$944

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Mon 9/28

7:55 pm-10:00 pm

2 stops21h 05m

Porto

Sat 10/10

5:55 am-11:59 pm

2 stops23h 04m

$948

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Sun 11/1

11:20 am-9:05 am

1 stop16h 45m

Porto

Sat 11/7

11:00 am-6:56 pm

1 stop12h 56m

$1,139

BuffaloPorto

BUF Buffalo - OPO Porto

BUFOPO

Buffalo

Mon 9/28

2:23 pm-10:55 am

1 stop15h 32m

Porto

Sat 10/10

5:40 pm-11:14 am

1 stop22h 34m

$1,196

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Buffalo to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Buffalo to Porto?

KLM, United Airlines, and Air France are the most popular carriers operating from Buffalo to Porto

When to book flights from Buffalo to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Buffalo to Porto (BUF to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Porto

Fastest flight time

9h 45m

Direct flights

None
The fastest flight from Buffalo to Porto takes 9h 45m
There are no direct flights from Buffalo to Porto. There are no popular flight routes from Buffalo to Porto.
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Frequently asked questions about flying from Buffalo to Porto

  • How far is Buffalo to Porto by plane?

    There are 3495.8 mi between Buffalo and Porto. Flights usually cover this in 9h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Buffalo Airport to Porto Airport?

    Prices for flights from Buffalo Airport to Porto Airport are updated daily.

  • How old do you have to be to fly from Buffalo Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Pinhao
Esposende
Chaves
Arcos de Valdevez
Viseu
Guimarães
Espinho
Lamego
Ponte de Lima
Mesao Frio
Penafiel
Caminha
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from Buffalo.

Can I find flights from Buffalo to Porto with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Porto from Buffalo with this policy.

How can momondo help me find flights from Buffalo to Porto?

Once you have performed a search for Buffalo to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Buffalo to Porto right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto from Buffalo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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