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Cheap flights from Buffalo to Porto from $390

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 8/16. 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
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
7:04 pm - 6:55 am
BUF
-
OPO
30h 51m
1 stop
United Airlines Logo
12:15 pm - 9:14 am
OPO
-
BUF
49h 59m
2 stops
$890United Airlines
Sun, Aug 16 - Sun, Aug 23
Multiple Airlines Logo
3:50 pm - 10:25 am
BUF
-
OPO
13h 35m
1 stop
Multiple Airlines Logo
5:00 am - 3:11 pm
OPO
-
BUF
15h 11m
2 stops
$891Multiple Airlines
Sun, Aug 16 - Mon, Aug 24
Air France Logo
3:50 pm - 10:25 am
BUF
-
OPO
13h 35m
1 stop
Air France Logo
12:55 pm - 11:56 pm
OPO
-
BUF
16h 01m
1 stop
$899Air France
Sun, Aug 16 - Sat, Aug 22
United Airlines Logo
10:42 am - 9:45 am
BUF
-
OPO
18h 03m
1 stop
United Airlines Logo
11:20 am - 11:18 pm
OPO
-
BUF
16h 58m
2 stops
$902United Airlines
Sun, Aug 16 - Sat, Aug 22
United Airlines Logo
7:04 pm - 9:45 am
BUF
-
OPO
9h 41m
1 stop
United Airlines Logo
9:00 am - 10:01 am
OPO
-
BUF
30h 01m
1 stop
$905United Airlines
Sun, Aug 16 - Mon, Aug 24
United Airlines Logo
3:08 pm - 9:45 am
BUF
-
OPO
13h 37m
2 stops
United Airlines Logo
11:20 am - 11:18 pm
OPO
-
BUF
16h 58m
2 stops
$907United Airlines
Sun, Aug 16 - Sat, Aug 22
United Airlines Logo
3:08 pm - 9:45 am
BUF
-
OPO
13h 37m
2 stops
United Airlines Logo
12:15 pm - 9:14 am
OPO
-
BUF
49h 59m
2 stops
$913United Airlines
Sun, Aug 16 - Sun, Aug 23
United Airlines Logo
7:00 pm - 9:45 am
BUF
-
OPO
9h 45m
1 stop
United Airlines Logo
9:00 am - 11:18 pm
OPO
-
BUF
19h 18m
1 stop
$948United Airlines
Wed, Aug 5 - Fri, Aug 14
Multiple Airlines Logo
7:15 pm - 3:30 pm
BUF
-
OPO
15h 15m
2 stops
Multiple Airlines Logo
5:00 am - 3:11 pm
OPO
-
BUF
15h 11m
2 stops
$969Multiple Airlines
Sun, Aug 16 - Mon, Aug 24
United Airlines Logo
10:34 am - 7:00 am
BUF
-
OPO
15h 26m
2 stops
United Airlines Logo
9:00 am - 6:17 pm
OPO
-
BUF
14h 17m
1 stop
$971United Airlines
Wed, Aug 5 - Fri, Aug 14

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United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
Aug 16
BUF7:04 pmBuffalo
30h 51m
1 stop
OPO6:55 amPorto
Aug 23
OPO12:15 pmPorto
49h 59m
2 stops
BUF9:14 amBuffalo
$890
United Airlines
Aug 16
BUF10:42 amBuffalo
18h 03m
1 stop
OPO9:45 amPorto
Aug 22
OPO11:20 amPorto
16h 58m
2 stops
BUF11:18 pmBuffalo
$902
United Airlines
Aug 16
BUF7:04 pmBuffalo
9h 41m
1 stop
OPO9:45 amPorto
Aug 24
OPO9:00 amPorto
30h 01m
1 stop
BUF10:01 amBuffalo
$905

Delta flights from Buffalo to Porto

Our best Delta deals on Buffalo to Porto flight tickets
Delta
Aug 16
BUF7:15 pmBuffalo
10h 10m
1 stop
OPO10:25 amPorto
Aug 23
OPO12:25 pmPorto
15h 35m
1 stop
BUF11:00 pmBuffalo
$1,207
Delta
Jun 14
BUF10:00 amBuffalo
19h 25m
1 stop
OPO10:25 amPorto
Jun 21
OPO5:00 amPorto
19h 24m
2 stops
BUF7:24 pmBuffalo
$1,225

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 May 1, 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 - OPO

BUFOPO

Buffalo

Sun 8/16

7:04 pm-6:55 am

1 stop30h 51m

Porto

Sun 8/23

12:15 pm-9:14 am

2 stops49h 59m

$890
Quickest round-trip

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

3:50 pm-10:25 am

1 stop13h 35m

Porto

Mon 8/24

5:00 am-3:11 pm

2 stops15h 11m

$891

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

3:50 pm-10:25 am

1 stop13h 35m

Porto

Sat 8/22

12:55 pm-11:56 pm

1 stop16h 01m

$899

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

10:42 am-9:45 am

1 stop18h 03m

Porto

Sat 8/22

11:20 am-11:18 pm

2 stops16h 58m

$902

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

7:04 pm-9:45 am

1 stop9h 41m

Porto

Mon 8/24

9:00 am-10:01 am

1 stop30h 01m

$905

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

3:08 pm-9:45 am

2 stops13h 37m

Porto

Sat 8/22

11:20 am-11:18 pm

2 stops16h 58m

$907

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

3:08 pm-9:45 am

2 stops13h 37m

Porto

Sun 8/23

12:15 pm-9:14 am

2 stops49h 59m

$913

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 8/5

7:00 pm-9:45 am

1 stop9h 45m

Porto

Fri 8/14

9:00 am-11:18 pm

1 stop19h 18m

$948

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/16

7:15 pm-3:30 pm

2 stops15h 15m

Porto

Mon 8/24

5:00 am-3:11 pm

2 stops15h 11m

$969

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 8/5

10:34 am-7:00 am

2 stops15h 26m

Porto

Fri 8/14

9:00 am-6:17 pm

1 stop14h 17m

$971

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

Can stopping save me money on Buffalo to Porto flights?

You could potentially save up to 12% on your flight if you consider stops on a Buffalo to Porto flight.

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
Lamego
Esposende
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
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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