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Cheap flights from Buffalo to Porto from $454

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 10/1. 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
10:41 am - 9:30 am
BUF
-
OPO
17h 49m
1 stop
United Airlines Logo
6:00 am - 11:21 pm
OPO
-
BUF
22h 21m
2 stops
$717United Airlines
Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
10:30 am - 9:30 am
BUF
-
OPO
18h 00m
2 stops
United Airlines Logo
12:35 pm - 9:29 am
OPO
-
BUF
25h 54m
2 stops
$721United Airlines
Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
10:41 am - 9:30 am
BUF
-
OPO
17h 49m
1 stop
United Airlines Logo
12:35 pm - 11:21 pm
OPO
-
BUF
15h 46m
1 stop
$726United Airlines
Sun, Nov 15 - Wed, Nov 18
Multiple Airlines Logo
6:04 pm - 7:00 am
BUF
-
OPO
31h 56m
2 stops
Multiple Airlines Logo
6:00 am - 7:00 pm
OPO
-
BUF
18h 00m
2 stops
$857Multiple Airlines
Mon, Aug 10 - Tue, Aug 25
KLM Logo
10:00 am - 10:30 am
BUF
-
OPO
19h 30m
1 stop
KLM Logo
5:00 am - 6:55 pm
OPO
-
BUF
18h 55m
2 stops
$858KLM
Mon, Aug 10 - Tue, Aug 25
Multiple Airlines Logo
7:59 pm - 3:25 pm
BUF
-
OPO
14h 26m
2 stops
Multiple Airlines Logo
5:00 am - 6:55 pm
OPO
-
BUF
18h 55m
2 stops
$864Multiple Airlines
Mon, Aug 10 - Tue, Aug 25
KLM Logo
10:00 am - 10:30 am
BUF
-
OPO
19h 30m
1 stop
KLM Logo
5:00 am - 6:55 pm
OPO
-
BUF
18h 55m
2 stops
$870KLM
Mon, Aug 10 - Tue, Aug 25
Delta Logo
3:53 pm - 10:30 am
BUF
-
OPO
13h 37m
1 stop
Delta Logo
5:00 am - 6:55 pm
OPO
-
BUF
18h 55m
2 stops
$876Delta
Mon, Aug 10 - Tue, Aug 25
Delta Logo
3:53 pm - 10:30 am
BUF
-
OPO
13h 37m
1 stop
Delta Logo
12:25 pm - 11:29 pm
OPO
-
BUF
16h 04m
1 stop
$877Delta
Mon, Aug 10 - Tue, Aug 25
Delta Logo
2:27 pm - 10:30 am
BUF
-
OPO
15h 03m
1 stop
Delta Logo
12:25 pm - 7:19 pm
OPO
-
BUF
11h 54m
1 stop
$878Delta
Mon, Aug 10 - Tue, Aug 25

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KLM flights from Buffalo to Porto

Our best KLM deals on Buffalo to Porto flight tickets
KLM
Aug 10
BUF10:00 amBuffalo
19h 30m
1 stop
OPO10:30 amPorto
Aug 25
OPO5:00 amPorto
18h 55m
2 stops
BUF6:55 pmBuffalo
$858
KLM
Aug 10
BUF10:00 amBuffalo
19h 30m
1 stop
OPO10:30 amPorto
Aug 25
OPO5:00 amPorto
18h 55m
2 stops
BUF6:55 pmBuffalo
$870
KLM
Sep 2
BUF10:00 amBuffalo
19h 30m
1 stop
OPO10:30 amPorto
Sep 13
OPO12:25 pmPorto
11h 50m
1 stop
BUF7:15 pmBuffalo
$3,904

Delta flights from Buffalo to Porto

Our best Delta deals on Buffalo to Porto flight tickets
Delta
Aug 10
BUF3:53 pmBuffalo
13h 37m
1 stop
OPO10:30 amPorto
Aug 25
OPO5:00 amPorto
18h 55m
2 stops
BUF6:55 pmBuffalo
$876
Delta
Aug 10
BUF3:53 pmBuffalo
13h 37m
1 stop
OPO10:30 amPorto
Aug 25
OPO12:25 pmPorto
16h 04m
1 stop
BUF11:29 pmBuffalo
$877
Delta
Aug 10
BUF2:27 pmBuffalo
15h 03m
1 stop
OPO10:30 amPorto
Aug 25
OPO12:25 pmPorto
11h 54m
1 stop
BUF7:19 pmBuffalo
$878

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 July 6, 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 11/15

10:41 am-9:30 am

1 stop17h 49m

Porto

Wed 11/18

6:00 am-11:21 pm

2 stops22h 21m

$717

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 11/15

10:30 am-9:30 am

2 stops18h 00m

Porto

Wed 11/18

12:35 pm-9:29 am

2 stops25h 54m

$721

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 11/15

10:41 am-9:30 am

1 stop17h 49m

Porto

Wed 11/18

12:35 pm-11:21 pm

1 stop15h 46m

$726

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

6:04 pm-7:00 am

2 stops31h 56m

Porto

Tue 8/25

6:00 am-7:00 pm

2 stops18h 00m

$857

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

10:00 am-10:30 am

1 stop19h 30m

Porto

Tue 8/25

5:00 am-6:55 pm

2 stops18h 55m

$858

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

7:59 pm-3:25 pm

2 stops14h 26m

Porto

Tue 8/25

5:00 am-6:55 pm

2 stops18h 55m

$864

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

10:00 am-10:30 am

1 stop19h 30m

Porto

Tue 8/25

5:00 am-6:55 pm

2 stops18h 55m

$870

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

3:53 pm-10:30 am

1 stop13h 37m

Porto

Tue 8/25

5:00 am-6:55 pm

2 stops18h 55m

$876

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

3:53 pm-10:30 am

1 stop13h 37m

Porto

Tue 8/25

12:25 pm-11:29 pm

1 stop16h 04m

$877
Quickest round-trip

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/10

2:27 pm-10:30 am

1 stop15h 03m

Porto

Tue 8/25

12:25 pm-7:19 pm

1 stop11h 54m

$878

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 7% 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

17h 49m

Direct flights

None
The fastest flight from Buffalo to Porto takes 17h 49m
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 17h 49m, 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
Esposende
Lamego
Chaves
Pinhao
Arcos de Valdevez
Guimarães
Espinho
Ponte de Lima
Viseu
Curia
Mesao Frio
Penafiel
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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