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Cheap flights from Buffalo to Porto from $375

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 7/18. 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
6:00 am - 9:45 am
BUF
-
OPO
22h 45m
1 stop
United Airlines Logo
11:20 am - 9:29 am
OPO
-
BUF
51h 09m
2 stops
$829United Airlines
Wed, Sep 23 - Wed, Oct 7
Delta Logo
7:59 pm - 3:25 pm
BUF
-
OPO
14h 26m
2 stops
Delta Logo
5:00 am - 6:54 pm
OPO
-
BUF
18h 54m
2 stops
$835Delta
Wed, Sep 23 - Wed, Oct 7
KLM Logo
7:00 am - 10:25 am
BUF
-
OPO
22h 25m
1 stop
KLM Logo
5:00 am - 3:14 pm
OPO
-
BUF
15h 14m
2 stops
$870KLM
Sun, Aug 9 - Tue, Aug 25
Delta Logo
6:01 am - 10:25 am
BUF
-
OPO
23h 24m
1 stop
Delta Logo
12:25 pm - 12:40 am
OPO
-
BUF
17h 15m
1 stop
$878Delta
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
7:00 am - 9:45 am
BUF
-
OPO
21h 45m
2 stops
United Airlines Logo
12:15 pm - 4:56 pm
OPO
-
BUF
33h 41m
2 stops
$881United Airlines
Sun, Aug 9 - Tue, Aug 25
Delta Logo
10:00 am - 10:25 am
BUF
-
OPO
19h 25m
1 stop
Delta Logo
11:30 am - 12:46 am
OPO
-
BUF
18h 16m
2 stops
$927Delta
Sun, Jul 12 - Tue, Jul 28
Delta Logo
8:11 pm - 10:00 pm
BUF
-
OPO
20h 49m
2 stops
Delta Logo
5:00 am - 7:09 pm
OPO
-
BUF
19h 09m
2 stops
$931Delta
Sun, Jul 12 - Tue, Jul 28
United Airlines Logo
10:34 am - 9:45 am
BUF
-
OPO
18h 11m
1 stop
United Airlines Logo
9:00 am - 10:59 pm
OPO
-
BUF
18h 59m
1 stop
$934United Airlines
Sun, Jul 12 - Tue, Jul 28
United Airlines Logo
6:00 am - 7:00 am
BUF
-
OPO
20h 00m
2 stops
United Airlines Logo
6:00 am - 9:51 am
OPO
-
BUF
32h 51m
2 stops
$937United Airlines
Wed, Jul 29 - Wed, Aug 5
United Airlines Logo
10:34 am - 6:55 am
BUF
-
OPO
15h 21m
1 stop
United Airlines Logo
8:55 am - 10:59 pm
OPO
-
BUF
19h 04m
1 stop
$1,061United Airlines
Wed, Jul 29 - Wed, Aug 5

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United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
Sep 23
BUF6:00 amBuffalo
22h 45m
1 stop
OPO9:45 amPorto
Oct 7
OPO11:20 amPorto
51h 09m
2 stops
BUF9:29 amBuffalo
$829
United Airlines
Aug 9
BUF7:00 amBuffalo
21h 45m
2 stops
OPO9:45 amPorto
Aug 25
OPO12:15 pmPorto
33h 41m
2 stops
BUF4:56 pmBuffalo
$881
United Airlines
Jul 12
BUF10:34 amBuffalo
18h 11m
1 stop
OPO9:45 amPorto
Jul 28
OPO9:00 amPorto
18h 59m
1 stop
BUF10:59 pmBuffalo
$934

Delta flights from Buffalo to Porto

Our best Delta deals on Buffalo to Porto flight tickets
Delta
Sep 23
BUF7:59 pmBuffalo
14h 26m
2 stops
OPO3:25 pmPorto
Oct 7
OPO5:00 amPorto
18h 54m
2 stops
BUF6:54 pmBuffalo
$835
Delta
Aug 9
BUF6:01 amBuffalo
23h 24m
1 stop
OPO10:25 amPorto
Aug 25
OPO12:25 pmPorto
17h 15m
1 stop
BUF12:40 amBuffalo
$878
Delta
Jul 12
BUF10:00 amBuffalo
19h 25m
1 stop
OPO10:25 amPorto
Jul 28
OPO11:30 amPorto
18h 16m
2 stops
BUF12:46 amBuffalo
$927

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 June 19, 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

Wed 9/23

6:00 am-9:45 am

1 stop22h 45m

Porto

Wed 10/7

11:20 am-9:29 am

2 stops51h 09m

$829
Quickest round-trip

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 9/23

7:59 pm-3:25 pm

2 stops14h 26m

Porto

Wed 10/7

5:00 am-6:54 pm

2 stops18h 54m

$835

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/9

7:00 am-10:25 am

1 stop22h 25m

Porto

Tue 8/25

5:00 am-3:14 pm

2 stops15h 14m

$870

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/9

6:01 am-10:25 am

1 stop23h 24m

Porto

Tue 8/25

12:25 pm-12:40 am

1 stop17h 15m

$878

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 8/9

7:00 am-9:45 am

2 stops21h 45m

Porto

Tue 8/25

12:15 pm-4:56 pm

2 stops33h 41m

$881

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 7/12

10:00 am-10:25 am

1 stop19h 25m

Porto

Tue 7/28

11:30 am-12:46 am

2 stops18h 16m

$927

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 7/12

8:11 pm-10:00 pm

2 stops20h 49m

Porto

Tue 7/28

5:00 am-7:09 pm

2 stops19h 09m

$931

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 7/12

10:34 am-9:45 am

1 stop18h 11m

Porto

Tue 7/28

9:00 am-10:59 pm

1 stop18h 59m

$934

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 7/29

6:00 am-7:00 am

2 stops20h 00m

Porto

Wed 8/5

6:00 am-9:51 am

2 stops32h 51m

$937

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Wed 7/29

10:34 am-6:55 am

1 stop15h 21m

Porto

Wed 8/5

8:55 am-10:59 pm

1 stop19h 04m

$1,061

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 14% 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

13h 41m

Direct flights

None
The fastest flight from Buffalo to Porto takes 13h 41m
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 13h 41m, 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
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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