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Cheap flights from Buffalo to Porto from $450

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
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
10:34 am - 9:45 am
BUF
-
OPO
18h 11m
1 stop
United Airlines Logo
12:15 pm - 11:59 pm
OPO
-
BUF
40h 44m
2 stops
$1,143United Airlines
Mon, Jun 1 - Tue, Jun 30
United Airlines Logo
10:34 am - 9:45 am
BUF
-
OPO
18h 11m
2 stops
United Airlines Logo
12:15 pm - 9:03 pm
OPO
-
BUF
37h 48m
2 stops
$1,147United Airlines
Mon, Jun 1 - Tue, Jun 30
KLM Logo
10:32 am - 10:30 am
BUF
-
OPO
18h 58m
1 stop
KLM Logo
12:25 pm - 12:38 am
OPO
-
BUF
17h 13m
1 stop
$1,163KLM
Mon, Jun 1 - Tue, Jun 30
United Airlines Logo
10:31 am - 9:45 am
BUF
-
OPO
18h 14m
1 stop
United Airlines Logo
9:00 am - 6:05 pm
OPO
-
BUF
14h 05m
1 stop
$1,177United Airlines
Sun, May 17 - Sun, May 24
Multiple Airlines Logo
10:29 am - 2:45 pm
BUF
-
OPO
23h 16m
2 stops
Multiple Airlines Logo
12:35 pm - 1:42 pm
OPO
-
BUF
30h 07m
2 stops
$1,211Multiple Airlines
Mon, May 18 - Mon, Jun 1
TAP AIR PORTUGAL Logo
10:29 am - 10:55 am
BUF
-
OPO
19h 26m
1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 11:59 pm
OPO
-
BUF
30h 29m
2 stops
$1,230TAP AIR PORTUGAL
Mon, May 18 - Mon, Jun 1
United Airlines Logo
10:45 am - 9:45 am
BUF
-
OPO
18h 00m
1 stop
United Airlines Logo
9:00 am - 6:05 pm
OPO
-
BUF
14h 05m
1 stop
$1,237United Airlines
Sat, May 16 - Sun, May 24
United Airlines Logo
10:45 am - 9:45 am
BUF
-
OPO
18h 00m
1 stop
United Airlines Logo
12:35 pm - 9:53 am
OPO
-
BUF
26h 18m
1 stop
$1,243United Airlines
Sat, May 16 - Sat, May 23
Multiple Airlines Logo
7:50 pm - 11:25 pm
BUF
-
OPO
22h 35m
2 stops
Multiple Airlines Logo
7:20 pm - 9:03 pm
OPO
-
BUF
30h 43m
2 stops
$1,269Multiple Airlines
Tue, May 19 - Mon, Jun 1
Delta Logo
7:39 pm - 10:15 pm
BUF
-
OPO
21h 36m
2 stops
Delta Logo
12:15 pm - 12:19 am
OPO
-
BUF
17h 04m
1 stop
$1,292Delta
Tue, May 19 - Mon, Jun 1

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United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
May 11
BUF10:31 amBuffalo
18h 14m
1 stop
OPO9:45 amPorto
May 21
OPO6:00 amPorto
17h 05m
2 stops
BUF6:05 pmBuffalo
$977
United Airlines
May 11
BUF7:02 pmBuffalo
9h 43m
1 stop
OPO9:45 amPorto
May 22
OPO12:35 pmPorto
14h 56m
1 stop
BUF10:31 pmBuffalo
$985
United Airlines
May 11
BUF7:02 pmBuffalo
9h 43m
1 stop
OPO9:45 amPorto
May 24
OPO6:00 amPorto
17h 05m
2 stops
BUF6:05 pmBuffalo
$1,037

TAP AIR PORTUGAL flights from Buffalo to Porto

Our best TAP AIR PORTUGAL deals on Buffalo to Porto flight tickets
TAP AIR PORTUGAL
May 18
BUF10:29 amBuffalo
19h 26m
1 stop
OPO10:55 amPorto
Jun 1
OPO10:30 pmPorto
30h 29m
2 stops
BUF11:59 pmBuffalo
$1,230
TAP AIR PORTUGAL
May 16
BUF2:28 pmBuffalo
15h 27m
1 stop
OPO10:55 amPorto
May 20
OPO10:00 amPorto
27h 58m
2 stops
BUF8:58 amBuffalo
$1,421
TAP AIR PORTUGAL
May 16
BUF2:28 pmBuffalo
15h 27m
1 stop
OPO10:55 amPorto
May 23
OPO11:00 amPorto
26h 58m
2 stops
BUF8:58 amBuffalo
$1,441

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 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

Mon 6/1

10:34 am-9:45 am

1 stop18h 11m

Porto

Tue 6/30

12:15 pm-11:59 pm

2 stops40h 44m

$1,143

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 6/1

10:34 am-9:45 am

2 stops18h 11m

Porto

Tue 6/30

12:15 pm-9:03 pm

2 stops37h 48m

$1,147

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 6/1

10:32 am-10:30 am

1 stop18h 58m

Porto

Tue 6/30

12:25 pm-12:38 am

1 stop17h 13m

$1,163

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sun 5/17

10:31 am-9:45 am

1 stop18h 14m

Porto

Sun 5/24

9:00 am-6:05 pm

1 stop14h 05m

$1,177

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 5/18

10:29 am-2:45 pm

2 stops23h 16m

Porto

Mon 6/1

12:35 pm-1:42 pm

2 stops30h 07m

$1,211

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 5/18

10:29 am-10:55 am

1 stop19h 26m

Porto

Mon 6/1

10:30 pm-11:59 pm

2 stops30h 29m

$1,230
Quickest round-trip

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sat 5/16

10:45 am-9:45 am

1 stop18h 00m

Porto

Sun 5/24

9:00 am-6:05 pm

1 stop14h 05m

$1,237

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Sat 5/16

10:45 am-9:45 am

1 stop18h 00m

Porto

Sat 5/23

12:35 pm-9:53 am

1 stop26h 18m

$1,243

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 5/19

7:50 pm-11:25 pm

2 stops22h 35m

Porto

Mon 6/1

7:20 pm-9:03 pm

2 stops30h 43m

$1,269

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 5/19

7:39 pm-10:15 pm

2 stops21h 36m

Porto

Mon 6/1

12:15 pm-12:19 am

1 stop17h 04m

$1,292

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

15h 12m

Direct flights

None
The fastest flight from Buffalo to Porto takes 15h 12m
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 15h 12m, 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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