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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.
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0 bags

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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 - 6:55 am
BUF
-
OPO
15h 21m
1 stop
United Airlines Logo
12:15 pm - 4:56 pm
OPO
-
BUF
33h 41m
2 stops
$914United Airlines
Mon, Aug 3 - Tue, Aug 11
United Airlines Logo
10:57 am - 6:55 am
BUF
-
OPO
14h 58m
2 stops
United Airlines Logo
12:15 pm - 4:56 pm
OPO
-
BUF
33h 41m
2 stops
$919United Airlines
Mon, Aug 3 - Tue, Aug 11
United Airlines Logo
7:03 pm - 9:45 am
BUF
-
OPO
9h 42m
1 stop
United Airlines Logo
12:15 pm - 9:07 pm
OPO
-
BUF
37h 52m
2 stops
$974United Airlines
Thu, Aug 6 - Tue, Aug 18
United Airlines Logo
6:00 am - 6:15 am
BUF
-
OPO
19h 15m
1 stop
United Airlines Logo
12:20 pm - 9:49 am
OPO
-
BUF
26h 29m
2 stops
$975United Airlines
Tue, Sep 15 - Sat, Sep 26
United Airlines Logo
6:00 am - 7:00 am
BUF
-
OPO
20h 00m
2 stops
United Airlines Logo
12:20 pm - 9:49 am
OPO
-
BUF
26h 29m
2 stops
$978United Airlines
Tue, Sep 15 - Sat, Sep 26
United Airlines Logo
6:15 am - 6:55 am
BUF
-
OPO
19h 40m
2 stops
United Airlines Logo
12:15 pm - 9:07 pm
OPO
-
BUF
37h 52m
2 stops
$979United Airlines
Thu, Aug 6 - Tue, Aug 18
United Airlines Logo
7:00 pm - 9:45 am
BUF
-
OPO
9h 45m
1 stop
United Airlines Logo
6:00 am - 6:05 pm
OPO
-
BUF
17h 05m
2 stops
$989United Airlines
Fri, Jul 10 - Fri, Jul 17
Multiple Airlines Logo
10:57 am - 7:00 am
BUF
-
OPO
15h 03m
2 stops
Multiple Airlines Logo
11:05 am - 11:59 pm
OPO
-
BUF
17h 54m
2 stops
$991Multiple Airlines
Fri, Jul 10 - Fri, Jul 17
KLM Logo
10:00 am - 10:30 am
BUF
-
OPO
19h 30m
1 stop
KLM Logo
12:25 pm - 12:40 am
OPO
-
BUF
17h 15m
1 stop
$1,024KLM
Mon, Aug 3 - Tue, Aug 11
United Airlines Logo
7:00 pm - 6:55 am
BUF
-
OPO
30h 55m
1 stop
United Airlines Logo
11:20 am - 10:00 am
OPO
-
BUF
51h 40m
2 stops
$1,057United Airlines
Fri, Jul 24 - Sat, Aug 1

United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
Aug 3
BUF10:34 amBuffalo
15h 21m
1 stop
OPO6:55 amPorto
Aug 11
OPO12:15 pmPorto
33h 41m
2 stops
BUF4:56 pmBuffalo
$914
United Airlines
Aug 3
BUF10:57 amBuffalo
14h 58m
2 stops
OPO6:55 amPorto
Aug 11
OPO12:15 pmPorto
33h 41m
2 stops
BUF4:56 pmBuffalo
$919
United Airlines
Aug 6
BUF7:03 pmBuffalo
9h 42m
1 stop
OPO9:45 amPorto
Aug 18
OPO12:15 pmPorto
37h 52m
2 stops
BUF9:07 pmBuffalo
$974

KLM flights from Buffalo to Porto

Our best KLM deals on Buffalo to Porto flight tickets
KLM
Aug 3
BUF10:00 amBuffalo
19h 30m
1 stop
OPO10:30 amPorto
Aug 11
OPO12:25 pmPorto
17h 15m
1 stop
BUF12:40 amBuffalo
$1,024
KLM
Jun 21
BUF10:00 amBuffalo
19h 25m
1 stop
OPO10:25 amPorto
Jul 1
OPO11:45 amPorto
17h 53m
2 stops
BUF12:38 amBuffalo
$1,155
KLM
Jun 22
BUF7:57 pmBuffalo
14h 33m
2 stops
OPO3:30 pmPorto
Jul 1
OPO5:00 amPorto
15h 21m
2 stops
BUF3:21 pmBuffalo
$1,164

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 27, 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 8/3

10:34 am-6:55 am

1 stop15h 21m

Porto

Tue 8/11

12:15 pm-4:56 pm

2 stops33h 41m

$914

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/3

10:57 am-6:55 am

2 stops14h 58m

Porto

Tue 8/11

12:15 pm-4:56 pm

2 stops33h 41m

$919

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Thu 8/6

7:03 pm-9:45 am

1 stop9h 42m

Porto

Tue 8/18

12:15 pm-9:07 pm

2 stops37h 52m

$974

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 9/15

6:00 am-6:15 am

1 stop19h 15m

Porto

Sat 9/26

12:20 pm-9:49 am

2 stops26h 29m

$975

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 9/15

6:00 am-7:00 am

2 stops20h 00m

Porto

Sat 9/26

12:20 pm-9:49 am

2 stops26h 29m

$978

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Thu 8/6

6:15 am-6:55 am

2 stops19h 40m

Porto

Tue 8/18

12:15 pm-9:07 pm

2 stops37h 52m

$979
Quickest round-trip

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 7/10

7:00 pm-9:45 am

1 stop9h 45m

Porto

Fri 7/17

6:00 am-6:05 pm

2 stops17h 05m

$989

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 7/10

10:57 am-7:00 am

2 stops15h 03m

Porto

Fri 7/17

11:05 am-11:59 pm

2 stops17h 54m

$991

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 8/3

10:00 am-10:30 am

1 stop19h 30m

Porto

Tue 8/11

12:25 pm-12:40 am

1 stop17h 15m

$1,024

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Fri 7/24

7:00 pm-6:55 am

1 stop30h 55m

Porto

Sat 8/1

11:20 am-10:00 am

2 stops51h 40m

$1,057

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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
Aveiro
Braga
Matosinhos
Lamego
Chaves
Esposende
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
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.

An easier way to manage your Porto trip

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