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Cheap flights from Buffalo to Porto from $420

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 5/29. 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

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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
10:32 am - 2:55 pm
BUF
-
OPO
24h 23m
2 stops
United Airlines Logo
12:35 pm - 11:42 pm
OPO
-
BUF
15h 07m
2 stops
$521United Airlines
Mon, Mar 16 - Thu, Mar 26
United Airlines Logo
1:52 pm - 9:30 am
BUF
-
OPO
15h 38m
2 stops
United Airlines Logo
6:00 am - 5:10 pm
OPO
-
BUF
40h 10m
2 stops
$534United Airlines
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
1:52 pm - 11:15 am
BUF
-
OPO
17h 23m
2 stops
Multiple Airlines Logo
12:35 pm - 11:56 pm
OPO
-
BUF
15h 21m
1 stop
$556Multiple Airlines
Mon, Mar 16 - Thu, Mar 26
Delta Logo
3:56 pm - 3:25 pm
BUF
-
OPO
19h 29m
2 stops
Delta Logo
5:00 am - 10:55 pm
OPO
-
BUF
22h 55m
2 stops
$611Delta
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
5:54 pm - 9:30 am
BUF
-
OPO
11h 36m
1 stop
United Airlines Logo
6:00 am - 6:49 pm
OPO
-
BUF
17h 49m
2 stops
$684United Airlines
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
7:00 am - 12:05 pm
BUF
-
OPO
25h 05m
2 stops
Multiple Airlines Logo
12:35 pm - 11:33 pm
OPO
-
BUF
15h 58m
1 stop
$716Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Air Canada Logo
5:47 pm - 7:00 am
BUF
-
OPO
32h 13m
2 stops
Air Canada Logo
12:15 pm - 4:40 pm
OPO
-
BUF
33h 25m
2 stops
$752Air Canada
Mon, Jul 20 - Tue, Jul 28
United Airlines Logo
7:03 pm - 9:45 am
BUF
-
OPO
9h 42m
1 stop
United Airlines Logo
12:15 pm - 10:00 am
OPO
-
BUF
26h 45m
2 stops
$758United Airlines
Mon, Jul 20 - Tue, Jul 28
United Airlines Logo
10:57 am - 6:55 am
BUF
-
OPO
14h 58m
2 stops
United Airlines Logo
12:35 pm - 11:52 pm
OPO
-
BUF
16h 17m
2 stops
$759United Airlines
Mon, Jul 20 - Tue, Jul 28
Multiple Airlines Logo
7:30 pm - 9:55 am
BUF
-
OPO
33h 25m
2 stops
Multiple Airlines Logo
4:10 pm - 12:34 pm
OPO
-
BUF
48h 24m
2 stops
$778Multiple Airlines
Thu, Mar 5 - Thu, Mar 12

United Airlines flights from Buffalo to Porto

Our best United Airlines deals on Buffalo to Porto flight tickets
United Airlines
Mar 16
BUF10:32 amBuffalo
24h 23m
2 stops
OPO2:55 pmPorto
Mar 26
OPO12:35 pmPorto
15h 07m
2 stops
BUF11:42 pmBuffalo
$521
United Airlines
Mar 24
BUF1:52 pmBuffalo
15h 38m
2 stops
OPO9:30 amPorto
Mar 31
OPO6:00 amPorto
40h 10m
2 stops
BUF5:10 pmBuffalo
$534
United Airlines
Mar 24
BUF5:54 pmBuffalo
11h 36m
1 stop
OPO9:30 amPorto
Mar 31
OPO6:00 amPorto
17h 49m
2 stops
BUF6:49 pmBuffalo
$684

Air Canada flights from Buffalo to Porto

Our best Air Canada deals on Buffalo to Porto flight tickets
Air Canada
Jul 20
BUF5:47 pmBuffalo
32h 13m
2 stops
OPO7:00 amPorto
Jul 28
OPO12:15 pmPorto
33h 25m
2 stops
BUF4:40 pmBuffalo
$752
Air Canada
Jul 13
BUF5:47 pmBuffalo
56h 13m
2 stops
OPO7:00 amPorto
Jul 22
OPO2:25 pmPorto
35h 37m
2 stops
BUF9:02 pmBuffalo
$887
Air Canada
Jul 20
BUF7:00 amBuffalo
19h 00m
3 stops
OPO7:00 amPorto
Jul 28
OPO12:15 pmPorto
26h 45m
3 stops
BUF10:00 amBuffalo
$1,562

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 February 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

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 3/16

10:32 am-2:55 pm

2 stops24h 23m

Porto

Thu 3/26

12:35 pm-11:42 pm

2 stops15h 07m

$521

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 3/24

1:52 pm-9:30 am

2 stops15h 38m

Porto

Tue 3/31

6:00 am-5:10 pm

2 stops40h 10m

$534

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 3/16

1:52 pm-11:15 am

2 stops17h 23m

Porto

Thu 3/26

12:35 pm-11:56 pm

1 stop15h 21m

$556

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 3/24

3:56 pm-3:25 pm

2 stops19h 29m

Porto

Tue 3/31

5:00 am-10:55 pm

2 stops22h 55m

$611

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 3/24

5:54 pm-9:30 am

1 stop11h 36m

Porto

Tue 3/31

6:00 am-6:49 pm

2 stops17h 49m

$684

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Tue 3/24

7:00 am-12:05 pm

2 stops25h 05m

Porto

Tue 3/31

12:35 pm-11:33 pm

1 stop15h 58m

$716

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 7/20

5:47 pm-7:00 am

2 stops32h 13m

Porto

Tue 7/28

12:15 pm-4:40 pm

2 stops33h 25m

$752

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 7/20

7:03 pm-9:45 am

1 stop9h 42m

Porto

Tue 7/28

12:15 pm-10:00 am

2 stops26h 45m

$758

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Mon 7/20

10:57 am-6:55 am

2 stops14h 58m

Porto

Tue 7/28

12:35 pm-11:52 pm

2 stops16h 17m

$759

BuffaloPorto

BUF - OPO

BUFOPO

Buffalo

Thu 3/5

7:30 pm-9:55 am

2 stops33h 25m

Porto

Thu 3/12

4:10 pm-12:34 pm

2 stops48h 24m

$778

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 42m

Direct flights

None
The fastest flight from Buffalo to Porto takes 9h 42m
There are no direct flights from Buffalo to Porto. There are no popular flight routes from Buffalo to Porto.
Search flight deals

  • How far is Buffalo to Porto by plane?

    There are 3495.8 mi between Buffalo and Porto. Flights usually cover this in 9h 42m, 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
Matosinhos
Braga
Aveiro
Esposende
Lamego
Guimarães
Pinhao
Chaves
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
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.

An easier way to manage your Porto trip

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