$399 Find Cheap Flights from Buffalo to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Portugal departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Buffalo to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$494
Porto
Porto1 stop$486
Funchal
Funchal2 stops$508
Lisbon
Lisbon2 stops$494
Porto
Porto1 stop$486
Funchal
Funchal2 stops$508

Book Cheap Buffalo to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Portugal

Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:25 pm - 9:30 am
BUF
-
OPO
10h 05m1 stop
United Airlines Logo
6:00 am - 8:51 pm
OPO
-
BUF
19h 51m2 stops
$486United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:25 pm - 9:30 am
BUF
-
OPO
10h 05m1 stop
United Airlines Logo
6:00 am - 5:51 pm
OPO
-
BUF
16h 51m2 stops
$487United Airlines
Thu, Feb 5 - Tue, Feb 17
Multiple Airlines Logo
11:51 am - 10:25 am
BUF
-
OPO
17h 34m2 stops
Multiple Airlines Logo
5:00 am - 10:57 pm
OPO
-
BUF
22h 57m2 stops
$493Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
Air Canada Logo
8:30 am - 7:55 am
BUF
-
LIS
18h 25m2 stops
Air Canada Logo
11:20 am - 8:29 pm
LIS
-
BUF
38h 09m2 stops
$494Air Canada
Thu, Feb 5 - Tue, Feb 17
Multiple Airlines Logo
11:51 am - 10:25 am
BUF
-
OPO
17h 34m2 stops
Multiple Airlines Logo
5:00 am - 5:31 pm
OPO
-
BUF
17h 31m2 stops
$494Multiple Airlines
Tue, Feb 3 - Wed, Feb 11
British Airways Logo
4:01 pm - 5:40 pm
BUF
-
LIS
20h 39m2 stops
British Airways Logo
11:05 am - 10:55 pm
LIS
-
BUF
16h 50m1 stop
$495British Airways
Thu, Feb 5 - Mon, Feb 9
Air Canada Logo
8:30 am - 7:55 am
BUF
-
LIS
18h 25m2 stops
Air Canada Logo
11:20 am - 8:29 pm
LIS
-
BUF
38h 09m2 stops
$496Air Canada
Sun, Apr 12 - Sun, Apr 19
British Airways Logo
2:59 pm - 6:10 pm
BUF
-
FNC
22h 11m2 stops
British Airways Logo
1:10 pm - 9:30 pm
FNC
-
BUF
37h 20m2 stops
$806British Airways
Thu, Feb 5 - Sun, Feb 8
TAP AIR PORTUGAL Logo
10:00 am - 1:00 am
BUF
-
FNC
34h 00m2 stops
TAP AIR PORTUGAL Logo
9:15 pm - 6:47 pm
FNC
-
BUF
26h 32m2 stops
$856TAP AIR PORTUGAL
Thu, Feb 5 - Sun, Feb 8
TAP AIR PORTUGAL Logo
10:00 am - 9:15 am
BUF
-
FNC
18h 15m2 stops
TAP AIR PORTUGAL Logo
6:10 pm - 6:47 pm
FNC
-
BUF
29h 37m2 stops
$857TAP AIR PORTUGAL
Booking Insights

KAYAK's insights & trends for Buffalo to Portugal flights

Get data-powered insights and trends into flights from Buffalo to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Buffalo to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Buffalo to Portugal is February, when tickets cost $604 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,371 and $1,161 respectively.

Good to know

Low seasonJuly
Cheapest flight$399
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Buffalo to Porto

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Buffalo to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Buffalo to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Buffalo to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Buffalo to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Buffalo to Portugal

 
Need help choosing which airline to fly with from Buffalo to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9129 reviews
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
Airline reviews

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

10.0 ExcellentKhahnie, Jan 2026
LAX - HNL
Read more United Airlines reviews

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Aircraft was noisy, old and never dimmed the lights on a night flight even on business class! I flew 17 times on United and probably another 40 on other airlines United USA /Europe flights were the worst to include luggage delayed once going to europe and once coming back

Check how old the airframe is, some older ones have inoperable seat back entertainment or power.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

The value is there, but the layovers in Lisbon were not great. The passport control was so bad that a 2 hour layover became very tight and on the return the Terminal was barebones which made it a long 3 hours.

From Casablanca to Lisbon our baggage 2 pound over they want me to pay $120 for 2 pound which unexpected we are two family 8 of us they counters lady her customer service is not good I fly frequently for my business next time fly with TAP Air I will think twice

Booked business with TAP from LAX to Cabo Verde - overall ok, but just doesn’t feel like business class. More of a budget airline

Poor. Our flight was delayed and they told me I would be fine to make my connection in Lisbon, I missed it. Then they told me my bag would be automatically loaded onto my new flight to rome. It wasn’t. It’s been 4 days and I still don’t have it.

I like the price. I dislike the website where I wanted to ask questions about the unusual high prices of the luggage fees. I called the toll free number from the United States and I cannot get through. You should test your own toll free website for info and you will know what I am writing about.

Wonderful just hope the had more direct flights to Boston

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

Very borderline, low budget airline without low budget prices There are no counts of soda, everything is dispensed enlarged bottles and poured into tiny cups about 70 mL so in order to keep hydrated you have to take 3-4 cups at a time. Also, there was only one food item offered, pasta, they ran out of chicken right away. Snack was very poor. It was called tuna sandwich, which is truly borderline. The flight attend attendance seemed to be overworked and tired.

TAP‘s flight attendants seem to be among the least ambitious of all the international flight crews we’ve flown with. . When we left US and went to Portugal, and when we returned from Portugal, flight attendants were not very visible. Then did not offer frequent water breaks and when we had to go back to request water, I was almost an imposition. Meal quality was just average. The dinners were fine. Breakfast wraps were presented soggy.

Did not enjoy the meal provided. The aircraft was dirty. For instance, the screen seemed to have been cleaned with a dirty rag. Disgusting.

Everything you need to know for your flight from Buffalo to Portugal

Information on your arrival and departure airports