$399 Find Cheap Flights from Buffalo to Portugal - Compare and Save

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 8/6. 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$875
Porto
Porto1 stop$717
Funchal
Funchal2 stops$1,018
Lisbon
Lisbon2 stops$875
Porto
Porto1 stop$717
Funchal
Funchal2 stops$1,018

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

Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
10:41 am - 9:30 am
BUF
-
OPO
17h 49m
1 stop
United Airlines Logo
6:00 am - 11:29 pm
OPO
-
BUF
22h 29m
2 stops
$717United Airlines
Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
1:48 pm - 9:30 am
BUF
-
OPO
14h 42m
2 stops
United Airlines Logo
6:00 am - 11:21 pm
OPO
-
BUF
22h 21m
2 stops
$722United Airlines
Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
10:41 am - 9:30 am
BUF
-
OPO
17h 49m
1 stop
United Airlines Logo
12:35 pm - 11:21 pm
OPO
-
BUF
15h 46m
1 stop
$726United Airlines
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
10:41 am - 9:30 am
BUF
-
OPO
17h 49m
1 stop
United Airlines Logo
12:35 pm - 9:29 am
OPO
-
BUF
25h 54m
2 stops
$767United Airlines
Sat, Nov 7 - Sat, Nov 14
United Airlines Logo
8:45 pm - 9:30 am
BUF
-
OPO
31h 45m
1 stop
United Airlines Logo
6:00 am - 9:29 am
OPO
-
BUF
32h 29m
2 stops
$772United Airlines
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
4:00 pm - 9:30 am
BUF
-
OPO
12h 30m
1 stop
United Airlines Logo
12:35 pm - 8:05 pm
OPO
-
BUF
12h 30m
1 stop
$776United Airlines
Mon, Aug 10 - Wed, Aug 26
Delta Logo
2:27 pm - 10:45 am
BUF
-
LIS
15h 18m
2 stops
Delta Logo
5:00 am - 5:30 pm
LIS
-
BUF
17h 30m
2 stops
$875Delta
Sun, Sep 20 - Sun, Sep 27
Iberia Logo
6:56 pm - 11:25 pm
BUF
-
LIS
23h 29m
2 stops
Iberia Logo
8:45 pm - 10:10 pm
LIS
-
BUF
30h 25m
2 stops
$921Iberia
Wed, Sep 2 - Mon, Sep 14
KLM Logo
10:00 am - 10:55 am
BUF
-
LIS
19h 55m
2 stops
KLM Logo
7:45 pm - 5:54 pm
LIS
-
BUF
27h 09m
2 stops
$933KLM
Mon, Oct 19 - Fri, Oct 23
TAP AIR PORTUGAL Logo
3:10 pm - 9:05 pm
BUF
-
FNC
24h 55m
2 stops
TAP AIR PORTUGAL Logo
2:15 pm - 8:24 pm
FNC
-
BUF
35h 09m
2 stops
$1,389TAP 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 June, when tickets cost $0 (return) on average. On the other hand, the most expensive months are September and July, when the average cost of round-trip tickets is $1,044 and $994 respectively.

Good to know

Low seasonFebruary
Cheapest flight$399
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 6% lower on average.
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 9878 reviews
6.6Food
7.1Entertainment
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

10.0 ExcellentNerissa, Jun 2026
ORD - ANC
Read more United Airlines reviews

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

We used Kayak to reserve our tickets and specifically checked the luggage option which was a more expensive option. When we arrived at the terminal we had to pay an extra $90 per suitcase for the three passengers. This has been a pattern for the past 3 years. Why charge for a more expensive luggage option, and the ticket price not include luggage?

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

There were no delays. I almost lost my connection because of the new EES system

It was a game of hurry up and wait. As advised we arrived at the terminal e hours prior to boarding. We waited about 45 minutes before anyone showed up at the check-in terminal. When someone does arrive she rearranges the line and we think we are going to be checked in. Nope. She leaves and we wait another 15 min. before anyone else shows up. One person got behind her computer and about 15 min later started to check the first person in . Then one more person arrives spends 10-15 behind the desk and then she starts checking in someone. Two more staff arrive and another 10 min or so they are ready to begin checking in people. We have a 11:50 international flight and it is 9:45. And then on of the agents, closes her desk and leaves. And every leg of our flight was delayed; we waited at terminals, we waited to take off, we waited to deplane. After arriving in Porto within 10min of our connection schwduled to take off, we were told to go to the last bus. We waited on the bus (until all the other busses had left) and then we waited another 10 min or so for one of the ground controllers who wanted a ride with us but was busy with a woman who needed the handicap van. He did not help her to the van, but was standing with her and talking with hher. We were rushed through border control and told not to wait for the rest of our party only to get on the plane and then have to wait another 45 min before we were cleared for take off. The waits were not 10 or 20 minutes, they were 35-55 minute waits each time. Miraculously, we made it back only 2 1/2 hours later than we we were originally scheduled. Given the nonchalance and seaming disinterest from many of the staff, I was expecting that we would not get on until much later than that.

The crew was excellent. What I did not enjoy was the food. I have taken many international flights and this was on the low end. Otherwise the trip was fine.

Seats were the most uncomfortable seats i ever experienced on a flight to Europe from Boston. It was a waist of money in buying premium seats for top dollars. I want my money back for what i paid extra for my seats. Awful conditions!

On the seat map for this flight with TAP was shown a business class configuration of 2 rows/8 seats. To my surprise, 4 rows/24 seats being the middle is kept empty, old European type. I chose seat 2F, the the leg room economy dimension. This is not what I paid for. Disappointed!

Boarding felt a little chaotic as everyone was waiting around the gate. Food was great, service was good.

The passport control process in Lisbon ranks as a 1 on a 1 to 5 scale. Terrible. In line 2 hours and still missed our first flight. Next day, 1.5 hours but we made the flight. The Business Class food was poor. Unidentifiable. Not tasty at all. Unacceptable in BC. Attendants were adequate. Flight left late and arrived late. After this trip, we will not be flying TAP nor will we be connecting through Lisbon.

Flight attendants in business class were rather indifferent While in second leg operated by Portugalia TAP subsidiary were outstanfy

Great service overall. One of the best international flight experiences Ive had.

The chicken was so dry it was impossible to eat. No substitute was offered. The port to charge my phone was broken and all I got was a shrug from the crew. The entertainment system was glitchy and subtitles didn’t load. Crew seemed fully uninterested and unfriendly.

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

Information on your arrival and departure airports