$394 Find Cheap Flights from Portugal to Las Vegas

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Las Vegas departing on 7/7. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Las Vegas

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Las Vegas, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Las Vegas, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$645
Overall average: $808
Air Transat
Sun 2/8Mon 2/23
LIS - LAS • 1 stop
Cheapest one-way
$394
Typical prices: $496-$803
Air Transat
Tue 7/7
OPO - LAS • 1 stop
When to travel
September
Cheapest • 20% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Las Vegas!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portugal to Las Vegas

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portugal to Las Vegas 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 Portugal to Las Vegas

Sun, Feb 8 - Mon, Feb 23
Air Transat Logo
8:35 am - 10:02 pm
LIS
-
LAS
21h 27m1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m1 stop
$645Air Transat
Sun, Feb 8 - Mon, Feb 23
Air Transat Logo
8:35 am - 10:02 pm
LIS
-
LAS
21h 27m1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m1 stop
$647Air Transat
Mon, Feb 23 - Mon, Mar 2
Iberia Logo
8:45 pm - 8:13 pm
LIS
-
LAS
31h 28m2 stops
Iberia Logo
7:00 am - 9:05 am
LAS
-
LIS
18h 05m1 stop
$688Iberia
Thu, Feb 26 - Thu, Mar 12
Air Transat Logo
8:50 am - 10:42 pm
OPO
-
LAS
21h 52m1 stop
Air Transat Logo
11:45 pm - 7:05 am
LAS
-
OPO
24h 20m1 stop
$688Air Transat
Fri, Apr 10 - Tue, Apr 21
Iberia Logo
11:05 am - 10:28 pm
LIS
-
LAS
19h 23m1 stop
Iberia Logo
10:49 am - 9:05 am
LAS
-
LIS
14h 16m1 stop
$693Iberia
Sat, Feb 7 - Sat, Feb 14
Iberia Logo
8:20 am - 10:03 pm
LIS
-
LAS
21h 43m2 stops
Iberia Logo
7:00 am - 9:05 am
LAS
-
LIS
18h 05m1 stop
$696Iberia
Sat, Feb 7 - Sat, Feb 14
British Airways Logo
7:00 am - 9:00 pm
LIS
-
LAS
22h 00m2 stops
British Airways Logo
12:29 pm - 2:50 pm
LAS
-
LIS
18h 21m2 stops
$713British Airways
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
11:05 am - 10:30 pm
LIS
-
LAS
19h 25m1 stop
British Airways Logo
10:31 am - 9:05 am
LAS
-
LIS
14h 34m1 stop
$740British Airways
Mon, May 4 - Wed, May 13
American Airlines Logo
8:20 am - 11:05 pm
OPO
-
LAS
22h 45m2 stops
American Airlines Logo
5:45 am - 11:45 am
LAS
-
OPO
22h 00m2 stops
$788American Airlines
Mon, May 4 - Wed, May 13
Delta Logo
5:00 am - 5:49 pm
OPO
-
LAS
20h 49m2 stops
Delta Logo
5:50 pm - 10:00 pm
LAS
-
OPO
20h 10m1 stop
$810Delta
Booking Insights

KAYAK's insights & trends for flights to Las Vegas

Get data-powered insights and trends for flights to Las Vegas to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Las Vegas?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Las Vegas, 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 to Las Vegas is September, where tickets cost $771 on average for one-way flights. On the other hand, the most expensive months are March and August, where the average cost of tickets from Portugal is $1,126 and $1,122 respectively. For return trips, the best month to travel is September with an average price of $771.

How far in advance should I book a flight to Las Vegas?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Las Vegas, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 days before departure.

Good to know

Low seasonDecember
Cheapest flight$394
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Porto to Las Vegas

FAQs - booking Las Vegas flights

  • How far is Las Vegas Harry Reid Intl Airport from central Las Vegas?

    You’ll need to travel 6 miles to reach the Las Vegas city center from Las Vegas Harry Reid Intl Airport.

  • What is the name of Las Vegas’s airport?

    There is only 1 airport in Las Vegas, called Las Vegas Harry Reid Intl Airport (LAS). It can also be referred to as Harry Reid Intl, Las Vegas Mccarran, McCarran, or McCarran Intl.

  • How does KAYAK find such low prices on flights to Las Vegas?

    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 to Las Vegas.

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

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

  • What is the Hacker Fare option on flights to Las Vegas?

    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 to Las Vegas 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 to Las Vegas?

    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 to Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Las Vegas are there each week?

    Each week there are around 3,659 direct flights from within Portugal to Las Vegas. The most common day for departures is Friday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Las Vegas

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Las Vegas flight deals.

Reviews of the top 3 airlines serving from Portugal to Las Vegas

 
See real verified KAYAK customer reviews for airlines flying to Las Vegas. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Las Vegas. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Las Vegas? 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.
7.9
DeltaOverall score based on 8032 reviews
7.8Entertainment
7.9Comfort
7.2Food
8.1Boarding
8.5Crew
Airline reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

2.0 MediocreWilliam, Jan 2026
LGA - BOS
Read more Delta reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

The flight was on time and arrived early. The crew were friendly and helpful.

We had a 2 hour delay that impacted our comanions further travel. I have a feeling AA knows there is a problem at the Cabo airport and does not account for that.

My carry on baggage was damaged. Entire trip, I had to carry the baggage. When complained to the boarding crew, they got mad at me and still asked me to valet check in the cabin baggage. Rude boarding crew!!!

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Nothing to write home about, average flight experience. Seats were spacious enough, crew friendly enough. Loved the AA entertainment/wifi service.

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

Experience was good. We were delayed in leaving by 15 mins because the flight was waiting on a family that was late in getting to the gate. Food and drink options were as expected. I highly recommend checking in ahead of time using the airline’s app so that it’s quicker to get your luggage tags as soon as you arrive at the terminal. No more waiting in long lines!

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

The flight crew was kind, flexible, and accommodating. The seats on the plane were extremely uncomfortable.

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

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