$412 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 4/23. 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
$671
Overall average: $852
Air Transat
Thu 4/9Thu 4/16
OPO - LAS • 1 stop
Cheapest one-way
$412
Typical prices: $587-$843
Multiple Airlines
Thu 4/23
LIS - LAS • 2 stops
When to travel
September
Cheapest • 19% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Thu, Apr 9 - Thu, Apr 16
Air Transat Logo
9:50 am - 10:42 pm
OPO
-
LAS
20h 52m
1 stop
Air Transat Logo
11:05 pm - 8:05 am
LAS
-
OPO
25h 00m
1 stop
$671Air Transat
Fri, Feb 20 - Fri, Mar 6
Air Transat Logo
9:00 am - 10:02 pm
LIS
-
LAS
21h 02m
1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m
1 stop
$693Air Transat
Fri, Feb 20 - Fri, Mar 6
Air Transat Logo
9:00 am - 10:02 pm
LIS
-
LAS
21h 02m
1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m
1 stop
$709Air Transat
Fri, Feb 20 - Fri, Mar 6
Air Transat Logo
9:00 am - 10:02 pm
LIS
-
LAS
21h 02m
1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m
1 stop
$711Air Transat
Fri, Feb 20 - Fri, Mar 6
Air Transat Logo
9:00 am - 10:02 pm
LIS
-
LAS
21h 02m
1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
23h 40m
1 stop
$714Air Transat
Fri, Apr 17 - Mon, Apr 20
Multiple Airlines Logo
9:45 pm - 10:02 pm
OPO
-
LAS
32h 17m
2 stops
Multiple Airlines Logo
7:00 am - 10:25 pm
LAS
-
OPO
31h 25m
3 stops
$718Multiple Airlines
Sun, Mar 1 - Mon, Mar 16
Air Transat Logo
8:35 am - 10:02 pm
LIS
-
LAS
21h 27m
1 stop
Air Transat Logo
11:05 pm - 6:45 am
LAS
-
LIS
24h 40m
1 stop
$731Air Transat
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
5:00 am - 10:49 pm
LIS
-
LAS
24h 49m
2 stops
Multiple Airlines Logo
10:50 am - 2:35 pm
LAS
-
LIS
20h 45m
2 stops
$736Multiple Airlines
Fri, Mar 27 - Mon, Apr 20
Air Transat Logo
9:00 am - 10:02 pm
LIS
-
LAS
20h 02m
1 stop
Air Transat Logo
11:05 pm - 7:45 am
LAS
-
LIS
24h 40m
1 stop
$749Air Transat
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
10:15 am - 10:49 pm
LIS
-
LAS
19h 34m
1 stop
Multiple Airlines Logo
10:50 am - 2:35 pm
LAS
-
LIS
20h 45m
2 stops
$751Multiple Airlines
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 August and March, where the average cost of tickets from Portugal is $1,122 and $1,057 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$412
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Lisbon 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 4,499 direct flights from within Portugal to Las Vegas. The most common day for departures is Monday, with 18% 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 airlines flying 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 8128 reviews
8.5Crew
8.1Boarding
7.2Food
7.9Comfort
7.8Entertainment
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Very convenient considering that is a non-stop flight, but the Aeromexico still has old model planes, so the entertainment was very poor and the space for carry-on luggage was very limited.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

Crew was clearly not loving their jobs at any point of the entire trip. Flight back from Mexico, I asked if they had food for sale for the 2.5+hr flight and they did not have any. The business class trip to Mexico also had noted that the catering company forgot to load food. The last leg of trip back had a similarly unhappy crew, a broken toilet, and my seat was broken (reclining would not lock which made landing a crossfit like event). This was a bad week for AA.

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

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Everything you need to know for your flight to Las Vegas

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