$459 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 6/15. 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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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

Mon, Jul 20 - Tue, Aug 4
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
11:15 pm - 9:35 am
LAS
-
LIS
26h 20m
1 stop
$657Air Transat
Thu, Jun 25 - Thu, Jul 9
Air Transat Logo
11:35 am - 10:22 pm
LIS
-
LAS
18h 47m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$660Air Transat
Mon, Jul 20 - Tue, Aug 4
Air Transat Logo
11:35 am - 10:22 pm
LIS
-
LAS
18h 47m
1 stop
Air Transat Logo
11:20 pm - 9:35 am
LAS
-
LIS
26h 15m
1 stop
$661Air Transat
Mon, Jul 20 - Tue, Aug 4
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
11:15 pm - 9:35 am
LAS
-
LIS
26h 20m
1 stop
$662Air Transat
Thu, Jul 23 - Wed, Aug 5
Air Transat Logo
1:30 pm - 10:22 pm
OPO
-
LAS
16h 52m
1 stop
Air Transat Logo
11:20 pm - 11:45 am
LAS
-
OPO
28h 25m
1 stop
$672Air Transat
Tue, Jun 16 - Wed, Jul 15
Air Transat Logo
11:35 am - 11:42 am
LIS
-
LAS
32h 07m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$728Air Transat
Mon, Jul 20 - Wed, Jul 22
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
11:15 pm - 9:35 am
LAS
-
LIS
26h 20m
1 stop
$745Air Transat
Thu, Jul 16 - Thu, Jul 23
Air Transat Logo
11:35 am - 8:47 am
LIS
-
LAS
29h 12m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$753Air Transat
Mon, Jun 29 - Wed, Jul 15
Multiple Airlines Logo
1:30 pm - 8:47 am
OPO
-
LAS
27h 17m
1 stop
Multiple Airlines Logo
9:45 am - 9:20 pm
LAS
-
OPO
27h 35m
2 stops
$843Multiple Airlines
Thu, Jul 23 - Wed, Aug 5
Multiple Airlines Logo
1:30 pm - 10:17 pm
OPO
-
LAS
16h 47m
1 stop
Multiple Airlines Logo
9:15 am - 10:55 pm
LAS
-
OPO
29h 40m
2 stops
$886Multiple 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 return flights. On the other hand, the most expensive months are October and August, where the average cost of tickets from Portugal is $1,184 and $1,100 respectively. For one-way flights, 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 8 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$459
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 11% 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 8,306 direct flights from within Portugal to Las Vegas. The most common day for departures is Sunday, with 19% 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 airline 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 8398 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

8.0 ExcellentAnonymous, Jun 2026
ATL - GNV
Read more Delta reviews

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

Great flight with a terrific crew. Uneventful and early arrival. Thank you.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Flight was delayed. Then eventually cancelled. The female staff that was announcing overhead was unprofessional. She was telling everyone that the company is not going to give any money for taxi, hotel etc. then eventually the flight was cancelled.

Traveling to a place near Las Vegas?

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Everything you need to know for your flight to Las Vegas

Information on the airport you'll fly into in Las Vegas