$398 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 6/11. 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

Fri, Sep 25 - Thu, Oct 1
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$648Air Transat
Fri, Sep 25 - Thu, Oct 1
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$684Air Transat
Fri, Sep 25 - Thu, Oct 1
Air Transat Logo
11:35 am - 10:17 pm
LIS
-
LAS
18h 42m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$686Air Transat
Tue, Jul 21 - Fri, Jul 24
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
$750Air Transat
Fri, Jun 5 - Sat, Jun 13
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
$757Air Transat
Tue, Jun 9 - Sat, Jun 13
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
$804Air Transat
Tue, Jun 9 - Sat, Jun 13
Multiple Airlines Logo
6:30 am - 11:48 pm
LIS
-
LAS
25h 18m
3 stops
Multiple Airlines Logo
11:25 pm - 9:35 am
LAS
-
LIS
26h 10m
2 stops
$850Multiple Airlines
Wed, May 20 - Sat, May 30
KLM Logo
5:00 am - 6:35 pm
OPO
-
LAS
21h 35m
1 stop
KLM Logo
5:50 pm - 10:00 pm
LAS
-
OPO
20h 10m
1 stop
$899KLM
Mon, May 4 - Wed, May 13
KLM Logo
7:00 pm - 6:35 pm
OPO
-
LAS
31h 35m
1 stop
KLM Logo
5:50 pm - 10:00 pm
LAS
-
OPO
20h 10m
1 stop
$901KLM
Wed, May 20 - Sat, May 30
KLM Logo
5:00 am - 6:35 pm
OPO
-
LAS
21h 35m
1 stop
KLM Logo
9:30 am - 10:20 am
LAS
-
OPO
16h 50m
1 stop
$902KLM
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 flight to Las Vegas?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Las Vegas was found on the route from Lisbon, at $648 return. The most popular connection is from Newark to Las Vegas and KAYAK users have found round-trip deals for as low as $212 in the last 3 days.

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 March and August, where the average cost of tickets from Portugal is $1,123 and $1,077 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 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$398
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Lisbon to Las Vegas

FAQs - booking Las Vegas flights

  • What is the cheapest flight to Las Vegas?

    In the last 3 days, the cheapest flight deal to Las Vegas was found on the route from Lisbon, at $648 return. The most popular connection is from Newark to Las Vegas and KAYAK users have found round-trip deals for as low as $212 in the last 3 days.

  • 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 4,942 direct flights from within Portugal to Las Vegas. The most common day for departures is Monday, 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 8364 reviews
8.1Boarding
7.2Food
7.8Entertainment
7.9Comfort
8.5Crew
Airline reviews

This was my first flight with Delta, the overall experience was good. I would definitely consider them more with my future flights.

8.0 ExcellentAleesha, Mar 2026
GUA - ATL
Read more Delta reviews

This was my first flight with Delta, the overall experience was good. I would definitely consider them more with my future flights.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Wonderful crew, great movie selection and good food. I prefer Airbus to Boeing, much more comfortable

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