$386 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 4/11. 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

Thu, Jun 4 - Sun, Jun 14
Air Transat Logo
11:35 am - 11:42 am
LIS
-
LAS
32h 07m
1 stop
Air Transat Logo
11:15 pm - 9:35 am
LAS
-
LIS
26h 20m
1 stop
$733Air Transat
Thu, Jun 4 - 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
$746Air Transat
Thu, Jun 4 - Sat, Jun 13
Air Transat Logo
11:35 am - 3:32 pm
LIS
-
LAS
35h 57m
1 stop
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$759Air 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
$779Air Transat
Wed, Jun 3 - Sat, Jun 13
Multiple Airlines Logo
6:10 am - 1:30 pm
LIS
-
LAS
39h 20m
2 stops
Multiple Airlines Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$852Multiple Airlines
Thu, Jun 4 - Sat, Jun 13
Multiple Airlines Logo
8:50 pm - 9:46 pm
LIS
-
LAS
32h 56m
2 stops
Multiple Airlines Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
$858Multiple Airlines
Mon, May 4 - Wed, May 13
KLM Logo
4:20 pm - 6:35 pm
OPO
-
LAS
34h 15m
1 stop
KLM Logo
5:50 pm - 10:00 pm
LAS
-
OPO
20h 10m
1 stop
$898KLM
Sun, Apr 5 - Sat, Apr 18
Delta Logo
5:00 am - 6:35 pm
OPO
-
LAS
21h 35m
1 stop
Delta Logo
5:50 pm - 10:00 pm
LAS
-
OPO
20h 10m
1 stop
$902Delta
Sun, Apr 5 - Sat, Apr 18
Delta Logo
5:00 am - 6:35 pm
OPO
-
LAS
21h 35m
1 stop
Delta Logo
9:55 am - 3:25 pm
LAS
-
OPO
21h 30m
2 stops
$903Delta
Sun, May 3 - Tue, May 12
KLM Logo
7:00 pm - 6:35 pm
OPO
-
LAS
31h 35m
1 stop
KLM Logo
8:25 pm - 6:20 pm
LAS
-
OPO
13h 55m
1 stop
$905KLM
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 Porto, at $733 return. The most popular connection is from Chicago to Las Vegas and KAYAK users have found round-trip deals for as low as $148 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.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$386
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 Porto 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 Porto, at $733 return. The most popular connection is from Chicago to Las Vegas and KAYAK users have found round-trip deals for as low as $148 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 5,942 direct flights from within Portugal to Las Vegas. The most common day for departures is Sunday, with 16% 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 8320 reviews
8.5Crew
8.1Boarding
7.2Food
7.9Comfort
7.8Entertainment
Airline reviews

The cabin temperature was nice and cool. The wifi was not working.

8.0 ExcellentMatt, Mar 2026
SEA - SJC
Read more Delta reviews

The cabin temperature was nice and cool. The wifi was not working.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

As previously noted, this flight was great: departure was timely, the crew was friendly and attentive, and wifi connectivity was seamless. In particular, I appreciated that the flight attendant just told me to stow the laptop right before takeoff/landing, and trusted me to do so (which I did!).

Kayak botched up the booking, i had to call delta and fix. In the process Delta failed to honor my comfort plus seat assignment that i had previously.

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

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

Las Vegas (LAS)