$365 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 6/23. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$581
Overall average: $1,058
Air Transat
Thu 3/26Thu 4/9
OPO - LAS • 1 stop
Cheapest one-way
$365
Typical prices: $843-$1,025
Multiple Airlines
Tue 6/23
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
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

Thu, Mar 26 - Thu, Apr 9
Air Transat Logo
8:50 am - 10:42 pm
OPO
-
LAS
20h 52m
1 stop
Air Transat Logo
11:45 pm - 8:05 am
LAS
-
OPO
24h 20m
1 stop
$581Air Transat
Thu, Mar 26 - Thu, Apr 9
Air Transat Logo
8:50 am - 10:42 pm
OPO
-
LAS
20h 52m
1 stop
Air Transat Logo
11:45 pm - 8:05 am
LAS
-
OPO
24h 20m
1 stop
$588Air Transat
Thu, Mar 26 - Thu, Apr 9
Air Transat Logo
8:50 am - 10:42 pm
OPO
-
LAS
20h 52m
1 stop
Air Transat Logo
11:45 pm - 8:05 am
LAS
-
OPO
24h 20m
1 stop
$590Air Transat
Thu, Apr 9 - Thu, Apr 23
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
$638Air Transat
Thu, Mar 26 - Thu, Apr 9
Air Transat Logo
8:50 am - 11:42 am
OPO
-
LAS
33h 52m
1 stop
Air Transat Logo
11:45 pm - 8:05 am
LAS
-
OPO
24h 20m
1 stop
$648Air Transat
Sun, Mar 8 - Mon, Mar 23
Air Transat Logo
8:35 am - 9:02 pm
LIS
-
LAS
20h 27m
1 stop
Air Transat Logo
12:40 pm - 6:45 am
LAS
-
LIS
35h 05m
1 stop
$656Air Transat
Sat, Apr 18 - Tue, Apr 21
Multiple Airlines Logo
10:40 am - 10:02 pm
LIS
-
LAS
19h 22m
1 stop
Multiple Airlines Logo
11:49 pm - 1:40 pm
LAS
-
LIS
29h 51m
2 stops
$732Multiple Airlines
Thu, Mar 26 - Thu, Apr 9
Multiple Airlines Logo
8:50 am - 10:12 pm
OPO
-
LAS
20h 22m
1 stop
Multiple Airlines Logo
11:59 pm - 8:05 am
LAS
-
OPO
24h 06m
2 stops
$768Multiple Airlines
Fri, Apr 10 - Fri, Apr 17
Scandinavian Airlines Logo
9:15 pm - 9:59 pm
LIS
-
LAS
32h 44m
2 stops
Scandinavian Airlines Logo
9:20 am - 9:00 am
LAS
-
LIS
39h 40m
2 stops
$823Scandinavian Airlines
Mon, May 4 - Wed, May 13
KLM Logo
7:00 pm - 6:35 pm
OPO
-
LAS
31h 35m
1 stop
KLM Logo
8:25 pm - 10:40 am
LAS
-
OPO
30h 15m
1 stop
$869KLM
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 $775 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 $1,100 and $1,071 respectively. For return trips, the best month to travel is September with an average price of $775.

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$365
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 2% 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 5,805 direct flights from within Portugal to Las Vegas. The most common day for departures is Thursday, 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 8203 reviews
7.9Comfort
7.2Food
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

6.0 GoodNikhil, Feb 2026
DTW - ORD
Read more Delta reviews

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

This is the first time I've been disappointed with Delta. I was called by Delta to see if I would volunteer to change flights since my original flight home was overbooked. I accepted. The modified booking only provided me a 35 minute layover - when you subtract the fact that boarding closes for a flight 15 minutes early, that gave me 20 minutes to run for one end of the airport to the other. I barely made it. On the 2.5 hour flight to Tampa, the crew repeatedly let us know over the intercom that they cannot serve drinks or snacks due to safety/turbulence. I would have accepted this reason if they did not CONTINUALLY SERVE DRINKS AND COOKED FOOD to First class. If safety is the excuse then the entire plane should be strapped in for safety. On top of this the air conditioning vents were not working correctly and the plane was uncomfortably warm. I love Delta and am a loyal Delta traveler, and I have never had an experience like this. I don't know if there's a disconnect between availability among third-party sites like KAYAK and the airlines or what, but when overbooking causes issues like this for travelers it should be reviewed and changes to the booking process should be made. I blame BOTH KAYAK and Delta for this terrible experience.

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Smooth boarding, pleasant and professional lady checking us in. Crew service was excellent, again pleasant, but professional. Nice touch-down on landing! Thank you Delta. 💗

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Primm
Winchester
Sunrise Manor

Everything you need to know for your flight to Las Vegas

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