$491 Find Cheap Flights from Portugal to Las Vegas - Compare and Save

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 9/28. 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 - 8:47 am
LIS
-
LAS
29h 12m
1 stop
Air Transat Logo
11:20 pm - 9:35 am
LAS
-
LIS
26h 15m
1 stop
$632Air 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
$652Air 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
$674Air 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
$678Air Transat
Mon, Jul 27 - Wed, Aug 12
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
$727Air Transat
Mon, Jul 27 - Wed, Aug 12
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
$733Air Transat
Mon, Jul 20 - Tue, Jul 28
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
$746Air Transat
Fri, Aug 7 - Sun, Aug 23
Air Transat Logo
11:35 am - 8:47 am
LIS
-
LAS
29h 12m
1 stop
Air Transat Logo
11:20 pm - 9:35 am
LAS
-
LIS
26h 15m
1 stop
$748Air Transat
Thu, Jul 9 - Wed, Jul 22
Air Transat Logo
1:30 pm - 10:22 pm
OPO
-
LAS
16h 52m
1 stop
Air Transat Logo
9:45 am - 11:55 am
LAS
-
OPO
18h 10m
1 stop
$754Air Transat
Thu, Jul 23 - Fri, Jul 31
Multiple Airlines Logo
1:30 pm - 10:22 pm
OPO
-
LAS
16h 52m
1 stop
Multiple Airlines Logo
11:39 pm - 11:10 pm
LAS
-
OPO
39h 31m
2 stops
$804Multiple 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 flight to Las Vegas?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to Las Vegas was found on the route from Porto, at $632 return. The most popular connection is from Lisbon to Las Vegas and KAYAK users have found round-trip deals for as low as $632 in the last 5 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 round-trip 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 November, where tickets cost $235 on average for return flights. On the other hand, the most expensive months are June and October, where the average cost of tickets from Portugal is $869 and $763 respectively. For one-way flights, the best month to travel is May with an average price of $459.

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 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$491
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Porto to Las Vegas

FAQs - booking Las Vegas flights

  • What is the cheapest flight to Las Vegas?

    In the last 5 days, the cheapest flight deal to Las Vegas was found on the route from Porto, at $632 return. The most popular connection is from Lisbon to Las Vegas and KAYAK users have found round-trip deals for as low as $632 in the last 5 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 6,510 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.
7.8
DeltaOverall score based on 8410 reviews
8.1Boarding
7.2Food
8.5Crew
7.8Comfort
7.8Entertainment
Airline reviews

We sat on the runway for over an hour before departure. That was unwelcome.

6.0 GoodAnonymous, Jun 2026
SEA - SFO
Read more Delta reviews

We sat on the runway for over an hour before departure. That was unwelcome.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Crew helpful. Plenty of food although not great but ok. Good time.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

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