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$373+ Cheap flights from Portugal to Las Vegas (LAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LAS
Aug 4 — Aug 111
Tue 8/4
Tue 8/11
1 adult, Economy
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Cheap flight deals from Portugal to Las Vegas

Cheapest flights from Portugal to Las Vegas
Explore the most affordable flight options available from Portugal to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 5, 2026.

This Gotogate deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:35 am
LIS
-
LAS
1 stop18h 47m
Air Transat
Tue 8/411:20 pm
LAS
-
LIS
1 stop26h 15m
Air Transat
Deal found 7/2$709
This Rumbo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:35 am
LIS
-
LAS
1 stop18h 47m
Air Transat
Sat 7/2511:20 pm
LAS
-
LIS
1 stop26h 15m
Air Transat
Deal found 7/1$717
This Gotogate deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:30 pm
OPO
-
LAS
1 stop16h 52m
Air Transat
Tue 9/811:20 pm
LAS
-
OPO
1 stop28h 35m
Air Transat
Deal found 7/4$753
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:30 pm
OPO
-
LAS
1 stop16h 52m
Air Transat
Thu 7/2311:20 pm
LAS
-
OPO
1 stop28h 25m
Air Transat
Deal found 7/1$757
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am
LIS
-
LAS
3 stops46h 40m
Multiple Airlines
Tue 10/66:50 am
LAS
-
LIS
2 stops18h 30m
Multiple Airlines
Deal found 7/3$814
This Rumbo deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/201:30 pm
OPO
-
LAS
1 stop16h 52m
Air Transat
Tue 8/411:20 pm
LAS
-
OPO
1 stop28h 35m
Air Transat
Deal found 7/4$819
This Rumbo deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:35 am
LIS
-
LAS
1 stop18h 47m
Air Transat
Tue 8/2511:20 pm
LAS
-
LIS
1 stop26h 15m
Air Transat
Deal found 7/4$860
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/201:30 pm
OPO
-
LAS
1 stop16h 52m
Multiple Airlines
Tue 8/49:42 pm
LAS
-
OPO
2 stops51h 13m
Multiple Airlines
Deal found 7/4$867
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:30 pm
OPO
-
LAS
1 stop16h 52m
Multiple Airlines
Thu 7/239:42 pm
LAS
-
OPO
2 stops39h 43m
Multiple Airlines
Deal found 7/1$869
This Air Transat deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:35 am
LIS
-
LAS
1 stop29h 12m
Air Transat
Mon 8/249:45 am
LAS
-
LIS
1 stop15h 50m
Air Transat
Deal found 7/2$870
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:25 am
LIS
-
LAS
2 stops44h 57m
Multiple Airlines
Wed 9/95:50 pm
LAS
-
LIS
1 stop16h 00m
Multiple Airlines
Deal found 7/3$876
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:35 am
LIS
-
LAS
1 stop29h 12m
Multiple Airlines
Sun 9/206:10 pm
LAS
-
LIS
2 stops19h 35m
Multiple Airlines
Deal found 7/4$878

Find flight deals from Portugal to Las Vegas

Keep the following information in mind while searching for Portugal to Las Vegas flight deals. Data was last updated July 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$709
(Gotogate)

One-way from

$373
(Trip.com)

Popular in

July

Cheapest in

September

Average price

$1,397
Provider with most accurate pricing for Lisbon Humberto Delgado-Las Vegas Harry Reid Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Las Vegas Harry Reid Intl flights.
Search Deals
From Portugal to Las Vegas Harry Reid Intl
Search Deals
One-way flight from Portugal to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 5, 2026.
Use the filters below to find and compare flights from Portugal to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 8/24

4:20 pm-6:35 pm

1 stop34h 15m

Las Vegas Harry Reid Intl

Tue 9/8

12:17 pm-10:30 am

1 stop14h 13m

$940

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Sun 9/20

5:00 am-3:46 pm

2 stops18h 46m

Las Vegas Harry Reid Intl

Sat 9/26

5:50 pm-10:00 pm

1 stop20h 10m

$942

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Fri 9/25

11:55 am-6:35 pm

1 stop14h 40m

Las Vegas Harry Reid Intl

Thu 10/1

11:25 am-2:55 pm

2 stops19h 30m

$943

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Sun 9/20

5:00 am-5:55 pm

2 stops20h 55m

Las Vegas Harry Reid Intl

Sat 9/26

12:17 pm-3:25 pm

2 stops19h 08m

$944

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 9/21

5:00 am-7:36 pm

2 stops22h 36m

Las Vegas Harry Reid Intl

Sun 9/27

9:59 am-10:25 am

1 stop16h 26m

$945

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Sat 8/29

5:00 am-6:29 pm

2 stops21h 29m

Las Vegas Harry Reid Intl

Fri 9/11

11:20 am-2:55 pm

2 stops19h 35m

$949

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 10/7

6:00 am-4:20 pm

1 stop18h 20m

Las Vegas Harry Reid Intl

Sun 10/11

7:00 am-9:45 am

1 stop18h 45m

$963

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 9/9

6:00 am-8:04 pm

2 stops22h 04m

Las Vegas Harry Reid Intl

Mon 9/28

3:25 pm-9:45 am

1 stop34h 20m

$970

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Mon 9/7

7:25 am-4:20 pm

1 stop16h 55m

Las Vegas Harry Reid Intl

Wed 9/16

6:00 am-8:20 am

2 stops18h 20m

$975

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Wed 9/9

5:05 am-4:20 pm

1 stop19h 15m

Las Vegas Harry Reid Intl

Thu 9/17

6:00 am-8:20 am

2 stops18h 20m

$975

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 32 resultsSorted by cheapest first
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Best time to book a flight from Portugal to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Las Vegas

What is the cheapest month to book a flight from Portugal to Las Vegas?

Currently, November is the cheapest month in which you can book a flight from Portugal to Las Vegas (average of $235). Flying from Portugal to Las Vegas in June is currently the most expensive (average of $869). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Portugal to Las Vegas?

The price you pay for your flight from Portugal to Las Vegas may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Las Vegas from Portugal?

    Las Vegas Harry Reid Intl (LAS) is the airport you will fly into if you book a flight from Portugal to Las Vegas. It is only a 6.2 mi journey from Harry Reid Intl (LAS) to Las Vegas’s city center.

  • How long is the flight from Portugal to Las Vegas?

    KLM and Delta can get you from Portugal to Las Vegas in just under 14h 40m. Your travel time can differ by up to 19h 35m. The distance from Portugal to Las Vegas is about 5437 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Portugal to Las Vegas one-way?

    The cheapest airlines for a one-way flight from Portugal to Las Vegas are Air Transat ($394), American Airlines ($565), and British Airways ($580).

  • Can I find deals for flights from Portugal to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Portugal to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Las Vegas.

  • Can I find deals for business class flights from Portugal to Las Vegas?

    Yes. Cheapflights offers flight deals from Portugal to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to Las Vegas?

    Currently, November is the cheapest month in which you can book a flight from Portugal to Las Vegas (average of $235). Flying from Portugal to Las Vegas in June is currently the most expensive (average of $869). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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