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Cheap flights from Las Vegas to Portugal from $420

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Portugal departing on 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Las Vegas to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Transat Logo
9:45 am - 9:35 am
LAS
-
LIS
15h 50m
1 stop
Air Transat Logo
11:35 am - 10:22 pm
LIS
-
LAS
18h 47m
1 stop
$715Air Transat
Thu, Jul 9 - Thu, Jul 23
Multiple Airlines Logo
9:10 am - 9:50 am
LAS
-
LIS
16h 40m
1 stop
Multiple Airlines Logo
5:00 am - 10:17 pm
LIS
-
LAS
25h 17m
2 stops
$725Multiple Airlines
Mon, Nov 2 - Wed, Nov 11
Air Canada Logo
9:10 am - 9:50 am
LAS
-
LIS
16h 40m
1 stop
Air Canada Logo
11:20 am - 8:39 pm
LIS
-
LAS
17h 19m
1 stop
$726Air Canada
Mon, Nov 2 - Wed, Nov 11
United Airlines Logo
1:20 pm - 10:15 am
LAS
-
LIS
12h 55m
1 stop
United Airlines Logo
5:00 am - 2:35 pm
LIS
-
LAS
17h 35m
1 stop
$744United Airlines
Wed, Nov 25 - Thu, Dec 3
Delta Logo
5:50 pm - 5:30 pm
LAS
-
LIS
15h 40m
1 stop
Delta Logo
5:30 am - 3:35 pm
LIS
-
LAS
18h 05m
1 stop
$752Delta
Mon, Nov 16 - Fri, Nov 27
United Airlines Logo
1:20 pm - 10:15 am
LAS
-
LIS
12h 55m
1 stop
United Airlines Logo
5:00 am - 10:17 pm
LIS
-
LAS
25h 17m
2 stops
$754United Airlines
Mon, Nov 16 - Fri, Nov 27
British Airways Logo
11:41 am - 11:35 am
LAS
-
FNC
39h 54m
2 stops
British Airways Logo
5:00 pm - 9:13 pm
FNC
-
LAS
36h 13m
2 stops
$820British Airways
Sat, Nov 7 - Thu, Nov 12
British Airways Logo
8:55 pm - 11:35 am
LAS
-
FNC
30h 40m
1 stop
British Airways Logo
5:00 pm - 6:50 pm
FNC
-
LAS
33h 50m
1 stop
$870British Airways
Sat, Nov 7 - Thu, Nov 12
KLM Logo
8:25 pm - 8:50 am
LAS
-
FAO
28h 25m
1 stop
KLM Logo
8:50 am - 6:35 pm
FAO
-
LAS
17h 45m
1 stop
$922KLM
Sun, Aug 16 - Wed, Aug 26
KLM Logo
8:25 pm - 7:40 am
LAS
-
FAO
27h 15m
1 stop
KLM Logo
8:20 pm - 6:35 pm
FAO
-
LAS
30h 15m
1 stop
$924KLM
Tue, Sep 15 - Thu, Sep 24

Porter Airlines flights from Las Vegas to Portugal

Our best Porter Airlines deals on Las Vegas to Portugal flight tickets
Porter Airlines
Nov 25
LAS11:05 pmLas Vegas Harry Reid Intl
23h 40m
1 stop
LIS6:45 amLisbon Humberto Delgado
Dec 3
LIS9:00 amLisbon Humberto Delgado
34h 42m
1 stop
LAS11:42 amLas Vegas Harry Reid Intl
$740
Porter Airlines
Aug 19
LAS9:45 amLas Vegas Harry Reid Intl
15h 50m
1 stop
LIS9:35 amLisbon Humberto Delgado
Aug 27
LIS11:35 amLisbon Humberto Delgado
18h 42m
1 stop
LAS10:17 pmLas Vegas Harry Reid Intl
$860

KLM flights from Las Vegas to Portugal

Our best KLM deals on Las Vegas to Portugal flight tickets
KLM
Oct 5
LAS8:25 pmLas Vegas Harry Reid Intl
14h 20m
1 stop
LIS6:45 pmLisbon Humberto Delgado
Oct 15
LIS10:25 amLisbon Humberto Delgado
16h 10m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
$844
KLM
Aug 16
LAS8:25 pmLas Vegas Harry Reid Intl
28h 25m
1 stop
FAO8:50 amFaro
Aug 26
FAO8:50 amFaro
17h 45m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
$922
KLM
Sep 15
LAS8:25 pmLas Vegas Harry Reid Intl
27h 15m
1 stop
FAO7:40 amFaro
Sep 24
FAO8:20 pmFaro
30h 15m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
$924

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas to Portugal 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, momondo users made 832,500 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Las Vegas to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Thu 7/9

9:45 am-9:35 am

1 stop15h 50m

Lisbon Humberto Delgado

Thu 7/23

11:35 am-10:22 pm

1 stop18h 47m

$715

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Mon 11/2

9:10 am-9:50 am

1 stop16h 40m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-10:17 pm

2 stops25h 17m

$725

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Mon 11/2

9:10 am-9:50 am

1 stop16h 40m

Lisbon Humberto Delgado

Wed 11/11

11:20 am-8:39 pm

1 stop17h 19m

$726
Quickest round-trip

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Wed 11/25

1:20 pm-10:15 am

1 stop12h 55m

Lisbon Humberto Delgado

Thu 12/3

5:00 am-2:35 pm

1 stop17h 35m

$744

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Mon 11/16

5:50 pm-5:30 pm

1 stop15h 40m

Lisbon Humberto Delgado

Fri 11/27

5:30 am-3:35 pm

1 stop18h 05m

$752

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Mon 11/16

1:20 pm-10:15 am

1 stop12h 55m

Lisbon Humberto Delgado

Fri 11/27

5:00 am-10:17 pm

2 stops25h 17m

$754

Las VegasFunchal

LAS - FNC

LASFNC

Las Vegas Harry Reid Intl

Sat 11/7

11:41 am-11:35 am

2 stops39h 54m

Funchal Madeira

Thu 11/12

5:00 pm-9:13 pm

2 stops36h 13m

$820

Las VegasFunchal

LAS - FNC

LASFNC

Las Vegas Harry Reid Intl

Sat 11/7

8:55 pm-11:35 am

1 stop30h 40m

Funchal Madeira

Thu 11/12

5:00 pm-6:50 pm

1 stop33h 50m

$870

Las VegasFaro

LAS - FAO

LASFAO

Las Vegas Harry Reid Intl

Sun 8/16

8:25 pm-8:50 am

1 stop28h 25m

Faro

Wed 8/26

8:50 am-6:35 pm

1 stop17h 45m

$922

Las VegasFaro

LAS - FAO

LASFAO

Las Vegas Harry Reid Intl

Tue 9/15

8:25 pm-7:40 am

1 stop27h 15m

Faro

Thu 9/24

8:20 pm-6:35 pm

1 stop30h 15m

$924

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from Las Vegas to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Las Vegas is in April. Flight prices, which tend to average around $485, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Portugal from Las Vegas during December instead. Flights to Portugal in December, while not as cheap as those in April, still average around $493.

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

You are more likely to see cheaper flights to Portugal from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $910 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Las Vegas for as low as $644 on momondo.

Can stopping save me money on Las Vegas to Portugal flights?

You could potentially save up to 24% on your flight if you consider stops on a Las Vegas to Portugal flight.

Cheap Las Vegas to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Portugal

Fastest flight time

14h 05m

Direct flights

None
The fastest flight from Las Vegas to Portugal takes 14h 05m
There are no direct flights from Las Vegas to Portugal. There are no popular flight routes from Las Vegas to Portugal.
Search flight deals

Frequently asked questions about flying from Las Vegas to Portugal

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Portugal?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Portugal are refreshed on a daily basis.

  • How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Portugal?

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Portugal?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Las Vegas to Portugal

Compare and see reviews for airlines that fly from Las Vegas to Portugal with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $485Free CancellationRating
7.8
1,524 reviews
Search KLM flights
Air FrancePriceFrom $493Free CancellationRating
7.4
1,595 reviews
Search Air France flights
DeltaPriceFrom $498Free CancellationRating
7.9
8,397 reviews
Search Delta flights
United AirlinesPriceFrom $503Free CancellationRating
7.4
9,772 reviews
Search United Airlines flights
Air CanadaPriceFrom $504Free CancellationRating
7.1
11,126 reviews
Search Air Canada flights
British AirwaysPriceFrom $505Free CancellationRating
6.7
8,025 reviews
Search British Airways flights
Air TransatPriceFrom $785Free CancellationRating
7.8
554 reviews
Search Air Transat flights

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Las Vegas to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Las Vegas to Portugal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portugal from Las Vegas with this policy.

How can momondo help me find flights from Las Vegas to Portugal?

Once you have performed a search for Las Vegas to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Las Vegas to Portugal right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Las Vegas to Portugal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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