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Cheap flights from Las Vegas to Portugal from $342

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 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
British Airways Logo
11:40 pm - 12:10 pm
LAS
-
LIS
28h 30m2 stops
British Airways Logo
11:10 am - 10:36 pm
LIS
-
LAS
18h 26m1 stop
$446British Airways
Tue, Mar 3 - Tue, Mar 17
Multiple Airlines Logo
6:35 pm - 9:50 pm
LAS
-
LIS
19h 15m1 stop
Multiple Airlines Logo
8:20 am - 8:01 pm
LIS
-
LAS
19h 41m2 stops
$447Multiple Airlines
Wed, Jan 14 - Wed, Jan 28
Air Canada Logo
9:00 am - 9:20 am
LAS
-
LIS
16h 20m1 stop
Air Canada Logo
11:20 am - 8:39 pm
LIS
-
LAS
17h 19m1 stop
$448Air Canada
Tue, Jan 13 - Thu, Jan 29
Air Canada Logo
9:00 am - 9:20 am
LAS
-
LIS
16h 20m2 stops
Air Canada Logo
10:50 am - 10:31 pm
LIS
-
LAS
19h 41m1 stop
$449Air Canada
Sun, Jan 18 - Sun, Jan 25
Air Canada Logo
6:00 am - 9:20 am
LAS
-
LIS
19h 20m2 stops
Air Canada Logo
10:50 am - 10:31 pm
LIS
-
LAS
19h 41m1 stop
$453Air Canada
Sun, Jan 18 - Sun, Jan 25
United Airlines Logo
9:56 am - 8:10 am
LAS
-
LIS
14h 14m1 stop
United Airlines Logo
10:15 am - 8:12 pm
LIS
-
LAS
17h 57m1 stop
$456United Airlines
Mon, Jan 12 - Tue, Jan 27
Delta Logo
3:45 pm - 8:00 am
LAS
-
LIS
32h 15m1 stop
Delta Logo
10:00 am - 10:16 pm
LIS
-
LAS
20h 16m1 stop
$461Delta
Sat, Jan 17 - Wed, Jan 28
KLM Logo
1:00 pm - 7:20 pm
LAS
-
FAO
23h 20m2 stops
KLM Logo
10:20 am - 3:15 pm
FAO
-
LAS
35h 55m1 stop
$598KLM
Thu, Mar 12 - Wed, Mar 18
KLM Logo
1:00 pm - 7:20 pm
LAS
-
FAO
23h 20m2 stops
KLM Logo
6:55 pm - 7:37 pm
FAO
-
LAS
31h 42m2 stops
$608KLM
Thu, Mar 12 - Wed, Mar 18
United Airlines Logo
12:30 am - 4:05 pm
LAS
-
FAO
31h 35m2 stops
United Airlines Logo
6:05 am - 8:12 pm
FAO
-
LAS
22h 07m2 stops
$957United Airlines
Thu, Jan 22 - Mon, Jan 26

British Airways flights from Las Vegas to Portugal

Our best British Airways deals on Las Vegas to Portugal flight tickets
British Airways
Mar 3
LAS11:40 pmLas Vegas Harry Reid Intl
28h 30m
2 stops
LIS12:10 pmLisbon Humberto Delgado
Mar 17
LIS11:10 amLisbon Humberto Delgado
18h 26m
1 stop
LAS10:36 pmLas Vegas Harry Reid Intl
$446
Find similar
British Airways
Jan 11
LAS8:55 pmLas Vegas Harry Reid Intl
16h 50m
1 stop
LIS9:45 pmLisbon Humberto Delgado
Jan 29
LIS7:00 amLisbon Humberto Delgado
19h 50m
1 stop
LAS6:50 pmLas Vegas Harry Reid Intl
$458
Find similar
British Airways
Jan 7
LAS8:55 pmLas Vegas Harry Reid Intl
16h 55m
1 stop
LIS9:50 pmLisbon Humberto Delgado
Jan 14
LIS10:40 amLisbon Humberto Delgado
16h 10m
1 stop
LAS6:50 pmLas Vegas Harry Reid Intl
$505
Find similar

Air Canada flights from Las Vegas to Portugal

Our best Air Canada deals on Las Vegas to Portugal flight tickets
Air Canada
Jan 13
LAS9:00 amLas Vegas Harry Reid Intl
16h 20m
1 stop
LIS9:20 amLisbon Humberto Delgado
Jan 29
LIS11:20 amLisbon Humberto Delgado
17h 19m
1 stop
LAS8:39 pmLas Vegas Harry Reid Intl
$448
Find similar
Air Canada
Jan 18
LAS9:00 amLas Vegas Harry Reid Intl
16h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 25
LIS10:50 amLisbon Humberto Delgado
19h 41m
1 stop
LAS10:31 pmLas Vegas Harry Reid Intl
$449
Find similar
Air Canada
Jan 18
LAS6:00 amLas Vegas Harry Reid Intl
19h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 25
LIS10:50 amLisbon Humberto Delgado
19h 41m
1 stop
LAS10:31 pmLas Vegas Harry Reid Intl
$453
Find similar

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 December 5, 2025.
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

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Tue 3/3

11:40 pm-12:10 pm

2 stops28h 30m

Lisbon Humberto Delgado

Tue 3/17

11:10 am-10:36 pm

1 stop18h 26m

$446

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Wed 1/14

6:35 pm-9:50 pm

1 stop19h 15m

Lisbon Humberto Delgado

Wed 1/28

8:20 am-8:01 pm

2 stops19h 41m

$447

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Tue 1/13

9:00 am-9:20 am

1 stop16h 20m

Lisbon Humberto Delgado

Thu 1/29

11:20 am-8:39 pm

1 stop17h 19m

$448

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Sun 1/18

9:00 am-9:20 am

2 stops16h 20m

Lisbon Humberto Delgado

Sun 1/25

10:50 am-10:31 pm

1 stop19h 41m

$449

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Sun 1/18

6:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

Sun 1/25

10:50 am-10:31 pm

1 stop19h 41m

$453

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Mon 1/12

9:56 am-8:10 am

1 stop14h 14m

Lisbon Humberto Delgado

Tue 1/27

10:15 am-8:12 pm

1 stop17h 57m

$456

Las VegasLisbon

LAS - LIS

LASLIS

Las Vegas Harry Reid Intl

Sat 1/17

3:45 pm-8:00 am

1 stop32h 15m

Lisbon Humberto Delgado

Wed 1/28

10:00 am-10:16 pm

1 stop20h 16m

$461

Las VegasFaro

LAS - FAO

LASFAO

Las Vegas Harry Reid Intl

Thu 3/12

1:00 pm-7:20 pm

2 stops23h 20m

Faro

Wed 3/18

10:20 am-3:15 pm

1 stop35h 55m

$598

Las VegasFaro

LAS - FAO

LASFAO

Las Vegas Harry Reid Intl

Thu 3/12

1:00 pm-7:20 pm

2 stops23h 20m

Faro

Wed 3/18

6:55 pm-7:37 pm

2 stops31h 42m

$608

Las VegasFaro

LAS - FAO

LASFAO

Las Vegas Harry Reid Intl

Thu 1/22

12:30 am-4:05 pm

2 stops31h 35m

Faro

Mon 1/26

6:05 am-8:12 pm

2 stops22h 07m

$957

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 November. Flight prices, which tend to average around $739, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Las Vegas during March instead. Flights to Portugal in March, while not as cheap as those in November, still average around $788.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Sunday is the cheapest day to fly to Portugal from Las Vegas. The lowest ticket price found for a Sunday departure recently was $909. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $1,234.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from Las Vegas to Portugal during this time can be as low as $948. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,234 per ticket.

How far in advance should I book a flight 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 $983 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 $818 on momondo.

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

You could potentially save up to 13% 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

13h 20m

Direct flights

None
The fastest flight from Las Vegas to Portugal takes 13h 20m
There are no direct flights from Las Vegas to Portugal. There are no popular flight routes from Las Vegas to Portugal.
Search flight deals

  • 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
United AirlinesPriceFrom $503Free CancellationRating
7.4
9,064 reviews
Search United Airlines flights
Air CanadaPriceFrom $576Free CancellationRating
7.1
10,502 reviews
Search Air Canada flights
Air TransatPriceFrom $613Free CancellationRating
7.8
480 reviews
Search Air Transat flights
DeltaPriceFrom $641Free CancellationRating
7.9
8,010 reviews
Search Delta flights
Porter AirlinesPriceFrom $645Free CancellationRating
8.0
395 reviews
Search Porter Airlines flights
British AirwaysPriceFrom $648Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
American AirlinesPriceFrom $903Free CancellationRating
7.2
11,046 reviews
Search American Airlines 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.

An easier way to manage your Portugal trip

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