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Cheap flights from Portugal to Las Vegas from $402

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Las Vegas departing on 9/16. 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 Portugal to Las Vegas

Recent round-trip flight deals from Portugal to Las Vegas

Air Transat Logo
8:50 am - 10:02 pmOPO-LAS
21h 12m1 stop
Air Transat Logo
11:05 pm - 7:05 amLAS-OPO
24h 00m1 stop
$611Air Transat
Find Deal
Sat, Jan 24 - Thu, Jan 29
Air Transat Logo
1:30 pm - 11:15 amOPO-LAS
29h 45m1 stop
Air Transat Logo
12:20 pm - 11:55 amLAS-OPO
15h 35m1 stop
$624Air Transat
Find Deal
Mon, Sep 22 - Wed, Oct 8
Delta Logo
11:40 am - 6:30 pmLIS-LAS
14h 50m1 stop
Delta Logo
3:20 pm - 5:50 pmLAS-LIS
18h 30m2 stops
$752Delta
Find Deal
Thu, Aug 28 - Thu, Sep 11
Delta Logo
11:40 am - 6:35 pmLIS-LAS
14h 55m1 stop
Delta Logo
3:20 pm - 5:55 pmLAS-LIS
18h 35m2 stops
$754Delta
Find Deal
Mon, Sep 22 - Sat, Sep 27
British Airways Logo
11:05 am - 6:26 pmLIS-LAS
15h 21m1 stop
British Airways Logo
5:05 pm - 11:10 pmLAS-LIS
22h 05m1 stop
$830British Airways
Find Deal
Fri, Sep 5 - Fri, Sep 12
British Airways Logo
11:05 am - 6:26 pmLIS-LAS
15h 21m1 stop
British Airways Logo
10:00 pm - 11:10 pmLAS-LIS
17h 10m1 stop
$831British Airways
Find Deal
Fri, Sep 5 - Sat, Sep 20
American Airlines Logo
11:05 am - 11:57 amLIS-LAS
32h 52m2 stops
American Airlines Logo
3:10 pm - 11:05 pmLAS-LIS
23h 55m1 stop
$841American Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 11
American Airlines Logo
11:05 am - 6:01 pmLIS-LAS
14h 56m1 stop
American Airlines Logo
1:10 am - 9:05 amLAS-LIS
23h 55m1 stop
$851American Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 23
United Airlines Logo
12:35 pm - 10:40 pmOPO-LAS
18h 05m1 stop
United Airlines Logo
12:32 pm - 9:45 amLAS-OPO
13h 13m1 stop
$876United Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 8
United Airlines Logo
12:30 pm - 8:43 pmOPO-LAS
40h 13m2 stops
United Airlines Logo
4:40 pm - 11:40 amLAS-OPO
35h 00m3 stops
$879United Airlines
Find Deal
Fri, Jan 23 - Fri, Jan 30

Delta flights from Portugal to Las Vegas

Our best Delta deals on Portugal to Las Vegas flight tickets
Delta
Aug 28
LIS11:40 amLisbon Humberto Delgado
14h 50m
1 stop
LAS6:30 pmLas Vegas Harry Reid Intl
Sep 11
LAS3:20 pmLas Vegas Harry Reid Intl
18h 30m
2 stops
LIS5:50 pmLisbon Humberto Delgado
$752
Find similar
Delta
Sep 22
LIS11:40 amLisbon Humberto Delgado
14h 55m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
Sep 27
LAS3:20 pmLas Vegas Harry Reid Intl
18h 35m
2 stops
LIS5:55 pmLisbon Humberto Delgado
$754
Find similar
Delta
Aug 26
LIS5:00 amLisbon Humberto Delgado
20h 47m
2 stops
LAS5:47 pmLas Vegas Harry Reid Intl
Sep 6
LAS11:25 amLas Vegas Harry Reid Intl
19h 25m
2 stops
LIS2:50 pmLisbon Humberto Delgado
$757
Find similar

Air Transat flights from Portugal to Las Vegas

Our best Air Transat deals on Portugal to Las Vegas flight tickets
Air Transat
Jan 24
OPO8:50 amPorto
21h 12m
1 stop
LAS10:02 pmLas Vegas Harry Reid Intl
Jan 29
LAS11:05 pmLas Vegas Harry Reid Intl
24h 00m
1 stop
OPO7:05 amPorto
$611
Find similar
Air Transat
Sep 22
OPO1:30 pmPorto
29h 45m
1 stop
LAS11:15 amLas Vegas Harry Reid Intl
Oct 8
LAS12:20 pmLas Vegas Harry Reid Intl
15h 35m
1 stop
OPO11:55 amPorto
$624
Find similar
Air Transat
Sep 22
OPO1:30 pmPorto
29h 45m
1 stop
LAS11:15 amLas Vegas Harry Reid Intl
Oct 8
LAS12:20 pmLas Vegas Harry Reid Intl
15h 35m
1 stop
OPO11:55 amPorto
$626
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 7, 2025.
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

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Sat 1/24

8:50 am-10:02 pm

1 stop21h 12m

Las Vegas Harry Reid Intl

Thu 1/29

11:05 pm-7:05 am

1 stop24h 00m

$611

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 9/22

1:30 pm-11:15 am

1 stop29h 45m

Las Vegas Harry Reid Intl

Wed 10/8

12:20 pm-11:55 am

1 stop15h 35m

$624

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Thu 8/28

11:40 am-6:30 pm

1 stop14h 50m

Las Vegas Harry Reid Intl

Thu 9/11

3:20 pm-5:50 pm

2 stops18h 30m

$752

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Mon 9/22

11:40 am-6:35 pm

1 stop14h 55m

Las Vegas Harry Reid Intl

Sat 9/27

3:20 pm-5:55 pm

2 stops18h 35m

$754

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Fri 9/5

11:05 am-6:26 pm

1 stop15h 21m

Las Vegas Harry Reid Intl

Fri 9/12

5:05 pm-11:10 pm

1 stop22h 05m

$830

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Fri 9/5

11:05 am-6:26 pm

1 stop15h 21m

Las Vegas Harry Reid Intl

Sat 9/20

10:00 pm-11:10 pm

1 stop17h 10m

$831

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Thu 8/28

11:05 am-11:57 am

2 stops32h 52m

Las Vegas Harry Reid Intl

Thu 9/11

3:10 pm-11:05 pm

1 stop23h 55m

$841

LisbonLas Vegas

LIS - LAS

LISLAS

Lisbon Humberto Delgado

Tue 10/7

11:05 am-6:01 pm

1 stop14h 56m

Las Vegas Harry Reid Intl

Thu 10/23

1:10 am-9:05 am

1 stop23h 55m

$851

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 9/22

12:35 pm-10:40 pm

1 stop18h 05m

Las Vegas Harry Reid Intl

Wed 10/8

12:32 pm-9:45 am

1 stop13h 13m

$876

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Fri 1/23

12:30 pm-8:43 pm

2 stops40h 13m

Las Vegas Harry Reid Intl

Fri 1/30

4:40 pm-11:40 am

3 stops35h 00m

$879

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 Las Vegas from

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

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 Las Vegas?

The month of February is, on average, the cheapest month to fly to Las Vegas from Portugal, with most prices found around $756. The month of September is another great option to travel to Las Vegas, with average flight prices from Portugal averaging around $792.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $808. Flights from Portugal to Las Vegas on a Sunday will generally be more expensive and average around $1,105. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

You are more likely to see cheaper flights to Las Vegas from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $930 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Portugal for as low as $710 on momondo.

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

You could potentially save up to 36% on your flight if you consider stops on a Portugal to Las Vegas flight.

Cheap Portugal to Las Vegas flight deals and tips

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

Best Price Found

$402

Fastest flight time

14h 50m

Direct flights

None

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Portugal in the past 72 hours is $402. The best round-trip flight deal from Portugal to Las Vegas found on momondo in the last 72 hours is $611.
The fastest flight from Portugal to Las Vegas takes 14h 50m
There are no direct flights from Portugal to Las Vegas. Popular non-direct routes for this connection are Porto Airport - Las Vegas Harry Reid Intl Airport and Lisbon Humberto Delgado Airport - Las Vegas Harry Reid Intl Airport.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

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

    Prices for flights from Portugal to Las Vegas Harry Reid Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The necessary travel and health documents for your Las Vegas Harry Reid Intl Airport 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 Portugal to Las Vegas

Compare and see reviews for airlines that fly from Portugal to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $706Free CancellationRating
6.6
7,245 reviews
Search British Airways flights
DeltaPriceFrom $729Free CancellationRating
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $790Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
American AirlinesPriceFrom $820Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Laughlin
Mount Charleston
Henderson
Mesquite
North Las Vegas
Paradise
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Winchester
Sunrise Manor
Needles

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portugal to Las Vegas for you.

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

Yes. All flights to Las Vegas from Portugal on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Portugal to Las Vegas flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Las Vegas, momondo offers a useful price alert feature which will track prices for flights to Las Vegas from Portugal and alert you when they change.

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