What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Portugal?

British Airways, Iberia, and Delta are the most popular carriers operating from Las Vegas Harry Reid Intl to Portugal

What airlines fly to Portugal?

Delta, British Airways and KLM are the top three most popular airlines that fly to Portugal from Las Vegas according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 10 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Las Vegas Harry Reid Intl Airport to Portugal is 10 as of October 2026.

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.

$259 Cheap Flights from Las Vegas to Portugal in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Las Vegas to Portugal

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:50 pm - 12:50 pmLAS Las Vegas Harry Reid Intl-OPO Porto

29h 00m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

6:00 am - 11:19 amOPO Porto-LAS Las Vegas Harry Reid Intl

36h 19m2 stops Frankfurt am Main Toronto Pearson Intl

$707Multiple Airlines

Sun, Mar 7 - Wed, Mar 17

4:20 pm - 3:20 pmLAS Las Vegas Harry Reid Intl-OPO Porto

15h 00m1 stop Frankfurt am Main

6:00 am - 11:19 amOPO Porto-LAS Las Vegas Harry Reid Intl

36h 19m2 stops Frankfurt am Main Toronto Pearson Intl

$711Multiple Airlines

Sun, Mar 7 - Wed, Mar 17

9:05 am - 9:05 amLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

16h 00m1 stop Philadelphia

4:45 pm - 8:10 amLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

23h 25m2 stops Madrid Barajas Dallas/Fort Worth

$719Iberia

Mon, Feb 1 - Mon, Feb 22

6:48 am - 11:50 amLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

21h 02m2 stops Chicago O'Hare Intl Madrid Barajas

8:45 pm - 10:00 amLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

21h 15m2 stops Madrid Barajas Dallas/Fort Worth

$727Iberia

Mon, Feb 1 - Mon, Feb 22

11:35 pm - 6:45 amLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

23h 10m1 stop Toronto Pearson Intl

8:35 am - 1:34 pmLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

36h 59m1 stop Toronto Pearson Intl

$752Air Transat

Fri, Dec 4 - Sun, Dec 20

6:00 am - 9:45 amLAS Las Vegas Harry Reid Intl-OPO Porto

19h 45m2 stops Houston George Bush Intcntl Newark

6:00 am - 4:20 pmOPO Porto-LAS Las Vegas Harry Reid Intl

18h 20m1 stop Frankfurt am Main

$757United Airlines

Tue, Apr 13 - Mon, Apr 19

7:10 am - 9:45 amLAS Las Vegas Harry Reid Intl-OPO Porto

18h 35m1 stop Newark

6:00 am - 4:20 pmOPO Porto-LAS Las Vegas Harry Reid Intl

18h 20m1 stop Frankfurt am Main

$757United Airlines

Tue, Apr 13 - Mon, Apr 19

11:35 pm - 6:45 amLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

23h 10m1 stop Toronto Pearson Intl

8:35 am - 1:34 pmLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

36h 59m1 stop Toronto Pearson Intl

$760Air Transat

Fri, Nov 27 - Fri, Dec 11

8:55 pm - 9:55 pmLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

17h 00m1 stop London Heathrow

11:05 am - 9:54 pmLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

18h 49m1 stop Philadelphia

$768British Airways

Mon, Feb 1 - Mon, Feb 22

12:46 pm - 10:30 pmLAS Las Vegas Harry Reid Intl-LIS Lisbon Humberto Delgado

26h 44m2 stops New York John F Kennedy Intl London Heathrow

7:05 am - 12:08 amLIS Lisbon Humberto Delgado-LAS Las Vegas Harry Reid Intl

24h 03m2 stops London Heathrow Chicago O'Hare Intl

$813British Airways

Fri, Mar 19 - Wed, Mar 24

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Air Transat flights from Las Vegas to Portugal

Our best Air Transat deals on Las Vegas to Portugal flight tickets

Air Transat

Dec 4

LAS11:35 pmLas Vegas Harry Reid Intl

23h 10m

1 stop

LIS6:45 amLisbon Humberto Delgado

Dec 20

LIS8:35 amLisbon Humberto Delgado

36h 59m

1 stop

LAS1:34 pmLas Vegas Harry Reid Intl

$752

Air Transat

Nov 27

LAS11:35 pmLas Vegas Harry Reid Intl

23h 10m

1 stop

LIS6:45 amLisbon Humberto Delgado

Dec 11

LIS8:35 amLisbon Humberto Delgado

36h 59m

1 stop

LAS1:34 pmLas Vegas Harry Reid Intl

$760

Air Transat

Jan 13

LAS2:35 pmLas Vegas Harry Reid Intl

32h 10m

1 stop

LIS6:45 amLisbon Humberto Delgado

Jan 17

LIS8:35 amLisbon Humberto Delgado

22h 07m

1 stop

LAS10:42 pmLas Vegas Harry Reid Intl

$832

United Airlines flights from Las Vegas to Portugal

Our best United Airlines deals on Las Vegas to Portugal flight tickets

United Airlines

Apr 13

LAS6:00 amLas Vegas Harry Reid Intl

19h 45m

2 stops

OPO9:45 amPorto

Apr 19

OPO6:00 amPorto

18h 20m

1 stop

LAS4:20 pmLas Vegas Harry Reid Intl

$757

United Airlines

Apr 13

LAS6:00 amLas Vegas Harry Reid Intl

19h 45m

2 stops

OPO9:45 amPorto

Apr 19

OPO6:00 amPorto

18h 20m

1 stop

LAS4:20 pmLas Vegas Harry Reid Intl

$762

United Airlines

Dec 9

LAS7:40 amLas Vegas Harry Reid Intl

17h 50m

1 stop

OPO9:30 amPorto

Dec 16

OPO6:00 amPorto

25h 42m

3 stops

LAS11:42 pmLas Vegas Harry Reid Intl

$784

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasPorto

LAS Las Vegas Harry Reid Intl - OPO Porto

LASOPO

Las Vegas Harry Reid Intl

Sun 3/7

11:50 pm-12:50 pm

2 stops29h 00m

Porto

Wed 3/17

6:00 am-11:19 am

2 stops36h 19m

$707

Las VegasPorto

LAS Las Vegas Harry Reid Intl - OPO Porto

LASOPO

Las Vegas Harry Reid Intl

Sun 3/7

4:20 pm-3:20 pm

1 stop15h 00m

Porto

Wed 3/17

6:00 am-11:19 am

2 stops36h 19m

$711

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Mon 2/1

9:05 am-9:05 am

1 stop16h 00m

Lisbon Humberto Delgado

Mon 2/22

4:45 pm-8:10 am

2 stops23h 25m

$719

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Mon 2/1

6:48 am-11:50 am

2 stops21h 02m

Lisbon Humberto Delgado

Mon 2/22

8:45 pm-10:00 am

2 stops21h 15m

$727

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Fri 12/4

11:35 pm-6:45 am

1 stop23h 10m

Lisbon Humberto Delgado

Sun 12/20

8:35 am-1:34 pm

1 stop36h 59m

$752

Las VegasPorto

LAS Las Vegas Harry Reid Intl - OPO Porto

LASOPO

Las Vegas Harry Reid Intl

Tue 4/13

6:00 am-9:45 am

2 stops19h 45m

Porto

Mon 4/19

6:00 am-4:20 pm

1 stop18h 20m

$757

Las VegasPorto

LAS Las Vegas Harry Reid Intl - OPO Porto

LASOPO

Las Vegas Harry Reid Intl

Tue 4/13

7:10 am-9:45 am

1 stop18h 35m

Porto

Mon 4/19

6:00 am-4:20 pm

1 stop18h 20m

$757

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Fri 11/27

11:35 pm-6:45 am

1 stop23h 10m

Lisbon Humberto Delgado

Fri 12/11

8:35 am-1:34 pm

1 stop36h 59m

$760

Quickest round-trip

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Mon 2/1

8:55 pm-9:55 pm

1 stop17h 00m

Lisbon Humberto Delgado

Mon 2/22

11:05 am-9:54 pm

1 stop18h 49m

$768

Las VegasLisbon

LAS Las Vegas Harry Reid Intl - LIS Lisbon Humberto Delgado

LASLIS

Las Vegas Harry Reid Intl

Fri 3/19

12:46 pm-10:30 pm

2 stops26h 44m

Lisbon Humberto Delgado

Wed 3/24

7:05 am-12:08 am

2 stops24h 03m

$813

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $634, 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 March instead. Flights to Portugal in March, while not as cheap as those in April, still average around $757.

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 $952 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 $695 on momondo.

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

You could potentially save up to 22% 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

Best Price Found	$259
Fastest flight time	13h 30m
Direct flights	None

The best one-way flight to Portugal from Las Vegas in the past 72 hours is $259. The best round-trip flight deal from Las Vegas to Portugal found on momondo in the last 72 hours is $707.

The fastest flight from Las Vegas to Portugal takes 13h 30m

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?
The number of operators available for flights from Las Vegas Harry Reid Intl Airport to Portugal is 10 as of October 2026.
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
Air France	PriceFrom $493	Free Cancellation	Rating 7.5 1,653 reviews	Search Air France flights
Lufthansa	PriceFrom $500	Free Cancellation	Rating 6.8 8,297 reviews	Search Lufthansa flights
United Airlines	PriceFrom $503	Free Cancellation	Rating 7.3 10,454 reviews	Search United Airlines flights
Air Canada	PriceFrom $504	Free Cancellation	Rating 7.1 11,832 reviews	Search Air Canada flights
Delta	PriceFrom $504	Free Cancellation	Rating 7.8 8,692 reviews	Search Delta flights
British Airways	PriceFrom $505	Free Cancellation	Rating 6.7 8,275 reviews	Search British Airways flights
Iberia	PriceFrom $508	Free Cancellation	Rating 7.0 3,242 reviews	Search Iberia flights
KLM	PriceFrom $571	Free Cancellation	Rating 7.8 1,595 reviews	Search KLM flights
Porter Airlines	PriceFrom $666	Free Cancellation	Rating 8.0 467 reviews	Search Porter Airlines flights
Air Transat	PriceFrom $682	Free Cancellation	Rating 7.7 584 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.

An easier way to manage your Portugal trip

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Popular cities

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $364

Flights to Portofrom $408

Flights to Funchalfrom $406

Flights to Farofrom $568

Flights to Ponta Delgadafrom $438

Flights to Lajesfrom $310

Flights to Hortafrom $750

Flights to Pico Islandfrom $664

Flights to Porto Santofrom $888

Flights to Velasfrom $688

Cheap flights from Las Vegas to Portugal from $259

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 11/24. 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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Air Transat flights from Las Vegas to Portugal

Our best Air Transat deals on Las Vegas to Portugal flight tickets

United Airlines flights from Las Vegas to Portugal

Our best United Airlines deals on Las Vegas to Portugal flight tickets

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See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

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

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

What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Portugal?

What airlines fly to Portugal?

Cheap Las Vegas to Portugal flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Las Vegas to Portugal

Best airlines flying from Las Vegas to Portugal

Compare and see reviews for airlines that fly from Las Vegas to Portugal with momondo

Why use momondo?

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Las Vegas flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year