LAS - OPO

Find cheap flights from Las Vegas to Porto

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Porto, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Las Vegas and Porto. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $684 (round-trip)
Shortest trip • 13h 47m (one-way)
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When to travel
Cheapest • 45% price drop
Most popular
Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Las Vegas to Porto (LAS-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Las Vegas to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Las Vegas to Porto

Multiple Airlines Logo
LAS
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OPO
5352 mimulti-stop
Multiple Airlines Logo
OPO
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LAS
5352 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Las Vegas to Porto flights

Get data-powered insights and trends into flights from Las Vegas to Porto to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Las Vegas to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Las Vegas to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Las Vegas to Porto is January, where tickets cost $503 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is $1,314 and $1,263 respectively.

Good to know

Low seasonJanuary
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly with an average 37% increase in price.

When to book flights from Las Vegas to Porto

Are your dates flexible? Find out the best times to travel from Las Vegas to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Las Vegas to Porto

  • Do I need a passport to fly between Las Vegas and Porto?

    Yes, you’ll need a passport to travel to Porto from Las Vegas.

  • Which aircraft models fly most regularly from Las Vegas to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Las Vegas to Porto?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Las Vegas and Porto, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Las Vegas to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Las Vegas to Porto are Delta and KLM. With an average price for the route of $1,191 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $989 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Las Vegas to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Las Vegas to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Las Vegas to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Las Vegas is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Las Vegas to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Las Vegas with another airline. Booking your flights between Las Vegas and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Las Vegas to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Las Vegas to Porto

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Las Vegas to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8457 reviews
7.8Entertainment
7.9Comfort
8.1Boarding
7.2Food
8.5Crew
Airline reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

10.0 ExcellentIrmara, May 2026
MCO - BOS
Read more Delta reviews

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Empty seats next to me - wish it had been for a longer flight!!

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Some crew were unfriendly or in some cases just straight up rude.

Everything you need to know for your flight from Las Vegas to Porto

Information on your arrival and departure airports