$403 Cheap Flights from Las Vegas (LAS) to Porto (OPO)

View $403 flight on Mon, Feb 2, 2026Opens in a new window

Popular airlines from Harry Reid Intl. Airport (LAS) to Porto Airport (OPO)

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

Prices were available within the past 7 days and start at $403 for one-way flights and $481 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Jan 15 - Mon, Jan 19
LAS
Las Vegas
OPO
Porto
$481 Roundtrip, found 1 day ago
$481
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Jan 15 from Las Vegas to Porto, returning Mon, Jan 19, priced at $481 found 1 day ago
Delta
Thu, Jan 29 - Thu, Feb 12
LAS
Las Vegas
OPO
Porto
$481 Roundtrip, found 1 day ago
$481
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jan 29 from Las Vegas to Porto, returning Thu, Feb 12, priced at $481 found 1 day ago
Delta
Thu, Dec 11 - Tue, Dec 16
LAS
Las Vegas
OPO
Porto
$483 Roundtrip, just found
$483
Roundtrip
just found
Select Delta flight, departing Thu, Dec 11 from Las Vegas to Porto, returning Tue, Dec 16, priced at $483 just found
Air Canada
Sun, Jan 18 - Tue, Jan 27
LAS
Las Vegas
OPO
Porto
$484 Roundtrip, found 22 hours ago
$484
Roundtrip
found 22 hours ago
Select Air Canada flight, departing Sun, Jan 18 from Las Vegas to Porto, returning Tue, Jan 27, priced at $484 found 22 hours ago
Lufthansa
Wed, Feb 11 - Wed, Feb 18
LAS
Las Vegas
OPO
Porto
$492 Roundtrip, found 1 day ago
$492
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Wed, Feb 11 from Las Vegas to Porto, returning Wed, Feb 18, priced at $492 found 1 day ago
Swiss International Air Lines
Thu, Jan 22 - Thu, Jan 29
LAS
Las Vegas
OPO
Porto
$496 Roundtrip, found 22 hours ago
$496
Roundtrip
found 22 hours ago
Select Swiss International Air Lines flight, departing Thu, Jan 22 from Las Vegas to Porto, returning Thu, Jan 29, priced at $496 found 22 hours ago
United
Sun, Feb 8 - Sun, Feb 15
LAS
Las Vegas
OPO
Porto
$500 Roundtrip, found 2 days ago
$500
Roundtrip
found 2 days ago
Select United flight, departing Sun, Feb 8 from Las Vegas to Porto, returning Sun, Feb 15, priced at $500 found 2 days ago
Iberia
Sun, Jan 18 - Tue, Jan 27
LAS
Las Vegas
OPO
Porto
$501 Roundtrip, found 22 hours ago
$501
Roundtrip
found 22 hours ago
Select Iberia flight, departing Sun, Jan 18 from Las Vegas to Porto, returning Tue, Jan 27, priced at $501 found 22 hours ago
American Airlines
Thu, Feb 12 - Wed, Feb 18
LAS
Las Vegas
OPO
Porto
$509 Roundtrip, found 23 hours ago
$509
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Thu, Feb 12 from Las Vegas to Porto, returning Wed, Feb 18, priced at $509 found 23 hours ago
KLM
Thu, Feb 12 - Wed, Feb 18
LAS
Las Vegas
OPO
Porto
$545 Roundtrip, found 23 hours ago
$545
Roundtrip
found 23 hours ago
Select KLM flight, departing Thu, Feb 12 from Las Vegas to Porto, returning Wed, Feb 18, priced at $545 found 23 hours ago

Find the cheapest month to fly from Las Vegas (LAS) to Porto (OPO)

November is typically the cheapest month to fly

From $563 - $1,360 per traveler.

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Get a cheap one-way flight from $403 or cheap return flight from $481 from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Traveling in January is a good way to save, as it's the cheapest month for flights between LAS and OPO. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LAS to OPO flight.
How many flights per day from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
You'll need to take a flight with a layover if you're traveling from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from LAS to OPO?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To avoid possible delays on the Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Waiting until just before your departure to book your flight from LAS to OPO generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Keep your travel schedule open for a better chance of landing a bargain.
Is it cheaper to book a LAS to OPO flight and hotel package?
Compared with arranging flights and hotels separately, booking a LAS to OPO flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the stress out of planning your trip. Just secure your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most cases, you're able to reschedule or cancel your LAS to OPO flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air Europa, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Porter Airlines, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United
Roundtrip price
$481
Distance
5356 mi

Book with confidence

Las Vegas to Porto Flights

The cheapest times to fly from Las Vegas to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Las Vegas to Porto are during the month of January. You can find some of the cheapest flights from Las Vegas to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Las Vegas to Porto

Sunday is one of the best days to book for cheap flights from Las Vegas to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Las Vegas to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Las Vegas to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $403 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Las Vegas to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Las Vegas to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Las Vegas to Porto Flights

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*Available to One Key members.