What are the cheapest airlines flying from Las Vegas to Porto round-trip?

Our cheapest airline available from Las Vegas to Porto is Delta. Our recent data shows that you can find tickets from as low as $641 on this airline. An additional option worth looking into is United Airlines, starting at $665. Delta is currently priced 41% below the average price you’ll pay for this route.

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

Travelers seeking maximum savings on their Las Vegas to Porto flight should consider departing on Sunday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What is the cheapest day to fly round-trip from Las Vegas to Porto?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 28%.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, February can be a great choice for travel to Porto. Flights to Porto from Las Vegas in February are about $1,103 on average during February, but can be found for as low as $665.

Can I find deals for flights from Las Vegas to Porto that include hotel bookings?

Yes. In addition to deals on Las Vegas to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Las Vegas to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Las Vegas to Porto.

Can I find deals for business class flights from Las Vegas to Porto?

Yes. Cheapflights offers flight deals from Las Vegas to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Las Vegas to Porto

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Cheap flight deals from Las Vegas to Porto

Popular in	August
Cheapest in	February
Average price	$1,143

Highest demand for flights based on searches. 20% potential increase in price ($292 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Best time to book a flight from Las Vegas to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Las Vegas with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Las Vegas to Porto?

Currently, January is the cheapest month in which you can book a flight from Las Vegas to Porto (average of $523). Flying from Las Vegas to Porto in June is currently the most expensive (average of $1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LAS to OPO?

Unlike in the morning, when flights are generally more expensive, you can save up to 25% on flights from Las Vegas to Porto by exploring options for tickets at noon.

Reviews of airlines servicing Porto

See what other customers who have flown with Delta and United Airlines from Las Vegas to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,954 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,954 reviews

Delta

8.0

Very good

7,954 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,929 reviews

Delta

8.0

Very good

7,954 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Las Vegas to Porto round-trip?
Our cheapest airline available from Las Vegas to Porto is Delta. Our recent data shows that you can find tickets from as low as $641 on this airline. An additional option worth looking into is United Airlines, starting at $665. Delta is currently priced 41% below the average price you’ll pay for this route.
Can I find deals for flights from Las Vegas to Porto that include hotel bookings?
Yes. In addition to deals on Las Vegas to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Las Vegas to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Las Vegas to Porto.
Can I find deals for business class flights from Las Vegas to Porto?
Yes. Cheapflights offers flight deals from Las Vegas to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Las Vegas to Porto?
Currently, January is the cheapest month in which you can book a flight from Las Vegas to Porto (average of $523). Flying from Las Vegas to Porto in June is currently the most expensive (average of $1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 2 airlines flying from Las Vegas to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$641	Average$1,268	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$665	Average$1,195	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Las Vegas (LAS) to Porto (OPO)

Find cheap flights from Las Vegas to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Las Vegas to Porto

Popular in

Cheapest in

Average price

Best time to book a flight from Las Vegas to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Las Vegas with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Las Vegas to Porto?

What is the cheapest time of day to fly from LAS to OPO?

Reviews of airlines servicing Porto

See what other customers who have flown with Delta and United Airlines from Las Vegas to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Las Vegas to Porto round-trip?

Can I find deals for flights from Las Vegas to Porto that include hotel bookings?

How can I find direct flights from Las Vegas to Porto?

Can I find deals for business class flights from Las Vegas to Porto?

What is the cheapest month to book a flight from Las Vegas to Porto?

Traveling to a place near Porto?

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Alternative routes for Las Vegas to Porto

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Top 2 airlines flying from Las Vegas to Porto

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