How long is the flight from Dayton to Porto?

For as low as $1,083, United Airlines can have you in Porto from Dayton in 14h 58m. The distance from Dayton to Porto is about 3829 mi.

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 time of day to fly from DAY to OPO?

When flying from Dayton to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Dayton-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dayton-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dayton-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Dayton-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dayton-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Dayton to Porto?

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

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

Yes. Cheapflights offers flight deals from Dayton 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.

$1,083+ Cheap Flights from Dayton to Porto

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Cheap flight deals from Dayton to Porto

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Cheapest flights from Dayton to Porto
Explore the most affordable flight options available from Dayton to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.

Tue 12/81:32 pm -

2 stops14h 58m

Fri 12/116:00 am -

2 stops22h 29m

Deal found 10/7

$1,083

Find flight deals from Dayton to Porto

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,083 (United Airlines)

Provider with most accurate pricing for Dayton-Porto flight deals.

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From Dayton to Porto

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Price

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DaytonPorto

DAY Dayton - OPO Porto

DAYOPO

Dayton

Tue 12/8

1:32 pm-9:30 am

2 stops14h 58m

Porto

Fri 12/11

6:00 am-11:29 pm

2 stops22h 29m

$1,083

DaytonPorto

DAY Dayton - OPO Porto

DAYOPO

Dayton

Wed 12/9

9:40 am-9:30 am

2 stops18h 50m

Porto

Fri 12/11

12:35 pm-10:15 am

2 stops26h 40m

$1,084

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/7

Sorted by cheapest first

Compare providers for flights from Dayton to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dayton to Porto in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Dayton-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dayton-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dayton-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Dayton-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dayton-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dayton to Porto

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

DAY-OPO

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.

Related info for your journey

How long is the flight from Dayton to Porto?
For as low as $1,083, United Airlines can have you in Porto from Dayton in 14h 58m. The distance from Dayton to Porto is about 3829 mi.
Can I find deals for flights from Dayton to Porto that include hotel bookings?
Yes. In addition to deals on Dayton to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dayton to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dayton to Porto.
Can I find deals for business class flights from Dayton to Porto?
Yes. Cheapflights offers flight deals from Dayton 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.

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$1,083+ Cheap flights from Dayton (DAY) to Porto (OPO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dayton 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 Dayton to Porto

Cheapest flights from Dayton to PortoExplore the most affordable flight options available from Dayton to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.

Explore the most affordable flight options available from Dayton to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.

Best flights from Dayton to PortoDiscover carefully curated flight deals from Dayton to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.

Discover carefully curated flight deals from Dayton to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.

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Use the filters below to find and compare flights from Dayton to Porto that are best for you.

Compare providers for flights from Dayton to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dayton to Porto in October.

Best time to book a flight from Dayton to Porto

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

Related info for your journey

How long is the flight from Dayton to Porto?

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

How can I find direct flights from Dayton to Porto?

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

Traveling to a place near Porto?

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Complete your trip

Complete your trip to Porto by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dayton to Porto by cabin class

Find flights from Dayton to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dayton and Porto flights

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Cheapest flights from Dayton to Porto
Explore the most affordable flight options available from Dayton to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.

Best flights from Dayton to Porto
Discover carefully curated flight deals from Dayton to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.