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.

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.

$979+ Flights from Dayton to Porto

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Dayton to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dayton to Porto

Round-trip from	$979 (United Airlines)

From Dayton to Porto

Search Deals

Find flight deals from Dayton to Porto

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 agosto 14, 2025.

mié. 9/2411:42 amDAY - OPO

2 stops16h 38mUnited Airlines

mié. 10/812:05 pmOPO - DAY

2 stops16h 39mUnited Airlines

Deal found 8/13

$979

mar. 8/262:00 pmDAY - OPO

2 stops14h 45mUnited Airlines

vie. 8/299:00 amOPO - DAY

2 stops14h 48mUnited Airlines

Deal found 8/12

$1,797

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 agosto 14, 2025.

mié. 9/2411:42 amDAY - OPO

2 stops16h 38mUnited Airlines

mié. 10/812:05 pmOPO - DAY

2 stops16h 39mUnited Airlines

Deal found 8/13

$979

mar. 8/262:00 pmDAY - OPO

2 stops14h 45mUnited Airlines

vie. 8/299:00 amOPO - DAY

2 stops14h 48mUnited Airlines

Deal found 8/12

$1,797

Last-minute flights from Dayton to Porto
Discover last-minute flight deals from Dayton to Porto. Data last updated agosto 14, 2025 and is based on user searches.

mar. 8/262:00 pmDAY - OPO

2 stops14h 45mUnited Airlines

vie. 8/299:00 amOPO - DAY

2 stops14h 48mUnited Airlines

Deal found 8/12

$1,797

mié. 9/2411:42 amDAY - OPO

2 stops16h 38mUnited Airlines

mié. 10/812:05 pmOPO - DAY

2 stops16h 39mUnited Airlines

Deal found 8/13

$979

Fly from

Fly to

Route

Depart

Return

Price

DaytonPorto

DAY - OPO

DAYOPO

Dayton

mié. 9/24

11:42 am-9:20 am

2 stops16h 38m

Porto

mié. 10/8

12:05 pm-11:44 pm

2 stops16h 39m

$979

DaytonPorto

DAY - OPO

DAYOPO

Dayton

mar. 8/26

2:00 pm-9:45 am

2 stops14h 45m

Porto

vie. 8/29

9:00 am-6:48 pm

2 stops14h 48m

$1,797

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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.

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 Dayton to Porto

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

Currently, January is the cheapest month in which you can book a flight from Dayton to Porto (average of $523). Flying from Dayton to Porto in June is currently the most expensive (average of $1,029). 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.

Related info for your journey

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.
What is the cheapest month to book a flight from Dayton to Porto?
Currently, January is the cheapest month in which you can book a flight from Dayton to Porto (average of $523). Flying from Dayton to Porto in June is currently the most expensive (average of $1,029). 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.

See more FAQs

Aveiro

Arcos de Valdevez

Coimbra

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dayton to Porto

Other flights to Porto

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$979+ 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 9/24. 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

Round-trip from

Find 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 agosto 14, 2025.

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 agosto 14, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Dayton to Porto

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

Related info for your journey

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

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?

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

Traveling to a place near Porto?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dayton to Porto

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

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 agosto 14, 2025.