Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Dayton to Porto from $506

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Dayton to Porto departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Dayton to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:50 am - 11:40 am
DAY
-
OPO
20h 50m2 stops
United Airlines Logo
6:00 am - 2:17 pm
OPO
-
DAY
37h 17m2 stops
$506United Airlines
Fri, Jan 23 - Tue, Jan 27

momondo Fare Finder

 
Customize your flight search to find flights from Dayton to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Dayton to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 1/23

9:50 am-11:40 am

2 stops20h 50m

Porto

Tue 1/27

6:00 am-2:17 pm

2 stops37h 17m

$506

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto from

How to get the cheapest flight ticket from Dayton to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to Porto?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Porto from Dayton according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 3 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

When to book flights from Dayton to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Dayton to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dayton to Porto (DAY to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dayton to Porto

Fastest flight time

20h 50m

Direct flights

None
The fastest flight from Dayton to Porto takes 20h 50m
There are no direct flights from Dayton to Porto. There are no popular flight routes from Dayton to Porto.
Search flight deals

  • How far is Dayton to Porto by plane?

    Dayton and Porto are 3837.7 mi apart from one another. By plane, this route typically takes 20h 50m.

  • When did momondo last update prices for flights from Dayton Airport to Porto Airport?

    Prices for flights from Dayton Airport to Porto Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Dayton Airport to Porto Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Dayton Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Guimarães
Esposende
Lamego
Chaves
Viseu
Espinho
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Dayton to Porto?

It is quick and easy to find Dayton to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

Can I find flights from Dayton to Porto with flexible booking policies on momondo?

momondo does allow users to show only those flights to Porto from Dayton which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Dayton to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Dayton to Porto.

I’m not ready to book a flight from Dayton to Porto right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Dayton to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 1/16
Fri 1/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal