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$500+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — OPO
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap flight deals from Dayton to Porto

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 December 26, 2025.

This FlightHub deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/242:52 pmDAY - OPO
2 stops16h 58mLufthansa
Sat 1/3112:30 pmOPO - DAY
2 stops36h 52mLufthansa
Deal found 12/25$500
This United Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:50 amDAY - OPO
2 stops20h 50mUnited Airlines
Tue 2/106:00 amOPO - DAY
2 stops21h 02mUnited Airlines
Deal found 12/24$506

Find flight deals from Dayton to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Dayton (DAY) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$486
(United Airlines)
Provider with most accurate pricing for Dayton-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dayton-Porto flights.
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From Dayton to Porto
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Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 26, 2025.
Use the filters below to find and compare flights from Dayton to Porto that are best for you.

Fly from

Dayton

Fly to

Porto

Route

Depart

Return

Price

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sat 1/24

2:52 pm-12:50 pm

2 stops16h 58m

Porto

Sat 1/31

12:30 pm-8:22 pm

2 stops36h 52m

$500

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 2/6

9:50 am-11:40 am

2 stops20h 50m

Porto

Tue 2/10

6:00 am-10:02 pm

2 stops21h 02m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

  • 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.
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, February is the cheapest month in which you can book a flight from Dayton to Porto (average of $495). Flying from Dayton to Porto in December is currently the most expensive (average of $1,117). 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

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.

  • How long is the flight from Dayton to Porto?

    For as low as $486, United Airlines can have you in Porto from Dayton in 14h 20m. The distance from Dayton to Porto is about 3829 mi. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from Dayton to Porto (average of $495). Flying from Dayton to Porto in December is currently the most expensive (average of $1,117). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra
Vila Nova de Gaia

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