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$662+ Cheap flights from Dayton (DAY) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — OPO
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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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 November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/13. 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.
Thu 11/272:50 pmDAY - OPO
2 stops13h 40mUnited Airlines
Wed 12/36:00 amOPO - DAY
2 stops19h 09mUnited Airlines
Deal found 11/13$688
This KAYAK deal was found by Cheapflights users on 11/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/282:50 pmDAY - OPO
2 stops27h 50mLufthansa
Tue 12/21:45 pmOPO - DAY
2 stops38h 45mLufthansa
Deal found 11/13$701
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Thu 11/272:50 pmDAY - OPO
2 stops13h 40mUnited Airlines
Tue 12/212:30 pmOPO - DAY
2 stops36h 39mUnited Airlines
Deal found 11/13$707
This KAYAK deal was found by Cheapflights users on 11/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:58 pmDAY - OPO
2 stops36h 42mLufthansa
Wed 12/36:00 amOPO - DAY
2 stops22h 30mLufthansa
Deal found 11/13$1,040
This KAYAK deal was found by Cheapflights users on 11/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:58 pmDAY - OPO
2 stops40h 17mLufthansa
Tue 12/212:30 pmOPO - DAY
2 stops40h 00mLufthansa
Deal found 11/13$1,060
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/291:22 pmDAY - OPO
2 stops16h 08mDelta
Mon 12/111:25 amOPO - DAY
2 stops35h 22mDelta
Deal found 11/13$1,092
This Ovago deal was found by Cheapflights users on 11/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:45 pmDAY - OPO
2 stops14h 40mLufthansa
Sun 11/301:45 pmOPO - DAY
2 stops34h 16mLufthansa
Deal found 11/13$1,141
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:22 pmDAY - OPO
2 stops16h 03mDelta
Sun 11/3011:15 amOPO - DAY
2 stops35h 32mDelta
Deal found 11/13$1,301
This KAYAK deal was found by Cheapflights users on 11/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:50 pmDAY - OPO
2 stops15h 50mMultiple Airlines
Thu 1/18:40 amOPO - DAY
2 stops20h 04mMultiple Airlines
Deal found 11/13$1,470
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:22 pmDAY - OPO
2 stops16h 08mDelta
Sat 11/2911:15 amOPO - DAY
2 stops28h 19mDelta
Deal found 11/13$1,488
This KLM deal was found by Cheapflights users on 11/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:19 amDAY - OPO
2 stops18h 11mKLM
Mon 12/111:15 amOPO - DAY
2 stops35h 32mKLM
Deal found 11/13$1,500

Cheap 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 November 13, 2025.

Round-trip from

$867
(United Airlines)

One-way from

$662
(KLM)
From Dayton to Porto
Search Deals
One-way flight 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 November 13, 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

Fri 11/28

10:27 am-9:30 am

2 stops18h 03m

Porto

Wed 12/3

6:00 am-4:51 pm

2 stops15h 51m

$688

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 11/27

2:50 pm-9:30 am

2 stops13h 40m

Porto

Wed 12/3

6:00 am-8:09 pm

2 stops19h 09m

$688

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 11/28

11:43 am-9:30 am

2 stops16h 47m

Porto

Mon 12/1

12:30 pm-8:09 pm

2 stops36h 39m

$707

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 3/27

11:00 am-9:30 am

2 stops18h 30m

Porto

Tue 3/31

6:00 am-11:29 pm

2 stops22h 29m

$867

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 5/7

10:20 am-9:45 am

2 stops18h 25m

Porto

Mon 5/18

6:00 am-11:29 pm

2 stops46h 29m

$1,007

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Wed 11/26

7:45 pm-3:25 pm

2 stops14h 40m

Porto

Sun 11/30

1:45 pm-7:01 pm

2 stops34h 16m

$1,141

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 11/27

1:22 pm-10:25 am

2 stops16h 03m

Porto

Sun 11/30

11:15 am-5:47 pm

2 stops35h 32m

$1,301

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 11/28

1:22 pm-10:30 am

2 stops16h 08m

Porto

Sun 11/30

11:15 am-5:47 pm

2 stops35h 32m

$1,301

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 11/27

2:50 pm-11:40 am

2 stops15h 50m

Porto

Thu 1/1

8:40 am-11:44 pm

2 stops20h 04m

$1,470

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 11/27

1:22 pm-10:30 am

2 stops16h 08m

Porto

Sat 11/29

11:15 am-10:34 am

2 stops28h 19m

$1,488

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 12 results
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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, November is the cheapest month in which you can book a flight from Dayton to Porto (average of $586). Flying from Dayton to Porto in June is currently the most expensive (average of $975). 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 $688, United Airlines can have you in Porto from Dayton in 18h 03m. 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.

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

    Currently, November is the cheapest month in which you can book a flight from Dayton to Porto (average of $586). Flying from Dayton to Porto in June is currently the most expensive (average of $975). 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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