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Cheap flights from Dayton to Porto from $398

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dayton to Porto departing on 10/31. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Dayton to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:45 pm - 9:30 am
DAY
-
OPO
15h 45m
2 stops
United Airlines Logo
6:00 am - 8:31 pm
OPO
-
DAY
19h 31m
2 stops
$749United Airlines
Tue, Oct 27 - Thu, Nov 5
United Airlines Logo
5:30 am - 9:30 am
DAY
-
OPO
24h 00m
2 stops
United Airlines Logo
6:00 am - 1:04 pm
OPO
-
DAY
36h 04m
2 stops
$754United Airlines
Tue, Oct 27 - Fri, Nov 6
United Airlines Logo
1:45 pm - 9:30 am
DAY
-
OPO
15h 45m
2 stops
United Airlines Logo
12:35 pm - 11:03 am
OPO
-
DAY
27h 28m
2 stops
$758United Airlines
Tue, Oct 27 - Tue, Nov 10
United Airlines Logo
7:45 pm - 9:30 am
DAY
-
OPO
33h 45m
2 stops
United Airlines Logo
6:00 am - 8:31 pm
OPO
-
DAY
19h 31m
2 stops
$760United Airlines
Sat, Oct 31 - Thu, Nov 5
United Airlines Logo
7:45 pm - 9:30 am
DAY
-
OPO
33h 45m
2 stops
United Airlines Logo
6:00 am - 11:03 am
OPO
-
DAY
34h 03m
2 stops
$765United Airlines
Sat, Oct 31 - Fri, Nov 6
United Airlines Logo
7:45 pm - 9:30 am
DAY
-
OPO
33h 45m
2 stops
United Airlines Logo
12:35 pm - 11:44 pm
OPO
-
DAY
16h 09m
2 stops
$769United Airlines
Sat, Oct 31 - Tue, Nov 10
Delta Logo
6:44 pm - 10:35 am
DAY
-
OPO
34h 51m
2 stops
Delta Logo
11:30 am - 11:14 pm
OPO
-
DAY
40h 44m
2 stops
$771Delta
Sun, Nov 1 - Tue, Nov 10
Delta Logo
6:44 pm - 3:25 pm
DAY
-
OPO
16h 41m
2 stops
Delta Logo
5:00 am - 10:02 pm
OPO
-
DAY
22h 02m
2 stops
$804Delta
Tue, Oct 27 - Sat, Nov 7
United Airlines Logo
1:45 pm - 9:30 am
DAY
-
OPO
15h 45m
2 stops
United Airlines Logo
12:35 pm - 11:44 pm
OPO
-
DAY
16h 09m
2 stops
$808United Airlines
Thu, Oct 29 - Tue, Nov 10
Delta Logo
6:44 pm - 10:30 pm
DAY
-
OPO
46h 46m
2 stops
Delta Logo
5:00 am - 10:02 pm
OPO
-
DAY
22h 02m
2 stops
$810Delta
Mon, Nov 2 - Sat, Nov 7

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United Airlines flights from Dayton to Porto

Our best United Airlines deals on Dayton to Porto flight tickets
United Airlines
Oct 27
DAY5:30 amDayton
24h 00m
2 stops
OPO9:30 amPorto
Nov 11
OPO6:00 amPorto
19h 31m
2 stops
DAY8:31 pmDayton
$749
United Airlines
Oct 27
DAY5:30 amDayton
24h 00m
2 stops
OPO9:30 amPorto
Nov 6
OPO6:00 amPorto
36h 04m
2 stops
DAY1:04 pmDayton
$754
United Airlines
Oct 27
DAY1:45 pmDayton
15h 45m
2 stops
OPO9:30 amPorto
Nov 10
OPO12:35 pmPorto
27h 28m
2 stops
DAY11:03 amDayton
$758

Delta flights from Dayton to Porto

Our best Delta deals on Dayton to Porto flight tickets
Delta
Nov 1
DAY6:44 pmDayton
34h 51m
2 stops
OPO10:35 amPorto
Nov 10
OPO11:30 amPorto
40h 44m
2 stops
DAY11:14 pmDayton
$771
Delta
Oct 27
DAY6:44 pmDayton
16h 41m
2 stops
OPO3:25 pmPorto
Nov 7
OPO5:00 amPorto
22h 02m
2 stops
DAY10:02 pmDayton
$804
Delta
Nov 2
DAY6:44 pmDayton
46h 46m
2 stops
OPO10:30 pmPorto
Nov 7
OPO5:00 amPorto
22h 02m
2 stops
DAY10:02 pmDayton
$810

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 June 28, 2026.
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

Cheapest round-trip

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 10/27

1:45 pm-9:30 am

2 stops15h 45m

Porto

Thu 11/5

6:00 am-8:31 pm

2 stops19h 31m

$749

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 10/27

5:30 am-9:30 am

2 stops24h 00m

Porto

Fri 11/6

6:00 am-1:04 pm

2 stops36h 04m

$754

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 10/27

1:45 pm-9:30 am

2 stops15h 45m

Porto

Tue 11/10

12:35 pm-11:03 am

2 stops27h 28m

$758

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sat 10/31

7:45 pm-9:30 am

2 stops33h 45m

Porto

Thu 11/5

6:00 am-8:31 pm

2 stops19h 31m

$760

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sat 10/31

7:45 pm-9:30 am

2 stops33h 45m

Porto

Fri 11/6

6:00 am-11:03 am

2 stops34h 03m

$765

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sat 10/31

7:45 pm-9:30 am

2 stops33h 45m

Porto

Tue 11/10

12:35 pm-11:44 pm

2 stops16h 09m

$769

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sun 11/1

6:44 pm-10:35 am

2 stops34h 51m

Porto

Tue 11/10

11:30 am-11:14 pm

2 stops40h 44m

$771

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 10/27

6:44 pm-3:25 pm

2 stops16h 41m

Porto

Sat 11/7

5:00 am-10:02 pm

2 stops22h 02m

$804
Quickest round-trip

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 10/29

1:45 pm-9:30 am

2 stops15h 45m

Porto

Tue 11/10

12:35 pm-11:44 pm

2 stops16h 09m

$808

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Mon 11/2

6:44 pm-10:30 pm

2 stops46h 46m

Porto

Sat 11/7

5:00 am-10:02 pm

2 stops22h 02m

$810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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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 is the cheapest airline that flies from Dayton to Porto?

United Airlines is the most popular carrier operating from Dayton to Porto

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

18h 45m

Direct flights

None
The fastest flight from Dayton to Porto takes 18h 45m
There are no direct flights from Dayton to Porto. There are no popular flight routes from Dayton to Porto.
Search flight deals

Frequently asked questions about flying from Dayton to Porto

  • 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 18h 45m.

  • 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
Lamego
Esposende
Chaves
Pinhao
Guimarães
Arcos de Valdevez
Espinho
Ponte de Lima
Viseu
Curia
Mesao Frio
Penafiel
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.

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