Which airports can I use when flying from Dayton to Porto?

Flights from Dayton to Porto usually depart from Dayton (DAY) and arrive at Porto (OPO).

What cabin classes can I book on flights from Dayton to Porto?

Only Economy Class is available on flights from Dayton to Porto.

Can I save money by using flexible dates for flights from Dayton to Porto?

On the Dayton to Porto route, being flexible with your departure day can save you up to 68%. Saturday is the cheapest day at $726 round-trip on average, while Thursday is the most expensive at $2,236: a $1,510 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

What popular places can I visit in Porto?

Some of the most popular sights in Porto are Ribeira Square, Mercado do Bolhão and Avenida dos Aliados. These are among the most viewed places in Porto on KAYAK.

Do I need a passport to fly from Dayton to Porto?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Dayton to Porto changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $634 to $1,650. That means the highest observed fare was about 3x higher than the lowest one.

How are flight prices from Dayton to Porto looking right now?

One-way fares from Dayton to Porto are currently lower than usual. Average one-way flight prices are about $553, which is 28% below the typical average for this route.

What is the time difference between Dayton and Porto?

Porto is 5 hours ahead of Dayton (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Porto Airport (OPO)?

Porto Airport (OPO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include: • Klass Wagen • Drive on Holiday • GREEN MOTION • Goldcar Rental SP • SURPRICE CAR RENTAL

What is the cheapest airline to fly from Dayton to Porto?

KLM ($634) and United Airlines ($711) are the cheapest airlines to fly round-trip from Dayton to Porto according to KAYAK data over the last 5 days.

$553 CHEAP FLIGHTS from Dayton to Porto (DAY - OPO)

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Cheapest round-trip

$634

Typical prices: $1,020-$2,236

KLM

Thu 11/1Thu 11/8

DAY - OPO • 2 stops

Cheapest one-way

$553

Typical prices: $397-$1,758

United Airlines

Sat 12/1

DAY - OPO • 2 stops

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Flight Deals

Cheap Flights from Dayton to Porto (DAY-OPO)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Dayton to Porto

Sun, Nov 1 - Sun, Nov 8

6:00 am - 8:15 amDAY Dayton-OPO Porto

21h 15m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

5:00 am - 11:16 pmOPO Porto-DAY Dayton

23h 16m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$634KLM

Sat, Oct 31 - Sat, Nov 7

2:26 pm - 9:30 amDAY Dayton-OPO Porto

15h 04m2 stops Chicago O'Hare Intl Newark

6:00 am - 8:49 pmOPO Porto-DAY Dayton

19h 49m2 stops Frankfurt am Main Chicago O'Hare Intl

$711United Airlines

Sat, Oct 17 - Sat, Oct 24

11:32 am - 6:50 amDAY Dayton-OPO Porto

14h 18m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:00 am - 10:04 amOPO Porto-DAY Dayton

33h 04m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$767United Airlines

Thu, Oct 29 - Thu, Nov 5

7:55 pm - 9:30 amDAY Dayton-OPO Porto

33h 35m2 stops Washington, D.C. Dulles Intl Newark

12:35 pm - 11:38 pmOPO Porto-DAY Dayton

40h 03m2 stops Newark Chicago O'Hare Intl

$822United Airlines

Wed, Dec 9 - Fri, Dec 11

9:40 am - 9:30 amDAY Dayton-OPO Porto

18h 50m2 stops Washington, D.C. Dulles Intl Newark

12:35 pm - 10:15 amOPO Porto-DAY Dayton

26h 40m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,085United Airlines

Sat, Oct 17 - Sat, Oct 24

2:20 pm - 9:45 amDAY Dayton-OPO Porto

14h 25m2 stops Chicago O'Hare Intl Newark

7:00 am - 6:58 pmOPO Porto-DAY Dayton

16h 58m3 stops Lisbon Humberto Delgado Newark Washington, D.C. Dulles Intl

$1,285United Airlines

Sat, Oct 31 - Sat, Nov 7

2:26 pm - 9:30 amDAY Dayton-OPO Porto

15h 04m2 stops Chicago O'Hare Intl Newark

8:30 am - 11:38 pmOPO Porto-DAY Dayton

20h 08m3 stops Lisbon Humberto Delgado Washington, D.C. Dulles Intl Chicago O'Hare Intl

$1,337United Airlines

Booking Insights

Price, demand and travel trends for Dayton to Porto flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Dayton to Porto with more confidence.

Prices

Airlines

How much is a round-trip flight from Dayton to Porto?

Round-trip flights from Dayton to Porto start at $634. Prices are below average for this route right now, with typical round-trip fares ranging from $1,020 to $2,236. The lowest price found in the past 5 days was $634 on KLM.

Find deals

Cheapest flight	$553

Flight from Dayton to Porto

When to book flights from Dayton to Porto

Are your dates flexible? Find out the best times to travel from Dayton to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Dayton to Porto?
Flights from Dayton to Porto usually depart from Dayton (DAY) and arrive at Porto (OPO).
What cabin classes can I book on flights from Dayton to Porto?
Only Economy Class is available on flights from Dayton to Porto.
Can I save money by using flexible dates for flights from Dayton to Porto?
On the Dayton to Porto route, being flexible with your departure day can save you up to 68%. Saturday is the cheapest day at $726 round-trip on average, while Thursday is the most expensive at $2,236: a $1,510 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
What popular places can I visit in Porto?
Some of the most popular sights in Porto are Ribeira Square, Mercado do Bolhão and Avenida dos Aliados. These are among the most viewed places in Porto on KAYAK.
Do I need a passport to fly from Dayton to Porto?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Dayton to Porto changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $634 to $1,650. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from Dayton to Porto looking right now?
One-way fares from Dayton to Porto are currently lower than usual. Average one-way flight prices are about $553, which is 28% below the typical average for this route.
What is the time difference between Dayton and Porto?
Porto is 5 hours ahead of Dayton (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Porto Airport (OPO)?
Porto Airport (OPO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:
• Klass Wagen
• Drive on Holiday
• GREEN MOTION
• Goldcar Rental SP
• SURPRICE CAR RENTAL

If your dates can be flexible, aim for a Saturday departure instead of Thursday. On this route, Saturday flights average $726 - about $1,510 less than Thursday (68% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.
- Opo Hotel Porto Aeroporto

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DAY - OPO

$553 Find Cheap Flights from Dayton to Porto - Compare and Save

Everything you should know

Cheap Flights from Dayton to Porto (DAY-OPO)

Recent round-trip flight deals from Dayton to Porto

Recent one-way flight deals from Dayton to Porto

Recent last minute flight deals from Dayton to Porto

Price, demand and travel trends for Dayton to Porto flights

How much is a round-trip flight from Dayton to Porto?

What is the cheapest airline to fly from Dayton to Porto?

Key details for Dayton to Porto flights

Cheapest flight

When to book flights from Dayton to Porto

Your Dayton to Porto flight questions, answered

Your guide to booking Dayton to Porto flights

More options for your flight from Dayton to Porto

Complete your trip to Porto with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Dayton to Porto

Find direct flights to and from Dayton and Porto

Flights from domestic origins to Porto

Flights to other popular destinations