DAY - OPO

$765 Find Cheap Flights from Dayton to Porto - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$765
Typical prices: $1,182-$2,236
United Airlines
Sun 11/25Sun 12/2
DAY - OPO • 2 stops
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Cheap Flights from Dayton to Porto (DAY-OPO)

 

Cheap flights from Dayton to Porto with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Wed, Nov 25 - Wed, Dec 2
United Airlines Logo
2:10 pm - 9:30 amDAY  Dayton-OPO Porto
14h 20m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 8:17 pmOPO  Porto-DAY Dayton
36h 42m2 stops Frankfurt am Main Chicago O'Hare Intl
$765United Airlines
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
2:50 pm - 9:30 amDAY  Dayton-OPO Porto
13h 40m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 10:21 pmOPO  Porto-DAY Dayton
21h 21m2 stops Frankfurt am Main Chicago O'Hare Intl
$779United Airlines
Fri, Nov 27 - Fri, Dec 4
United Airlines Logo
2:10 pm - 9:30 amDAY  Dayton-OPO Porto
14h 20m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 10:15 amOPO  Porto-DAY Dayton
26h 40m2 stops Frankfurt am Main Chicago O'Hare Intl
$783United Airlines
Sun, Nov 29 - Sun, Dec 6
Delta Logo
11:24 am - 10:35 amDAY  Dayton-OPO Porto
18h 11m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
5:00 am - 6:06 pmOPO  Porto-DAY Dayton
18h 06m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$784Delta
Sat, Nov 28 - Sat, Dec 5
United Airlines Logo
10:39 am - 3:10 pmDAY  Dayton-OPO Porto
23h 31m2 stops Washington, D.C. Dulles Intl Frankfurt am Main
United Airlines Logo
12:35 pm - 11:29 pmOPO  Porto-DAY Dayton
15h 54m2 stops Newark Chicago O'Hare Intl
$861United Airlines
Wed, Dec 9 - Fri, Dec 11
United Airlines Logo
9:00 am - 9:30 amDAY  Dayton-OPO Porto
19h 30m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 11:29 pmOPO  Porto-DAY Dayton
15h 54m2 stops Newark Chicago O'Hare Intl
$1,093United Airlines
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
10:39 am - 9:30 amDAY  Dayton-OPO Porto
17h 51m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
7:00 am - 7:30 pmOPO  Porto-DAY Dayton
17h 30m3 stops Lisbon Humberto Delgado Newark Washington, D.C. Dulles Intl
$1,230United Airlines

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 with more confidence.

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

Round-trip flights from Dayton to Porto typically range from $1,182 to $2,236. The lowest price found in the past 5 days was $765, on United Airlines.

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Key details for Dayton to Porto flights

Cheapest flight

$765
Round-trip 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

Your Dayton to Porto flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

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

  • 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 varied from about $765 to $1,403. That means the highest observed fare was about 83% higher than the lowest one.

  • 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:

    • GREEN MOTION
    • Drive on Holiday
    • Klass Wagen
    • Goldcar Rental SP
    • Sixt

  • 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).

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

    Yes. Flexible dates can save you up to 40% on flights from Dayton to Porto. Wednesday is the cheapest departure day at $1,343 round-trip on average, while Thursday is the most expensive at $2,236, a difference of $893.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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 popular places can I visit in Porto?

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

Your guide to booking Dayton to Porto flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Thursday. On this route, Wednesday flights average $1,343, about $893 less than Thursday fares (40% 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

More options for your flight from Dayton to Porto

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

Car rentals in Porto
Hotels in Porto
Vacations in Porto