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Find cheap Delta flights to Porto

CMH — OPO
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Delta flight deals to Porto

Cheapest Delta flights from USA to Porto
Explore the most affordable Delta flight options available from USA to Porto. Find the lowest fares with prices last updated on July 27, 2026.

This Delta deal was found by Cheapflights users on 7/23. 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.
Sun 8/3010:20 pm
JFK
-
OPO
Nonstop7h 05m
Delta
Wed 9/912:40 pm
OPO
-
JFK
Nonstop7h 50m
Delta
Deal found 7/23$858
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:20 pm
JFK
-
OPO
Nonstop7h 05m
Delta
Thu 9/101:25 pm
OPO
-
JFK
Nonstop7h 50m
Delta
Deal found 7/24$859
This Delta deal was found by Cheapflights users on 7/23. 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.
Sun 8/2310:20 pm
JFK
-
OPO
Nonstop7h 05m
Delta
Tue 9/11:05 pm
OPO
-
JFK
Nonstop7h 50m
Delta
Deal found 7/23$860

Flights to Porto with Delta at a glance

Find detailed information about Delta flights from USA to Porto. Explore the options provided by Delta to plan your journey from USA to Porto. Data last updated July 27, 2026.

Popular in

June

Cheapest in

January

Average price

$877

Round-trip from

$670

One-way from

$338

Good round-trip deal

$858 or less
Highest demand for flights to Porto with Delta; 20% potential price increase.
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Best time to find cheap flights to Porto with Delta; 3% potential price drop.
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Average price for flights to Porto with Delta (round-trip).
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Delta
  • Delta
  • 11/14-11/27
  • 2 total stops
  • 44h 45m total
  • USA to Porto
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Delta
  • Delta
  • 10/27
  • 2 total stops
  • 18h 17m total
  • USA to Porto
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Price to beat on a round-trip flight from the United States to Porto with Delta.
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Cheapflights Insights

Find cheap Delta flights to Porto

How long is the flight to Porto with Delta?

On average, Delta flights from the United States to Porto take 8 hours 23 minutes. Flights to Porto from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Delta weekly flight availability to Porto

The most flights to Porto operated by Delta are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

When is the best time to book a flight to Porto with Delta?

The best time to book a flight to Porto with Delta is 29 days before departure. On average, fares are higher if you book on the same day as departure.

FAQs about flights to Porto with Delta

  • Which airport do Delta flights arrive at when travelling to Porto?

    Delta flights on this route tend to land at Porto Airport.

  • Is Delta the cheapest airline for a flight to Porto?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Porto tends to be with Scandinavian Airlines.

  • Are there alternative airlines other than Delta that fly to Porto?

    TAP AIR PORTUGAL, United Airlines and KLM all fly to Porto and offer an alternative to Delta.

  • How much is a flight to Porto with Delta?

    The average price for a return flight with Delta is $1,016; with a one-way flight around $619.

See more FAQs

Reviews of Delta

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Delta
7.8
Good
8,485 reviews
Overview

Comfort

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

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