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$286+ Cheap flights from Dallas 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — OPO
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas to Porto are usually found in January or December, booked 50 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap flight deals from Dallas to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) 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 September 16, 2025.

Round-trip from

$535
(United Airlines)

One-way from

$286
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$939
From Dallas to Porto
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One-way flight from Dallas to Porto
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Highest demand for flights based on searches. 22% potential increase in price ($229 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dallas to Porto

Cheapest flights from Dallas to Porto
Explore the most affordable flight options available from Dallas to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/209:25 amDFW - OPO
2 stops18h 20mUnited Airlines
Wed 11/512:35 pmOPO - DFW
2 stops26h 16mUnited Airlines
Deal found 9/14$535
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:55 pmDFW - OPO
1 stop15h 50mIberia
Tue 12/168:20 amOPO - DFW
2 stops19h 15mIberia
Deal found 9/14$554
This Ovago deal was found by Cheapflights users on 9/14. 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.
Tue 12/21:55 pmDFW - OPO
1 stop11h 45mBritish Airways
Tue 12/168:20 amOPO - DFW
1 stop14h 10mBritish Airways
Deal found 9/14$564
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:25 amDFW - OPO
3 stops24h 30mMultiple Airlines
Wed 11/56:05 amOPO - DFW
2 stops21h 04mMultiple Airlines
Deal found 9/14$585
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Fri 11/149:58 amDFW - OPO
2 stops17h 32mUnited Airlines
Tue 11/186:00 amOPO - DFW
2 stops22h 44mUnited Airlines
Deal found 9/14$594
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:20 pmDFW - OPO
2 stops20h 35mMultiple Airlines
Thu 11/65:10 pmOPO - DFW
3 stops33h 59mMultiple Airlines
Deal found 9/14$599
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:55 pmDFW - OPO
1 stop20h 05mAmerican Airlines
Thu 11/68:20 amOPO - DFW
2 stops21h 05mAmerican Airlines
Deal found 9/14$604
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 11/2310:10 amDFW - OPO
2 stops17h 20mUnited Airlines
Sat 12/612:30 pmOPO - DFW
1 stop31h 55mUnited Airlines
Deal found 9/14$609
This KLM deal was found by Cheapflights users on 9/15. 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.
Mon 10/276:39 pmDAL - OPO
2 stops15h 46mKLM
Wed 11/126:00 amOPO - DAL
2 stops20h 49mKLM
Deal found 9/15$610
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:05 amDFW - OPO
2 stops26h 10mAir Canada
Sat 12/66:00 amOPO - DFW
2 stops21h 32mAir Canada
Deal found 9/14$615
This KLM deal was found by Cheapflights users on 9/14. 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.
Mon 10/2012:01 pmDAL - OPO
2 stops16h 39mKLM
Wed 11/56:00 amOPO - DAL
2 stops17h 54mKLM
Deal found 9/14$634
This KLM deal was found by Cheapflights users on 9/15. 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 9/236:29 pmDAL - OPO
2 stops15h 06mKLM
Tue 10/711:35 amOPO - DAL
2 stops18h 20mKLM
Deal found 9/15$845

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dallas 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 September 16, 2025.
Use the filters below to find and compare flights from Dallas to Porto that are best for you.

Fly from

Dallas

Fly to

Porto

Route

Depart

Return

Price

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Mon 10/27

2:26 pm-9:30 am

2 stops14h 04m

Porto

Wed 11/12

12:35 pm-11:59 pm

1 stop17h 24m

$535

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Mon 10/20

7:00 am-9:45 am

1 stop20h 45m

Porto

Wed 11/5

12:35 pm-11:59 pm

1 stop17h 24m

$535

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Wed 3/4

7:00 am-9:30 am

2 stops20h 30m

Porto

Tue 3/17

6:00 am-6:56 pm

2 stops17h 56m

$544

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Tue 3/3

7:00 am-9:30 am

2 stops20h 30m

Porto

Thu 3/12

6:00 am-10:40 pm

2 stops21h 40m

$544

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Wed 3/4

7:00 am-9:30 am

2 stops20h 30m

Porto

Wed 3/11

6:00 am-10:40 pm

2 stops21h 40m

$544

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Wed 3/11

2:19 pm-9:30 am

2 stops14h 11m

Porto

Tue 3/17

12:35 pm-11:36 am

2 stops28h 01m

$547

DallasPorto

DFW - OPO

DFWOPO

Dallas/Fort Worth

Wed 3/4

9:55 am-9:30 am

2 stops17h 35m

Porto

Thu 3/12

12:35 pm-10:47 pm

1 stop15h 12m

$547

DallasPorto

DAL - OPO

DALOPO

Dallas Love Field

Mon 10/27

6:39 pm-3:25 pm

2 stops15h 46m

Porto

Wed 11/12

6:00 am-8:49 pm

2 stops20h 49m

$610

DallasPorto

DAL - OPO

DALOPO

Dallas Love Field

Mon 10/20

12:01 pm-10:40 am

2 stops16h 39m

Porto

Wed 11/5

6:00 am-5:54 pm

2 stops17h 54m

$634

DallasPorto

DAL - OPO

DALOPO

Dallas Love Field

Mon 3/9

6:37 pm-3:25 pm

2 stops15h 48m

Porto

Mon 3/16

11:15 am-9:44 am

2 stops27h 29m

$757

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 33 results
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Best time to book a flight from Dallas to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Dallas 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 Dallas to Porto

How far ahead should I book a flight from Dallas to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Dallas to Porto. Price data was last updated on September 12, 2025.

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Dallas to Porto (average of $523). Flying from Dallas to Porto in June is currently the most expensive (average of $1,027). 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.

What is the cheapest time of day to fly from DFW to OPO?

Find hourly flight availability from Dallas to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

One of the essential ways to save on airfare from Dallas to Porto is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 35% on airfare.

What is the cheapest day to fly from Dallas to Porto?

Use this chart to determine the cheapest time to fly round-trip from Dallas to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Dallas to Porto flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Dallas to Porto?

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated September 16, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Dallas to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,363 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dallas to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Dallas?

    If you book a flight to Porto from Dallas, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Dallas to Porto per day from 5 different airlines.

  • How long is the flight from Dallas to Porto?

    There are many flights that can get you from Dallas to Porto in 14h 04m. Fly via United Airlines or KLM to get the fastest option. Airlines will cover a distance of 4688 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Dallas to Porto round-trip?

    Our cheapest airline available from Dallas to Porto is Delta. Our recent data shows that you can find tickets from as low as $534 on this airline. Additional options worth looking into are American Airlines and Iberia, starting at $546 and $588 round-trip. Delta is 31% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Dallas to Porto that include hotel bookings?

    Yes. In addition to deals on Dallas to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dallas to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas to Porto.

  • Can I find deals for business class flights from Dallas to Porto?

    Yes. Cheapflights offers flight deals from Dallas 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 Dallas to Porto?

    Currently, January is the cheapest month in which you can book a flight from Dallas to Porto (average of $523). Flying from Dallas to Porto in June is currently the most expensive (average of $1,027). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Dallas to Porto

Discover the top 5 airlines that operate flights from Dallas to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$534Average$1,096FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$546Average$904FlexibilityNo cancel feeOn-time71%
IberiaCheapest$588Average$856FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$631Average$738FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$693Average$1,114FlexibilityNo cancel feeOn-time69%

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