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$216+ Cheap flights from Maryland 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Maryland to Porto

Keep the following information in mind while searching for Maryland to Porto flight deals. Data was last updated January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$436
(oojo)

One-way from

$216
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$636
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
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From Maryland to Porto
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One-way flight from Maryland to Porto
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Highest demand for flights based on searches. 13% potential increase in price ($116 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Maryland to Porto

Cheapest flights from Maryland to Porto
Explore the most affordable flight options available from Maryland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:50 pm
PHL
-
OPO
1 stop18h 40m
British Airways
Thu 4/3012:25 pm
OPO
-
PHL
2 stops27h 27m
British Airways
Deal found 1/13$436
This Iberia deal was found by Cheapflights users on 1/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:45 pm
PHL
-
OPO
1 stop11h 00m
Iberia
Wed 2/259:55 pm
OPO
-
PHL
1 stop22h 10m
Iberia
Deal found 1/12$444
This oojo deal was found by Cheapflights users on 1/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:20 pm
IAD
-
OPO
1 stop15h 45m
Scandinavian Airlines
Fri 4/245:55 pm
OPO
-
IAD
1 stop27h 55m
Scandinavian Airlines
Deal found 1/11$447
This British Airways deal was found by Cheapflights users on 1/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/157:35 pm
PHL
-
OPO
1 stop17h 05m
British Airways
Mon 3/238:40 pm
OPO
-
PHL
1 stop24h 15m
British Airways
Deal found 1/14$449
This Iberia deal was found by Cheapflights users on 1/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:45 pm
PHL
-
OPO
1 stop20h 15m
Iberia
Mon 3/3010:00 pm
OPO
-
PHL
1 stop22h 25m
Iberia
Deal found 1/11$453
This British Airways deal was found by Cheapflights users on 1/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:45 pm
PHL
-
OPO
1 stop19h 15m
Multiple Airlines
Wed 2/258:20 am
OPO
-
PHL
2 stops16h 28m
Multiple Airlines
Deal found 1/12$456
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:05 pm
IAD
-
OPO
1 stop10h 55m
TAP AIR PORTUGAL
Sun 4/199:00 am
OPO
-
IAD
1 stop11h 05m
TAP AIR PORTUGAL
Deal found 1/13$461
This oojo deal was found by Cheapflights users on 1/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:30 pm
IAD
-
OPO
1 stop18h 30m
TAP AIR PORTUGAL
Sun 3/18:00 pm
OPO
-
IAD
1 stop24h 15m
TAP AIR PORTUGAL
Deal found 1/12$462
This Mytrip deal was found by Cheapflights users on 1/11. 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.
Tue 2/109:45 am
IAD
-
OPO
2 stops20h 30m
Multiple Airlines
Tue 2/176:00 am
OPO
-
IAD
1 stop14h 50m
Multiple Airlines
Deal found 1/11$463
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Tue 4/211:27 pm
PHL
-
OPO
2 stops15h 18m
United Airlines
Thu 4/306:00 am
OPO
-
PHL
2 stops21h 44m
United Airlines
Deal found 1/13$464
This Kiwi.com deal was found by Cheapflights users on 1/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:35 pm
IAD
-
OPO
1 stop17h 25m
Multiple Airlines
Wed 4/298:40 am
OPO
-
IAD
1 stop13h 05m
Multiple Airlines
Deal found 1/11$465
This Gotogate deal was found by Cheapflights users on 1/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/249:55 am
IAD
-
OPO
2 stops22h 10m
Multiple Airlines
Tue 3/316:00 am
OPO
-
IAD
1 stop15h 05m
Multiple Airlines
Deal found 1/13$466

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maryland 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 January 14, 2026.
Use the filters below to find and compare flights from Maryland to Porto that are best for you.

Fly from

Maryland

Fly to

Porto

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/15

7:35 pm-4:40 pm

1 stop17h 05m

Porto

Mon 3/23

8:40 pm-4:55 pm

1 stop24h 15m

$449

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/22

11:36 am-9:45 am

2 stops17h 09m

Porto

Fri 5/8

6:00 am-4:00 pm

1 stop15h 00m

$456

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

7:45 pm-8:00 pm

1 stop19h 15m

Porto

Wed 2/25

8:20 am-7:48 pm

2 stops16h 28m

$456

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 3/18

11:55 pm-11:40 pm

1 stop19h 45m

Porto

Thu 4/2

6:00 am-4:05 pm

1 stop15h 05m

$475

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 4/13

9:45 pm-3:25 pm

1 stop12h 40m

Porto

Tue 5/5

5:00 am-3:35 pm

1 stop15h 35m

$483

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/15

7:35 pm-4:40 pm

1 stop17h 05m

Porto

Wed 3/25

6:35 pm-5:15 pm

1 stop26h 40m

$483

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/17

7:35 pm-5:45 pm

1 stop18h 10m

Porto

Wed 3/25

6:35 pm-5:15 pm

1 stop26h 40m

$483

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/16

7:35 pm-5:35 pm

1 stop18h 00m

Porto

Wed 3/25

6:35 pm-5:15 pm

1 stop26h 40m

$483

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/17

4:43 pm-5:45 pm

2 stops21h 02m

Porto

Tue 3/24

6:25 pm-5:15 pm

1 stop26h 50m

$487

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 4/7

1:19 pm-3:25 pm

2 stops21h 06m

Porto

Wed 4/15

11:45 am-3:35 pm

1 stop32h 50m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 60 results
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Best time to book a flight from Maryland to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Maryland 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 Maryland to Porto
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Maryland 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 Maryland?

    If you book a flight to Porto from Maryland, 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.

  • How long is the flight from Maryland to Porto?

    A quick flight from Maryland to Porto can take about 17h 05m. British Airways provides one of the quickest options available for as low as $449. The distance from Maryland to Porto is about 3403 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Maryland to Porto?

    When deciding which route to take from Maryland to Porto consider Washington, D.C. Dulles Intl - Porto, Washington, D.C. Reagan-National - Porto or Baltimore/Washington - Porto as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maryland 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.

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
Vila Nova de Gaia

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See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Maryland to Porto

Discover the top airline that operate flights from Maryland 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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