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$215+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap 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 21, 2026.

This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia 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
Iberia
Wed 2/259:55 pm
OPO
-
PHL
1 stop22h 10m
Iberia
Deal found 1/20$443
This British Airways deal was found by Cheapflights users on 1/20. 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.
Mon 2/27:50 pm
PHL
-
OPO
1 stop16h 45m
British Airways
Thu 2/128:40 pm
OPO
-
PHL
2 stops28h 54m
British Airways
Deal found 1/20$448
This British Airways deal was found by Cheapflights users on 1/19. 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.
Mon 3/210:25 am
PHL
-
OPO
2 stops16h 15m
Multiple Airlines
Tue 3/178:20 am
OPO
-
PHL
1 stop12h 35m
Multiple Airlines
Deal found 1/19$450
This British Airways deal was found by Cheapflights users on 1/20. 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 2/412:23 pm
PHL
-
OPO
2 stops23h 22m
British Airways
Thu 2/1212:25 pm
OPO
-
PHL
1 stop32h 00m
British Airways
Deal found 1/20$453
This Finnair deal was found by Cheapflights users on 1/19. 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 Finnair 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
Multiple Airlines
Wed 2/258:40 pm
OPO
-
PHL
1 stop23h 45m
Multiple Airlines
Deal found 1/19$456
This Iberia deal was found by Cheapflights users on 1/21. 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.
Tue 4/148:30 pm
PHL
-
OPO
1 stop18h 30m
Iberia
Mon 4/204:40 pm
OPO
-
PHL
1 stop30h 00m
Iberia
Deal found 1/21$457
This oojo deal was found by Cheapflights users on 1/18. 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 2/245:30 pm
IAD
-
OPO
1 stop11h 40m
TAP AIR PORTUGAL
Tue 3/36:55 am
OPO
-
IAD
1 stop12h 40m
TAP AIR PORTUGAL
Deal found 1/18$461
This Expedia deal was found by Cheapflights users on 1/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:50 am
PHL
-
OPO
2 stops14h 50m
Multiple Airlines
Wed 4/228:20 am
OPO
-
PHL
2 stops17h 35m
Multiple Airlines
Deal found 1/19$461
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 4/198:20 pm
IAD
-
OPO
1 stop17h 10m
SWISS
Thu 4/308:40 am
OPO
-
IAD
1 stop13h 05m
SWISS
Deal found 1/19$462
This British Airways deal was found by Cheapflights users on 1/20. 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.
Mon 2/212:23 pm
PHL
-
OPO
2 stops24h 12m
British Airways
Mon 2/98:40 pm
OPO
-
PHL
2 stops32h 15m
British Airways
Deal found 1/20$463
This Kiwi.com deal was found by Cheapflights users on 1/20. 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
Tue 4/218:40 am
OPO
-
IAD
1 stop13h 05m
Multiple Airlines
Deal found 1/20$464
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:20 pm
PHL
-
OPO
2 stops17h 15m
British Airways
Tue 3/178:40 pm
OPO
-
PHL
2 stops29h 16m
British Airways
Deal found 1/19$465

Find 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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$443
(Travelocity)

One-way from

$215
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$616
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
Search Deals
From Maryland to Porto
Search Deals
One-way flight from Maryland to Porto
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 21, 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

Wed 2/18

5:47 pm-4:00 pm

2 stops17h 13m

Porto

Wed 2/25

9:55 pm-3:05 pm

1 stop22h 10m

$448

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 2/2

7:50 pm-5:35 pm

1 stop16h 45m

Porto

Wed 2/11

8:20 am-9:56 pm

2 stops42h 36m

$453

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

7:35 am-6:35 pm

2 stops30h 00m

Porto

Wed 2/25

6:00 am-10:46 pm

2 stops21h 46m

$460

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 3/9

5:35 pm-9:30 am

1 stop11h 55m

Porto

Wed 3/25

6:00 am-4:50 pm

1 stop14h 50m

$481

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 4/20

5:41 pm-9:45 am

1 stop11h 04m

Porto

Thu 5/7

6:00 am-3:05 pm

1 stop14h 05m

$481

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

5:35 pm-11:10 am

1 stop12h 35m

Porto

Thu 4/16

12:35 pm-12:45 am

2 stops17h 10m

$490

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 2/3

3:30 pm-11:15 am

2 stops38h 45m

Porto

Tue 2/10

6:00 am-10:46 pm

2 stops21h 46m

$492

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/13

3:43 pm-10:30 pm

2 stops25h 47m

Porto

Mon 4/20

11:45 am-6:07 pm

2 stops35h 22m

$492

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 2/3

12:29 pm-10:30 am

2 stops17h 01m

Porto

Thu 2/12

5:00 am-8:50 am

2 stops32h 50m

$493

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/4

10:30 am-10:30 am

2 stops19h 00m

Porto

Wed 2/11

11:15 am-11:13 pm

2 stops40h 58m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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 11h 55m. Iberia provides one of the quickest options available for as low as $481. The distance from Maryland to Porto is about 3537 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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Alternative routes for Maryland to Porto

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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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