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$261+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 December 15, 2025.

This oojo deal was found by Cheapflights users on 12/12. 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.
Wed 12/3110:30 pmIAD - OPO
1 stop13h 30mTAP AIR PORTUGAL
Sun 1/1112:00 pmOPO - IAD
1 stop32h 15mTAP AIR PORTUGAL
Deal found 12/12$506
This KAYAK deal was found by Cheapflights users on 12/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:25 pmIAD - OPO
1 stop20h 10mSWISS
Sun 1/114:10 pmOPO - IAD
2 stops53h 30mSWISS
Deal found 12/12$698
This Delta deal was found by Cheapflights users on 12/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:32 pmDCA - OPO
2 stops16h 58mDelta
Sun 1/115:00 amOPO - DCA
2 stops22h 48mDelta
Deal found 12/12$772
This CrystalTravel deal was found by Cheapflights users on 12/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:30 pmIAD - OPO
1 stop16h 55mSWISS
Mon 12/227:20 pmOPO - IAD
1 stop25h 10mSWISS
Deal found 12/14$830
This FlightHub deal was found by Cheapflights users on 12/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:00 pmIAD - OPO
1 stop12h 40mMultiple Airlines
Mon 2/212:05 pmOPO - IAD
1 stop33h 35mMultiple Airlines
Deal found 12/13$839
This FlightHub deal was found by Cheapflights users on 12/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:00 pmIAD - OPO
1 stop12h 40mLufthansa
Mon 2/21:45 pmOPO - IAD
2 stops29h 50mLufthansa
Deal found 12/13$876
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:55 pmIAD - OPO
2 stops36h 35mDelta
Thu 1/811:20 amOPO - IAD
1 stop34h 15mDelta
Deal found 12/14$892
This Trip.com deal was found by Cheapflights users on 12/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:30 pmIAD - OPO
1 stop30h 20mMultiple Airlines
Tue 12/236:00 amOPO - IAD
1 stop14h 50mMultiple Airlines
Deal found 12/15$903
This KAYAK deal was found by Cheapflights users on 12/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:25 pmIAD - OPO
1 stop12h 50mSWISS
Sun 12/217:25 pmOPO - IAD
2 stops47h 35mSWISS
Deal found 12/13$908
This Delta deal was found by Cheapflights users on 12/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:34 pmBWI - OPO
2 stops16h 56mDelta
Sun 1/115:00 amOPO - BWI
2 stops19h 07mDelta
Deal found 12/12$963
This Iberia deal was found by Cheapflights users on 12/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:30 pmDCA - OPO
2 stops12h 15mIberia
Mon 2/28:20 amOPO - DCA
2 stops15h 34mIberia
Deal found 12/13$977
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:30 pmPHL - OPO
1 stop22h 00mMultiple Airlines
Wed 1/216:05 amOPO - PHL
2 stops39h 44mMultiple Airlines
Deal found 12/14$1,028

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$436
(Kiwi.com)

One-way from

$261
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$832
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. 14% potential increase in price ($126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 15, 2025.
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

Mon 1/12

3:30 pm-12:05 pm

2 stops15h 35m

Porto

Tue 1/27

6:00 am-10:46 pm

2 stops21h 46m

$458

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/17

6:50 pm-10:30 am

1 stop10h 40m

Porto

Fri 2/27

5:00 am-4:05 pm

1 stop16h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 2/18

6:50 pm-10:30 am

1 stop10h 40m

Porto

Fri 2/27

5:00 am-4:05 pm

1 stop16h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/10

7:50 pm-10:30 am

1 stop10h 40m

Porto

Tue 3/17

11:15 am-5:05 pm

1 stop33h 50m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 2/15

6:50 pm-10:30 am

1 stop10h 40m

Porto

Tue 2/24

5:00 am-4:05 pm

1 stop16h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 2/16

6:50 pm-10:30 am

1 stop10h 40m

Porto

Fri 2/27

5:00 am-4:05 pm

1 stop16h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/10

7:50 pm-10:30 am

1 stop10h 40m

Porto

Mon 3/16

11:15 am-5:05 pm

1 stop33h 50m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 2/16

6:50 pm-10:30 am

1 stop10h 40m

Porto

Thu 2/26

5:00 am-4:05 pm

1 stop16h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 2/16

6:50 pm-10:30 am

1 stop10h 40m

Porto

Tue 2/24

11:15 am-4:05 pm

1 stop33h 50m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/17

6:50 pm-10:30 am

1 stop10h 40m

Porto

Thu 2/26

5:00 am-4:05 pm

1 stop16h 05m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

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

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

Find hourly flight availability from Maryland 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 December 15, 2025.

One of the essential ways to save on airfare from Maryland to Porto is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 44% on airfare.

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 9h 20m. Air Canada provides one of the quickest options available for as low as $486. The distance from Maryland to Porto is about 3520 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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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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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