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$268+ 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
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
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 5, 2025.

This oojo deal was found by Cheapflights users on 12/3. 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 12/105:20 pmIAD - OPO
1 stop33h 35mSWISS
Wed 12/177:20 pmOPO - IAD
1 stop26h 20mSWISS
Deal found 12/3$498
This Expedia deal was found by Cheapflights users on 12/3. 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 12/106:20 pmIAD - OPO
2 stops13h 55mMultiple Airlines
Wed 12/177:20 pmOPO - IAD
1 stop26h 20mMultiple Airlines
Deal found 12/3$510
This FlightHub deal was found by Cheapflights users on 12/3. 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.
Sun 12/710:30 pmIAD - OPO
1 stop31h 35mTAP AIR PORTUGAL
Sat 1/318:55 amOPO - IAD
1 stop11h 20mTAP AIR PORTUGAL
Deal found 12/3$516
This Expedia deal was found by Cheapflights users on 12/4. 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.
Thu 12/113:25 pmDCA - OPO
2 stops23h 35mIberia
Wed 12/178:40 pmOPO - DCA
2 stops27h 02mIberia
Deal found 12/4$523
This Expedia deal was found by Cheapflights users on 12/3. 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 12/101:44 pmDCA - OPO
2 stops17h 01mIberia
Wed 12/178:40 pmOPO - DCA
2 stops27h 02mIberia
Deal found 12/3$595
This FlightHub deal was found by Cheapflights users on 12/4. 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.
Fri 12/510:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Mon 12/156:55 amOPO - IAD
1 stop13h 20mTAP AIR PORTUGAL
Deal found 12/4$600
This oojo deal was found by Cheapflights users on 12/4. 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 12/65:30 pmIAD - OPO
1 stop18h 30mTAP AIR PORTUGAL
Tue 12/168:00 pmOPO - IAD
1 stop30h 00mTAP AIR PORTUGAL
Deal found 12/4$613
This Gurufare deal was found by Cheapflights users on 12/4. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:30 pmIAD - OPO
1 stop16h 30mTAP AIR PORTUGAL
Mon 12/156:55 amOPO - IAD
1 stop13h 20mTAP AIR PORTUGAL
Deal found 12/4$614
This Gurufare deal was found by Cheapflights users on 12/4. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:30 pmIAD - OPO
1 stop13h 30mTAP AIR PORTUGAL
Tue 12/168:00 pmOPO - IAD
1 stop30h 00mTAP AIR PORTUGAL
Deal found 12/4$636
This Ovago deal was found by Cheapflights users on 12/4. 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.
Thu 12/119:45 pmIAD - OPO
1 stop14h 30mBritish Airways
Wed 12/178:40 pmOPO - IAD
1 stop24h 50mBritish Airways
Deal found 12/4$639
This British Airways deal was found by Cheapflights users on 12/4. 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.
Thu 12/116:20 pmIAD - OPO
1 stop17h 55mMultiple Airlines
Wed 12/178:40 pmOPO - IAD
1 stop24h 50mMultiple Airlines
Deal found 12/4$696
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Wed 12/105:05 pmIAD - OPO
2 stops21h 15mMultiple Airlines
Fri 12/127:00 amOPO - IAD
2 stops17h 30mMultiple Airlines
Deal found 12/2$729

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 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$427
(Kiwi.com)

One-way from

$268
(Mytrip)

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 ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 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 5, 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

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/3

5:40 pm-9:30 am

1 stop10h 50m

Porto

Thu 3/12

12:35 pm-9:05 pm

1 stop12h 30m

$445

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 2/24

4:10 pm-9:30 am

1 stop12h 20m

Porto

Tue 3/3

12:35 pm-7:35 pm

1 stop12h 00m

$445

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

1:10 pm-5:30 pm

2 stops23h 20m

Porto

Mon 2/9

12:05 pm-9:36 pm

2 stops38h 31m

$457

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/3

12:38 pm-10:30 am

2 stops16h 52m

Porto

Tue 3/10

11:15 am-5:05 pm

1 stop33h 50m

$469

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

12:15 pm-9:30 am

2 stops17h 15m

Porto

Tue 3/31

6:00 am-4:00 pm

1 stop15h 00m

$479

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/4

3:30 pm-1:15 pm

2 stops16h 45m

Porto

Wed 3/11

7:20 pm-5:05 pm

2 stops25h 45m

$480

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/3

12:38 pm-10:30 am

2 stops16h 52m

Porto

Mon 3/9

4:10 pm-5:05 pm

1 stop28h 55m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/24

12:38 pm-10:30 am

2 stops16h 52m

Porto

Tue 3/3

4:10 pm-4:05 pm

1 stop28h 55m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 3/4

6:05 pm-10:30 am

1 stop11h 25m

Porto

Wed 3/11

5:00 am-5:05 pm

1 stop16h 05m

$483

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 1/18

6:59 pm-3:25 pm

2 stops15h 26m

Porto

Tue 2/3

5:00 am-4:38 pm

2 stops16h 38m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

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 5, 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.

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

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 10h 50m. United Airlines provides one of the quickest options available for as low as $445. 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
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 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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