HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$266+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maryland to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 23, 2025.

This KAYAK deal was found by Cheapflights users on 12/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Tue 1/136:00 pmOPO - IAD
1 stop32h 00mTAP AIR PORTUGAL
Deal found 12/21$602
This KAYAK deal was found by Cheapflights users on 12/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Mon 1/125:55 pmOPO - IAD
1 stop25h 40mTAP AIR PORTUGAL
Deal found 12/21$629
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:40 pmIAD - OPO
1 stop31h 45mDelta
Tue 1/1311:15 amOPO - IAD
2 stops34h 31mDelta
Deal found 12/21$687
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:10 amDCA - OPO
2 stops19h 20mDelta
Tue 1/1311:15 amOPO - DCA
2 stops34h 49mDelta
Deal found 12/21$690
This KAYAK deal was found by Cheapflights users on 12/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:20 pmIAD - OPO
2 stops19h 15mSWISS
Mon 1/129:10 amOPO - IAD
2 stops36h 30mSWISS
Deal found 12/21$721
This British Airways deal was found by Cheapflights users on 12/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:35 pmBWI - OPO
1 stop15h 10mBritish Airways
Mon 1/125:30 pmOPO - BWI
1 stop30h 15mBritish Airways
Deal found 12/21$728
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:40 pmIAD - OPO
1 stop31h 45mDelta
Sat 1/1011:15 amOPO - IAD
1 stop33h 50mDelta
Deal found 12/21$772
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:25 pmDCA - OPO
2 stops15h 05mDelta
Sun 1/1111:25 amOPO - DCA
2 stops24h 57mDelta
Deal found 12/21$791
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amDCA - OPO
2 stops22h 30mDelta
Fri 1/911:20 amOPO - DCA
2 stops36h 31mDelta
Deal found 12/21$804
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:40 pmIAD - OPO
1 stop31h 45mDelta
Thu 1/811:20 amOPO - IAD
1 stop34h 15mDelta
Deal found 12/21$805
This British Airways deal was found by Cheapflights users on 12/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 pmIAD - OPO
1 stop14h 00mBritish Airways
Sun 1/118:05 pmOPO - IAD
1 stop24h 30mBritish Airways
Deal found 12/21$823
This British Airways deal was found by Cheapflights users on 12/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:35 pmBWI - OPO
1 stop15h 10mBritish Airways
Fri 1/96:05 pmOPO - BWI
1 stop29h 40mBritish Airways
Deal found 12/21$823

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 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$464
(Gotogate)

One-way from

$266
(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 ($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 23, 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 1/19

1:10 pm-11:15 am

3 stops41h 05m

Porto

Mon 1/26

12:05 pm-9:36 pm

2 stops38h 31m

$504

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

4:35 pm-11:40 am

2 stops15h 05m

Porto

Mon 3/30

4:35 pm-4:00 pm

1 stop28h 25m

$509

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

7:50 am-11:40 am

2 stops23h 50m

Porto

Mon 3/30

7:20 pm-4:00 pm

2 stops25h 40m

$518

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/24

7:59 pm-3:25 pm

2 stops15h 26m

Porto

Tue 3/31

7:00 pm-3:35 pm

1 stop25h 35m

$523

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 1/8

5:40 pm-11:40 am

1 stop13h 00m

Porto

Thu 1/22

6:00 am-4:05 pm

1 stop15h 05m

$525

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 3/24

3:35 pm-10:30 am

2 stops14h 55m

Porto

Tue 3/31

5:00 am-5:54 pm

2 stops17h 54m

$528

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 3/24

2:25 pm-10:30 am

2 stops16h 05m

Porto

Tue 3/31

5:00 am-6:59 pm

2 stops18h 59m

$528

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/24

7:59 pm-3:25 pm

2 stops15h 26m

Porto

Tue 3/31

5:00 am-4:37 pm

2 stops16h 37m

$534

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/8

10:35 pm-3:00 pm

1 stop11h 25m

Porto

Mon 4/13

4:20 pm-3:05 pm

1 stop27h 45m

$546

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/22

10:33 am-9:45 am

2 stops18h 12m

Porto

Fri 5/8

6:00 am-4:00 pm

1 stop15h 00m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results
1
2
3
...
6

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 23, 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 15h 05m. SWISS provides one of the quickest options available for as low as $509. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maryland to Porto

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Lisbon flights
Newark to Lisbon flights
Boston to Lisbon flights
Dulles Intl to Lisbon flights
LaGuardia to Lisbon flights
Newark to Porto flights
San Francisco to Lisbon flights
Miami to Lisbon flights
Los Angeles to Lisbon flights
John F Kennedy Intl to Porto flights
O'Hare Intl to Lisbon flights
Dallas/Fort Worth to Lisbon flights
Boston to Ponta Delgada flights
Reagan-National to Lisbon flights
Baltimore to Lisbon flights
Seattle to Lisbon flights
Philadelphia to Lisbon flights
Boston to Porto flights
LaGuardia to Porto flights
Love Field to Lisbon flights
Minneapolis to Lisbon flights
Denver to Lisbon flights
Atlanta to Lisbon flights
Midway to Lisbon flights
John F Kennedy Intl to Ponta Delgada flights
John F Kennedy Intl to Funchal flights
Newark to Funchal flights
Newark to Ponta Delgada flights
Dulles Intl to Porto flights
Hobby to Lisbon flights
LaGuardia to Funchal flights
Newark to Faro flights
Charlotte to Lisbon flights
John F Kennedy Intl to Faro flights
San Jose to Lisbon flights
Cleveland to Lisbon flights
Reagan-National to Porto flights
Baltimore to Porto flights
Austin to Lisbon flights
Orlando to Lisbon flights
Portland to Lisbon flights
Santa Ana to Lisbon flights
Sky Harbor Intl to Lisbon flights
Raleigh to Lisbon flights
George Bush Intcntl to Lisbon flights
Detroit to Lisbon flights
Tampa to Lisbon flights
Fort Lauderdale to Lisbon flights
Ontario to Lisbon flights
Boston to Funchal flights

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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.