HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$273+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Dec 14 — Dec 211
Sun 12/14
Sun 12/21
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.

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 November 14, 2025.

This CrystalTravel deal was found by Cheapflights users on 11/12. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:40 pmPHL - OPO
1 stop13h 00mLufthansa
Tue 12/96:00 amOPO - PHL
1 stop15h 05mLufthansa
Deal found 11/12$465
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/23:30 pmPHL - OPO
2 stops15h 10mUnited Airlines
Tue 12/96:00 amOPO - PHL
1 stop15h 05mUnited Airlines
Deal found 11/12$488
This Delta deal was found by Cheapflights users on 11/12. 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.
Tue 12/212:19 pmBWI - OPO
2 stops17h 11mDelta
Wed 12/106:00 amOPO - BWI
2 stops18h 32mDelta
Deal found 11/12$491
This Delta deal was found by Cheapflights users on 11/12. 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.
Tue 12/21:15 pmDCA - OPO
2 stops16h 15mDelta
Wed 12/106:00 amOPO - DCA
2 stops16h 59mDelta
Deal found 11/12$491
This Delta deal was found by Cheapflights users on 11/12. 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.
Tue 12/210:32 amPHL - OPO
2 stops18h 58mDelta
Tue 12/96:05 amOPO - PHL
2 stops22h 05mDelta
Deal found 11/12$491
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/111:05 amDCA - OPO
2 stops20h 45mAir Canada
Mon 12/86:00 amOPO - DCA
2 stops57h 21mAir Canada
Deal found 11/12$494
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:10 pmBWI - OPO
2 stops17h 05mMultiple Airlines
Wed 12/106:00 amOPO - BWI
3 stops20h 08mMultiple Airlines
Deal found 11/12$497
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:00 pmIAD - OPO
1 stop15h 55mMultiple Airlines
Mon 12/86:00 amOPO - IAD
2 stops43h 59mMultiple Airlines
Deal found 11/12$498
This Expedia deal was found by Cheapflights users on 11/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/23:30 pmPHL - OPO
2 stops18h 15mMultiple Airlines
Mon 12/87:20 pmOPO - PHL
2 stops32h 26mMultiple Airlines
Deal found 11/13$498
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:45 amIAD - OPO
2 stops21h 20mMultiple Airlines
Sun 12/76:15 amOPO - IAD
1 stop18h 50mMultiple Airlines
Deal found 11/12$504
This oojo deal was found by Cheapflights users on 11/13. 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.
Fri 12/510:30 pmIAD - OPO
1 stop18h 30mTAP AIR PORTUGAL
Tue 12/168:00 pmOPO - IAD
1 stop30h 00mTAP AIR PORTUGAL
Deal found 11/13$505
This Mytrip deal was found by Cheapflights users on 11/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:40 pmPHL - OPO
1 stop16h 05mLufthansa
Mon 12/84:15 pmOPO - PHL
1 stop28h 50mLufthansa
Deal found 11/13$506

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 November 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$465
(CrystalTravel)

One-way from

$273
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$673
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 November 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 November 14, 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

Tue 12/2

5:40 pm-2:45 pm

1 stop16h 05m

Porto

Tue 12/9

6:00 am-4:05 pm

1 stop15h 05m

$482

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 12/2

3:30 pm-11:40 am

2 stops15h 10m

Porto

Tue 12/9

6:00 am-4:05 pm

1 stop15h 05m

$488

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 12/2

5:40 pm-2:45 pm

1 stop16h 05m

Porto

Tue 12/9

6:00 am-4:05 pm

1 stop15h 05m

$488

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 12/2

10:32 am-10:30 am

2 stops18h 58m

Porto

Tue 12/9

6:05 am-11:10 pm

2 stops22h 05m

$491

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 1/14

10:54 am-10:30 am

2 stops18h 36m

Porto

Thu 1/22

6:35 am-12:45 am

2 stops23h 10m

$492

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

11:25 am-11:53 am

2 stops28h 28m

$493

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 3/10

6:00 pm-9:30 am

1 stop11h 30m

Porto

Tue 3/17

12:35 pm-9:31 pm

1 stop12h 56m

$494

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 3/10

6:00 pm-9:30 am

1 stop11h 30m

Porto

Wed 3/18

12:35 pm-9:31 pm

1 stop12h 56m

$494

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 12/2

1:10 pm-11:15 am

2 stops17h 05m

Porto

Wed 12/10

6:00 am-9:08 pm

3 stops20h 08m

$497

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 3/11

11:00 am-10:30 am

2 stops19h 30m

Porto

Wed 3/18

11:25 am-6:06 pm

2 stops34h 41m

$498

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

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 November 14, 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 10m. Lufthansa provides one of the quickest options available for as low as $488. 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 cheapest airlines to fly from Maryland to Porto one-way?

    $419 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and TAP AIR PORTUGAL, with prices starting from $423 and $451, respectively.

  • 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
LaGuardia to Lisbon flights
Dulles Intl to Lisbon flights
San Francisco to Lisbon flights
Miami to Lisbon flights
Dallas/Fort Worth to Lisbon flights
O'Hare Intl to Lisbon flights
Los Angeles to Lisbon flights
Reagan-National to Lisbon flights
John F Kennedy Intl to Porto flights
Boston to Ponta Delgada flights
Seattle to Lisbon flights
Baltimore to Lisbon flights
Denver to Lisbon flights
Philadelphia to Lisbon flights
Newark to Porto flights
LaGuardia to Porto flights
Boston to Porto flights
Atlanta to Lisbon flights
John F Kennedy Intl to Ponta Delgada flights
Hobby to Lisbon flights
Minneapolis to Lisbon flights
John F Kennedy Intl to Funchal flights
Raleigh to Lisbon flights
Newark to Funchal flights
Orlando to Lisbon flights
Midway to Lisbon flights
Love Field to Lisbon flights
George Bush Intcntl to Lisbon flights
Fort Lauderdale to Lisbon flights
Charlotte to Lisbon flights
Newark to Ponta Delgada flights
Dulles Intl to Porto flights
Santa Ana to Lisbon flights
Sky Harbor Intl to Lisbon flights
Portland to Lisbon flights
Miami to Ponta Delgada flights
Boston to Funchal flights
Detroit to Lisbon flights
Austin to Lisbon flights
Atlanta to Ponta Delgada flights
Tampa to Lisbon flights
LaGuardia to Funchal flights
San Diego to Lisbon flights
O'Hare Intl to Ponta Delgada flights
Pittsburgh to Lisbon flights
Seattle to Porto flights
Reagan-National to Porto 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 November 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$782FlexibilityNo 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.
Site
Cookie settings©2025 Cheapflights