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$238+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
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 February 5, 2026.

This oojo deal was found by Cheapflights users on 2/4. 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.
Mon 3/166:30 pm
IAD
-
OPO
1 stop11h 30m
TAP AIR PORTUGAL
Wed 3/256:00 pm
OPO
-
IAD
1 stop26h 15m
TAP AIR PORTUGAL
Deal found 2/4$479
This oojo deal was found by Cheapflights users on 2/2. 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 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 2/2$480
This Mytrip deal was found by Cheapflights users on 2/2. 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 3/113:30 pm
PHL
-
OPO
2 stops17h 45m
Multiple Airlines
Mon 3/1612:30 pm
OPO
-
PHL
1 stop32h 35m
Multiple Airlines
Deal found 2/2$486
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:55 pm
PHL
-
OPO
2 stops15h 35m
United Airlines
Wed 3/46:00 am
OPO
-
PHL
2 stops21h 44m
United Airlines
Deal found 2/3$490
This Air France deal was found by Cheapflights users on 2/5. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1812:16 pm
PHL
-
OPO
2 stops17h 14m
Multiple Airlines
Wed 2/255:00 am
OPO
-
PHL
2 stops17h 56m
Multiple Airlines
Deal found 2/5$494
This oojo deal was found by Cheapflights users on 2/3. 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.
Fri 8/1410:35 pm
IAD
-
OPO
1 stop16h 50m
TAP AIR PORTUGAL
Mon 8/316:00 pm
OPO
-
IAD
1 stop26h 05m
TAP AIR PORTUGAL
Deal found 2/3$499
This Expedia deal was found by Cheapflights users on 2/3. 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 2/254:05 pm
PHL
-
OPO
2 stops16h 10m
Multiple Airlines
Mon 3/27:20 pm
OPO
-
PHL
2 stops32h 26m
Multiple Airlines
Deal found 2/3$500
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:45 pm
PHL
-
OPO
2 stops38h 55m
United Airlines
Fri 4/246:00 am
OPO
-
PHL
1 stop15h 05m
United Airlines
Deal found 2/2$505
This FlightHub deal was found by Cheapflights users on 2/4. 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.
Mon 3/93:30 pm
PHL
-
OPO
2 stops16h 35m
Multiple Airlines
Mon 3/304:35 pm
OPO
-
PHL
1 stop28h 30m
Multiple Airlines
Deal found 2/4$506
This Iberia deal was found by Cheapflights users on 2/3. 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 Iberia 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 2/258:40 pm
OPO
-
PHL
1 stop23h 45m
Iberia
Deal found 2/3$508
This oojo deal was found by Cheapflights users on 2/3. 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.
Tue 4/75:05 pm
IAD
-
OPO
1 stop18h 10m
TAP AIR PORTUGAL
Wed 4/155:05 am
OPO
-
IAD
1 stop20h 30m
TAP AIR PORTUGAL
Deal found 2/3$509
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:46 pm
PHL
-
OPO
2 stops16h 59m
American Airlines
Wed 2/258:40 pm
OPO
-
PHL
1 stop23h 45m
American Airlines
Deal found 2/3$512

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$479
(oojo)

One-way from

$238
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$612
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 ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 5, 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

Mon 3/9

3:30 pm-12:05 pm

2 stops16h 35m

Porto

Mon 3/30

4:35 pm-4:05 pm

1 stop28h 30m

$506

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 5/4

9:25 am-3:25 pm

2 stops25h 00m

Porto

Tue 5/12

5:00 am-11:07 pm

2 stops23h 07m

$524

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/16

4:35 pm-2:55 pm

2 stops18h 20m

Porto

Mon 3/23

4:15 pm-5:05 pm

1 stop28h 50m

$524

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/5

6:54 pm-3:30 pm

2 stops15h 36m

Porto

Wed 5/6

5:00 am-5:50 pm

2 stops17h 50m

$529

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/1

10:06 am-9:30 am

2 stops18h 24m

Porto

Sun 3/8

6:00 am-4:05 pm

1 stop15h 05m

$533

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 5/4

9:25 am-3:25 pm

2 stops25h 00m

Porto

Fri 5/8

5:00 am-11:07 pm

2 stops23h 07m

$533

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 5/4

9:25 am-3:25 pm

2 stops25h 00m

Porto

Mon 5/11

4:20 pm-7:25 pm

2 stops32h 05m

$544

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

9:41 am-10:30 am

2 stops20h 49m

Porto

Mon 3/30

5:00 am-9:23 pm

2 stops21h 23m

$545

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/11

12:10 pm-3:25 pm

2 stops23h 15m

Porto

Mon 3/16

12:30 pm-10:14 am

2 stops25h 44m

$559

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/15

6:15 pm-3:25 pm

1 stop16h 10m

Porto

Wed 5/6

5:00 am-3:35 pm

1 stop15h 35m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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 15h 36m. Delta provides one of the quickest options available for as low as $529. 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
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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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