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$323+ Cheap flights from Portugal to Maryland

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BWI
Sep 17 — Sep 241
Thu 9/17
Thu 9/24
1 adult, Economy
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Cheap flight deals from Portugal to Maryland

Cheapest flights from Portugal to Maryland
Explore the most affordable flight options available from Portugal to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.

This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:10 am -
1 stop15h 05m
Sun 10/119:35 pm -
1 stop13h 50m
Deal found 8/13$535
This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:20 am -
1 stop15h 05m
Sun 10/117:15 pm -
1 stop16h 10m
Deal found 8/13$536
This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:20 am -
1 stop14h 55m
Sat 10/109:30 pm -
1 stop15h 35m
Deal found 8/13$536
This deal was found by Cheapflights users on 8/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:20 am -
1 stop14h 55m
Thu 11/196:55 pm -
1 stop12h 10m
Deal found 8/14$537
This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:20 am -
1 stop15h 05m
Mon 10/1210:25 pm -
1 stop12h 20m
Deal found 8/13$538
This deal was found by Cheapflights users on 8/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:20 am -
1 stop15h 05m
Tue 11/176:05 pm -
1 stop15h 45m
Deal found 8/14$553
This deal was found by Cheapflights users on 8/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:20 am -
1 stop14h 55m
Tue 11/176:55 pm -
1 stop14h 55m
Deal found 8/14$553
This deal was found by Cheapflights users on 8/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:00 pm -
1 stop12h 15m
Wed 11/187:40 pm -
1 stop12h 10m
Deal found 8/14$555
This deal was found by Cheapflights users on 8/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 am -
1 stop15h 30m
Thu 11/195:50 pm -
1 stop13h 00m
Deal found 8/14$568
This Gotogate deal was found by Cheapflights users on 8/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:00 am -
1 stop11h 10m
Wed 9/3010:35 pm -
1 stop15h 25m
Deal found 8/14$584
This Expedia deal was found by Cheapflights users on 8/16. 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 11/266:30 am -
1 stop14h 50m
Sun 11/296:05 pm -
1 stop15h 50m
Deal found 8/16$586
This Travelis deal was found by Cheapflights users on 8/17. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:15 pm -
1 stop12h 20m
Mon 11/3012:35 pm -
1 stop14h 25m
Deal found 8/17$590

Find flight deals from Portugal to Maryland

Keep the following information in mind while searching for Portugal to Maryland flight deals. Data was last updated August 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$535

One-way from

$323
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$771
Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. (WAS) flights.
Search Deals
From Portugal to Maryland
Search Deals
One-way flight from Portugal to Maryland
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Maryland 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 August 18, 2026.
Use the filters below to find and compare flights from Portugal to Maryland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 9/17

7:00 am-3:10 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Wed 9/30

10:35 pm-8:25 pm

1 stop16h 50m

$592

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 9/10

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Thu 9/17

9:45 pm-10:00 pm

1 stop19h 15m

$603

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 9/17

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/30

6:26 pm-3:25 pm

2 stops15h 59m

$603

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Wed 9/2

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sun 9/6

7:15 pm-3:30 pm

2 stops15h 15m

$605

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Tue 9/15

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 9/22

6:26 pm-3:25 pm

2 stops15h 59m

$605

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Fri 9/4

3:35 pm-3:35 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Tue 9/15

6:15 pm-11:15 am

1 stop12h 00m

$608

PortoWashington, D.C.

OPO Porto - DCA Washington, D.C. Reagan-National

OPODCA

Porto

Fri 8/28

5:00 am-4:59 pm

2 stops16h 59m

Washington, D.C. Reagan-National

Mon 8/31

5:00 pm-3:25 pm

2 stops17h 25m

$608

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 12/10

5:00 am-3:45 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Wed 12/30

6:40 pm-11:20 am

1 stop11h 40m

$610

PortoBaltimore

OPO Porto - BWI Baltimore/Washington

OPOBWI

Porto

Tue 9/29

5:00 am-9:02 pm

2 stops21h 02m

Baltimore/Washington

Tue 10/6

1:55 pm-3:25 pm

2 stops20h 30m

$610

PortoWashington, D.C.

OPO Porto - DCA Washington, D.C. Reagan-National

OPODCA

Porto

Wed 9/2

5:00 am-5:51 pm

2 stops17h 51m

Washington, D.C. Reagan-National

Sun 9/6

5:00 pm-3:30 pm

2 stops17h 30m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Portugal to Maryland

Have a flexible travel schedule? Discover the best time to fly to Maryland from Portugal 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 Portugal to Maryland

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 Portugal to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portugal to Maryland?

    There are many flights that can get you from Portugal to Maryland in 13h 10m. Fly via TAP AIR PORTUGAL, KLM, or Delta to get the fastest option. Portugal and Maryland are separated by a distance of 3537 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Portugal to Maryland that include hotel bookings?

    Yes. In addition to deals on Portugal to Maryland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Maryland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Maryland.

  • Can I find deals for business class flights from Portugal to Maryland?

    Yes. Cheapflights offers flight deals from Portugal to Maryland 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

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