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$365+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BWI
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
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 March 20, 2026.

This Travelis deal was found by Cheapflights users on 3/17. 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.
Mon 4/1311:00 am
OPO
-
IAD
1 stop14h 35m
TAP AIR PORTUGAL
Sun 4/2610:35 pm
IAD
-
OPO
1 stop11h 25m
TAP AIR PORTUGAL
Deal found 3/17$520
This FlightHub deal was found by Cheapflights users on 3/20. 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 4/177:00 am
OPO
-
IAD
1 stop13h 10m
TAP AIR PORTUGAL
Sat 4/2510:35 pm
IAD
-
OPO
1 stop16h 50m
TAP AIR PORTUGAL
Deal found 3/20$560
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:00 am
OPO
-
IAD
1 stop13h 10m
TAP AIR PORTUGAL
Mon 4/2710:35 pm
IAD
-
OPO
1 stop13h 25m
TAP AIR PORTUGAL
Deal found 3/20$570
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:20 pm
LIS
-
IAD
Nonstop8h 05m
United Airlines
Sun 5/310:30 pm
IAD
-
LIS
Nonstop7h 00m
United Airlines
Deal found 3/17$586
This BusinessClass deal was found by Cheapflights users on 3/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:00 am
OPO
-
IAD
1 stop13h 10m
TAP AIR PORTUGAL
Sun 4/2610:35 pm
IAD
-
OPO
1 stop11h 25m
TAP AIR PORTUGAL
Deal found 3/20$588
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:20 am
LIS
-
IAD
1 stop13h 35m
British Airways
Mon 5/410:25 pm
IAD
-
LIS
1 stop14h 30m
British Airways
Deal found 3/17$589
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:20 am
LIS
-
IAD
1 stop13h 35m
British Airways
Sat 5/210:25 pm
IAD
-
LIS
1 stop14h 40m
British Airways
Deal found 3/17$599
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:20 am
LIS
-
IAD
1 stop13h 35m
British Airways
Sun 5/310:25 pm
IAD
-
LIS
1 stop14h 20m
British Airways
Deal found 3/17$600
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:10 am
LIS
-
IAD
1 stop13h 45m
British Airways
Wed 5/610:25 pm
IAD
-
LIS
1 stop12h 15m
British Airways
Deal found 3/17$604
This Gotogate deal was found by Cheapflights users on 3/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
OPO
-
IAD
1 stop15h 05m
Lufthansa
Thu 4/1610:20 pm
IAD
-
OPO
1 stop20h 05m
Lufthansa
Deal found 3/16$605
This deal was found by Cheapflights users on 3/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:20 pm
LIS
-
IAD
Nonstop8h 05m
United Airlines
Mon 5/45:42 pm
IAD
-
LIS
1 stop9h 38m
United Airlines
Deal found 3/17$606
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:55 pm
LIS
-
IAD
1 stop29h 20m
Scandinavian Airlines
Mon 11/308:30 pm
IAD
-
LIS
1 stop14h 35m
Scandinavian Airlines
Deal found 3/19$613

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 March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$520
(Travelis)

One-way from

$365
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$686
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. 12% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 20, 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 - DCA

OPODCA

Porto

Thu 4/16

6:00 am-10:43 pm

2 stops21h 43m

Washington, D.C. Reagan-National

Mon 4/20

6:00 pm-9:45 am

1 stop10h 45m

$642

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Wed 4/29

9:45 pm-10:00 pm

1 stop19h 15m

$643

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 5/19

6:00 am-9:11 pm

2 stops20h 11m

Washington, D.C. Dulles Intl

Sun 5/31

5:42 pm-9:45 am

1 stop11h 03m

$643

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 4/16

7:25 am-4:05 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Thu 4/23

10:20 pm-10:45 pm

1 stop19h 25m

$645

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 4/19

5:05 am-3:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 5/6

5:25 pm-1:40 pm

1 stop15h 15m

$646

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 5/19

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 6/8

7:59 pm-3:25 pm

2 stops14h 26m

$649

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 4/16

7:25 am-4:05 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Mon 4/20

10:20 pm-10:45 pm

1 stop19h 25m

$651

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

5:00 am-6:08 pm

2 stops18h 08m

Washington, D.C. Dulles Intl

Wed 4/29

9:45 pm-10:00 pm

1 stop19h 15m

$652

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 5/19

5:00 am-7:16 pm

2 stops19h 16m

Baltimore/Washington

Tue 6/9

1:00 pm-3:25 pm

2 stops21h 25m

$654

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 5/19

6:00 am-9:02 pm

2 stops20h 02m

Baltimore/Washington

Sun 5/31

6:15 am-6:55 am

2 stops19h 40m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

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 14h 35m. Fly via TAP AIR PORTUGAL, United Airlines, 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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Alternative routes for Portugal to Maryland

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