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Portugal

$342+ Cheap flights from Maryland to Portugal

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LIS
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Cheap flight deals from Maryland to Portugal

Cheapest flights from Maryland to Portugal
Explore the most affordable flight options available from Maryland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This American Airlines deal was found by Cheapflights users on 5/8. 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.
Sun 11/158:35 pm
BWI
-
LIS
1 stop16h 10m
American Airlines
Thu 11/196:30 am
LIS
-
BWI
2 stops18h 00m
American Airlines
Deal found 5/8$712
This Cheapflightsfares deal was found by Cheapflights users on 5/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:35 pm
BWI
-
LIS
1 stop16h 10m
British Airways
Wed 11/410:40 am
LIS
-
BWI
1 stop13h 05m
British Airways
Deal found 5/11$721
This oojo deal was found by Cheapflights users on 5/7. 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 9/89:45 pm
IAD
-
OPO
1 stop36h 55m
Turkish Airlines
Tue 9/154:50 pm
OPO
-
IAD
1 stop23h 45m
Turkish Airlines
Deal found 5/7$724
This American Airlines deal was found by Cheapflights users on 5/10. 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.
Tue 11/108:35 pm
BWI
-
LIS
1 stop16h 05m
American Airlines
Wed 11/1811:05 am
LIS
-
BWI
2 stops13h 25m
American Airlines
Deal found 5/10$724
This Iberia deal was found by Cheapflights users on 5/10. 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 11/48:35 pm
BWI
-
LIS
1 stop20h 15m
Multiple Airlines
Mon 11/99:05 pm
LIS
-
BWI
2 stops26h 40m
Multiple Airlines
Deal found 5/10$725
This oojo deal was found by Cheapflights users on 5/11. 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.
Sat 11/75:25 pm
IAD
-
FAO
1 stop25h 25m
TAP AIR PORTUGAL
Sat 11/146:05 am
FAO
-
IAD
1 stop14h 10m
TAP AIR PORTUGAL
Deal found 5/11$725
This oojo deal was found by Cheapflights users on 5/10. 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.
Sun 11/18:35 pm
BWI
-
LIS
1 stop13h 15m
British Airways
Mon 11/96:35 pm
LIS
-
BWI
1 stop29h 10m
British Airways
Deal found 5/10$726
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:35 pm
IAD
-
OPO
1 stop16h 50m
TAP AIR PORTUGAL
Tue 8/2510:30 pm
OPO
-
IAD
1 stop21h 40m
TAP AIR PORTUGAL
Deal found 5/6$727
This American Airlines deal was found by Cheapflights users on 5/9. 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.
Tue 11/105:46 pm
BWI
-
LIS
2 stops15h 59m
American Airlines
Tue 11/1711:05 am
LIS
-
BWI
2 stops18h 25m
American Airlines
Deal found 5/9$729
This British Airways deal was found by Cheapflights users on 5/9. 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.
Sun 11/18:35 pm
BWI
-
LIS
1 stop13h 15m
British Airways
Fri 11/610:40 am
LIS
-
BWI
1 stop13h 05m
British Airways
Deal found 5/9$731
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Mon 10/2612:35 pm
IAD
-
OPO
1 stop16h 55m
United Airlines
Fri 11/66:00 am
OPO
-
IAD
1 stop14h 50m
United Airlines
Deal found 5/6$732
This Delta deal was found by Cheapflights users on 5/6. 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.
Mon 10/267:50 pm
IAD
-
OPO
1 stop10h 40m
Delta
Mon 11/911:15 am
OPO
-
IAD
1 stop33h 30m
Delta
Deal found 5/6$734

Find flight deals from Maryland to Portugal

Keep the following information in mind while searching for Maryland to Portugal flight deals. Data was last updated May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$713
(American Airlines)

One-way from

$342
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,194
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.
Search Deals
From Maryland to Portugal
Search Deals
One-way flight from Maryland to Portugal
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($284 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maryland to Portugal 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 May 11, 2026.
Use the filters below to find and compare flights from Maryland to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 8/17

3:45 pm-7:00 am

1 stop10h 15m

Porto

Thu 9/3

6:00 am-4:05 pm

1 stop15h 05m

$792

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 8/17

12:30 pm-8:30 am

2 stops15h 00m

Porto

Mon 8/31

11:25 am-3:35 pm

1 stop33h 10m

$798

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 8/17

12:30 pm-8:30 am

2 stops15h 00m

Porto

Fri 9/4

5:00 am-3:35 pm

1 stop15h 35m

$798

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 8/19

4:20 pm-7:00 am

1 stop9h 40m

Porto

Tue 9/1

12:15 pm-9:48 pm

1 stop14h 33m

$803

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 9/25

7:10 pm-9:45 am

2 stops57h 35m

Porto

Tue 10/6

12:15 pm-5:13 pm

2 stops57h 58m

$812

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 8/9

5:42 pm-9:45 am

1 stop11h 03m

Porto

Wed 8/19

2:25 pm-1:55 pm

2 stops28h 30m

$820

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 10/1

10:10 pm-7:10 am

2 stops28h 00m

Porto

Tue 11/10

12:30 pm-12:14 am

2 stops16h 44m

$835

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 10/25

11:30 pm-1:30 pm

1 stop10h 00m

Porto

Thu 11/5

7:00 am-3:15 pm

1 stop13h 15m

$836

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 8/5

9:45 am-7:00 am

1 stop16h 15m

Porto

Wed 8/26

2:25 pm-4:09 pm

2 stops30h 44m

$850

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 9/21

6:40 pm-5:25 pm

2 stops17h 45m

Faro

Tue 9/29

8:35 pm-3:35 pm

1 stop24h 00m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

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

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

What is the cheapest month to book a flight from Maryland to Portugal?

Currently, October is the cheapest month in which you can book a flight from Maryland to Portugal (average of $396). Flying from Maryland to Portugal in January is currently the most expensive (average of $1,465). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Maryland to Portugal. 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 Maryland to Portugal?

    Airlines like United Airlines, Delta, and KLM fly from Maryland to Portugal in about 10h 15m. The time it takes to get you to your destination can typically vary by up to 7h 30m. The distance from Maryland to Portugal is about 3537 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maryland to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maryland to Portugal?

    Currently, October is the cheapest month in which you can book a flight from Maryland to Portugal (average of $396). Flying from Maryland to Portugal in January is currently the most expensive (average of $1,465). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Maryland to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Maryland to Portugal

Discover the top 3 airlines that operate flights from Maryland to Portugal. 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$921FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$640Average$896FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$781Average$1,208FlexibilityNo cancel feeOn-time70%

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