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$249+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LIS
nov. 19 — nov. 261
mié. 11/19
mié. 11/26
1 adult, Economy
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Find 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 octubre 20, 2025.

This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:45 amIAD - OPO
2 stops22h 30mMultiple Airlines
mar. 12/96:00 amOPO - IAD
1 stop14h 50mMultiple Airlines
Deal found 10/20$476
This KLM deal was found by Cheapflights users on 10/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:50 pmIAD - OPO
1 stop10h 40mKLM
mar. 12/96:05 amOPO - IAD
1 stop15h 00mKLM
Deal found 10/20$478
This Air Canada deal was found by Cheapflights users on 10/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:45 amIAD - OPO
2 stops22h 30mAir Canada
mar. 12/96:00 amOPO - IAD
2 stops20h 20mAir Canada
Deal found 10/20$482
This Air Canada deal was found by Cheapflights users on 10/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/34:10 pmDCA - OPO
2 stops16h 05mAir Canada
mar. 12/96:00 amOPO - DCA
2 stops21h 35mAir Canada
Deal found 10/20$482
This Delta deal was found by Cheapflights users on 10/18. 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.
mar. 12/912:19 pmIAD - OPO
2 stops17h 11mDelta
mar. 12/1611:15 amOPO - IAD
2 stops17h 58mDelta
Deal found 10/18$492
This Delta deal was found by Cheapflights users on 10/18. 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.
mar. 12/92:41 pmBWI - OPO
2 stops14h 49mDelta
mar. 12/1611:15 amOPO - BWI
2 stops18h 11mDelta
Deal found 10/18$492
This KLM deal was found by Cheapflights users on 10/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/92:00 pmDCA - OPO
2 stops15h 30mMultiple Airlines
mar. 12/1611:15 amOPO - DCA
2 stops16h 42mMultiple Airlines
Deal found 10/19$492
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/56:05 pmIAD - OPO
1 stop16h 20mDelta
mar. 11/186:05 amOPO - IAD
2 stops21h 58mDelta
Deal found 10/19$493
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/106:50 pmIAD - OPO
1 stop10h 40mDelta
mié. 11/1911:25 amOPO - IAD
2 stops29h 06mDelta
Deal found 10/19$494
This United Airlines deal was found by Cheapflights users on 10/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/96:05 pmDCA - OPO
1 stop10h 25mUnited Airlines
mié. 11/1912:35 pmOPO - DCA
1 stop11h 29mUnited Airlines
Deal found 10/19$494
This KAYAK deal was found by Cheapflights users on 10/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/48:30 pmIAD - OPO
1 stop17h 00mSWISS
mié. 11/122:10 pmOPO - IAD
2 stops31h 30mSWISS
Deal found 10/19$496
This Booking.com deal was found by Cheapflights users on 10/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/19:45 amIAD - OPO
2 stops21h 20mAir Canada
lun. 12/86:00 amOPO - IAD
2 stops43h 59mAir Canada
Deal found 10/17$497

Cheap flight deals from Maryland to Portugal

Keep the following information in mind while searching for Maryland to Portugal flight deals. Data was last updated octubre 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$439
(Mytrip)

One-way from

$249
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$785
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. 4% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 octubre 20, 2025.
Use the filters below to find and compare flights from Maryland to Portugal that are best for you.

Fly from

Maryland

Fly to

Portugal

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 12/3

6:50 pm-10:30 am

1 stop10h 40m

Porto

mar. 12/9

6:05 am-4:05 pm

1 stop15h 00m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 12/9

12:19 pm-10:30 am

2 stops17h 11m

Porto

mar. 12/16

11:15 am-12:13 am

2 stops17h 58m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 12/9

2:00 pm-10:30 am

2 stops15h 30m

Porto

mar. 12/16

11:15 am-10:57 pm

2 stops16h 42m

$492

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

mar. 12/9

2:41 pm-10:30 am

2 stops14h 49m

Porto

mar. 12/16

6:05 am-11:03 pm

2 stops21h 58m

$492

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

mié. 12/3

10:47 am-10:30 am

2 stops18h 43m

Porto

mié. 12/10

11:15 am-12:22 am

2 stops18h 07m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 11/18

1:45 pm-10:30 am

2 stops15h 45m

Porto

mié. 12/10

6:00 am-5:59 pm

2 stops16h 59m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 11/18

11:10 am-10:30 am

2 stops18h 20m

Porto

mar. 12/16

6:05 am-5:59 pm

2 stops16h 54m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 12/9

12:15 pm-10:30 am

2 stops17h 15m

Porto

mar. 12/16

11:15 am-10:57 pm

2 stops16h 42m

$492

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

mar. 12/2

1:10 pm-11:15 am

2 stops17h 05m

Porto

mar. 12/9

6:00 am-9:08 pm

3 stops20h 08m

$498

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

sáb. 11/15

5:33 pm-9:30 am

1 stop10h 57m

Porto

mar. 12/16

6:00 am-3:50 pm

1 stop14h 50m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 60 results
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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, February is the cheapest month in which you can book a flight from Maryland to Portugal (average of $348). Flying from Maryland to Portugal in July is currently the most expensive (average of $724). 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.

What is the cheapest time of day to fly from MD to PT?

Find hourly flight availability from Maryland to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 20, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 35% on flights from Maryland to Portugal by exploring options for tickets at noon.

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 KLM, Delta, and United Airlines fly from Maryland to Portugal in about 10h 40m. The time it takes to get you to your destination can typically vary by up to 6h 31m. The distance from Maryland to Portugal is about 3537 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Maryland to Portugal one-way?

    The cheapest airline one-way is Royal Air Maroc, with whom users have recently found tickets for as low as $355. However, be on the lookout for offers from Scandinavian Airlines and Lufthansa, as they are both options that can get you from Maryland to Portugal for a low price.

  • 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, February is the cheapest month in which you can book a flight from Maryland to Portugal (average of $348). Flying from Maryland to Portugal in July is currently the most expensive (average of $724). 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 6 airlines flying from Maryland to Portugal

Discover the top 6 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 octubre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$345Average$391FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$529Average$935FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$670Average$993FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$704Average$852FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$748Average$923FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$771Average$969FlexibilityNo cancel feeOn-time70%

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