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$242+ 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
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

This United Airlines deal was found by Cheapflights users on 11/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:20 pmIAD - OPO
2 stops17h 20mUnited Airlines
Wed 12/106:00 amOPO - IAD
2 stops19h 54mUnited Airlines
Deal found 11/18$499
This oojo deal was found by Cheapflights users on 11/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:30 pmIAD - OPO
1 stop12h 25mTAP AIR PORTUGAL
Wed 12/106:00 pmOPO - IAD
1 stop26h 15mTAP AIR PORTUGAL
Deal found 11/20$500
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:30 pmIAD - OPO
1 stop16h 30mTAP AIR PORTUGAL
Mon 12/155:55 pmOPO - IAD
1 stop25h 40mTAP AIR PORTUGAL
Deal found 11/18$509
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Wed 12/1010:30 pmIAD - OPO
1 stop13h 30mTAP AIR PORTUGAL
Wed 12/1710:55 amOPO - IAD
1 stop33h 20mTAP AIR PORTUGAL
Deal found 11/20$510
This oojo deal was found by Cheapflights users on 11/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:30 pmIAD - OPO
1 stop11h 30mTAP AIR PORTUGAL
Mon 1/58:00 pmOPO - IAD
1 stop23h 35mTAP AIR PORTUGAL
Deal found 11/19$511
This KAYAK deal was found by Cheapflights users on 11/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:20 pmIAD - OPO
1 stop33h 35mSWISS
Mon 12/2212:05 pmOPO - IAD
1 stop33h 35mSWISS
Deal found 11/20$514
This FlightHub deal was found by Cheapflights users on 11/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:30 pmIAD - OPO
1 stop13h 30mTAP AIR PORTUGAL
Sun 11/309:55 amOPO - IAD
1 stop16h 05mTAP AIR PORTUGAL
Deal found 11/19$523
This Gurufare deal was found by Cheapflights users on 11/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:30 pmIAD - OPO
1 stop12h 25mTAP AIR PORTUGAL
Mon 12/158:00 pmOPO - IAD
1 stop23h 35mTAP AIR PORTUGAL
Deal found 11/18$524
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:40 pmBWI - LIS
2 stops16h 05mMultiple Airlines
Tue 12/98:55 pmLIS - BWI
2 stops26h 45mMultiple Airlines
Deal found 11/18$526
This CheapOair deal was found by Cheapflights users on 11/20. 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.
Fri 12/59:45 amIAD - OPO
2 stops21h 20mMultiple Airlines
Wed 12/106:00 amOPO - IAD
1 stop13h 35mMultiple Airlines
Deal found 11/20$527
This Travelocity deal was found by Cheapflights users on 11/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:30 pmIAD - OPO
1 stop17h 05mMultiple Airlines
Tue 12/166:00 amOPO - IAD
1 stop14h 50mMultiple Airlines
Deal found 11/18$528
This KAYAK deal was found by Cheapflights users on 11/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:30 pmIAD - OPO
1 stop33h 40mSWISS
Mon 12/1512:05 pmOPO - IAD
1 stop33h 35mSWISS
Deal found 11/18$532

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 November 20, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$438
(Mytrip)

One-way from

$242
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$825
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. 6% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 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

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/15

6:32 am-9:30 am

2 stops22h 58m

Porto

Tue 3/31

6:00 am-4:00 pm

1 stop15h 00m

$485

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

9:55 am-9:30 am

2 stops19h 35m

Porto

Thu 4/2

6:00 am-9:51 am

2 stops32h 51m

$489

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/23

8:00 am-9:30 am

2 stops21h 30m

Porto

Thu 4/2

6:00 am-9:51 am

2 stops32h 51m

$489

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 1/14

12:00 pm-10:30 am

2 stops17h 30m

Porto

Thu 1/22

11:15 am-12:45 am

2 stops18h 30m

$492

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/10

8:20 am-11:40 am

2 stops22h 20m

Porto

Thu 2/19

6:00 am-2:35 pm

1 stop13h 35m

$493

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/10

12:40 pm-11:40 am

2 stops18h 00m

Porto

Wed 2/18

6:00 am-2:35 pm

1 stop13h 35m

$493

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

5:00 pm-11:15 am

2 stops38h 15m

Porto

Mon 3/30

7:20 pm-9:23 pm

2 stops31h 03m

$497

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 2/10

11:05 am-11:15 am

2 stops19h 10m

Porto

Wed 2/18

6:00 am-9:58 pm

2 stops44h 58m

$498

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

3:30 pm-12:05 pm

2 stops16h 35m

Porto

Mon 3/30

4:35 pm-4:00 pm

1 stop28h 25m

$499

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

6:00 am-10:30 am

2 stops24h 30m

Porto

Mon 3/30

4:20 pm-9:17 pm

2 stops33h 57m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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 $716). 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 November 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 United Airlines, SWISS, and Air Canada fly from Maryland to Portugal in about 19h 10m. The time it takes to get you to your destination can typically vary by up to 19h 05m. The distance from Maryland to Portugal is about 3520 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 Scandinavian Airlines, with whom users have recently found tickets for as low as $295. However, be on the lookout for offers from Royal Air Maroc and Air Canada, 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 $716). 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$345Average$396FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$529Average$963FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$641Average$978FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$701Average$1,298FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$748Average$923FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$771Average$1,040FlexibilityNo cancel feeOn-time70%

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