How long is the flight from Maryland to Portugal?

Airlines like SWISS, United Airlines, and KLM 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 3h 10m. The distance from Maryland to Portugal is about 3537 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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.

$245+ Flights from Maryland to Portugal

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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 December 12, 2025.

Tue 12/309:45 pmIAD - OPO

1 stop15h 00mBritish Airways

Wed 1/76:35 pmOPO - IAD

1 stop26h 00mBritish Airways

Deal found 12/10

$752

Wed 12/105:20 pmIAD - OPO

1 stop33h 35mSWISS

Wed 12/1712:10 pmOPO - IAD

1 stop33h 30mSWISS

Deal found 12/9

$761

Wed 12/106:05 pmIAD - OPO

1 stop11h 25mKLM

Wed 12/1711:15 amOPO - IAD

1 stop33h 50mKLM

Deal found 12/9

$783

Tue 12/301:44 pmDCA - OPO

2 stops23h 01mBritish Airways

Wed 1/76:35 pmOPO - DCA

2 stops27h 15mBritish Airways

Deal found 12/10

$785

Wed 12/1011:58 amIAD - OPO

2 stops17h 32mDelta

Wed 12/176:00 amOPO - IAD

1 stop15h 05mDelta

Deal found 12/9

$788

Wed 12/1010:55 pmIAD - OPO

2 stops31h 45mMultiple Airlines

Wed 12/177:20 pmOPO - IAD

1 stop25h 10mMultiple Airlines

Deal found 12/9

$819

Wed 12/106:10 pmIAD - OPO

2 stops36h 30mUnited Airlines

Wed 12/176:00 amOPO - IAD

2 stops20h 25mUnited Airlines

Deal found 12/9

$820

Wed 12/3110:30 pmIAD - LIS

Nonstop7h 05mTAP AIR PORTUGAL

Sat 1/109:00 pmLIS - IAD

2 stops39h 20mTAP AIR PORTUGAL

Deal found 12/11

$842

Thu 12/113:54 pmDCA - OPO

2 stops20h 21mBritish Airways

Thu 12/188:20 amOPO - DCA

2 stops18h 40mBritish Airways

Deal found 12/10

$880

Sat 12/138:45 pmIAD - OPO

1 stop15h 10mMultiple Airlines

Mon 2/28:40 pmOPO - IAD

2 stops28h 15mMultiple Airlines

Deal found 12/10

$888

Thu 12/116:10 pmIAD - OPO

2 stops36h 30mUnited Airlines

Wed 12/176:00 amOPO - IAD

2 stops37h 00mUnited Airlines

Deal found 12/10

$895

Mon 12/158:45 pmIAD - LIS

1 stop15h 10mRoyal Air Maroc

Tue 12/235:55 pmLIS - IAD

1 stop29h 50mRoyal Air Maroc

Deal found 12/11

$932

Best flights from Maryland to Portugal
Discover carefully curated flight deals from Maryland to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Tue 3/245:25 pmIAD - OPO

1 stop13h 50mSWISS

Tue 3/318:40 amOPO - IAD

1 stop12h 40mSWISS

Deal found 12/11

$463

Tue 3/245:35 pmIAD - OPO

1 stop11h 55mUnited Airlines

Tue 3/316:00 amOPO - IAD

1 stop18h 55mUnited Airlines

Deal found 12/10

$476

Tue 3/107:50 pmIAD - OPO

1 stop10h 40mKLM

Mon 3/1611:15 amOPO - IAD

1 stop33h 50mKLM

Deal found 12/10

$478

Sun 1/186:50 pmIAD - OPO

1 stop10h 40mDelta

Mon 1/2611:15 amOPO - IAD

1 stop33h 50mDelta

Deal found 12/10

$478

Tue 2/2412:35 pmIAD - OPO

2 stops16h 55mMultiple Airlines

Tue 3/34:10 pmOPO - IAD

1 stop28h 55mMultiple Airlines

Deal found 12/11

$482

Tue 3/244:15 pmDCA - OPO

2 stops15h 50mAir Canada

Tue 3/316:00 amOPO - DCA

2 stops18h 53mAir Canada

Deal found 12/11

$489

Wed 3/43:30 pmPHL - OPO

2 stops16h 45mLufthansa

Wed 3/1112:30 pmOPO - PHL

1 stop32h 35mLufthansa

Deal found 12/10

$526

Sat 1/174:45 pmBWI - LIS

2 stops18h 20mScandinavian Airlines

Wed 1/217:00 pmLIS - BWI

2 stops32h 02mScandinavian Airlines

Deal found 12/10

$556

Mon 1/199:15 pmIAD - LIS

1 stop32h 25mTurkish Airlines

Sun 1/256:05 amLIS - IAD

1 stop34h 40mTurkish Airlines

Deal found 12/11

$644

Tue 2/249:30 pmPHL - LIS

Nonstop6h 35mFinnair

Wed 3/411:05 amLIS - PHL

Nonstop8h 20mFinnair

Deal found 12/10

$665

Wed 5/1310:00 amPHL - LIS

1 stop19h 20mTAP AIR PORTUGAL

Sun 5/176:05 pmLIS - PHL

1 stop20h 08mTAP AIR PORTUGAL

Deal found 12/11

$699

Wed 3/187:25 pmPHL - LIS

2 stops15h 25mBritish Airways

Tue 3/316:45 pmLIS - PHL

2 stops24h 15mBritish Airways

Deal found 12/10

$708

Sat 3/77:40 pmBWI - LIS

1 stop19h 40mIcelandair

Sat 3/144:05 pmLIS - BWI

2 stops31h 35mIcelandair

Deal found 12/11

$926

Tue 3/2412:15 pmPHL - OPO

2 stops17h 15mUnited Airlines

Tue 3/316:00 amOPO - PHL

1 stop15h 00mUnited Airlines

Deal found 12/10

$480

Tue 3/245:25 pmIAD - OPO

1 stop13h 50mSWISS

Mon 3/307:20 pmOPO - IAD

1 stop26h 00mSWISS

Deal found 12/11

$482

Tue 2/2412:38 pmIAD - OPO

2 stops16h 52mKLM

Tue 3/35:00 amOPO - IAD

1 stop16h 05mKLM

Deal found 12/10

$482

Mon 1/1912:23 pmIAD - OPO

2 stops17h 07mDelta

Mon 1/2611:15 amOPO - IAD

1 stop33h 50mDelta

Deal found 12/10

$482

Tue 3/241:13 pmIAD - OPO

2 stops18h 52mMultiple Airlines

Mon 3/307:20 pmOPO - IAD

1 stop24h 55mMultiple Airlines

Deal found 12/11

$486

Mon 1/1212:23 pmIAD - OPO

2 stops17h 07mDelta

Mon 1/2611:15 amOPO - IAD

1 stop33h 50mDelta

Deal found 12/10

$484

Tue 3/248:09 amBWI - OPO

2 stops21h 21mUnited Airlines

Tue 3/316:00 amOPO - BWI

2 stops20h 33mUnited Airlines

Deal found 12/10

$486

Tue 3/243:30 pmPHL - OPO

2 stops16h 35mMultiple Airlines

Tue 3/316:00 amOPO - PHL

2 stops21h 53mMultiple Airlines

Deal found 12/10

$489

Sun 3/2212:50 pmPHL - OPO

2 stops17h 40mKLM

Wed 4/111:45 amOPO - PHL

2 stops18h 04mKLM

Deal found 12/10

$497

Tue 3/248:10 pmDCA - OPO

1 stop9h 20mUnited Airlines

Tue 3/316:00 amOPO - DCA

2 stops18h 46mUnited Airlines

Deal found 12/10

$486

Mon 1/121:45 pmDCA - OPO

2 stops20h 40mDelta

Mon 1/2611:15 amOPO - DCA

2 stops34h 04mDelta

Deal found 12/10

$489

Tue 2/2412:59 pmDCA - OPO

2 stops16h 31mMultiple Airlines

Tue 3/35:00 amOPO - DCA

2 stops16h 27mMultiple Airlines

Deal found 12/11

$492

Mon 1/1910:25 amDCA - OPO

2 stops19h 05mDelta

Mon 1/2611:15 amOPO - DCA

2 stops34h 14mDelta

Deal found 12/10

$492

Tue 2/244:10 pmDCA - OPO

1 stop12h 20mUnited Airlines

Tue 3/312:35 pmOPO - DCA

1 stop12h 00mUnited Airlines

Deal found 12/10

$495

Sun 3/226:40 pmPHL - OPO

1 stop16h 35mMultiple Airlines

Wed 4/18:40 amOPO - PHL

2 stops36h 20mMultiple Airlines

Deal found 12/10

$501

Sun 2/1511:06 amDCA - LIS

2 stops23h 34mScandinavian Airlines

Mon 2/236:45 amLIS - DCA

2 stops20h 23mScandinavian Airlines

Deal found 12/10

$676

Sat 1/248:40 amPHL - LIS

1 stop20h 15mTAP AIR PORTUGAL

Sat 1/315:15 pmLIS - PHL

1 stop30h 08mTAP AIR PORTUGAL

Deal found 12/10

$705

Last-minute flights from Maryland to Portugal
Discover last-minute flight deals from Maryland to Portugal. Data last updated December 12, 2025 and is based on user searches.

Mon 1/125:25 pmIAD - OPO

1 stop12h 50mSWISS

Mon 1/2612:05 pmOPO - IAD

1 stop32h 25mSWISS

Deal found 12/8

$434

Mon 1/125:45 pmIAD - OPO

1 stop13h 20mBrussels Airlines

Mon 1/2612:55 pmOPO - IAD

1 stop30h 40mBrussels Airlines

Deal found 12/10

$447

Mon 1/1212:23 pmIAD - OPO

2 stops17h 07mDelta

Mon 1/2611:15 amOPO - IAD

1 stop33h 50mDelta

Deal found 12/8

$484

Wed 1/1410:15 pmIAD - OPO

2 stops31h 55mSWISS

Thu 1/2212:05 pmOPO - IAD

1 stop32h 05mSWISS

Deal found 12/11

$442

Wed 1/145:45 pmIAD - OPO

1 stop13h 20mMultiple Airlines

Thu 1/2212:05 pmOPO - IAD

1 stop32h 05mMultiple Airlines

Deal found 12/10

$458

Wed 1/146:00 amDCA - OPO

2 stops24h 15mMultiple Airlines

Thu 1/226:00 amOPO - DCA

2 stops31h 55mMultiple Airlines

Deal found 12/11

$471

Wed 1/145:40 pmIAD - OPO

1 stop14h 35mLufthansa

Thu 1/226:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 12/11

$475

Wed 1/141:15 pmIAD - OPO

2 stops19h 00mAir Canada

Thu 1/226:00 amOPO - IAD

2 stops39h 30mAir Canada

Deal found 12/11

$488

Sun 1/183:30 pmPHL - OPO

2 stops15h 35mAir Canada

Mon 2/26:00 amOPO - PHL

2 stops37h 47mAir Canada

Deal found 12/10

$479

Mon 1/196:50 pmIAD - OPO

1 stop10h 40mDelta

Mon 1/2611:15 amOPO - IAD

1 stop33h 50mDelta

Deal found 12/10

$478

Mon 1/199:45 amIAD - OPO

2 stops21h 20mMultiple Airlines

Mon 2/237:20 pmOPO - IAD

1 stop24h 45mMultiple Airlines

Deal found 12/9

$485

Wed 1/215:45 pmIAD - OPO

1 stop13h 20mMultiple Airlines

Wed 1/2812:10 pmOPO - IAD

1 stop32h 20mMultiple Airlines

Deal found 12/8

$464

One-way flights from Maryland to Portugal
Search for one-way flight options from Maryland to Portugal. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Fri 1/234:01 pmBWI - LIS

2 stops36h 04mMultiple Airlines

Deal found 12/10

$245

Mon 1/265:30 pmIAD - FNC

3 stops36h 30mMultiple Airlines

Deal found 12/9

$262

Mon 1/126:06 pmPHL - LIS

2 stops57h 59mMultiple Airlines

Deal found 12/10

$268

Tue 3/2410:57 amBWI - LIS

2 stops28h 13mMultiple Airlines

Deal found 12/10

$275

Fri 1/239:35 amIAD - FNC

2 stops32h 15mMultiple Airlines

Deal found 12/9

$277

Thu 1/225:37 pmBWI - LIS

3 stops58h 28mMultiple Airlines

Deal found 12/11

$281

Mon 3/98:30 amPHL - LIS

2 stops24h 50mMultiple Airlines

Deal found 12/11

$281

Sun 2/810:45 pmPHL - LIS

3 stops39h 55mMultiple Airlines

Deal found 12/11

$282

Mon 2/91:31 pmIAD - LIS

3 stops25h 09mMultiple Airlines

Deal found 12/11

$282

Wed 1/2110:30 pmIAD - FNC

3 stops43h 10mMultiple Airlines

Deal found 12/9

$284

Sat 1/107:12 pmPHL - LIS

3 stops56h 18mMultiple Airlines

Deal found 12/10

$285

Sat 1/172:58 pmIAD - LIS

2 stops41h 22mMultiple Airlines

Deal found 12/10

$285

Find flight deals from Maryland to Portugal

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$434 (Kiwi.com)
One-way from	$245 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$1,391

Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.

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From Maryland to Portugal

Search Deals

One-way flight from Maryland to Portugal

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($48 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/24

5:25 pm-11:15 am

1 stop13h 50m

Porto

Tue 3/31

8:40 am-4:20 pm

1 stop12h 40m

$463

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/24

5:35 pm-9:30 am

1 stop11h 55m

Porto

Tue 3/31

6:00 am-7:55 pm

1 stop18h 55m

$476

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/10

7:50 pm-10:30 am

1 stop10h 40m

Porto

Mon 3/16

11:15 am-5:05 pm

1 stop33h 50m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 1/18

6:50 pm-10:30 am

1 stop10h 40m

Porto

Mon 1/26

11:15 am-4:05 pm

1 stop33h 50m

$478

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

12:15 pm-9:30 am

2 stops17h 15m

Porto

Tue 3/31

6:00 am-4:00 pm

1 stop15h 00m

$480

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/24

12:35 pm-10:30 am

2 stops16h 55m

Porto

Tue 3/3

4:10 pm-4:05 pm

1 stop28h 55m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 3/24

5:25 pm-11:15 am

1 stop13h 50m

Porto

Mon 3/30

7:20 pm-4:20 pm

1 stop26h 00m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/24

12:38 pm-10:30 am

2 stops16h 52m

Porto

Tue 3/3

5:00 am-4:05 pm

1 stop16h 05m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 1/19

12:23 pm-10:30 am

2 stops17h 07m

Porto

Mon 1/26

11:15 am-4:05 pm

1 stop33h 50m

$482

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 1/12

12:23 pm-10:30 am

2 stops17h 07m

Porto

Mon 1/26

11:15 am-4:05 pm

1 stop33h 50m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 60 results

...

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 $346). 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?

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

How long is the flight from Maryland to Portugal?
Airlines like SWISS, United Airlines, and KLM 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 3h 10m. 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, February is the cheapest month in which you can book a flight from Maryland to Portugal (average of $346). 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

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Maryland to Portugal

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$345	Average$396	FlexibilityNo cancel fee	On-timeN/A
Delta	Cheapest$529	Average$922	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$679	Average$1,004	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$701	Average$1,398	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$748	Average$923	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$771	Average$974	FlexibilityNo cancel fee	On-time70%

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$245+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Maryland to Portugal

Cheapest flights from Maryland to PortugalExplore 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 December 12, 2025.

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 December 12, 2025.

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 December 12, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Maryland to Portugal that are best for you.

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.

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?

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 December 12, 2025.

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?

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

How can I find direct flights from Maryland to Portugal?

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

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

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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.

Top 6 airlines flying from Maryland to Portugal

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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 December 12, 2025.