HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$340+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LIS
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maryland to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 30, 2026.

This FlightHub deal was found by Cheapflights users on 4/29. 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 9/239:45 pm
IAD
-
OPO
1 stop37h 00m
Turkish Airlines
Thu 10/14:40 pm
OPO
-
IAD
1 stop32h 10m
Turkish Airlines
Deal found 4/29$709
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Tue 9/81:20 pm
IAD
-
OPO
1 stop21h 20m
Turkish Airlines
Tue 9/154:50 pm
OPO
-
IAD
1 stop23h 45m
Turkish Airlines
Deal found 4/28$713
This oojo deal was found by Cheapflights users on 4/28. 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 8/1610:35 pm
IAD
-
OPO
1 stop17h 00m
TAP AIR PORTUGAL
Tue 8/2510:30 pm
OPO
-
IAD
1 stop21h 40m
TAP AIR PORTUGAL
Deal found 4/28$719
This oojo deal was found by Cheapflights users on 4/28. 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.
Wed 9/99:45 pm
IAD
-
OPO
1 stop37h 00m
Turkish Airlines
Fri 9/1810:40 am
OPO
-
IAD
1 stop38h 10m
Turkish Airlines
Deal found 4/28$723
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sun 10/41:20 pm
IAD
-
OPO
1 stop21h 30m
Turkish Airlines
Tue 10/134:50 pm
OPO
-
IAD
1 stop23h 45m
Turkish Airlines
Deal found 4/26$732
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 12/274:55 pm
IAD
-
OPO
1 stop11h 10m
Delta
Mon 1/1111:15 am
OPO
-
IAD
1 stop33h 30m
Delta
Deal found 4/30$734
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Tue 12/295:25 pm
IAD
-
OPO
1 stop11h 35m
TAP AIR PORTUGAL
Wed 1/1312:25 pm
OPO
-
IAD
1 stop13h 10m
TAP AIR PORTUGAL
Deal found 4/30$735
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Sun 5/108:30 pm
IAD
-
FAO
1 stop11h 20m
Multiple Airlines
Wed 5/207:45 pm
FAO
-
IAD
2 stops24h 25m
Multiple Airlines
Deal found 4/29$736
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 12/301:00 pm
IAD
-
OPO
2 stops15h 05m
Delta
Mon 1/1111:15 am
OPO
-
IAD
1 stop33h 30m
Delta
Deal found 4/30$738
This oojo deal was found by Cheapflights users on 4/29. 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.
Wed 11/1810:30 pm
IAD
-
OPO
1 stop10h 00m
TAP AIR PORTUGAL
Sun 11/296:00 pm
OPO
-
IAD
1 stop26h 15m
TAP AIR PORTUGAL
Deal found 4/29$739
This CheapOair deal was found by Cheapflights users on 4/30. 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.
Mon 8/31:20 pm
IAD
-
OPO
1 stop21h 30m
Turkish Airlines
Thu 9/36:10 am
OPO
-
IAD
1 stop34h 25m
Turkish Airlines
Deal found 4/30$740
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:00 am
DCA
-
OPO
2 stops25h 50m
Multiple Airlines
Tue 1/128:40 pm
OPO
-
DCA
2 stops25h 28m
Multiple Airlines
Deal found 4/30$740

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 April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$709
(FlightHub)

One-way from

$340
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$871
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. 20% potential increase in price ($246 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 30, 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

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 10/21

6:00 am-7:00 am

1 stop20h 00m

Porto

Wed 10/28

6:00 am-10:26 pm

2 stops20h 26m

$772

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 8/3

12:27 pm-10:30 am

2 stops17h 03m

Porto

Thu 9/3

5:00 am-7:18 pm

2 stops19h 18m

$808

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 8/11

11:00 am-10:30 am

1 stop18h 30m

Porto

Thu 8/20

9:25 am-10:59 pm

2 stops18h 34m

$811

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 9/1

8:30 pm-10:20 pm

2 stops20h 50m

Faro

Tue 9/8

11:45 am-7:35 pm

1 stop12h 50m

$820

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 8/16

9:35 am-10:25 am

2 stops19h 50m

Porto

Tue 8/25

5:00 am-3:51 pm

2 stops15h 51m

$868

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 9/30

11:00 am-10:30 am

1 stop18h 30m

Porto

Mon 10/5

12:15 pm-11:12 pm

1 stop15h 57m

$871

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 8/10

5:00 pm-10:30 am

1 stop12h 30m

Porto

Sat 8/22

12:55 pm-11:12 pm

1 stop15h 17m

$871

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 9/8

10:10 pm-7:00 am

2 stops27h 50m

Porto

Tue 9/15

6:00 am-4:05 pm

1 stop15h 05m

$887

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 8/9

5:55 pm-9:45 am

1 stop10h 50m

Porto

Thu 8/20

11:50 am-9:48 pm

1 stop14h 58m

$887

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 7/7

12:29 pm-10:30 am

1 stop17h 01m

Porto

Wed 7/15

5:00 am-3:35 pm

1 stop15h 35m

$911

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 17h 03m. The time it takes to get you to your destination can typically vary by up to 2h 57m. The distance from Maryland to Portugal is about 3520 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maryland to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
Newark to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Gatwick flights
Newark to Athens flights
LaGuardia to Heathrow flights
Newark to Gatwick flights
John F Kennedy Intl to London City flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Istanbul flights
Newark to Lisbon flights
Los Angeles to Heathrow flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Madrid flights
Boston to Heathrow flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Orly flights
Newark to Orly flights
Newark to Barcelona-El Prat flights
John F Kennedy Intl to Dublin flights
LaGuardia to Gatwick flights
Newark to Dublin flights
John F Kennedy Intl to Athens flights
John F Kennedy Intl to Malpensa flights
John F Kennedy Intl to Madrid flights
Baltimore to Heathrow flights
Miami to Madrid flights
Los Angeles to Charles de Gaulle flights
Newark to Malpensa flights
Boston to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Heathrow flights
San Francisco to Heathrow flights
Seattle to Heathrow flights
John F Kennedy Intl to Frederic Chopin flights
Dulles Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Newark to London City flights
Dallas/Fort Worth to Heathrow flights
Boston to Gatwick flights
LaGuardia to Athens flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Athens flights

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 April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$938FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$640Average$902FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$643Average$1,077FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.