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$365+ Cheap flights from Porto (OPO) to Maryland

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BWI
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Porto to Maryland

Cheapest flights from Porto to Maryland
Explore the most affordable flight options available from Porto to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Air France deal was found by Cheapflights users on 12/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:30 amOPO - IAD
1 stop14h 35mMultiple Airlines
mié. 12/316:50 pmIAD - OPO
1 stop10h 40mMultiple Airlines
Deal found 12/10$648
This Air France deal was found by Cheapflights users on 12/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:30 amOPO - DCA
2 stops15h 35mMultiple Airlines
mié. 12/312:25 pmDCA - OPO
2 stops15h 05mMultiple Airlines
Deal found 12/10$654
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:30 amOPO - IAD
2 stops17h 49mDelta
mié. 12/3112:32 pmIAD - OPO
2 stops16h 58mDelta
Deal found 12/10$664
This American Airlines deal was found by Cheapflights users on 12/9. 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.
lun. 12/298:20 amOPO - DCA
2 stops17h 39mAmerican Airlines
mar. 1/1311:25 amDCA - OPO
2 stops15h 15mAmerican Airlines
Deal found 12/9$764
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/246:00 amOPO - IAD
1 stop19h 15mUnited Airlines
sáb. 1/310:05 pmIAD - OPO
1 stop31h 30mUnited Airlines
Deal found 12/10$815
This Ovago deal was found by Cheapflights users on 12/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/228:40 pmOPO - PHL
1 stop23h 55mMultiple Airlines
lun. 12/297:50 pmPHL - OPO
1 stop30h 50mMultiple Airlines
Deal found 12/10$891
This American Airlines deal was found by Cheapflights users on 12/10. 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.
lun. 12/228:40 pmOPO - PHL
1 stop23h 55mAmerican Airlines
lun. 12/298:45 amPHL - OPO
2 stops17h 55mAmerican Airlines
Deal found 12/10$937
This KLM deal was found by Cheapflights users on 12/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3111:25 amOPO - DCA
2 stops16h 25mKLM
lun. 1/121:40 pmDCA - OPO
2 stops15h 50mKLM
Deal found 12/9$967
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/241:45 pmOPO - IAD
2 stops29h 50mLufthansa
sáb. 1/310:05 pmIAD - OPO
1 stop15h 00mLufthansa
Deal found 12/11$967
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/228:20 amOPO - PHL
2 stops17h 07mIberia
lun. 12/297:51 pmPHL - OPO
1 stop30h 49mIberia
Deal found 12/11$1,013
This KLM deal was found by Cheapflights users on 12/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3111:25 amOPO - DCA
2 stops16h 25mKLM
dom. 1/117:30 pmDCA - OPO
2 stops14h 55mKLM
Deal found 12/9$1,020
This KLM deal was found by Cheapflights users on 12/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3011:25 amOPO - DCA
2 stops16h 25mKLM
lun. 1/121:40 pmDCA - OPO
2 stops15h 50mKLM
Deal found 12/9$1,048

Find flight deals from Porto to Maryland

Keep the following information in mind while searching for Porto to Maryland flight deals. Data was last updated diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$513
(Mytrip)

One-way from

$365
(American Airlines)

Popular in

July

Cheapest in

May

Average price

$620
Provider with most accurate pricing for Porto-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto-Washington, D.C. (WAS) flights.
Search Deals
From Porto to Maryland
Search Deals
One-way flight from Porto to Maryland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Maryland 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 diciembre 12, 2025.
Use the filters below to find and compare flights from Porto to Maryland that are best for you.

Fly from

Porto

Fly to

Maryland

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

jue. 1/15

6:00 pm-9:00 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

mié. 1/28

10:30 pm-9:55 am

1 stop30h 25m

$513

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

jue. 1/15

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

mié. 1/28

4:15 pm-11:10 am

2 stops37h 55m

$590

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

jue. 1/15

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

mié. 1/28

5:15 pm-11:40 am

1 stop13h 25m

$591

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

jue. 3/5

6:00 am-6:05 pm

2 stops41h 05m

Washington, D.C. Reagan-National

lun. 3/9

6:00 pm-9:30 am

1 stop11h 30m

$593

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

jue. 3/5

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

lun. 3/9

4:15 pm-6:30 pm

2 stops46h 15m

$596

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

jue. 1/15

6:00 am-8:55 am

2 stops31h 55m

Washington, D.C. Reagan-National

mié. 1/28

6:50 pm-3:25 pm

2 stops15h 35m

$604

PortoBaltimore

OPO - BWI

OPOBWI

Porto

jue. 1/15

6:35 am-11:05 pm

2 stops21h 30m

Baltimore/Washington

mié. 1/28

10:54 am-10:30 am

2 stops18h 36m

$608

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

vie. 1/23

12:30 pm-2:35 pm

1 stop31h 05m

Washington, D.C. Dulles Intl

dom. 1/25

6:00 am-11:40 am

3 stops24h 40m

$611

PortoBaltimore

OPO - BWI

OPOBWI

Porto

jue. 2/26

12:35 pm-9:27 pm

2 stops37h 52m

Baltimore/Washington

lun. 3/2

6:30 am-9:30 am

2 stops22h 00m

$615

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

jue. 1/15

6:35 am-4:05 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

mié. 1/28

12:23 pm-10:30 am

2 stops17h 07m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 49 results
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Best time to book a flight from Porto to Maryland

Have a flexible travel schedule? Discover the best time to fly to Maryland from Porto 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 Porto to Maryland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Porto to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to Maryland?

    Located just 6.8 mi from the city center, Porto (OPO) is the airport most travelers will use when flying to Maryland from Porto.

  • How long is the flight from Porto to Maryland?

    Airlines like TAP AIR PORTUGAL, Air Canada, and United Airlines fly from Porto to Maryland in about 14h 50m. The time it takes to get you to your destination can typically vary by up to 17h 10m. Porto and Maryland are separated by a distance of 3537 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Porto to Maryland?

    The most popular flight routes from Porto to Maryland are Porto - Washington, D.C. Dulles Intl, Porto - Washington, D.C. Reagan-National and Porto - Baltimore/Washington.

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

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

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

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

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

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

See more FAQs

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