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$246+ Cheap flights from Maryland to Porto (OPO)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
1 adult, Economy
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Find flight deals from Maryland to Porto

Cheapest flights from Maryland to Porto
Explore the most affordable flight options available from Maryland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 23, 2025.

This KAYAK deal was found by Cheapflights users on 10/21. 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.
dom. 11/238:30 pmIAD - OPO
1 stop33h 45mSWISS
mié. 12/312:10 pmOPO - IAD
1 stop33h 30mSWISS
Deal found 10/21$462
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/129:45 amIAD - OPO
2 stops22h 30mMultiple Airlines
mié. 11/191:45 pmOPO - IAD
1 stop35h 20mMultiple Airlines
Deal found 10/20$463
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/510:30 pmIAD - OPO
2 stops17h 55mMultiple Airlines
vie. 12/127:00 amOPO - IAD
2 stops19h 00mMultiple Airlines
Deal found 10/20$472
This United Airlines deal was found by Cheapflights users on 10/21. 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.
lun. 11/245:33 pmIAD - OPO
1 stop10h 57mUnited Airlines
mié. 12/36:00 amOPO - IAD
1 stop14h 50mUnited Airlines
Deal found 10/21$474
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/123:30 pmPHL - OPO
2 stops16h 45mLufthansa
jue. 11/206:00 amOPO - PHL
1 stop15h 05mLufthansa
Deal found 10/22$475
This Air France deal was found by Cheapflights users on 10/21. 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. 11/246:50 pmIAD - OPO
1 stop10h 40mMultiple Airlines
lun. 12/14:10 pmOPO - IAD
1 stop28h 55mMultiple Airlines
Deal found 10/21$477
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.
lun. 11/36:50 pmIAD - OPO
1 stop10h 40mKLM
mar. 11/116:05 amOPO - IAD
1 stop15h 00mKLM
Deal found 10/20$478
This United Airlines deal was found by Cheapflights users on 10/21. 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.
mar. 11/1812:22 pmPHL - OPO
2 stops16h 08mUnited Airlines
mar. 11/256:00 amOPO - PHL
1 stop15h 05mUnited Airlines
Deal found 10/21$478
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/310:15 pmIAD - OPO
1 stop30h 15mMultiple Airlines
jue. 11/206:00 amOPO - IAD
1 stop14h 50mMultiple Airlines
Deal found 10/20$479
This Delta deal was found by Cheapflights users on 10/21. 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. 11/2412:11 pmIAD - OPO
2 stops17h 19mDelta
mié. 12/36:00 amOPO - IAD
1 stop15h 05mDelta
Deal found 10/21$482
This Booking.com deal was found by Cheapflights users on 10/22. 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.
mié. 11/123:30 pmPHL - OPO
2 stops16h 45mAir Canada
jue. 11/206:00 amOPO - PHL
2 stops21h 46mAir Canada
Deal found 10/22$482
This Air France deal was found by Cheapflights users on 10/21. 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.
mié. 11/266:05 pmIAD - OPO
1 stop23h 20mKLM
lun. 12/14:10 pmOPO - IAD
1 stop28h 55mKLM
Deal found 10/21$483

Cheap flight deals from Maryland to Porto

Keep the following information in mind while searching for Maryland to Porto flight deals. Data was last updated octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$462
(KAYAK)

One-way from

$246
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$594
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
Search Deals
From Maryland to Porto
Search Deals
One-way flight from Maryland to Porto
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 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 Porto 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 23, 2025.
Use the filters below to find and compare flights from Maryland to Porto that are best for you.

Fly from

Maryland

Fly to

Porto

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 3/4

5:34 pm-9:30 am

1 stop10h 56m

Porto

mié. 3/11

6:00 am-3:35 pm

1 stop13h 35m

$474

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

lun. 11/3

6:50 pm-10:30 am

1 stop10h 40m

Porto

mar. 11/11

6:05 am-4:05 pm

1 stop15h 00m

$478

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mar. 11/18

12:22 pm-9:30 am

2 stops16h 08m

Porto

jue. 11/27

6:00 am-4:05 pm

1 stop15h 05m

$478

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

lun. 11/3

10:15 pm-9:30 am

1 stop30h 15m

Porto

jue. 11/20

6:00 am-3:50 pm

1 stop14h 50m

$479

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 3/3

5:40 pm-9:30 am

1 stop10h 50m

Porto

jue. 3/12

6:00 am-3:54 pm

2 stops37h 54m

$480

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

lun. 11/17

1:25 pm-10:30 am

2 stops16h 05m

Porto

mié. 12/3

6:00 am-4:56 pm

2 stops15h 56m

$483

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

mar. 3/10

6:30 am-9:30 am

2 stops23h 00m

Porto

mar. 3/17

6:00 am-9:42 pm

2 stops19h 42m

$484

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 3/10

6:00 pm-9:30 am

1 stop11h 30m

Porto

mar. 3/17

6:00 am-7:33 pm

2 stops17h 33m

$484

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

dom. 3/1

6:50 pm-10:30 am

1 stop10h 40m

Porto

vie. 3/13

6:30 am-12:00 pm

2 stops33h 30m

$487

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

sáb. 2/28

5:25 pm-10:30 am

2 stops36h 05m

Porto

mar. 3/10

11:15 am-5:05 pm

1 stop33h 50m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 60 results
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Best time to book a flight from Maryland to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

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

Find hourly flight availability from Maryland to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 23, 2025.

One of the essential ways to save on airfare from Maryland to Porto is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 44% on airfare.

How much does it cost to fly round-trip from Maryland to Porto?

Related info for your journey

Find useful and relevant information for your journey from Maryland to Porto. 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 into for flights to Porto from Maryland?

    If you book a flight to Porto from Maryland, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto.

  • How long is the flight from Maryland to Porto?

    A quick flight from Maryland to Porto can take about 10h 40m. United Airlines provides one of the quickest options available for as low as $478. The distance from Maryland to Porto is about 3537 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $397 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on United Airlines and British Airways, with prices starting from $399 and $412, respectively.

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

    When deciding which route to take from Maryland to Porto consider Washington, D.C. Dulles Intl - Porto, Washington, D.C. Reagan-National - Porto or Baltimore/Washington - Porto as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maryland to Porto 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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Alternative routes for Maryland to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Maryland to Porto

Discover the top airline that operate flights from Maryland to Porto. 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$529Average$701FlexibilityNo cancel feeOn-timeN/A

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