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$257+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$626
(Mytrip)

One-way from

$302
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$683
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
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From Maryland to Porto
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One-way flight from Maryland to Porto
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Highest demand for flights based on searches. 21% potential increase in price ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 2, 2025.

This Orbitz deal was found by Cheapflights users on 4/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/51:35 pmPHL - OPO
2 stops21h 25mIberia
Thu 11/138:40 pmOPO - PHL
1 stop23h 55mIberia
Deal found 4/1$545
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Tue 5/66:50 pmBWI - OPO
2 stops17h 25mMultiple Airlines
Tue 5/1310:20 pmOPO - BWI
2 stops24h 20mMultiple Airlines
Deal found 3/31$559
This Gotogate deal was found by Cheapflights users on 3/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:50 pmBWI - OPO
1 stop20h 15mPLAY
Sun 5/189:05 pmOPO - BWI
1 stop25h 35mPLAY
Deal found 3/31$586
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 8/183:30 pmPHL - OPO
2 stops15h 10mAmerican Airlines
Wed 8/278:15 amOPO - PHL
2 stops19h 04mAmerican Airlines
Deal found 4/1$586
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Wed 11/510:10 amPHL - OPO
2 stops24h 05mUnited Airlines
Thu 11/1312:30 pmOPO - PHL
3 stops59h 47mUnited Airlines
Deal found 4/1$592
This Gurufare deal was found by Cheapflights users on 4/1. 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.
Wed 11/58:00 pmPHL - OPO
1 stop10h 45mMultiple Airlines
Thu 11/138:40 pmOPO - PHL
1 stop23h 55mMultiple Airlines
Deal found 4/1$602
This FlightHub deal was found by Cheapflights users on 3/30. 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.
Mon 9/110:20 pmIAD - OPO
1 stop17h 05mTAP AIR PORTUGAL
Mon 9/86:00 pmOPO - IAD
1 stop26h 20mTAP AIR PORTUGAL
Deal found 3/30$622
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 8/186:00 amDCA - OPO
1 stop22h 35mUnited Airlines
Tue 8/2612:50 pmOPO - DCA
2 stops26h 39mUnited Airlines
Deal found 4/1$623
This United deal was found by Cheapflights users on 4/1. 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.
Tue 10/143:25 pmIAD - OPO
1 stop14h 50mUnited Airlines
Thu 10/236:00 amOPO - IAD
2 stops34h 43mUnited Airlines
Deal found 4/1$624
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Tue 5/610:05 pmIAD - OPO
2 stops19h 50mMultiple Airlines
Tue 5/132:15 pmOPO - IAD
2 stops34h 44mMultiple Airlines
Deal found 4/1$626
This Delta deal was found by Cheapflights users on 3/31. 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 9/179:20 pmIAD - OPO
1 stop13h 10mDelta
Thu 12/255:00 amOPO - IAD
1 stop15h 45mDelta
Deal found 3/31$627
This United deal was found by Cheapflights users on 3/31. 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.
Tue 8/55:15 pmDCA - OPO
1 stop31h 50mMultiple Airlines
Tue 8/1912:50 pmOPO - DCA
1 stop31h 58mMultiple Airlines
Deal found 3/31$628

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 April 2, 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

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 5/6

6:50 pm-5:15 pm

2 stops17h 25m

Porto

Tue 5/13

10:20 pm-5:40 pm

2 stops24h 20m

$559

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 5/3

6:50 pm-8:05 pm

1 stop20h 15m

Porto

Sun 5/18

9:05 pm-5:40 pm

1 stop25h 35m

$586

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 9/1

10:20 pm-8:25 pm

1 stop17h 05m

Porto

Mon 9/8

6:00 pm-3:20 pm

1 stop26h 20m

$622

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 9/14

5:20 pm-9:45 am

1 stop11h 25m

Porto

Tue 12/23

6:00 am-3:50 pm

1 stop14h 50m

$625

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 5/6

10:05 pm-10:55 pm

2 stops19h 50m

Porto

Tue 5/13

2:15 pm-7:59 pm

2 stops34h 44m

$626

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 9/17

9:20 pm-3:30 pm

1 stop13h 10m

Porto

Thu 12/25

5:00 am-3:45 pm

1 stop15h 45m

$627

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 9/24

1:00 pm-9:25 am

1 stop15h 25m

Porto

Tue 10/7

6:00 am-9:01 pm

2 stops20h 01m

$632

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 4/29

4:35 pm-11:40 am

1 stop14h 05m

Porto

Wed 5/14

8:15 am-3:00 pm

1 stop11h 45m

$637

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/30

8:45 pm-6:30 pm

1 stop16h 45m

Porto

Thu 5/15

8:40 am-4:15 pm

1 stop12h 35m

$638

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 5/5

4:35 pm-11:30 am

2 stops37h 55m

Porto

Wed 5/14

6:00 am-10:19 am

2 stops33h 19m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 month to book a flight from Maryland to Porto?

Currently, January is the cheapest month in which you can book a flight from Maryland to Porto (average of $523). Flying from Maryland to Porto in June is currently the most expensive (average of $1,081). 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 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 April 2, 2025.

When flying from Maryland to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated April 2, 2025.
Read through reviews of airlines operating flights from Maryland to Porto, such as Delta, KLM and Austrian Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,572 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    $405 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on TAP AIR PORTUGAL and Lufthansa, with prices starting from $459 and $498, 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.

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

    Currently, January is the cheapest month in which you can book a flight from Maryland to Porto (average of $523). Flying from Maryland to Porto in June is currently the most expensive (average of $1,081). 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

Traveling to a place near Maryland?

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

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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 2 airlines flying from Maryland to Porto

Discover the top 2 airlines 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$434Average$704FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$451Average$707FlexibilityNo cancel feeOn-time75%

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