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$375+ Cheap flights from Porto (OPO) to Baltimore (BWI)

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BWI
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Porto to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Baltimore (BWI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$456
(Gotogate)

One-way from

$375
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$771
From Porto to Baltimore/Washington
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One-way flight from Porto to Baltimore/Washington
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Highest demand for flights based on searches. 4% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Porto to Baltimore

Cheapest flights from Porto to Baltimore
Explore the most affordable flight options available from Porto to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Gotogate deal was found by Cheapflights users on 7/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:20 pmOPO - BWI
1 stop25h 20mPLAY
Wed 10/16:50 pmBWI - OPO
1 stop20h 30mPLAY
Deal found 7/28$456
This Delta deal was found by Cheapflights users on 7/27. 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 10/86:15 amOPO - BWI
2 stops16h 19mDelta
Tue 10/215:39 pmBWI - OPO
2 stops16h 51mDelta
Deal found 7/27$573
This Mytrip deal was found by Cheapflights users on 7/27. 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.
Thu 9/1812:00 pmOPO - BWI
3 stops34h 40mMultiple Airlines
Wed 10/16:50 pmBWI - OPO
2 stops22h 45mMultiple Airlines
Deal found 7/27$595
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amOPO - BWI
2 stops19h 55mUnited Airlines
Sat 1/35:11 pmBWI - OPO
2 stops37h 29mUnited Airlines
Deal found 7/28$645
This Ovago deal was found by Cheapflights users on 7/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/189:10 pmOPO - BWI
1 stop27h 35mBritish Airways
Mon 9/19:35 pmBWI - OPO
1 stop17h 15mBritish Airways
Deal found 7/28$949
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:20 amOPO - BWI
2 stops15h 25mAmerican Airlines
Sat 1/310:51 amBWI - OPO
2 stops15h 49mAmerican Airlines
Deal found 7/29$1,099

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Baltimore 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 July 29, 2025.
Use the filters below to find and compare flights from Porto to Baltimore that are best for you.

Fly from

Porto

Fly to

Baltimore

Route

Depart

Return

Price

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/18

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Wed 10/1

6:50 pm-8:20 pm

1 stop20h 30m

$456

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 10/8

6:15 am-5:34 pm

2 stops16h 19m

Baltimore/Washington

Tue 10/21

5:39 pm-3:30 pm

2 stops16h 51m

$573

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/18

12:00 pm-5:40 pm

3 stops34h 40m

Baltimore/Washington

Wed 10/1

6:50 pm-10:35 pm

2 stops22h 45m

$595

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 12/24

6:00 am-8:55 pm

2 stops19h 55m

Baltimore/Washington

Sat 1/3

5:11 pm-11:40 am

2 stops37h 29m

$645

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 8/18

9:10 pm-7:45 pm

1 stop27h 35m

Baltimore/Washington

Mon 9/1

9:35 pm-7:50 pm

1 stop17h 15m

$949

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 12/24

8:20 am-6:45 pm

2 stops15h 25m

Baltimore/Washington

Sat 1/3

10:51 am-7:40 am

2 stops15h 49m

$1,099

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 10/12

9:50 am-5:40 pm

2 stops36h 50m

$375

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 10/12

9:05 pm-5:40 pm

1 stop25h 35m

$395

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 9/28

9:25 pm-7:45 pm

1 stop27h 20m

$572

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 10/12

4:35 pm-7:35 pm

2 stops32h 00m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 12 results
1
2

Best time to book a flight from Porto to Baltimore

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

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Scandinavian Airlines from Porto to Baltimore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,449 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
PLAY
7.0
Good
102 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

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

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

    To fly one-way, consider booking your trip with WorldTicket, which is currently one of the cheapest options available, starting at $395. British Airways flights start at $572 while deals on Iberia start at $584 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to Baltimore 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 Porto to Baltimore?

    Currently, August is the cheapest month in which you can book a flight from Porto to Baltimore (average of $241). Flying from Porto to Baltimore in March is currently the most expensive (average of $290). 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.

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