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$327+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BWI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$482
(Mytrip)

One-way from

$327
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$817
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 ($30 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 September 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 pmOPO - BWI
1 stop25h 20mPLAY
Sat 10/116:50 pmBWI - OPO
1 stop20h 15mPLAY
Deal found 9/11$482
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 pmOPO - BWI
1 stop25h 20mPLAY
Wed 10/86:50 pmBWI - OPO
1 stop20h 30mPLAY
Deal found 9/10$497
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:35 amOPO - BWI
2 stops19h 56mDelta
Fri 11/147:27 pmBWI - OPO
2 stops14h 58mDelta
Deal found 9/11$565
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amOPO - BWI
2 stops17h 22mDelta
Wed 11/195:34 pmBWI - OPO
2 stops16h 51mDelta
Deal found 9/11$570
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:10 amOPO - BWI
2 stops16h 52mDelta
Wed 11/121:51 pmBWI - OPO
2 stops15h 39mDelta
Deal found 9/11$573
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amOPO - BWI
2 stops17h 40mDelta
Thu 11/1312:16 pmBWI - OPO
2 stops17h 09mDelta
Deal found 9/11$597
This Air France deal was found by Cheapflights users on 9/11. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:20 amOPO - BWI
2 stops16h 40mAir France
Wed 11/192:35 pmBWI - OPO
2 stops14h 55mAir France
Deal found 9/11$604
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/199:20 amOPO - BWI
2 stops20h 08mDelta
Tue 9/235:46 pmBWI - OPO
2 stops16h 44mDelta
Deal found 9/11$643
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:10 pmOPO - BWI
2 stops26h 45mUnited Airlines
Thu 9/2510:51 amBWI - OPO
2 stops17h 54mUnited Airlines
Deal found 9/11$671
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3111:20 amOPO - BWI
2 stops15h 42mKLM
Sat 11/87:45 pmBWI - OPO
2 stops14h 40mKLM
Deal found 9/11$674
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/125:55 amOPO - BWI
2 stops16h 45mMultiple Airlines
Fri 10/176:50 pmBWI - OPO
2 stops21h 35mMultiple Airlines
Deal found 9/11$688
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:20 amOPO - BWI
2 stops18h 45mAmerican Airlines
Tue 11/116:00 amBWI - OPO
2 stops24h 45mAmerican Airlines
Deal found 9/11$693

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 September 11, 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 9/25

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Sat 10/11

6:50 pm-8:05 pm

1 stop20h 15m

$482

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 9/25

9:20 pm-5:40 pm

1 stop25h 20m

Baltimore/Washington

Wed 10/8

6:50 pm-8:20 pm

1 stop20h 30m

$497

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 11/6

6:35 am-9:31 pm

2 stops19h 56m

Baltimore/Washington

Fri 11/14

7:27 pm-3:25 pm

2 stops14h 58m

$565

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 11/12

6:00 am-6:22 pm

2 stops17h 22m

Baltimore/Washington

Wed 11/19

5:34 pm-3:25 pm

2 stops16h 51m

$570

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 11/4

11:10 am-11:02 pm

2 stops16h 52m

Baltimore/Washington

Wed 11/12

1:51 pm-10:30 am

2 stops15h 39m

$573

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 11/5

6:00 am-6:40 pm

2 stops17h 40m

Baltimore/Washington

Thu 11/13

12:16 pm-10:25 am

2 stops17h 09m

$597

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Fri 11/14

11:20 am-11:00 pm

2 stops16h 40m

Baltimore/Washington

Wed 11/19

2:35 pm-10:30 am

2 stops14h 55m

$604

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 12/24

6:00 am-9:26 pm

2 stops20h 26m

Baltimore/Washington

Sat 1/3

5:19 pm-3:15 pm

2 stops40h 56m

$643

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Fri 10/31

11:20 am-11:02 pm

2 stops15h 42m

Baltimore/Washington

Sat 11/8

7:45 pm-3:25 pm

2 stops14h 40m

$674

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sun 10/12

5:55 am-5:40 pm

2 stops16h 45m

Baltimore/Washington

Fri 10/17

6:50 pm-9:25 pm

2 stops21h 35m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
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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.

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.

  • How long is the flight from Porto to Baltimore?

    Departing from Porto to Baltimore will take you 19h 56m. Airlines will cover a distance of 3493 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

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