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$390+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BWI
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$615
(United Airlines)

One-way from

$390
(Kiwi.com)

Popular in

January

Cheapest in

May

Average price

$684
Provider with most accurate pricing for Porto-Baltimore/Washington flight deals.
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Provider most trusted by Cheapflights users for Porto-Baltimore/Washington flights.
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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. 14% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 11/146:00 amOPO - BWI
2 stops32h 59mUnited Airlines
Thu 11/2010:56 amBWI - OPO
2 stops17h 34mUnited Airlines
Deal found 10/28$615
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:00 amOPO - BWI
2 stops21h 02mDelta
Wed 11/55:00 pmBWI - OPO
2 stops17h 25mDelta
Deal found 10/29$646
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:35 pmOPO - BWI
2 stops26h 24mUnited Airlines
Mon 12/16:15 amBWI - OPO
2 stops24h 25mUnited Airlines
Deal found 10/29$656
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:35 pmOPO - BWI
2 stops26h 24mUnited Airlines
Sun 11/3010:56 amBWI - OPO
2 stops19h 44mUnited Airlines
Deal found 10/29$796
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/114:55 pmOPO - BWI
1 stop30h 50mBritish Airways
Fri 12/268:35 pmBWI - OPO
1 stop17h 25mBritish Airways
Deal found 10/28$799
This Rumbo deal was found by Cheapflights users on 10/28. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:05 pmOPO - BWI
1 stop29h 40mBritish Airways
Sun 11/238:35 pmBWI - OPO
1 stop15h 05mBritish Airways
Deal found 10/28$836
This KLM deal was found by Cheapflights users on 10/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:30 amOPO - BWI
2 stops17h 33mKLM
Mon 12/17:27 pmBWI - OPO
2 stops14h 58mKLM
Deal found 10/29$863
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/228:20 amOPO - BWI
2 stops16h 10mMultiple Airlines
Sun 4/59:30 pmBWI - OPO
1 stop17h 50mMultiple Airlines
Deal found 10/28$961
This Air France deal was found by Cheapflights users on 10/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:20 amOPO - BWI
2 stops16h 42mAir France
Sun 11/232:35 pmBWI - OPO
2 stops14h 55mAir France
Deal found 10/28$981
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:35 amOPO - BWI
3 stops33h 15mMultiple Airlines
Thu 11/207:30 amBWI - OPO
3 stops23h 20mMultiple Airlines
Deal found 10/28$1,003
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:20 amOPO - BWI
2 stops15h 25mIberia
Sat 1/38:35 pmBWI - OPO
2 stops14h 25mIberia
Deal found 10/28$1,163

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 October 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

Fri 11/14

6:00 am-9:59 am

2 stops32h 59m

Baltimore/Washington

Thu 11/20

10:56 am-9:30 am

2 stops17h 34m

$615

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 11/24

12:35 pm-9:59 am

2 stops26h 24m

Baltimore/Washington

Mon 12/1

6:15 am-11:40 am

2 stops24h 25m

$656

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 11/24

12:35 pm-9:59 am

2 stops26h 24m

Baltimore/Washington

Sun 11/30

10:56 am-11:40 am

2 stops19h 44m

$796

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 12/11

4:55 pm-6:45 pm

1 stop30h 50m

Baltimore/Washington

Fri 12/26

8:35 pm-7:00 pm

1 stop17h 25m

$799

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 11/24

6:30 am-7:03 pm

2 stops17h 33m

Baltimore/Washington

Mon 12/1

7:27 pm-3:25 pm

2 stops14h 58m

$863

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sat 11/22

8:20 am-7:30 pm

2 stops16h 10m

Baltimore/Washington

Sun 4/5

9:30 pm-8:20 pm

1 stop17h 50m

$961

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Fri 11/14

11:35 am-3:50 pm

3 stops33h 15m

Baltimore/Washington

Thu 11/20

7:30 am-11:50 am

3 stops23h 20m

$1,003

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 12/24

8:20 am-6:45 pm

2 stops15h 25m

Baltimore/Washington

Sat 1/3

8:35 pm-4:00 pm

2 stops14h 25m

$1,163

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 12/11

7:35 am-7:32 pm

2 stops16h 57m

Baltimore/Washington

Fri 12/26

6:59 pm-3:25 pm

2 stops15h 26m

$1,169

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 12/24

11:25 am-11:31 pm

2 stops17h 06m

Baltimore/Washington

Sat 1/3

6:59 pm-3:25 pm

2 stops15h 26m

$1,215

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 19 results
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  • Most accurate provider: When it comes to deals on Porto-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Baltimore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto-Baltimore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 17h 33m. 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.

See more FAQs

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