HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Baltimore

$312+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BWI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to Baltimore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$671
(British Airways)

One-way from

$312
(Kiwi.com)

Popular in

June

Cheapest in

May

Average price

$1,028
From Porto to Baltimore/Washington
Search Deals
One-way flight from Porto to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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 12/245:00 amOPO - BWI
2 stops16h 37mDelta
Sat 1/35:35 pmBWI - OPO
2 stops16h 50mDelta
Deal found 6/12$637
This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/289:10 pmOPO - BWI
1 stop27h 25mBritish Airways
Mon 8/181:12 pmBWI - OPO
2 stops21h 43mBritish Airways
Deal found 6/10$671
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3112:10 pmOPO - BWI
2 stops30h 38mUnited Airlines
Sat 8/166:15 amBWI - OPO
2 stops22h 30mUnited Airlines
Deal found 6/10$794
This Iberia deal was found by Cheapflights users on 6/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/319:55 amOPO - BWI
1 stop14h 40mMultiple Airlines
Mon 8/189:20 pmBWI - OPO
2 stops17h 35mMultiple Airlines
Deal found 6/10$866
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:40 amOPO - BWI
2 stops15h 55mIberia
Tue 10/219:20 pmBWI - OPO
2 stops13h 35mIberia
Deal found 6/12$1,245
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Thu 6/198:15 amOPO - BWI
2 stops19h 01mAmerican Airlines
Fri 10/1710:53 amBWI - OPO
2 stops15h 42mAmerican Airlines
Deal found 6/9$3,137
This Air France deal was found by Cheapflights users on 6/9. 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.
Wed 6/186:15 amOPO - BWI
2 stops15h 38mKLM
Sat 10/187:00 pmBWI - OPO
2 stops15h 35mKLM
Deal found 6/9$5,152

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 June 12, 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

Mon 7/28

9:10 pm-7:35 pm

1 stop27h 25m

Baltimore/Washington

Mon 8/18

1:12 pm-3:55 pm

2 stops21h 43m

$671

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 7/28

9:20 am-12:28 pm

2 stops32h 08m

Baltimore/Washington

Wed 8/20

9:00 am-3:30 pm

2 stops25h 30m

$719

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 7/31

12:10 pm-6:07 pm

2 stops34h 57m

Baltimore/Washington

Tue 8/19

10:51 am-9:45 am

2 stops17h 54m

$794

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 7/31

9:55 am-7:35 pm

1 stop14h 40m

Baltimore/Washington

Mon 8/18

9:20 pm-7:55 pm

2 stops17h 35m

$866

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Wed 10/8

8:40 am-7:35 pm

2 stops15h 55m

Baltimore/Washington

Tue 10/21

9:20 pm-3:55 pm

2 stops13h 35m

$1,186

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 6/24

8:15 am-10:16 pm

2 stops19h 01m

Baltimore/Washington

Fri 10/17

10:53 am-7:35 am

2 stops15h 42m

$3,891

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 6/24

6:15 am-4:32 pm

2 stops15h 17m

Baltimore/Washington

Sat 10/18

7:00 pm-3:35 pm

2 stops15h 35m

$5,694

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Sat 10/18

10:20 pm-7:33 am

2 stops38h 13m

$312

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 10/2

9:20 pm-5:40 pm

1 stop25h 20m

$503

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 10/2

9:20 pm-5:40 pm

1 stop25h 20m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 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.

Cheapflights Insights

Everything you need to know about your flight from Porto to Baltimore

Rainfall in Baltimore by month

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

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

Temperature in Baltimore by month

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

If weather is an important factor for your trip to Baltimore, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 June 12, 2025.
To help decide which airline to fly from Porto to Baltimore, see what other customers have to say about Delta, KLM and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
PLAY
7.0
Good
102 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 PLAY, which is currently one of the cheapest options available, starting at $503. WorldTicket flights start at $535 while deals on British Airways start at $543 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.