How long is the flight from Porto to Baltimore?

Departing from Porto to Baltimore will take you 21h 30m. Airlines will cover a distance of 3493 mi. This flight may include one or multiple stops.

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.

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).

What is the cheapest time of day to fly from OPO to BWI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Baltimore as you normally would.

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.

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.

$534+ Flights from Porto to Baltimore

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Cheap 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 December 12, 2025.

Wed 12/2411:25 amOPO - BWI

2 stops17h 06mDelta

Sat 1/36:59 pmBWI - OPO

2 stops15h 26mDelta

Deal found 12/10

$1,596

Best flights from Porto to Baltimore
Discover carefully curated flight deals from Porto to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Thu 1/156:35 amOPO - BWI

2 stops21h 30mDelta

Wed 1/2810:54 amBWI - OPO

2 stops18h 36mDelta

Deal found 12/10

$608

Thu 2/2612:35 pmOPO - BWI

2 stops37h 52mUnited Airlines

Mon 3/26:30 amBWI - OPO

2 stops22h 00mUnited Airlines

Deal found 12/9

$615

Thu 1/155:35 pmOPO - BWI

1 stop30h 10mBritish Airways

Wed 1/288:35 pmBWI - OPO

1 stop15h 10mBritish Airways

Deal found 12/10

$711

Thu 1/89:55 pmOPO - BWI

3 stops30h 52mMultiple Airlines

Thu 1/157:40 pmBWI - OPO

2 stops14h 10mMultiple Airlines

Deal found 12/11

$1,139

Thu 1/111:20 amOPO - BWI

2 stops17h 11mAir France

Sun 1/111:02 pmBWI - OPO

2 stops16h 28mAir France

Deal found 12/10

$1,188

Thu 1/88:40 pmOPO - BWI

2 stops27h 05mBritish Airways

Thu 1/158:35 pmBWI - OPO

1 stop15h 40mBritish Airways

Deal found 12/11

$820

Thu 1/111:20 amOPO - BWI

2 stops17h 11mMultiple Airlines

Sun 1/1112:00 pmBWI - OPO

2 stops17h 30mMultiple Airlines

Deal found 12/10

$1,184

Wed 12/2411:25 amOPO - BWI

2 stops17h 06mDelta

Sat 1/36:59 pmBWI - OPO

2 stops15h 26mDelta

Deal found 12/10

$1,596

Last-minute flights from Porto to Baltimore
Discover last-minute flight deals from Porto to Baltimore. Data last updated December 12, 2025 and is based on user searches.

Wed 12/2411:25 amOPO - BWI

2 stops17h 06mDelta

Sat 1/36:59 pmBWI - OPO

2 stops15h 26mDelta

Deal found 12/10

$1,596

Thu 1/111:20 amOPO - BWI

2 stops17h 11mMultiple Airlines

Sun 1/1112:00 pmBWI - OPO

2 stops17h 30mMultiple Airlines

Deal found 12/10

$1,184

Thu 1/111:20 amOPO - BWI

2 stops17h 11mAir France

Sun 1/111:02 pmBWI - OPO

2 stops16h 28mAir France

Deal found 12/10

$1,188

Thu 1/88:40 pmOPO - BWI

2 stops27h 05mBritish Airways

Thu 1/158:35 pmBWI - OPO

1 stop15h 40mBritish Airways

Deal found 12/11

$820

Thu 1/88:40 pmOPO - BWI

2 stops27h 05mMultiple Airlines

Thu 1/158:35 pmBWI - OPO

2 stops14h 25mMultiple Airlines

Deal found 12/11

$1,006

Thu 1/156:35 amOPO - BWI

2 stops21h 30mDelta

Wed 1/2810:54 amBWI - OPO

2 stops18h 36mDelta

Deal found 12/10

$608

Thu 1/155:35 pmOPO - BWI

1 stop30h 10mBritish Airways

Wed 1/288:35 pmBWI - OPO

1 stop15h 10mBritish Airways

Deal found 12/10

$711

One-way flights from Porto to Baltimore
Search for one-way flight options from Porto to Baltimore. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Tue 12/161:00 pmOPO - BWI

2 stops34h 40mMultiple Airlines

Deal found 12/10

$534

Thu 12/189:00 pmOPO - BWI

3 stops50h 40mMultiple Airlines

Deal found 12/10

$610

Fri 12/196:30 pmOPO - BWI

3 stops29h 10mMultiple Airlines

Deal found 12/10

$631

Wed 12/176:05 amOPO - BWI

3 stops41h 35mMultiple Airlines

Deal found 12/10

$676

Sat 2/217:50 pmOPO - BWI

1 stop27h 55mMultiple Airlines

Deal found 12/10

$706

Thu 12/188:20 amOPO - BWI

2 stops15h 25mAmerican Airlines

Deal found 12/10

$795

Sat 12/201:55 pmOPO - BWI

3 stops38h 54mMultiple Airlines

Deal found 12/10

$877

Find flight deals from Porto to Baltimore

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star
Round-trip from	$608 (Delta)
One-way from	$534 (Kiwi.com)
Popular in	July
Cheapest in	May
Average price	$620

Provider with most accurate pricing for Porto-Baltimore/Washington flight deals.

Search Deals

Provider most trusted by Cheapflights users for Porto-Baltimore/Washington flights.

Search Deals

From Porto to Baltimore/Washington

Search Deals

One-way flight from Porto to Baltimore/Washington

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/15

6:35 am-11:05 pm

2 stops21h 30m

Baltimore/Washington

Wed 1/28

10:54 am-10:30 am

2 stops18h 36m

$608

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 2/26

12:35 pm-9:27 pm

2 stops37h 52m

Baltimore/Washington

Mon 3/2

6:30 am-9:30 am

2 stops22h 00m

$615

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/15

5:35 pm-6:45 pm

1 stop30h 10m

Baltimore/Washington

Wed 1/28

8:35 pm-4:45 pm

1 stop15h 10m

$711

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/8

8:40 pm-6:45 pm

2 stops27h 05m

Baltimore/Washington

Thu 1/15

8:35 pm-5:15 pm

1 stop15h 40m

$820

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/8

9:55 pm-11:47 pm

3 stops30h 52m

Baltimore/Washington

Thu 1/15

7:40 pm-2:50 pm

2 stops14h 10m

$1,139

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/1

11:20 am-11:31 pm

2 stops17h 11m

Baltimore/Washington

Sun 1/11

12:00 pm-10:30 am

2 stops17h 30m

$1,184

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 1/1

11:20 am-11:31 pm

2 stops17h 11m

Baltimore/Washington

Sun 1/11

1:02 pm-10:30 am

2 stops16h 28m

$1,188

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

$1,596

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Tue 12/16

1:00 pm-6:40 pm

2 stops34h 40m

$534

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Thu 12/18

9:00 pm-6:40 pm

3 stops50h 40m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 16 results

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

How long is the flight from Porto to Baltimore?
Departing from Porto to Baltimore will take you 21h 30m. 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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$534+ 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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Porto to Baltimore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Porto to Baltimore

Cheapest flights from Porto to BaltimoreExplore 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 December 12, 2025.

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 December 12, 2025.

Find flight deals from Porto to Baltimore

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Porto to Baltimore that are best for you.

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.

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?

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

How can I find direct flights from Porto to Baltimore?

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

Browse thousands of different options on Cheapflights for your next trip

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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 December 12, 2025.