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$277+ Cheap flights from Baltimore (BWI) to Porto (OPO)

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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Baltimore to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Porto (OPO). 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

$650
(United Airlines)

One-way from

$277
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$871
From Baltimore/Washington to Porto
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One-way flight from Baltimore/Washington to Porto
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Highest demand for flights based on searches. 20% potential increase in price ($195 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Baltimore to Porto

Cheapest flights from Baltimore to Porto
Explore the most affordable flight options available from Baltimore to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

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.
Wed 11/1910:56 amBWI - OPO
2 stops19h 44mUnited Airlines
Wed 11/266:00 amOPO - BWI
2 stops32h 59mUnited Airlines
Deal found 6/10$515
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:30 pmBWI - OPO
2 stops30h 10mBritish Airways
Fri 11/78:40 pmOPO - BWI
2 stops51h 05mBritish Airways
Deal found 6/12$578
This Delta deal was found by Cheapflights users on 6/11. 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 10/145:30 pmBWI - OPO
2 stops17h 00mDelta
Thu 10/2311:35 amOPO - BWI
2 stops17h 37mDelta
Deal found 6/11$625
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:50 pmBWI - OPO
1 stop20h 15mPLAY
Thu 9/119:20 pmOPO - BWI
1 stop25h 20mPLAY
Deal found 6/10$652
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/179:20 pmBWI - OPO
2 stops33h 20mIberia
Sat 10/258:35 pmOPO - BWI
2 stops28h 10mIberia
Deal found 6/11$718
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/201:51 pmBWI - OPO
1 stop16h 04mMultiple Airlines
Sun 9/285:45 pmOPO - BWI
1 stop18h 48mMultiple Airlines
Deal found 6/12$728
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/76:25 pmBWI - OPO
2 stops16h 05mAir France
Sat 7/199:20 amOPO - BWI
2 stops18h 58mAir France
Deal found 6/12$821
This KLM deal was found by Cheapflights users on 6/11. 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 7/117:18 pmBWI - OPO
2 stops15h 17mKLM
Fri 7/189:20 amOPO - BWI
2 stops18h 28mKLM
Deal found 6/11$842
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:24 amBWI - OPO
2 stops19h 16mAmerican Airlines
Mon 10/68:15 amOPO - BWI
2 stops19h 02mAmerican Airlines
Deal found 6/10$903
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:50 pmBWI - OPO
1 stop20h 15mWorldTicket
Sun 9/219:05 pmOPO - BWI
1 stop25h 35mWorldTicket
Deal found 6/10$956

Cheapflights Fare Finder

Customize your flight search to find flights from Baltimore to Porto 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 Baltimore to Porto that are best for you.

Fly from

Baltimore

Fly to

Porto

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/19

10:56 am-11:40 am

2 stops19h 44m

Porto

Wed 11/26

6:00 am-9:59 am

2 stops32h 59m

$515

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 11/2

8:30 pm-7:40 am

2 stops30h 10m

Porto

Fri 11/7

8:40 pm-6:45 pm

2 stops51h 05m

$578

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 10/14

5:30 pm-3:30 pm

2 stops17h 00m

Porto

Thu 10/23

11:35 am-12:12 am

2 stops17h 37m

$625

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 8/29

6:50 pm-8:05 pm

1 stop20h 15m

Porto

Thu 9/11

9:20 pm-5:40 pm

1 stop25h 20m

$652

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 10/17

9:20 pm-11:40 am

2 stops33h 20m

Porto

Sat 10/25

8:35 pm-7:45 pm

2 stops28h 10m

$718

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 9/20

1:51 pm-10:55 am

1 stop16h 04m

Porto

Sun 9/28

5:45 pm-7:33 am

1 stop18h 48m

$728

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 7/7

6:25 pm-3:30 pm

2 stops16h 05m

Porto

Sat 7/19

9:20 am-11:18 pm

2 stops18h 58m

$821

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 7/11

7:18 pm-3:35 pm

2 stops15h 17m

Porto

Fri 7/18

9:20 am-10:48 pm

2 stops18h 28m

$842

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 10/2

11:24 am-11:40 am

2 stops19h 16m

Porto

Mon 10/6

8:15 am-10:17 pm

2 stops19h 02m

$903

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 9/13

6:50 pm-8:05 pm

1 stop20h 15m

Porto

Sun 9/21

9:05 pm-5:40 pm

1 stop25h 35m

$956

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Baltimore to Porto

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

What is the cheapest month to book a flight from Baltimore to Porto?

Currently, January is the cheapest month in which you can book a flight from Baltimore to Porto (average of $523). Flying from Baltimore to Porto in June is currently the most expensive (average of $1,047). 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.

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

Find hourly flight availability from Baltimore to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 45% on flights from Baltimore to Porto by exploring options for tickets at noon.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated June 12, 2025.
To help decide which airline to fly from Baltimore to Porto, see what other customers have to say about Delta, KLM and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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 Baltimore to Porto. 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 flying from Baltimore to Porto round-trip?

    According to our current data, United Airlines ($650), PLAY ($652), and Delta ($701) offers the cheapest pricing from Baltimore to Porto. United Airlines is 13% cheaper than the average price of flights available within the next 90 days to this destination.

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

    $327 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on United Airlines and WorldTicket, with prices starting from $494 and $518, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Baltimore to Porto (average of $523). Flying from Baltimore to Porto in June is currently the most expensive (average of $1,047). 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

Traveling to a place near Baltimore?

Book flights to Baltimore if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for Baltimore to Porto

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Top 2 airlines flying from Baltimore to Porto

Discover the top 2 airlines that operate flights from Baltimore to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$434Average$717FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$451Average$707FlexibilityNo cancel feeOn-time75%

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