Porto

$276+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Aug 24 — Aug 311
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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 August 19, 2025.

Round-trip from

$518
(United Airlines)

One-way from

$276
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,172
From Baltimore/Washington to Porto
One-way flight from Baltimore/Washington to Porto
Highest demand for flights based on searches. 21% potential increase in price ($221 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
Average for round-trip flights in August 2025

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 August 19, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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 11/56:15 amBWI - OPO
2 stops24h 25mUnited Airlines
Fri 11/1412:35 pmOPO - BWI
2 stops26h 24mUnited Airlines
Deal found 8/18$525
This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:46 pmBWI - OPO
2 stops20h 19mBritish Airways
Fri 11/146:05 pmOPO - BWI
1 stop29h 40mBritish Airways
Deal found 8/18$608
This Iberia deal was found by Cheapflights users on 8/18. 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 11/58:35 pmBWI - OPO
1 stop14h 30mMultiple Airlines
Fri 11/148:40 pmOPO - BWI
2 stops27h 05mMultiple Airlines
Deal found 8/18$622
This Mytrip deal was found by Cheapflights users on 8/18. 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.
Tue 9/166:50 pmBWI - OPO
2 stops17h 25mMultiple Airlines
Tue 9/2310:20 pmOPO - BWI
2 stops24h 20mMultiple Airlines
Deal found 8/18$636
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:35 pmBWI - OPO
1 stop17h 45mBritish Airways
Fri 10/311:15 amOPO - BWI
1 stop13h 30mBritish Airways
Deal found 8/18$641
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:35 pmBWI - OPO
1 stop17h 40mBritish Airways
Sat 11/158:05 pmOPO - BWI
1 stop27h 40mBritish Airways
Deal found 8/18$642
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 9/26:15 amBWI - OPO
2 stops20h 30mUnited Airlines
Fri 9/199:00 amOPO - BWI
2 stops17h 42mUnited Airlines
Deal found 8/19$643
This British Airways deal was found by Cheapflights users on 8/17. 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 11/19:35 pmBWI - OPO
1 stop17h 40mBritish Airways
Sat 11/88:05 pmOPO - BWI
1 stop27h 40mBritish Airways
Deal found 8/17$647
This Delta deal was found by Cheapflights users on 8/18. 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 12/1712:15 pmBWI - OPO
2 stops17h 15mDelta
Wed 12/2411:25 amOPO - BWI
2 stops16h 22mDelta
Deal found 8/18$653
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 10/188:05 amBWI - OPO
2 stops18h 30mAmerican Airlines
Sat 10/258:15 amOPO - BWI
2 stops20h 33mAmerican Airlines
Deal found 8/17$673
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 8/235:30 pmBWI - OPO
2 stops36h 45mUnited Airlines
Tue 9/212:50 pmOPO - BWI
2 stops50h 05mUnited Airlines
Deal found 8/17$677

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 August 19, 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

Tue 1/6

10:45 am-12:05 pm

2 stops20h 20m

Porto

Fri 1/16

6:00 am-8:57 pm

2 stops19h 57m

$518

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/5

10:56 am-3:25 pm

2 stops23h 29m

Porto

Fri 11/14

12:35 pm-9:59 am

2 stops26h 24m

$525

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 1/6

8:35 pm-5:35 pm

1 stop16h 00m

Porto

Fri 1/16

8:40 pm-6:45 pm

2 stops27h 05m

$562

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 2/13

10:45 am-11:40 am

2 stops19h 55m

Porto

Mon 2/16

12:30 pm-8:57 pm

2 stops37h 27m

$587

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 2/12

5:11 pm-11:40 am

2 stops37h 29m

Porto

Mon 2/16

12:30 pm-8:57 pm

2 stops37h 27m

$593

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/5

2:46 pm-4:05 pm

2 stops20h 19m

Porto

Fri 11/14

6:05 pm-6:45 pm

1 stop29h 40m

$608

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 2/8

10:45 am-12:50 pm

2 stops21h 05m

Porto

Sun 2/15

6:00 am-8:57 pm

3 stops19h 57m

$619

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 2/12

8:35 pm-8:00 pm

2 stops18h 25m

Porto

Wed 2/18

8:20 am-6:45 pm

2 stops15h 25m

$621

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 11/5

8:35 pm-4:05 pm

1 stop14h 30m

Porto

Fri 11/14

8:40 pm-6:45 pm

2 stops27h 05m

$622

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 10/26

6:05 am-2:10 pm

3 stops52h 05m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 18 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 $1,030). 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 August 19, 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.

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 August 19, 2025.
Peruse reviews from past customers who have flown with Delta from Baltimore to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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!
8.0
Very good
8.0
Very good

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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.
  • How long is the flight from Baltimore to Porto?

    Departing from Baltimore to Porto will take you 16h. There are 3493 mi between Baltimore and Porto. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Baltimore to Porto round-trip?

    According to our current data, Delta ($434), offers the cheapest pricing from Baltimore to Porto. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 $1,030). 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 Porto?

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

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Top airline flying from Baltimore to Porto

Discover the top airline 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 August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$434Average$701FlexibilityNo cancel feeOn-timeN/A

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