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$293+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 30, 2025.

Round-trip from

$556
(Mytrip)

One-way from

$293
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$763
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. 21% potential increase in price ($205 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($40 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 30, 2025.

This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 7/167:10 amBWI - OPO
2 stops21h 10mMultiple Airlines
Wed 7/238:40 amOPO - BWI
2 stops27h 50mMultiple Airlines
Deal found 6/28$556
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Sat 11/85:12 pmBWI - OPO
2 stops37h 28mUnited Airlines
Sat 11/1512:40 pmOPO - BWI
2 stops37h 44mUnited Airlines
Deal found 6/29$587
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:25 pmBWI - OPO
2 stops16h 05mDelta
Tue 9/26:15 amOPO - BWI
2 stops22h 02mDelta
Deal found 6/28$646
This KLM deal was found by Cheapflights users on 6/29. 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.
Wed 10/81:00 pmBWI - OPO
2 stops16h 40mKLM
Tue 10/216:15 amOPO - BWI
2 stops20h 28mKLM
Deal found 6/29$677
This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:20 pmBWI - OPO
1 stop17h 10mBritish Airways
Wed 10/228:20 pmOPO - BWI
1 stop28h 15mBritish Airways
Deal found 6/28$685
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/1412:22 pmBWI - OPO
2 stops18h 18mAmerican Airlines
Sat 8/238:15 amOPO - BWI
2 stops21h 02mAmerican Airlines
Deal found 6/30$748
This Iberia deal was found by Cheapflights users on 6/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/109:20 pmBWI - OPO
2 stops29h 15mIberia
Sat 10/258:35 pmOPO - BWI
2 stops28h 10mIberia
Deal found 6/28$806

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 30, 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 7/16

7:10 am-9:20 am

2 stops21h 10m

Porto

Wed 7/23

8:40 am-7:30 am

2 stops27h 50m

$556

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 9/23

10:51 am-9:45 am

2 stops17h 54m

Porto

Thu 10/23

6:00 am-5:26 pm

2 stops16h 26m

$590

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 8/17

6:25 pm-3:30 pm

2 stops16h 05m

Porto

Tue 9/2

6:15 am-11:17 pm

2 stops22h 02m

$646

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 9/9

9:20 pm-7:30 pm

1 stop17h 10m

Porto

Wed 10/22

8:20 pm-7:35 pm

1 stop28h 15m

$685

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 8/13

6:25 pm-3:30 pm

2 stops16h 05m

Porto

Wed 8/20

9:20 am-8:51 pm

2 stops16h 31m

$697

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 8/14

12:22 pm-11:40 am

2 stops18h 18m

Porto

Sat 8/23

8:15 am-12:17 am

2 stops21h 02m

$748

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 7/28

6:20 pm-8:25 pm

2 stops21h 05m

$293

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 8/18

6:50 pm-8:05 pm

1 stop20h 15m

$339

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 7/21

6:15 am-9:35 am

2 stops22h 20m

$370

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 9/9

6:25 pm-3:30 pm

2 stops16h 05m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 14 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 $1,038). 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 30, 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 June 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines 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.
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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 ($590), Delta ($646), and British Airways ($685) offers the cheapest pricing from Baltimore to Porto. United Airlines is 20% 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?

    $339 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 Delta, with prices starting from $370 and $378, 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 $1,038). 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

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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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$434Average$701FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$451Average$716FlexibilityNo cancel feeOn-time75%

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