What are the cheapest airlines flying from Baltimore to Porto round-trip?

According to our current data, PLAY ($607), United Airlines ($670), and Delta ($679) offers the cheapest pricing from Baltimore to Porto. PLAY is 16% 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?

$301 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on WorldTicket and United Airlines, with prices starting from $501 and $533, respectively.

What is the cheapest day to fly from Baltimore to Porto?

Travelers seeking maximum savings on their Baltimore to Porto flight should consider departing on Sunday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Departing on a Friday is a good option for securing a great price. You can expect to save up to 70% when planning your travel around this day of the week.

How far in advance should I book a flight from Baltimore to Porto?

Travelers have found it’s best to book a flight 28 days in advance to save up to 62% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 28 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Baltimore to Porto 1-2 weeks in advance for as low as $625, or $777 for flights within the next 24 hours.

What is the cheapest month to fly from Baltimore to Porto?

Our data shows that November tends to be the cheapest month to fly to Porto from Baltimore. Users have commonly found prices around $671 for the month, but tickets can be as low as $418. Due to multiple factors, prepare for potentially higher prices in June.

Most accurate provider : When it comes to deals on Baltimore-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Baltimore-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Baltimore-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Baltimore-Porto flights, Cheapflights users trust AranGrant the most. AranGrant 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 Baltimore-Porto 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 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.

$275+ Flights from Baltimore to Porto

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Cheap flight deals from Baltimore to Porto

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$607 (Kiwi.com)
One-way from	$275 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$773

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

Search Deals

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

Search Deals

From Baltimore/Washington to Porto

Search Deals

One-way flight from Baltimore/Washington to Porto

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($202 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 15, 2025.

Tue 11/116:17 amBWI - OPO

2 stops22h 13mUnited Airlines

Tue 11/1812:35 pmOPO - BWI

2 stops26h 44mUnited Airlines

Deal found 4/14

$538

Wed 5/216:50 pmBWI - OPO

1 stop20h 20mPLAY

Thu 5/299:10 pmOPO - BWI

1 stop25h 30mPLAY

Deal found 4/13

$607

Tue 5/136:50 pmBWI - OPO

2 stops17h 25mMultiple Airlines

Tue 5/206:05 amOPO - BWI

2 stops16h 35mMultiple Airlines

Deal found 4/13

$617

Mon 9/155:25 pmBWI - OPO

2 stops17h 05mDelta

Wed 12/175:00 amOPO - BWI

2 stops22h 56mDelta

Deal found 4/14

$680

Mon 6/309:20 pmBWI - OPO

1 stop17h 30mBritish Airways

Fri 8/111:15 amOPO - BWI

1 stop13h 20mBritish Airways

Deal found 4/13

$693

Fri 5/94:47 pmBWI - OPO

2 stops34h 38mAir France

Tue 5/204:20 pmOPO - BWI

2 stops36h 00mAir France

Deal found 4/13

$986

Wed 9/179:20 pmBWI - OPO

2 stops33h 20mIberia

Sat 9/278:15 amOPO - BWI

2 stops16h 20mIberia

Deal found 4/13

$1,064

Sat 4/2610:45 amBWI - OPO

2 stops15h 50mAmerican Airlines

Wed 5/78:15 amOPO - BWI

2 stops16h 12mAmerican Airlines

Deal found 4/14

$1,161

Best flights from Baltimore to Porto
Discover carefully curated flight deals from Baltimore to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2025.

Wed 5/216:50 pmBWI - OPO

1 stop20h 20mPLAY

Thu 5/299:10 pmOPO - BWI

1 stop25h 30mPLAY

Deal found 4/13

$607

Tue 5/136:50 pmBWI - OPO

2 stops17h 25mMultiple Airlines

Tue 5/206:05 amOPO - BWI

2 stops16h 35mMultiple Airlines

Deal found 4/13

$617

Mon 6/306:15 amBWI - OPO

2 stops19h 40mUnited Airlines

Tue 7/812:50 pmOPO - BWI

2 stops29h 58mUnited Airlines

Deal found 4/12

$670

Tue 5/65:40 pmBWI - OPO

2 stops16h 50mDelta

Wed 5/146:20 amOPO - BWI

2 stops15h 03mDelta

Deal found 4/14

$679

Mon 6/309:20 pmBWI - OPO

1 stop17h 30mBritish Airways

Fri 8/111:15 amOPO - BWI

1 stop13h 20mBritish Airways

Deal found 4/13

$693

Fri 5/94:47 pmBWI - OPO

2 stops34h 38mAir France

Tue 5/204:20 pmOPO - BWI

2 stops36h 00mAir France

Deal found 4/13

$986

Mon 6/239:20 pmBWI - OPO

2 stops29h 15mIberia

Thu 7/34:55 pmOPO - BWI

2 stops31h 40mIberia

Deal found 4/13

$1,100

Sat 4/2610:45 amBWI - OPO

2 stops15h 50mAmerican Airlines

Wed 5/78:15 amOPO - BWI

2 stops16h 12mAmerican Airlines

Deal found 4/14

$1,161

Fri 6/136:50 pmBWI - OPO

1 stop20h 15mWorldTicket

Tue 6/249:05 pmOPO - BWI

1 stop25h 35mWorldTicket

Deal found 4/13

$1,392

Last-minute flights from Baltimore to Porto
Discover last-minute flight deals from Baltimore to Porto. Data last updated April 15, 2025 and is based on user searches.

Wed 4/166:15 amBWI - OPO

2 stops22h 30mUnited Airlines

Mon 4/216:00 amOPO - BWI

2 stops44h 42mUnited Airlines

Deal found 4/14

$2,046

Fri 4/185:40 pmBWI - OPO

2 stops21h 55mAir France

Wed 4/234:20 pmOPO - BWI

2 stops29h 30mAir France

Deal found 4/13

$2,169

Sat 4/2610:45 amBWI - OPO

2 stops15h 50mAmerican Airlines

Wed 5/78:15 amOPO - BWI

2 stops16h 12mAmerican Airlines

Deal found 4/14

$1,161

Mon 4/285:40 pmBWI - OPO

2 stops16h 50mDelta

Thu 5/86:30 amOPO - BWI

2 stops17h 37mDelta

Deal found 4/13

$679

Mon 4/289:20 pmBWI - OPO

1 stop17h 30mBritish Airways

Mon 5/59:10 pmOPO - BWI

1 stop27h 25mBritish Airways

Deal found 4/13

$729

Mon 4/288:30 pmBWI - OPO

2 stops18h 45mMultiple Airlines

Thu 5/89:10 pmOPO - BWI

1 stop25h 30mMultiple Airlines

Deal found 4/13

$812

Wed 4/309:20 pmBWI - OPO

1 stop16h 20mBritish Airways

Tue 5/68:40 pmOPO - BWI

1 stop27h 55mBritish Airways

Deal found 4/13

$724

Tue 5/65:40 pmBWI - OPO

2 stops16h 50mDelta

Wed 5/146:20 amOPO - BWI

2 stops15h 03mDelta

Deal found 4/14

$679

Tue 5/66:45 amBWI - OPO

2 stops23h 30mUnited Airlines

Wed 5/1412:35 pmOPO - BWI

2 stops26h 19mUnited Airlines

Deal found 4/13

$682

Fri 5/94:47 pmBWI - OPO

2 stops34h 38mAir France

Tue 5/204:20 pmOPO - BWI

2 stops36h 00mAir France

Deal found 4/13

$986

Sun 5/119:20 pmBWI - OPO

2 stops13h 35mIberia

Sat 5/178:15 amOPO - BWI

2 stops16h 20mIberia

Deal found 4/13

$9,088

Tue 5/136:50 pmBWI - OPO

2 stops17h 25mMultiple Airlines

Tue 5/206:05 amOPO - BWI

2 stops16h 35mMultiple Airlines

Deal found 4/13

$617

One-way flights from Baltimore to Porto
Search for one-way flight options from Baltimore to Porto. Find affordable one-way fares based on user searches. Data last updated April 15, 2025.

Mon 8/181:51 pmBWI - OPO

1 stop16h 04mMultiple Airlines

Deal found 4/14

$275

Mon 7/216:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 4/14

$301

Mon 6/306:50 pmBWI - OPO

1 stop20h 15mWorldTicket

Deal found 4/13

$501

Mon 6/3010:59 amBWI - OPO

2 stops14h 56mUnited Airlines

Deal found 4/14

$533

Tue 8/199:20 pmBWI - OPO

1 stop17h 10mBritish Airways

Deal found 4/14

$549

Thu 5/85:28 pmBWI - OPO

2 stops17h 07mDelta

Deal found 4/14

$617

Mon 7/219:20 pmBWI - OPO

2 stops13h 35mIberia

Deal found 4/14

$2,172

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 5/21

6:50 pm-8:10 pm

1 stop20h 20m

Porto

Thu 5/29

9:10 pm-5:40 pm

1 stop25h 30m

$607

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 5/13

6:50 pm-5:15 pm

2 stops17h 25m

Porto

Tue 5/20

6:05 am-5:40 pm

2 stops16h 35m

$617

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 9/24

10:45 am-9:25 am

2 stops17h 40m

Porto

Tue 9/30

12:50 pm-2:03 pm

2 stops30h 13m

$629

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 9/15

5:25 pm-3:30 pm

2 stops17h 05m

Porto

Wed 12/17

5:00 am-10:56 pm

2 stops22h 56m

$680

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 6/30

9:20 pm-7:50 pm

1 stop17h 30m

Porto

Fri 8/1

11:15 am-7:35 pm

1 stop13h 20m

$693

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 5/9

4:47 pm-8:25 am

2 stops34h 38m

Porto

Tue 5/20

4:20 pm-11:20 pm

2 stops36h 00m

$986

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 9/17

9:20 pm-11:40 am

2 stops33h 20m

Porto

Sat 9/27

8:15 am-7:35 pm

2 stops16h 20m

$1,064

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 4/26

10:45 am-7:35 am

2 stops15h 50m

Porto

Wed 5/7

8:15 am-7:27 pm

2 stops16h 12m

$1,161

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 6/13

6:50 pm-8:05 pm

1 stop20h 15m

Porto

Tue 6/24

9:05 pm-5:40 pm

1 stop25h 35m

$1,392

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 8/18

1:51 pm-10:55 am

1 stop16h 04m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 16 results

Compare providers for flights from Baltimore to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Porto in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Justfly.com	Price Accuracy3 stars	Trust Score*2 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Baltimore-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Baltimore-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Baltimore-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Baltimore-Porto flights, Cheapflights users trust AranGrant the most. AranGrant 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 Baltimore-Porto 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 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 $1,081). 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?

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

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

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

To help decide which airline to fly from Baltimore to Porto, see what other customers have to say about Delta, Air France and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,917 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.5

Good

1,433 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,656 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

PLAY

7.0

Good

99 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Baltimore to Porto round-trip?
According to our current data, PLAY ($607), United Airlines ($670), and Delta ($679) offers the cheapest pricing from Baltimore to Porto. PLAY is 16% 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?
$301 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on WorldTicket and United Airlines, with prices starting from $501 and $533, 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 $1,081). 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

Aveiro

Coimbra

Matosinhos

Arcos de Valdevez

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Alternative routes for Baltimore to Porto

Other flights to Porto

Top 2 airlines flying from Baltimore to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$434	Average$702	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$451	Average$707	FlexibilityNo cancel fee	On-time75%

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$275+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Baltimore to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Baltimore to Porto

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Baltimore to Porto

Cheapest flights from Baltimore to PortoExplore 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 April 15, 2025.

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 April 15, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Baltimore to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Porto in April.

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.

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?

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 April 15, 2025.

Rainfall in Porto by month

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

Temperature in Porto by month

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

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 April 15, 2025.

To help decide which airline to fly from Baltimore to Porto, see what other customers have to say about Delta, Air France and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

How can I find direct flights from Baltimore to Porto?

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

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

Traveling to a place near Baltimore?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Baltimore to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Baltimore to Porto

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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 April 15, 2025.