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Cheap flights from Baltimore to Porto from $221

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Baltimore to Porto departing on 3/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Baltimore to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
8:35 pm - 4:40 pm
BWI
-
OPO
15h 05m
1 stop
British Airways Logo
8:40 pm - 7:45 pm
OPO
-
BWI
27h 05m
2 stops
$510British Airways
Sun, Feb 22 - Tue, Mar 10
United Airlines Logo
8:09 am - 11:40 am
BWI
-
OPO
23h 31m
2 stops
United Airlines Logo
6:00 am - 2:06 pm
OPO
-
BWI
36h 06m
2 stops
$516United Airlines
Wed, Mar 11 - Tue, Mar 17
British Airways Logo
8:35 pm - 4:45 pm
BWI
-
OPO
15h 10m
1 stop
British Airways Logo
8:40 pm - 9:16 pm
OPO
-
BWI
29h 36m
2 stops
$530British Airways
Wed, Feb 18 - Mon, Feb 23
British Airways Logo
9:35 pm - 4:40 pm
BWI
-
OPO
15h 05m
1 stop
British Airways Logo
6:25 pm - 7:45 pm
OPO
-
BWI
29h 20m
1 stop
$537British Airways
Sun, Mar 8 - Tue, Mar 24
United Airlines Logo
8:09 am - 9:30 am
BWI
-
OPO
21h 21m
2 stops
United Airlines Logo
12:30 pm - 2:06 pm
OPO
-
BWI
29h 36m
2 stops
$547United Airlines
Tue, Mar 10 - Mon, Mar 23
Multiple Airlines Logo
11:13 am - 7:40 am
BWI
-
OPO
15h 27m
2 stops
Multiple Airlines Logo
9:55 am - 7:40 pm
OPO
-
BWI
14h 45m
1 stop
$550Multiple Airlines
Mon, Feb 9 - Thu, Apr 2
British Airways Logo
8:35 pm - 4:40 pm
BWI
-
OPO
15h 05m
1 stop
British Airways Logo
6:25 pm - 7:45 pm
OPO
-
BWI
29h 20m
1 stop
$552British Airways
Sun, Feb 22 - Tue, Mar 10
British Airways Logo
9:30 pm - 7:30 pm
BWI
-
OPO
17h 00m
1 stop
British Airways Logo
8:40 pm - 7:40 pm
OPO
-
BWI
28h 00m
1 stop
$553British Airways
Tue, Apr 14 - Tue, Apr 21
British Airways Logo
9:35 pm - 5:45 pm
BWI
-
OPO
16h 10m
1 stop
British Airways Logo
5:30 pm - 7:45 pm
OPO
-
BWI
30h 15m
1 stop
$554British Airways
Tue, Mar 10 - Mon, Mar 23
United Airlines Logo
6:30 am - 11:40 am
BWI
-
OPO
24h 10m
2 stops
United Airlines Logo
6:00 am - 9:17 pm
OPO
-
BWI
20h 17m
2 stops
$561United Airlines
Thu, Feb 19 - Thu, Feb 26

United Airlines flights from Baltimore to Porto

Our best United Airlines deals on Baltimore to Porto flight tickets
United Airlines
Mar 11
BWI8:09 amBaltimore/Washington
23h 31m
2 stops
OPO11:40 amPorto
Mar 17
OPO6:00 amPorto
36h 06m
2 stops
BWI2:06 pmBaltimore/Washington
$516
United Airlines
Mar 10
BWI8:09 amBaltimore/Washington
21h 21m
2 stops
OPO9:30 amPorto
Mar 23
OPO12:30 pmPorto
29h 36m
2 stops
BWI2:06 pmBaltimore/Washington
$547
United Airlines
Feb 19
BWI6:30 amBaltimore/Washington
24h 10m
2 stops
OPO11:40 amPorto
Feb 26
OPO6:00 amPorto
20h 17m
2 stops
BWI9:17 pmBaltimore/Washington
$561

KLM flights from Baltimore to Porto

Our best KLM deals on Baltimore to Porto flight tickets
KLM
Feb 18
BWI7:06 pmBaltimore/Washington
15h 19m
2 stops
OPO3:25 pmPorto
Feb 25
OPO11:25 amPorto
16h 28m
2 stops
BWI10:53 pmBaltimore/Washington
$600
KLM
Feb 17
BWI7:06 pmBaltimore/Washington
15h 19m
2 stops
OPO3:25 pmPorto
Feb 24
OPO5:00 amPorto
16h 38m
2 stops
BWI4:38 pmBaltimore/Washington
$632

momondo 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, momondo users made 832,500 searches. Data last updated January 21, 2026.
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

Sun 2/22

8:35 pm-4:40 pm

1 stop15h 05m

Porto

Tue 3/10

8:40 pm-7:45 pm

2 stops27h 05m

$510

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 3/11

8:09 am-11:40 am

2 stops23h 31m

Porto

Tue 3/17

6:00 am-2:06 pm

2 stops36h 06m

$516

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 2/18

8:35 pm-4:45 pm

1 stop15h 10m

Porto

Mon 2/23

8:40 pm-9:16 pm

2 stops29h 36m

$530

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 3/8

9:35 pm-4:40 pm

1 stop15h 05m

Porto

Tue 3/24

6:25 pm-7:45 pm

1 stop29h 20m

$537

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 3/10

8:09 am-9:30 am

2 stops21h 21m

Porto

Mon 3/23

12:30 pm-2:06 pm

2 stops29h 36m

$547

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 2/9

11:13 am-7:40 am

2 stops15h 27m

Porto

Thu 4/2

9:55 am-7:40 pm

1 stop14h 45m

$550

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 2/22

8:35 pm-4:40 pm

1 stop15h 05m

Porto

Tue 3/10

6:25 pm-7:45 pm

1 stop29h 20m

$552

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 4/14

9:30 pm-7:30 pm

1 stop17h 00m

Porto

Tue 4/21

8:40 pm-7:40 pm

1 stop28h 00m

$553

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 3/10

9:35 pm-5:45 pm

1 stop16h 10m

Porto

Mon 3/23

5:30 pm-7:45 pm

1 stop30h 15m

$554

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Thu 2/19

6:30 am-11:40 am

2 stops24h 10m

Porto

Thu 2/26

6:00 am-9:17 pm

2 stops20h 17m

$561

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Baltimore to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Baltimore to Porto flights?

You could potentially save up to 15% on your flight if you consider stops on a Baltimore to Porto flight.

When to book flights from Baltimore to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Baltimore to Porto (BWI to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Porto

Fastest flight time

14h 24m

Direct flights

None
The fastest flight from Baltimore to Porto takes 14h 24m
There are no direct flights from Baltimore to Porto. There are no popular flight routes from Baltimore to Porto.
Search flight deals

  • How far is Baltimore/Washington to Porto by plane?

    The distance between Baltimore/Washington and Porto is about 3491.2 mi. Flights usually cover this in 14h 24m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Baltimore/Washington Airport to Porto Airport?

    Prices for flights from Baltimore/Washington Airport to Porto Airport refresh daily.

  • How many operators does momondo search for flights from Baltimore/Washington Airport to Porto Airport?

  • How old do you have to be to fly from Baltimore/Washington Airport to Porto Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Baltimore to Porto?

Best airlines flying from Baltimore to Porto

Compare and see reviews for airlines that fly from Baltimore to Porto with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $529Free CancellationRating
7.9
8,089 reviews
Search Delta flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Matosinhos
Aveiro
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to Porto?

It is quick and easy to find Baltimore to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

Can I find flights from Baltimore to Porto with flexible booking policies on momondo?

All flight searches from Baltimore to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Baltimore to Porto?

Once you have performed a search for Baltimore to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Baltimore to Porto right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Baltimore and alert you when they change.

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