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Cheap flights from Baltimore to Porto from $271

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 1/12. 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.
Delta Logo
12:16 pm - 10:30 amBWI-OPO
17h 14m2 stops
Delta Logo
11:15 am - 12:26 amOPO-BWI
18h 11m2 stops
$492Delta
Find Deal
Tue, Nov 18 - Thu, Nov 27
United Airlines Logo
6:15 am - 11:40 amBWI-OPO
24h 25m2 stops
United Airlines Logo
6:00 am - 9:59 amOPO-BWI
32h 59m2 stops
$503United Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 25
Multiple Airlines Logo
10:05 am - 12:05 pmBWI-OPO
21h 00m2 stops
Multiple Airlines Logo
1:45 pm - 9:41 pmOPO-BWI
36h 56m2 stops
$504Multiple Airlines
Find Deal
Sun, Jan 11 - Mon, Feb 2
United Airlines Logo
10:56 am - 11:40 amBWI-OPO
19h 44m2 stops
United Airlines Logo
6:00 am - 9:24 pmOPO-BWI
20h 24m3 stops
$507United Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 25
United Airlines Logo
10:56 am - 9:30 amBWI-OPO
17h 34m2 stops
United Airlines Logo
6:00 am - 9:24 pmOPO-BWI
20h 24m2 stops
$509United Airlines
Find Deal
Fri, Nov 14 - Thu, Nov 20
Multiple Airlines Logo
10:05 am - 11:40 amBWI-OPO
20h 35m2 stops
Multiple Airlines Logo
6:00 am - 9:41 pmOPO-BWI
20h 41m2 stops
$529Multiple Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
Scandinavian Airlines Logo
9:05 am - 4:45 pmBWI-OPO
26h 40m2 stops
Scandinavian Airlines Logo
5:35 pm - 12:26 amOPO-BWI
35h 51m2 stops
$530Scandinavian Airlines
Find Deal
Sun, Nov 16 - Fri, Nov 21
American Airlines Logo
5:04 am - 7:40 amBWI-OPO
21h 36m2 stops
American Airlines Logo
8:20 am - 11:52 pmOPO-BWI
20h 32m2 stops
$559American Airlines
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Sat, Nov 29 - Sat, Dec 6
KLM Logo
2:10 pm - 10:30 amBWI-OPO
15h 20m2 stops
KLM Logo
11:25 am - 10:59 pmOPO-BWI
16h 34m2 stops
$577KLM
Find Deal
Sun, Jan 11 - Sun, Feb 1
KLM Logo
2:10 pm - 10:30 amBWI-OPO
15h 20m2 stops
KLM Logo
11:25 am - 10:59 pmOPO-BWI
16h 34m2 stops
$678KLM
Find Deal
Sun, Jan 18 - Sun, Jan 25

KLM flights from Baltimore to Porto

Our best KLM deals on Baltimore to Porto flight tickets
KLM
Jan 11
BWI2:10 pmBaltimore/Washington
15h 20m
2 stops
OPO10:30 amPorto
Feb 1
OPO11:25 amPorto
16h 34m
2 stops
BWI10:59 pmBaltimore/Washington
$577
Find similar
KLM
Jan 18
BWI2:10 pmBaltimore/Washington
15h 20m
2 stops
OPO10:30 amPorto
Jan 25
OPO11:25 amPorto
16h 34m
2 stops
BWI10:59 pmBaltimore/Washington
$678
Find similar
KLM
Jan 17
BWI2:10 pmBaltimore/Washington
15h 20m
2 stops
OPO10:30 amPorto
Jan 26
OPO6:30 amPorto
17h 44m
2 stops
BWI7:14 pmBaltimore/Washington
$697
Find similar

Delta flights from Baltimore to Porto

Our best Delta deals on Baltimore to Porto flight tickets
Delta
Nov 18
BWI12:16 pmBaltimore/Washington
17h 14m
2 stops
OPO10:30 amPorto
Nov 27
OPO11:15 amPorto
18h 11m
2 stops
BWI12:26 amBaltimore/Washington
$492
Find similar
Delta
Dec 3
BWI2:41 pmBaltimore/Washington
14h 49m
2 stops
OPO10:30 amPorto
Dec 7
OPO5:00 amPorto
19h 02m
2 stops
BWI7:02 pmBaltimore/Washington
$516
Find similar
Delta
Nov 14
BWI2:35 pmBaltimore/Washington
14h 55m
2 stops
OPO10:30 amPorto
Nov 19
OPO11:15 amPorto
40h 45m
2 stops
BWI11:00 pmBaltimore/Washington
$517
Find similar

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 October 16, 2025.
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

Tue 11/18

12:16 pm-10:30 am

2 stops17h 14m

Porto

Thu 11/27

11:15 am-12:26 am

2 stops18h 11m

$492

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 11/9

6:15 am-11:40 am

2 stops24h 25m

Porto

Tue 11/25

6:00 am-9:59 am

2 stops32h 59m

$503

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 1/11

10:05 am-12:05 pm

2 stops21h 00m

Porto

Mon 2/2

1:45 pm-9:41 pm

2 stops36h 56m

$504

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 11/9

10:56 am-11:40 am

2 stops19h 44m

Porto

Tue 11/25

6:00 am-9:24 pm

3 stops20h 24m

$507

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 11/14

10:56 am-9:30 am

2 stops17h 34m

Porto

Thu 11/20

6:00 am-9:24 pm

2 stops20h 24m

$509

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Fri 1/16

10:05 am-11:40 am

2 stops20h 35m

Porto

Tue 1/20

6:00 am-9:41 pm

2 stops20h 41m

$529

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 11/16

9:05 am-4:45 pm

2 stops26h 40m

Porto

Fri 11/21

5:35 pm-12:26 am

2 stops35h 51m

$530

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 11/29

5:04 am-7:40 am

2 stops21h 36m

Porto

Sat 12/6

8:20 am-11:52 pm

2 stops20h 32m

$559

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 1/11

2:10 pm-10:30 am

2 stops15h 20m

Porto

Sun 2/1

11:25 am-10:59 pm

2 stops16h 34m

$577

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sun 1/18

2:10 pm-10:30 am

2 stops15h 20m

Porto

Sun 1/25

11:25 am-10:59 pm

2 stops16h 34m

$678

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Sunday when prices can be found for as low as $613. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $779. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the afternoon is the cheapest time of day to fly from Baltimore to Porto when you can find flight prices for as low as $698. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $836 on average. Flights to Porto from Baltimore at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Baltimore to Porto flights?

You could potentially save up to 2% 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

Direct flights

None
There are no direct flights from Baltimore to Porto. There are no popular flight routes from Baltimore to Porto.
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  • 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 25m, 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
7,984 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
Aveiro
Braga
Matosinhos
Caminha
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
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.

An easier way to manage your Porto trip

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