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Cheap flights from Maryland to Porto from $278

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maryland to Porto departing on 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Maryland to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 pm - 8:25 pm
BWI
-
OPO
18h 55m
2 stops
Multiple Airlines Logo
6:30 am - 10:15 pm
OPO
-
BWI
20h 45m
2 stops
$578Multiple Airlines
Sat, Sep 26 - Tue, Oct 6
Multiple Airlines Logo
8:30 pm - 8:00 am
BWI
-
OPO
30h 30m
3 stops
Multiple Airlines Logo
6:30 am - 10:15 pm
OPO
-
BWI
20h 45m
2 stops
$602Multiple Airlines
Sat, Sep 26 - Tue, Oct 6
Multiple Airlines Logo
8:30 pm - 1:30 pm
BWI
-
OPO
36h 00m
3 stops
Multiple Airlines Logo
10:00 pm - 7:25 pm
OPO
-
BWI
26h 25m
3 stops
$607Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Air Canada Logo
3:25 pm - 7:00 am
PHL
-
OPO
10h 35m
1 stop
Air Canada Logo
12:15 pm - 9:34 pm
OPO
-
PHL
14h 19m
1 stop
$725Air Canada
Mon, Aug 17 - Tue, Sep 1
Air Canada Logo
10:05 am - 11:25 am
PHL
-
OPO
20h 20m
2 stops
Air Canada Logo
6:00 am - 2:47 pm
OPO
-
PHL
37h 47m
2 stops
$738Air Canada
Wed, Oct 14 - Fri, Oct 23
United Airlines Logo
10:05 am - 7:00 am
PHL
-
OPO
15h 55m
1 stop
United Airlines Logo
11:20 am - 2:40 pm
OPO
-
PHL
32h 20m
2 stops
$753United Airlines
Wed, Aug 19 - Wed, Aug 26
United Airlines Logo
10:30 am - 7:00 am
PHL
-
OPO
15h 30m
2 stops
United Airlines Logo
11:20 am - 12:23 pm
OPO
-
PHL
30h 03m
2 stops
$758United Airlines
Wed, Aug 19 - Wed, Aug 26
Delta Logo
6:25 pm - 3:30 pm
IAD
-
OPO
16h 05m
2 stops
Delta Logo
5:00 am - 3:35 pm
OPO
-
IAD
15h 35m
1 stop
$797Delta
Sun, Oct 11 - Fri, Oct 23
Iberia Logo
2:56 pm - 7:40 am
DCA
-
OPO
35h 44m
2 stops
Iberia Logo
8:40 pm - 5:51 pm
OPO
-
DCA
25h 11m
2 stops
$798Iberia
Sat, Oct 17 - Sat, Oct 31
Delta Logo
5:05 pm - 10:30 am
DCA
-
OPO
12h 25m
1 stop
Delta Logo
11:25 am - 11:37 pm
OPO
-
DCA
17h 12m
2 stops
$803Delta
Wed, Oct 7 - Fri, Oct 23

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United Airlines flights from Maryland to Porto

Our best United Airlines deals on Maryland to Porto flight tickets
United Airlines
Aug 19
PHL10:05 amPhiladelphia
15h 55m
1 stop
OPO7:00 amPorto
Aug 26
OPO11:20 amPorto
32h 20m
2 stops
PHL2:40 pmPhiladelphia
$753
United Airlines
Aug 19
PHL10:30 amPhiladelphia
15h 30m
2 stops
OPO7:00 amPorto
Aug 26
OPO11:20 amPorto
30h 03m
2 stops
PHL12:23 pmPhiladelphia
$758
United Airlines
Aug 11
PHL3:25 pmPhiladelphia
10h 35m
1 stop
OPO7:00 amPorto
Aug 19
OPO6:00 amPorto
23h 59m
2 stops
PHL12:59 amPhiladelphia
$766

Lufthansa flights from Maryland to Porto

Our best Lufthansa deals on Maryland to Porto flight tickets
Lufthansa
Oct 15
PHL5:40 pmPhiladelphia
17h 05m
1 stop
OPO3:45 pmPorto
Oct 20
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$780
Lufthansa
Oct 14
PHL5:40 pmPhiladelphia
12h 40m
1 stop
OPO11:20 amPorto
Oct 23
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$791
Lufthansa
Oct 29
PHL6:40 pmPhiladelphia
13h 05m
1 stop
OPO11:45 amPorto
Nov 7
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$809

momondo Fare Finder

 
Customize your flight search to find flights from Maryland 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 July 9, 2026.
Use the filters below to find and compare flights from Maryland to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 9/26

8:30 pm-8:25 pm

2 stops18h 55m

Porto

Tue 10/6

6:30 am-10:15 pm

2 stops20h 45m

$578

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Sat 9/26

8:30 pm-8:00 am

3 stops30h 30m

Porto

Tue 10/6

6:30 am-10:15 pm

2 stops20h 45m

$602

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Mon 8/24

8:30 pm-1:30 pm

3 stops36h 00m

Porto

Mon 8/31

10:00 pm-7:25 pm

3 stops26h 25m

$607
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 8/17

3:25 pm-7:00 am

1 stop10h 35m

Porto

Tue 9/1

12:15 pm-9:34 pm

1 stop14h 19m

$725

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/14

10:05 am-11:25 am

2 stops20h 20m

Porto

Fri 10/23

6:00 am-2:47 pm

2 stops37h 47m

$738

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 8/19

10:05 am-7:00 am

1 stop15h 55m

Porto

Wed 8/26

11:20 am-2:40 pm

2 stops32h 20m

$753

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 8/19

10:30 am-7:00 am

2 stops15h 30m

Porto

Wed 8/26

11:20 am-12:23 pm

2 stops30h 03m

$758

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 10/11

6:25 pm-3:30 pm

2 stops16h 05m

Porto

Fri 10/23

5:00 am-3:35 pm

1 stop15h 35m

$797

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 10/17

2:56 pm-7:40 am

2 stops35h 44m

Porto

Sat 10/31

8:40 pm-5:51 pm

2 stops25h 11m

$798

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 10/7

5:05 pm-10:30 am

1 stop12h 25m

Porto

Fri 10/23

11:25 am-11:37 pm

2 stops17h 12m

$803

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 Maryland 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

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

You are more likely to see cheaper flights to Porto from Maryland when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $818 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Maryland for as low as $703 on momondo.

Can stopping save me money on Maryland to Porto flights?

You could potentially save up to 11% on your flight if you consider stops on a Maryland to Porto flight.

Cheap Maryland to Porto flight deals and tips

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

Fastest flight time

10h 20m

Direct flights

None
The fastest flight from Maryland to Porto takes 10h 20m
There are no direct flights from Maryland to Porto. There are no popular flight routes from Maryland to Porto.
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Frequently asked questions about flying from Maryland to Porto

  • When did momondo last update prices for flights from Maryland to Porto Airport?

    Prices for flights from Maryland to Porto Airport were last updated today.

  • How many operators does momondo search for flights from Maryland to Porto Airport?

  • How old do you have to be to fly from Maryland to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Maryland to Porto Airport.

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

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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
Aveiro
Matosinhos
Esposende
Lamego
Chaves
Pinhao
Arcos de Valdevez
Guimarães
Espinho
Ponte de Lima
Viseu
Curia
Mesao Frio
Penafiel
Baiao

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Maryland to Porto for you.

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

Flights from Maryland to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto from Maryland.

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

Price alerts on flights to Porto from Maryland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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