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Cheap flights from Maryland to Porto from $267

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 5/13. 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
0 bags

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Find the cheapest flights from Maryland to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
8:15 pm - 8:00 pm
PHL
-
OPO
18h 45m
1 stop
Iberia Logo
8:20 am - 5:35 pm
OPO
-
PHL
14h 15m
1 stop
$486Iberia
Tue, Apr 7 - Wed, Apr 15
Delta Logo
11:08 am - 3:25 pm
PHL
-
OPO
23h 17m
2 stops
Delta Logo
5:00 am - 4:37 pm
OPO
-
PHL
16h 37m
2 stops
$493Delta
Tue, Apr 7 - Wed, Apr 15
Scandinavian Airlines Logo
8:20 pm - 8:40 am
IAD
-
OPO
31h 20m
1 stop
Scandinavian Airlines Logo
11:50 am - 4:50 pm
OPO
-
IAD
34h 00m
1 stop
$503Scandinavian Airlines
Thu, Apr 16 - Wed, Apr 22
Scandinavian Airlines Logo
8:20 pm - 8:40 am
IAD
-
OPO
31h 20m
1 stop
Scandinavian Airlines Logo
11:50 am - 4:50 pm
OPO
-
IAD
34h 00m
1 stop
$508Scandinavian Airlines
Thu, Apr 9 - Wed, Apr 22
TAP AIR PORTUGAL Logo
5:40 pm - 9:00 am
IAD
-
OPO
10h 20m
1 stop
TAP AIR PORTUGAL Logo
10:25 pm - 3:10 pm
OPO
-
IAD
21h 45m
1 stop
$509TAP AIR PORTUGAL
Sun, Apr 12 - Wed, Apr 29
TAP AIR PORTUGAL Logo
6:30 pm - 11:05 am
IAD
-
OPO
12h 35m
1 stop
TAP AIR PORTUGAL Logo
10:00 am - 8:35 pm
OPO
-
IAD
15h 35m
1 stop
$514TAP AIR PORTUGAL
Mon, Mar 16 - Fri, Apr 10
Multiple Airlines Logo
10:30 am - 7:40 am
PHL
-
OPO
16h 10m
2 stops
Multiple Airlines Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$515Multiple Airlines
Tue, Apr 7 - Wed, Apr 15
Multiple Airlines Logo
3:36 pm - 10:30 am
PHL
-
OPO
14h 54m
2 stops
Multiple Airlines Logo
5:00 am - 4:53 pm
OPO
-
PHL
16h 53m
2 stops
$545Multiple Airlines
Mon, Mar 9 - Mon, Mar 30
United Airlines Logo
8:10 pm - 9:30 am
DCA
-
OPO
9h 20m
1 stop
United Airlines Logo
6:00 am - 8:15 pm
OPO
-
DCA
19h 15m
2 stops
$583United Airlines
Tue, Mar 24 - Wed, Apr 1
United Airlines Logo
6:00 am - 7:00 am
DCA
-
OPO
20h 00m
1 stop
United Airlines Logo
2:25 pm - 10:44 am
OPO
-
DCA
25h 19m
2 stops
$594United Airlines
Tue, Jul 28 - Wed, Aug 19

Iberia flights from Maryland to Porto

Our best Iberia deals on Maryland to Porto flight tickets
Iberia
Apr 7
PHL8:15 pmPhiladelphia
18h 45m
1 stop
OPO8:00 pmPorto
Apr 15
OPO8:20 amPorto
14h 15m
1 stop
PHL5:35 pmPhiladelphia
$486
Iberia
Apr 7
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
Apr 15
OPO8:40 pmPorto
25h 55m
1 stop
PHL5:35 pmPhiladelphia
$506
Iberia
Apr 7
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
Apr 15
OPO12:25 pmPorto
35h 30m
2 stops
PHL6:55 pmPhiladelphia
$510

Delta flights from Maryland to Porto

Our best Delta deals on Maryland to Porto flight tickets
Delta
Apr 7
PHL11:08 amPhiladelphia
23h 17m
2 stops
OPO3:25 pmPorto
Apr 15
OPO5:00 amPorto
16h 37m
2 stops
PHL4:37 pmPhiladelphia
$493
Delta
Mar 24
PHL11:16 amPhiladelphia
19h 14m
2 stops
OPO10:30 amPorto
Mar 31
OPO5:00 amPorto
21h 23m
2 stops
PHL9:23 pmPhiladelphia
$495
Delta
Aug 4
PHL9:42 amPhiladelphia
19h 48m
2 stops
OPO10:30 amPorto
Aug 27
OPO5:00 amPorto
19h 22m
2 stops
PHL7:22 pmPhiladelphia
$554

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 February 16, 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

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-8:00 pm

1 stop18h 45m

Porto

Wed 4/15

8:20 am-5:35 pm

1 stop14h 15m

$486

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

11:08 am-3:25 pm

2 stops23h 17m

Porto

Wed 4/15

5:00 am-4:37 pm

2 stops16h 37m

$493

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 4/16

8:20 pm-8:40 am

1 stop31h 20m

Porto

Wed 4/22

11:50 am-4:50 pm

1 stop34h 00m

$503

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 4/9

8:20 pm-8:40 am

1 stop31h 20m

Porto

Wed 4/22

11:50 am-4:50 pm

1 stop34h 00m

$508

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 4/12

5:40 pm-9:00 am

1 stop10h 20m

Porto

Wed 4/29

10:25 pm-3:10 pm

1 stop21h 45m

$509

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 3/16

6:30 pm-11:05 am

1 stop12h 35m

Porto

Fri 4/10

10:00 am-8:35 pm

1 stop15h 35m

$514

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

10:30 am-7:40 am

2 stops16h 10m

Porto

Wed 4/15

8:40 pm-5:35 pm

1 stop25h 55m

$515

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

3:36 pm-10:30 am

2 stops14h 54m

Porto

Mon 3/30

5:00 am-4:53 pm

2 stops16h 53m

$545

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 3/24

8:10 pm-9:30 am

1 stop9h 20m

Porto

Wed 4/1

6:00 am-8:15 pm

2 stops19h 15m

$583

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/28

6:00 am-7:00 am

1 stop20h 00m

Porto

Wed 8/19

2:25 pm-10:44 am

2 stops25h 19m

$594

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

What is the cheapest month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from Maryland, with most prices found around $539. If you aren’t able to travel during the month of January, then book flights to Porto from Maryland during October instead. Flights to Porto in October, while not as cheap as those in January, still average around $594.

How far in advance should I book a flight 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 $721 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 $618 on momondo.

Can stopping save me money on Maryland to Porto flights?

You could potentially save up to 15% 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 40m

Direct flights

None
The fastest flight from Maryland to Porto takes 10h 40m
There are no direct flights from Maryland to Porto. There are no popular flight routes from Maryland to Porto.
Search flight deals

  • 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.

Best airlines flying from Maryland to Porto

Compare and see reviews for airlines that fly from Maryland to Porto with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $529Free CancellationRating
7.9
8,204 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
Matosinhos
Braga
Aveiro
Esposende
Lamego
Guimarães
Pinhao
Chaves
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
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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