Cheap flights from Maryland to Porto from $241

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 9/15. 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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Cheap round-trip flights

United Airlines Logo
5:33 pm - 9:30 amIAD-OPO
10h 57m1 stop
United Airlines Logo
6:00 am - 11:59 pmOPO-IAD
22h 59m2 stops
$490United Airlines
Find Deal
Sun, Nov 2 - Tue, Nov 11
United Airlines Logo
7:00 pm - 9:30 amDCA-OPO
9h 30m1 stop
United Airlines Logo
6:00 am - 7:35 pmOPO-DCA
18h 35m2 stops
$490United Airlines
Find Deal
Mon, Nov 3 - Tue, Nov 11
TAP AIR PORTUGAL Logo
10:20 pm - 3:00 pmIAD-OPO
11h 40m1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 4:15 pmOPO-IAD
26h 15m1 stop
$504TAP AIR PORTUGAL
Find Deal
Wed, Oct 22 - Wed, Oct 29
TAP AIR PORTUGAL Logo
10:20 pm - 10:55 pmIAD-OPO
19h 35m1 stop
TAP AIR PORTUGAL Logo
9:15 pm - 3:20 pmOPO-IAD
23h 05m1 stop
$505TAP AIR PORTUGAL
Find Deal
Mon, Sep 22 - Wed, Oct 8
Iberia Logo
2:00 pm - 4:00 pmDCA-OPO
21h 00m2 stops
Iberia Logo
8:40 pm - 4:51 pmOPO-DCA
25h 11m2 stops
$508Iberia
Find Deal
Tue, Nov 4 - Tue, Nov 11
 Logo
9:35 am - 3:00 pmIAD-OPO
24h 25m2 stops
 Logo
8:10 pm - 7:25 pmOPO-IAD
28h 15m2 stops
Tue, Oct 7 - Thu, Oct 16
 Logo
9:35 am - 3:00 pmIAD-OPO
24h 25m2 stops
 Logo
4:00 pm - 7:25 pmOPO-IAD
32h 25m3 stops
Tue, Oct 7 - Thu, Oct 16
Iberia Logo
8:35 pm - 7:40 amBWI-OPO
30h 05m2 stops
Iberia Logo
8:40 pm - 6:45 pmOPO-BWI
27h 05m2 stops
$519Iberia
Find Deal
Tue, Nov 4 - Mon, Nov 10
Lufthansa Logo
6:00 pm - 11:40 amIAD-OPO
12h 40m1 stop
Lufthansa Logo
12:30 pm - 3:50 pmOPO-IAD
32h 20m1 stop
$520Lufthansa
Find Deal
Sun, Nov 2 - Mon, Nov 10
Lufthansa Logo
11:10 pm - 11:45 pmIAD-OPO
19h 35m1 stop
Lufthansa Logo
1:45 pm - 3:50 pmOPO-IAD
31h 05m2 stops
$538Lufthansa
Find Deal
Wed, Nov 5 - Tue, Nov 11

United Airlines flights from Maryland to Porto

Our best United Airlines deals on Maryland to Porto flight tickets
United Airlines
Nov 2
IAD5:33 pmWashington, D.C. Dulles Intl
10h 57m
1 stop
OPO9:30 amPorto
Nov 11
OPO6:00 amPorto
22h 59m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
United Airlines
Nov 2
IAD5:33 pmWashington, D.C. Dulles Intl
10h 57m
1 stop
OPO9:30 amPorto
Nov 11
OPO12:35 pmPorto
13h 22m
1 stop
IAD8:57 pmWashington, D.C. Dulles Intl
United Airlines
Nov 5
IAD5:33 pmWashington, D.C. Dulles Intl
10h 57m
1 stop
OPO9:30 amPorto
Nov 10
OPO12:30 pmPorto
32h 20m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl

TAP AIR PORTUGAL flights from Maryland to Porto

Our best TAP AIR PORTUGAL deals on Maryland to Porto flight tickets
TAP AIR PORTUGAL
Oct 22
IAD10:20 pmWashington, D.C. Dulles Intl
11h 40m
1 stop
OPO3:00 pmPorto
Oct 29
OPO6:00 pmPorto
26h 15m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Sep 22
IAD10:20 pmWashington, D.C. Dulles Intl
19h 35m
1 stop
OPO10:55 pmPorto
Oct 8
OPO9:15 pmPorto
23h 05m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Sep 15
IAD5:45 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
OPO10:00 amPorto
Sep 25
OPO9:00 amPorto
11h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl

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 August 6, 2025.
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

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 11/2

5:33 pm-9:30 am

1 stop10h 57m

Porto

Tue 11/11

6:00 am-11:59 pm

2 stops22h 59m

$490

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 11/3

7:00 pm-9:30 am

1 stop9h 30m

Porto

Tue 11/11

6:00 am-7:35 pm

2 stops18h 35m

$490

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 10/22

10:20 pm-3:00 pm

1 stop11h 40m

Porto

Wed 10/29

6:00 pm-4:15 pm

1 stop26h 15m

$504

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 9/22

10:20 pm-10:55 pm

1 stop19h 35m

Porto

Wed 10/8

9:15 pm-3:20 pm

1 stop23h 05m

$505

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 11/4

2:00 pm-4:00 pm

2 stops21h 00m

Porto

Tue 11/11

8:40 pm-4:51 pm

2 stops25h 11m

$508

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/7

9:35 am-3:00 pm

2 stops24h 25m

Porto

Thu 10/16

8:10 pm-7:25 pm

2 stops28h 15m

$514

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/7

9:35 am-3:00 pm

2 stops24h 25m

Porto

Thu 10/16

4:00 pm-7:25 pm

3 stops32h 25m

$516

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 11/4

8:35 pm-7:40 am

2 stops30h 05m

Porto

Mon 11/10

8:40 pm-6:45 pm

2 stops27h 05m

$519

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 11/2

6:00 pm-11:40 am

1 stop12h 40m

Porto

Mon 11/10

12:30 pm-3:50 pm

1 stop32h 20m

$520

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 11/5

11:10 pm-11:45 pm

1 stop19h 35m

Porto

Tue 11/11

1:45 pm-3:50 pm

2 stops31h 05m

$538

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 November is, on average, the cheapest month to fly to Porto from Maryland, with most prices found around $487. If you aren’t able to travel during the month of November, then book flights to Porto from Maryland during October instead. Flights to Porto in October, while not as cheap as those in November, still average around $563.

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 Maryland 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 Maryland at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Maryland to Porto flights?

You could potentially save up to 50% 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

Best Price Found

$241

Fastest flight time

9h 30m

Direct flights

None

Airports in Porto

1 airport
The best one-way flight to Porto from Maryland in the past 72 hours is $241. The best round-trip flight deal from Maryland to Porto found on momondo in the last 72 hours is $490.
The fastest flight from Maryland to Porto takes 9h 30m
There are no direct flights from Maryland to Porto. Popular non-direct routes for this connection are Baltimore/Washington Airport - Porto Airport, Philadelphia Airport - Porto Airport and Washington, D.C. Dulles Intl Airport - Porto Airport.
There is 1 airport near Porto: Porto (OPO)
  • 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 $434Free CancellationRating
8.0
7,985 reviews
Search Delta flights
KLMPriceFrom $454Free CancellationRating
7.8
1,381 reviews
Search KLM flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Lamego
Guimarães
Esposende
Chaves
Arcos de Valdevez
Espinho
Viseu
Ponte de Lima
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Pinhao
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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Mon 8/11
Mon 8/18

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