What is the cheapest airline that flies from Porto to Maryland?

Royal Air Maroc, Iberia, and British Airways are the most popular carriers operating from Porto to Maryland

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

Prices for flights from Porto Airport to Maryland are refreshed on a daily basis.

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

There is 1 operator available for flights from Porto Airport to Maryland as of January 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Maryland.

What documentation or ID do you need to fly to Maryland?

The travel and health documents you'll need for your trip to Maryland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Maryland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$337 Cheap Flights from Porto to Maryland in 2026

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Find the cheapest flights from Porto to Maryland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 2:35 pm

OPO

IAD

13h 35m

1 stop

10:00 pm - 3:25 pm

IAD

OPO

12h 25m

1 stop

$440Lufthansa

Thu, Feb 12 - Wed, Feb 25

6:00 am - 2:35 pm

OPO

IAD

13h 35m

1 stop

10:00 pm - 3:25 pm

IAD

OPO

12h 25m

1 stop

$441Lufthansa

Thu, Feb 12 - Wed, Feb 25

9:00 am - 3:05 pm

OPO

IAD

11h 05m

1 stop

10:35 pm - 7:00 pm

IAD

OPO

15h 25m

1 stop

$445TAP AIR PORTUGAL

Tue, Apr 21 - Wed, Apr 29

5:05 am - 3:05 pm

OPO

IAD

15h 00m

1 stop

10:35 pm - 8:25 pm

IAD

OPO

16h 50m

1 stop

$446TAP AIR PORTUGAL

Tue, Apr 21 - Wed, Apr 29

6:00 am - 3:50 pm

OPO

IAD

14h 50m

1 stop

5:45 pm - 11:15 am

IAD

OPO

12h 30m

1 stop

$449Multiple Airlines

Thu, Feb 12 - Mon, Feb 16

6:00 am - 3:50 pm

OPO

IAD

14h 50m

1 stop

5:34 pm - 9:30 am

IAD

OPO

10h 56m

1 stop

$458United Airlines

Thu, Feb 12 - Wed, Feb 25

6:00 am - 3:50 pm

OPO

IAD

14h 50m

1 stop

5:45 pm - 11:15 am

IAD

OPO

12h 30m

1 stop

$459Multiple Airlines

Wed, Feb 25 - Wed, Mar 4

6:00 am - 8:15 pm

OPO

IAD

19h 15m

1 stop

8:36 am - 9:30 am

IAD

OPO

19h 54m

1 stop

$460United Airlines

Sat, Feb 14 - Sat, Feb 28

5:00 am - 7:56 pm

OPO

DCA

19h 56m

2 stops

12:05 pm - 10:30 am

DCA

OPO

17h 25m

2 stops

$470Delta

Thu, Feb 12 - Wed, Feb 25

5:00 am - 8:32 pm

OPO

DCA

20h 32m

2 stops

12:05 pm - 10:30 am

DCA

OPO

17h 25m

2 stops

$477Delta

Thu, Feb 12 - Wed, Feb 25

Iberia flights from Porto to Maryland

Our best Iberia deals on Porto to Maryland flight tickets

Iberia

May 5

OPO8:20 amPorto

15h 39m

2 stops

DCA6:59 pmWashington, D.C. Reagan-National

May 12

DCA5:59 pmWashington, D.C. Reagan-National

12h 46m

2 stops

OPO11:45 amPorto

$514

Iberia

May 5

OPO8:20 amPorto

12h 10m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

May 12

IAD5:40 pmWashington, D.C. Dulles Intl

33h 00m

2 stops

OPO7:40 amPorto

$530

Iberia

Jun 15

OPO8:20 amPorto

12h 10m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

Jul 19

IAD5:00 pmWashington, D.C. Dulles Intl

18h 00m

1 stop

OPO4:00 pmPorto

$541

Lufthansa flights from Porto to Maryland

Our best Lufthansa deals on Porto to Maryland flight tickets

Lufthansa

Feb 12

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Feb 25

IAD10:00 pmWashington, D.C. Dulles Intl

12h 25m

1 stop

OPO3:25 pmPorto

$440

Lufthansa

Feb 12

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Feb 25

IAD10:00 pmWashington, D.C. Dulles Intl

12h 25m

1 stop

OPO3:25 pmPorto

$441

Lufthansa

Feb 27

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Mar 15

IAD7:00 pmWashington, D.C. Dulles Intl

12h 40m

1 stop

OPO11:40 amPorto

$444

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 2/12

6:00 am-2:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Wed 2/25

10:00 pm-3:25 pm

1 stop12h 25m

$440

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 2/12

6:00 am-2:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Wed 2/25

10:00 pm-3:25 pm

1 stop12h 25m

$441

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

9:00 am-3:05 pm

1 stop11h 05m

Washington, D.C. Dulles Intl

Wed 4/29

10:35 pm-7:00 pm

1 stop15h 25m

$445

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

5:05 am-3:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 4/29

10:35 pm-8:25 pm

1 stop16h 50m

$446

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 2/12

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Mon 2/16

5:45 pm-11:15 am

1 stop12h 30m

$449

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 2/12

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Wed 2/25

5:34 pm-9:30 am

1 stop10h 56m

$458

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 2/25

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Wed 3/4

5:45 pm-11:15 am

1 stop12h 30m

$459

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 2/14

6:00 am-8:15 pm

1 stop19h 15m

Washington, D.C. Dulles Intl

Sat 2/28

8:36 am-9:30 am

1 stop19h 54m

$460

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 2/12

5:00 am-7:56 pm

2 stops19h 56m

Washington, D.C. Reagan-National

Wed 2/25

12:05 pm-10:30 am

2 stops17h 25m

$470

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 2/12

5:00 am-8:32 pm

2 stops20h 32m

Washington, D.C. Reagan-National

Wed 2/25

12:05 pm-10:30 am

2 stops17h 25m

$477

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Porto to Maryland

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

Prices

Airlines

Can stopping save me money on Porto to Maryland flights?

You could potentially save up to 51% on your flight if you consider stops on a Porto to Maryland flight.

Cheap Porto to Maryland flight deals and tips

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

Fastest flight time	12h 10m
Direct flights	None

The fastest flight from Porto to Maryland takes 12h 10m

There are no direct flights from Porto to Maryland. There are no popular flight routes from Porto to Maryland.

Search flight deals

When did momondo last update prices for flights from Porto Airport to Maryland?
Prices for flights from Porto Airport to Maryland are refreshed on a daily basis.
How many operators does momondo search for flights from Porto Airport to Maryland?
There is 1 operator available for flights from Porto Airport to Maryland as of January 2026.
How old do you have to be to fly from Porto Airport to Maryland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Maryland.
What documentation or ID do you need to fly to Maryland?
The travel and health documents you'll need for your trip to Maryland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Maryland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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 Porto to Maryland for you.

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

Yes. momondo allows you to filter the results for Porto to Maryland flights to just show those with flexible booking policies.

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

Once all potential Porto to Maryland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Maryland from Porto 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.