What is the cheapest airline that flies from Porto to District of Columbia?

Delta, KLM, and British Airways are the most popular carriers operating from Porto to District of Columbia

When did momondo last update prices for flights from Porto Airport to District of Columbia?

Prices for flights from Porto Airport to District of Columbia are refreshed on a daily basis.

How old do you have to be to fly from Porto Airport to District of Columbia?

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 Porto Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The travel and health documents you'll need for your trip to District of Columbia 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 District of Columbia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$374 Cheap Flights from Porto to District of Columbia in 2026/27

Find the cheapest flights from Porto to District of Columbia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:35 am - 2:49 pmOPO Porto-IAD Washington, D.C. Dulles Intl

32h 14m3 stops Madrid Barajas Miami Atlanta Hartsfield-Jackson

11:02 am - 3:15 pmIAD Washington, D.C. Dulles Intl-OPO Porto

23h 13m2 stops Miami Madrid Barajas

$590Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

5:00 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 15m1 stop Lisbon Humberto Delgado

10:30 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

18h 30m1 stop Lisbon Humberto Delgado

$613TAP AIR PORTUGAL

Thu, Nov 19 - Wed, Dec 2

8:30 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

11h 45m1 stop Lisbon Humberto Delgado

10:30 pm - 5:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

13h 30m1 stop Lisbon Humberto Delgado

$629TAP AIR PORTUGAL

Thu, Nov 19 - Wed, Dec 2

5:00 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 15m1 stop Lisbon Humberto Delgado

5:25 pm - 6:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 35m1 stop Lisbon Humberto Delgado

$631TAP AIR PORTUGAL

Thu, Jan 14 - Mon, Jan 25

8:30 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

11h 45m1 stop Lisbon Humberto Delgado

10:30 pm - 1:30 pmIAD Washington, D.C. Dulles Intl-OPO Porto

10h 00m1 stop Lisbon Humberto Delgado

$631TAP AIR PORTUGAL

Thu, Nov 19 - Wed, Dec 2

7:00 am - 2:40 pmOPO Porto-IAD Washington, D.C. Dulles Intl

12h 40m1 stop Lisbon Humberto Delgado

5:25 pm - 10:00 amIAD Washington, D.C. Dulles Intl-OPO Porto

11h 35m1 stop Lisbon Humberto Delgado

$632TAP AIR PORTUGAL

Tue, Jan 26 - Mon, Feb 8

7:00 am - 2:40 pmOPO Porto-IAD Washington, D.C. Dulles Intl

12h 40m1 stop Lisbon Humberto Delgado

5:25 pm - 3:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

16h 35m1 stop Lisbon Humberto Delgado

$632TAP AIR PORTUGAL

Tue, Jan 26 - Thu, Feb 11

8:30 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

11h 45m1 stop Lisbon Humberto Delgado

10:30 pm - 1:30 pmIAD Washington, D.C. Dulles Intl-OPO Porto

10h 00m1 stop Lisbon Humberto Delgado

$633TAP AIR PORTUGAL

Thu, Nov 19 - Wed, Dec 2

8:30 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

11h 45m1 stop Lisbon Humberto Delgado

5:25 pm - 10:00 amIAD Washington, D.C. Dulles Intl-OPO Porto

11h 35m1 stop Lisbon Humberto Delgado

$634TAP AIR PORTUGAL

Thu, Dec 3 - Thu, Dec 10

8:30 am - 3:15 pmOPO Porto-IAD Washington, D.C. Dulles Intl

11h 45m1 stop Lisbon Humberto Delgado

10:30 pm - 5:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

13h 30m1 stop Lisbon Humberto Delgado

$636TAP AIR PORTUGAL

Thu, Nov 19 - Wed, Dec 2

Cheap last minute flights

Enter your travel dates to find the best prices.

5:00 am - 4:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 45m1 stop Amsterdam Schiphol

6:40 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 55m1 stop Paris Charles de Gaulle

$747Multiple Airlines

Tue, Oct 27 - Tue, Nov 17

5:00 am - 4:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 45m1 stop Amsterdam Schiphol

3:00 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

14h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

$759Multiple Airlines

Tue, Oct 27 - Tue, Nov 17

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

10:30 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 30m1 stop Paris Charles de Gaulle

$778KLM

Sat, Oct 24 - Mon, Oct 26

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

7:40 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 55m1 stop Paris Charles de Gaulle

$778Air France

Sat, Oct 24 - Tue, Oct 27

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

10:30 pm - 9:55 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 25m1 stop Paris Charles de Gaulle

$788Air France

Sat, Oct 24 - Sun, Oct 25

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

7:40 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 55m1 stop Paris Charles de Gaulle

$799Delta

Sat, Oct 24 - Tue, Oct 27

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

7:45 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 50m1 stop Paris Charles de Gaulle

$799Delta

Sat, Oct 24 - Wed, Oct 28

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

10:30 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 30m1 stop Paris Charles de Gaulle

$799Delta

Sat, Oct 24 - Mon, Oct 26

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

12:30 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

18h 05m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$801Delta

Sat, Oct 24 - Wed, Oct 28

5:55 am - 7:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 40m1 stop Paris Charles de Gaulle

12:30 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

18h 05m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$801Delta

Sat, Oct 24 - Tue, Oct 27

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United Airlines flights from Porto to District of Columbia

Our best United Airlines deals on Porto to District of Columbia flight tickets

United Airlines

Jan 14

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Jan 17

IAD8:25 amWashington, D.C. Dulles Intl

25h 55m

2 stops

OPO3:20 pmPorto

$715

United Airlines

Jan 14

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Jan 17

IAD6:00 pmWashington, D.C. Dulles Intl

16h 20m

1 stop

OPO3:20 pmPorto

$716

United Airlines

Nov 19

OPO6:00 amPorto

13h 35m

1 stop

IAD2:35 pmWashington, D.C. Dulles Intl

Dec 2

IAD12:40 pmWashington, D.C. Dulles Intl

15h 50m

1 stop

OPO9:30 amPorto

$721

Lufthansa flights from Porto to District of Columbia

Our best Lufthansa deals on Porto to District of Columbia flight tickets

Lufthansa

Nov 14

OPO6:00 amPorto

14h 55m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

Nov 22

IAD6:00 pmWashington, D.C. Dulles Intl

12h 40m

1 stop

OPO11:40 amPorto

$658

Lufthansa

Nov 15

OPO6:15 amPorto

18h 50m

1 stop

IAD8:05 pmWashington, D.C. Dulles Intl

Nov 30

IAD6:00 pmWashington, D.C. Dulles Intl

16h 30m

1 stop

OPO3:30 pmPorto

$686

Lufthansa

Oct 23

OPO11:05 amPorto

13h 20m

1 stop

IAD7:25 pmWashington, D.C. Dulles Intl

Oct 26

IAD6:30 pmWashington, D.C. Dulles Intl

23h 55m

1 stop

OPO10:25 pmPorto

$923

momondo Fare Finder

Use the filters below to find and compare flights from Porto to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 12/3

11:35 am-2:49 pm

3 stops32h 14m

Washington, D.C. Dulles Intl

Thu 12/10

11:02 am-3:15 pm

2 stops23h 13m

$590

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 11/19

5:00 am-3:15 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Wed 12/2

10:30 pm-10:00 pm

1 stop18h 30m

$613

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 11/19

8:30 am-3:15 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 12/2

10:30 pm-5:00 pm

1 stop13h 30m

$629

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 1/14

5:00 am-3:15 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Mon 1/25

5:25 pm-6:00 pm

1 stop19h 35m

$631

Quickest round-trip

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 11/19

8:30 am-3:15 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 12/2

10:30 pm-1:30 pm

1 stop10h 00m

$631

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Tue 1/26

7:00 am-2:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Mon 2/8

5:25 pm-10:00 am

1 stop11h 35m

$632

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Tue 1/26

7:00 am-2:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 2/11

5:25 pm-3:00 pm

1 stop16h 35m

$632

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 11/19

8:30 am-3:15 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 12/2

10:30 pm-1:30 pm

1 stop10h 00m

$633

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 12/3

8:30 am-3:15 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 12/10

5:25 pm-10:00 am

1 stop11h 35m

$634

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 11/19

8:30 am-3:15 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 12/2

10:30 pm-5:00 pm

1 stop13h 30m

$636

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 District of Columbia

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

What is the cheapest month to fly to District of Columbia?

In general, March is the cheapest month to fly from Porto to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $554. If you don’t want to visit District of Columbia in March, then you should wait until February to fly from Porto, when ticket prices are also cheap, with an average price of $595.

Can stopping save me money on Porto to District of Columbia flights?

You could potentially save up to 27% on your flight if you consider stops on a Porto to District of Columbia flight.

Cheap Porto to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to District of Columbia

Best Price Found	$374
Fastest flight time	12h 40m
Direct flights	None

The best one-way flight to District of Columbia from Porto in the past 72 hours is $374. The best round-trip flight deal from Porto to District of Columbia found on momondo in the last 72 hours is $590.

The fastest flight from Porto to District of Columbia takes 12h 40m

There are no direct flights from Porto to District of Columbia. There are no popular flight routes from Porto to District of Columbia.

Search flight deals

Frequently asked questions about flying from Porto to District of Columbia

When did momondo last update prices for flights from Porto Airport to District of Columbia?
Prices for flights from Porto Airport to District of Columbia are refreshed on a daily basis.
How old do you have to be to fly from Porto Airport to District of Columbia?
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 Porto Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The travel and health documents you'll need for your trip to District of Columbia 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 District of Columbia. 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 District of Columbia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Porto to District of Columbia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Porto to District of Columbia with flexible booking policies on momondo?

All flight searches from Porto to District of Columbia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Porto to District of Columbia?

Once you have performed a search for Porto to District of Columbia 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 Porto to District of Columbia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to District of Columbia, momondo offers a useful price alert feature which will track prices for flights to District of Columbia from Porto and alert you when they change.