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

Iberia 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.

$355 Cheap Flights from Porto to District of Columbia in 2026

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.

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$584Delta

Tue, Oct 13 - Tue, Oct 20

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

9:45 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

12h 40m1 stop Paris Charles de Gaulle

$585Delta

Tue, Sep 15 - Tue, Sep 22

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$586Delta

Thu, Oct 8 - Mon, Oct 19

5:00 am - 5:33 pmOPO Porto-IAD Washington, D.C. Dulles Intl

17h 33m2 stops Amsterdam Schiphol New York John F Kennedy Intl

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$587Delta

Wed, Oct 14 - Wed, Oct 21

5:55 am - 8:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

19h 15m1 stop Paris Charles de Gaulle

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$588Delta

Wed, Oct 7 - Tue, Oct 13

5:00 am - 4:37 pmOPO Porto-DCA Washington, D.C. Reagan-National

16h 37m2 stops Amsterdam Schiphol New York John F Kennedy Intl

5:05 pm - 3:25 pmDCA Washington, D.C. Reagan-National-OPO Porto

17h 20m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$589Delta

Wed, Oct 7 - Tue, Oct 13

5:00 am - 5:33 pmOPO Porto-IAD Washington, D.C. Dulles Intl

17h 33m2 stops Amsterdam Schiphol New York John F Kennedy Intl

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$589Delta

Wed, Oct 7 - Tue, Oct 13

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

18h 40m1 stop Paris Charles de Gaulle

6:15 pm - 3:30 pmIAD Washington, D.C. Dulles Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$590Air France

Wed, Sep 23 - Sun, Sep 27

5:00 am - 4:37 pmOPO Porto-DCA Washington, D.C. Reagan-National

16h 37m2 stops Amsterdam Schiphol New York John F Kennedy Intl

5:15 pm - 3:25 pmDCA Washington, D.C. Reagan-National-OPO Porto

17h 10m2 stops Boston Logan Intl Paris Charles de Gaulle

$591Delta

Thu, Oct 8 - Mon, Oct 19

5:00 am - 5:33 pmOPO Porto-IAD Washington, D.C. Dulles Intl

17h 33m2 stops Amsterdam Schiphol New York John F Kennedy Intl

6:32 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 53m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$591Delta

Thu, Oct 8 - Mon, Oct 19

Cheap last minute flights

Enter your travel dates to find the best prices.

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$585Multiple Airlines

Fri, Sep 4 - Thu, Sep 17

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$586Multiple Airlines

Fri, Sep 4 - Thu, Sep 17

5:00 am - 4:38 pmOPO Porto-IAD Washington, D.C. Dulles Intl

16h 38m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$593Multiple Airlines

Fri, Sep 4 - Thu, Sep 17

8:20 am - 6:55 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Madrid Barajas

8:30 pm - 11:45 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 15m1 stop Madrid Barajas

$595Iberia

Thu, Sep 3 - Thu, Sep 17

5:55 am - 4:38 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 43m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$597Air France

Fri, Sep 4 - Thu, Sep 17

5:55 am - 4:38 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 43m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$621Multiple Airlines

Thu, Sep 3 - Thu, Sep 17

5:55 am - 4:38 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 43m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

9:45 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 15m1 stop Paris Charles de Gaulle

$709Multiple Airlines

Thu, Sep 3 - Thu, Sep 17

5:00 am - 5:51 pmOPO Porto-DCA Washington, D.C. Reagan-National

17h 51m2 stops Amsterdam Schiphol Boston Logan Intl

11:10 am - 8:30 amDCA Washington, D.C. Reagan-National-OPO Porto

16h 20m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$765Delta

Fri, Sep 4 - Thu, Sep 17

12:45 pm - 10:59 pmOPO Porto-DCA Washington, D.C. Reagan-National

15h 14m1 stop New York John F Kennedy Intl

11:10 am - 8:30 amDCA Washington, D.C. Reagan-National-OPO Porto

16h 20m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$779Delta

Fri, Sep 4 - Thu, Sep 17

6:10 am - 4:05 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 55m1 stop Paris Charles de Gaulle

9:45 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

12h 40m1 stop Paris Charles de Gaulle

$792KLM

Sat, Sep 5 - Sat, Sep 19

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from Porto to District of Columbia

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

Delta

Sep 6

OPO5:00 amPorto

15h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Sep 19

IAD6:26 pmWashington, D.C. Dulles Intl

15h 59m

2 stops

OPO3:25 pmPorto

$582

Delta

Oct 13

OPO5:00 amPorto

15h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Oct 20

IAD6:32 pmWashington, D.C. Dulles Intl

15h 53m

2 stops

OPO3:25 pmPorto

$584

Delta

Sep 15

OPO5:00 amPorto

15h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Sep 22

IAD9:45 pmWashington, D.C. Dulles Intl

12h 40m

1 stop

OPO3:25 pmPorto

$585

Air France flights from Porto to District of Columbia

Our best Air France deals on Porto to District of Columbia flight tickets

Air France

Sep 23

OPO5:55 amPorto

18h 40m

1 stop

IAD7:35 pmWashington, D.C. Dulles Intl

Sep 27

IAD6:15 pmWashington, D.C. Dulles Intl

16h 15m

1 stop

OPO3:30 pmPorto

$590

Air France

Sep 4

OPO5:55 amPorto

15h 43m

2 stops

IAD4:38 pmWashington, D.C. Dulles Intl

Sep 17

IAD9:45 pmWashington, D.C. Dulles Intl

19h 15m

1 stop

OPO10:00 pmPorto

$597

Air France

Sep 5

OPO6:10 amPorto

15h 28m

2 stops

IAD4:38 pmWashington, D.C. Dulles Intl

Sep 19

IAD6:15 pmWashington, D.C. Dulles Intl

16h 10m

1 stop

OPO3:25 pmPorto

$808

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

Tue 10/13

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 10/20

6:32 pm-3:25 pm

2 stops15h 53m

$584

Quickest round-trip

PortoWashington, D.C.

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

OPOIAD

Porto

Tue 9/15

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 9/22

9:45 pm-3:25 pm

1 stop12h 40m

$585

PortoWashington, D.C.

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

OPOIAD

Porto

Thu 10/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 10/19

6:32 pm-3:25 pm

2 stops15h 53m

$586

PortoWashington, D.C.

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

OPOIAD

Porto

Wed 10/14

5:00 am-5:33 pm

2 stops17h 33m

Washington, D.C. Dulles Intl

Wed 10/21

6:32 pm-3:25 pm

2 stops15h 53m

$587

PortoWashington, D.C.

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

OPOIAD

Porto

Wed 10/7

5:55 am-8:10 pm

1 stop19h 15m

Washington, D.C. Dulles Intl

Tue 10/13

6:32 pm-3:25 pm

2 stops15h 53m

$588

PortoWashington, D.C.

OPO Porto - DCA Washington, D.C. Reagan-National

OPODCA

Porto

Wed 10/7

5:00 am-4:37 pm

2 stops16h 37m

Washington, D.C. Reagan-National

Tue 10/13

5:05 pm-3:25 pm

2 stops17h 20m

$589

PortoWashington, D.C.

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

OPOIAD

Porto

Wed 10/7

5:00 am-5:33 pm

2 stops17h 33m

Washington, D.C. Dulles Intl

Tue 10/13

6:32 pm-3:25 pm

2 stops15h 53m

$589

PortoWashington, D.C.

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

OPOIAD

Porto

Wed 9/23

5:55 am-7:35 pm

1 stop18h 40m

Washington, D.C. Dulles Intl

Sun 9/27

6:15 pm-3:30 pm

1 stop16h 15m

$590

PortoWashington, D.C.

OPO Porto - DCA Washington, D.C. Reagan-National

OPODCA

Porto

Thu 10/8

5:00 am-4:37 pm

2 stops16h 37m

Washington, D.C. Reagan-National

Mon 10/19

5:15 pm-3:25 pm

2 stops17h 10m

$591

PortoWashington, D.C.

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

OPOIAD

Porto

Thu 10/8

5:00 am-5:33 pm

2 stops17h 33m

Washington, D.C. Dulles Intl

Mon 10/19

6:32 pm-3:25 pm

2 stops15h 53m

$591

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 May to fly from Porto, when ticket prices are also cheap, with an average price of $567.

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	$355
Fastest flight time	14h 10m
Direct flights	None

The best one-way flight to District of Columbia from Porto in the past 72 hours is $355. The best round-trip flight deal from Porto to District of Columbia found on momondo in the last 72 hours is $584.

The fastest flight from Porto to District of Columbia takes 14h 10m

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.