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.

$342 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.

5:05 am - 2:25 pm

OPO

IAD

14h 20m

1 stop

11:30 pm - 3:00 pm

IAD

OPO

11h 30m

1 stop

$586TAP AIR PORTUGAL

Fri, Oct 23 - Fri, Oct 30

7:20 pm - 4:45 pm

OPO

IAD

26h 25m

1 stop

8:20 pm - 6:30 pm

IAD

OPO

17h 10m

1 stop

$624SWISS

Thu, Aug 27 - Wed, Sep 9

7:20 pm - 4:45 pm

OPO

IAD

26h 25m

1 stop

8:20 pm - 6:30 pm

IAD

OPO

17h 10m

1 stop

$626SWISS

Thu, Aug 27 - Wed, Sep 9

8:20 am - 6:55 pm

OPO

IAD

15h 35m

1 stop

5:00 pm - 8:00 pm

IAD

OPO

22h 00m

1 stop

$648Iberia

Thu, Aug 27 - Wed, Sep 9

8:40 pm - 3:30 pm

OPO

IAD

23h 50m

1 stop

8:25 pm - 11:45 am

IAD

OPO

10h 20m

1 stop

$652Iberia

Sun, Aug 30 - Tue, Sep 15

5:00 am - 3:35 pm

OPO

IAD

15h 35m

1 stop

6:26 pm - 3:25 pm

IAD

OPO

15h 59m

2 stops

$655Delta

Thu, Aug 27 - Wed, Sep 9

5:00 am - 3:35 pm

OPO

IAD

15h 35m

1 stop

6:26 pm - 3:25 pm

IAD

OPO

15h 59m

2 stops

$656Delta

Thu, Aug 27 - Wed, Sep 9

1:25 pm - 4:59 pm

OPO

DCA

32h 34m

1 stop

11:10 am - 10:30 am

DCA

OPO

18h 20m

1 stop

$673Air France

Thu, Aug 27 - Wed, Sep 9

6:00 am - 7:58 pm

OPO

DCA

18h 58m

2 stops

11:05 am - 11:15 am

DCA

OPO

19h 10m

2 stops

$693Air Canada

Fri, Nov 13 - Tue, Nov 17

6:00 am - 7:58 pm

OPO

DCA

18h 58m

2 stops

11:05 am - 11:15 am

DCA

OPO

19h 10m

2 stops

$699Air Canada

Fri, Nov 13 - Tue, Nov 17

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American Airlines flights from Porto to District of Columbia

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

American Airlines

Nov 13

OPO8:20 amPorto

15h 31m

2 stops

DCA6:51 pmWashington, D.C. Reagan-National

Nov 17

DCA5:45 pmWashington, D.C. Reagan-National

17h 15m

2 stops

OPO4:00 pmPorto

$724

American Airlines

Jul 24

OPO8:20 amPorto

12h 10m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

Aug 11

IAD1:23 pmWashington, D.C. Dulles Intl

17h 22m

2 stops

OPO11:45 amPorto

$747

American Airlines

Jul 24

OPO8:20 amPorto

12h 10m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

Aug 11

IAD1:23 pmWashington, D.C. Dulles Intl

13h 17m

2 stops

OPO7:40 amPorto

$748

TAP AIR PORTUGAL flights from Porto to District of Columbia

Our best TAP AIR PORTUGAL deals on Porto to District of Columbia flight tickets

TAP AIR PORTUGAL

Oct 23

OPO5:05 amPorto

14h 20m

1 stop

IAD2:25 pmWashington, D.C. Dulles Intl

Oct 30

IAD11:30 pmWashington, D.C. Dulles Intl

11h 30m

1 stop

OPO3:00 pmPorto

$586

TAP AIR PORTUGAL

Jul 7

OPO5:55 pmPorto

18h 51m

1 stop

DCA7:46 amWashington, D.C. Reagan-National

Jul 11

DCA5:47 pmWashington, D.C. Reagan-National

12h 08m

1 stop

OPO10:55 amPorto

$2,143

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 10/23

5:05 am-2:25 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Fri 10/30

11:30 pm-3:00 pm

1 stop11h 30m

$586

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 8/27

7:20 pm-4:45 pm

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 9/9

8:20 pm-6:30 pm

1 stop17h 10m

$624

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 8/27

7:20 pm-4:45 pm

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 9/9

8:20 pm-6:30 pm

1 stop17h 10m

$626

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 8/27

8:20 am-6:55 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/9

5:00 pm-8:00 pm

1 stop22h 00m

$648

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 8/30

8:40 pm-3:30 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Tue 9/15

8:25 pm-11:45 am

1 stop10h 20m

$652

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 8/27

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/9

6:26 pm-3:25 pm

2 stops15h 59m

$655

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 8/27

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/9

6:26 pm-3:25 pm

2 stops15h 59m

$656

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 8/27

1:25 pm-4:59 pm

1 stop32h 34m

Washington, D.C. Reagan-National

Wed 9/9

11:10 am-10:30 am

1 stop18h 20m

$673

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Fri 11/13

6:00 am-7:58 pm

2 stops18h 58m

Washington, D.C. Reagan-National

Tue 11/17

11:05 am-11:15 am

2 stops19h 10m

$693

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Fri 11/13

6:00 am-7:58 pm

2 stops18h 58m

Washington, D.C. Reagan-National

Tue 11/17

11:05 am-11:15 am

2 stops19h 10m

$699

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 $422. If you don’t want to visit District of Columbia in March, then you should wait until October to fly from Porto, when ticket prices are also cheap, with an average price of $481.

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

You could potentially save up to 4% 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

Fastest flight time	14h 33m
Direct flights	None

The fastest flight from Porto to District of Columbia takes 14h 33m

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.