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

Iberia, British Airways, and American Airlines 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 many operators does momondo search for flights from Porto Airport to District of Columbia?

There is 1 operator available for flights from Porto Airport to District of Columbia as of March 2026.

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.

$394 Cheap Flights from Porto to District of Columbia in 2026

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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.

10:30 pm - 3:10 pm

OPO

IAD

21h 40m

1 stop

5:40 pm - 10:00 am

IAD

OPO

11h 20m

1 stop

$565TAP AIR PORTUGAL

Mon, Apr 13 - Sun, Apr 26

10:30 pm - 3:10 pm

OPO

IAD

21h 40m

1 stop

10:35 pm - 7:00 pm

IAD

OPO

15h 25m

1 stop

$566TAP AIR PORTUGAL

Mon, Apr 13 - Sun, Apr 26

2:40 pm - 3:10 pm

OPO

IAD

29h 30m

2 stops

10:35 pm - 11:50 pm

IAD

OPO

20h 15m

2 stops

$588Multiple Airlines

Wed, Apr 15 - Sun, Apr 19

8:40 am - 4:45 pm

OPO

IAD

13h 05m

1 stop

8:20 pm - 11:25 am

IAD

OPO

34h 05m

1 stop

$657SWISS

Wed, Apr 15 - Sun, Apr 19

7:20 pm - 4:45 pm

OPO

IAD

26h 25m

1 stop

8:20 pm - 6:30 pm

IAD

OPO

17h 10m

1 stop

$661SWISS

Thu, May 14 - Wed, May 27

4:20 pm - 3:35 pm

OPO

IAD

28h 15m

1 stop

9:45 pm - 3:25 pm

IAD

OPO

12h 40m

1 stop

$672Multiple Airlines

Thu, Apr 16 - Sat, May 2

5:00 am - 3:35 pm

OPO

IAD

15h 35m

1 stop

9:45 pm - 3:25 pm

IAD

OPO

12h 40m

1 stop

$674Delta

Thu, Apr 23 - Wed, May 6

11:25 am - 11:40 pm

OPO

DCA

17h 15m

2 stops

5:00 pm - 3:25 pm

DCA

OPO

17h 25m

2 stops

$678Delta

Mon, Apr 13 - Sun, Apr 26

6:00 am - 10:48 pm

OPO

DCA

21h 48m

2 stops

4:35 pm - 3:40 pm

DCA

OPO

18h 05m

2 stops

$695United Airlines

Mon, Apr 27 - Mon, May 4

11:50 am - 9:48 pm

OPO

DCA

14h 58m

1 stop

3:05 pm - 6:55 am

DCA

OPO

10h 50m

1 stop

$713United Airlines

Thu, Sep 3 - Sun, Sep 6

Delta flights from Porto to District of Columbia

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

Delta

Apr 23

OPO5:00 amPorto

15h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

May 6

IAD9:45 pmWashington, D.C. Dulles Intl

12h 40m

1 stop

OPO3:25 pmPorto

$674

Delta

Apr 13

OPO11:25 amPorto

17h 15m

2 stops

DCA11:40 pmWashington, D.C. Reagan-National

Apr 26

DCA5:00 pmWashington, D.C. Reagan-National

17h 25m

2 stops

OPO3:25 pmPorto

$678

Delta

Apr 26

OPO5:00 amPorto

18h 08m

2 stops

IAD6:08 pmWashington, D.C. Dulles Intl

May 3

IAD9:45 pmWashington, D.C. Dulles Intl

12h 40m

1 stop

OPO3:25 pmPorto

$679

KLM flights from Porto to District of Columbia

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

KLM

Apr 21

OPO11:30 amPorto

33h 05m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Apr 29

IAD6:10 pmWashington, D.C. Dulles Intl

23h 05m

1 stop

OPO10:15 pmPorto

$685

KLM

Apr 21

OPO5:00 amPorto

15h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Apr 29

IAD6:15 pmWashington, D.C. Dulles Intl

33h 15m

1 stop

OPO8:30 amPorto

$698

KLM

Apr 4

OPO5:55 amPorto

18h 40m

1 stop

IAD7:35 pmWashington, D.C. Dulles Intl

Apr 18

IAD9:45 pmWashington, D.C. Dulles Intl

19h 15m

1 stop

OPO10:00 pmPorto

$720

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 - IAD

OPOIAD

Porto

Mon 4/13

10:30 pm-3:10 pm

1 stop21h 40m

Washington, D.C. Dulles Intl

Sun 4/26

5:40 pm-10:00 am

1 stop11h 20m

$565

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 4/13

10:30 pm-3:10 pm

1 stop21h 40m

Washington, D.C. Dulles Intl

Sun 4/26

10:35 pm-7:00 pm

1 stop15h 25m

$566

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 4/15

2:40 pm-3:10 pm

2 stops29h 30m

Washington, D.C. Dulles Intl

Sun 4/19

10:35 pm-11:50 pm

2 stops20h 15m

$588

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 4/15

8:40 am-4:45 pm

1 stop13h 05m

Washington, D.C. Dulles Intl

Sun 4/19

8:20 pm-11:25 am

1 stop34h 05m

$657

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 5/14

7:20 pm-4:45 pm

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 5/27

8:20 pm-6:30 pm

1 stop17h 10m

$661

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/16

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Sat 5/2

9:45 pm-3:25 pm

1 stop12h 40m

$672

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/23

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 5/6

9:45 pm-3:25 pm

1 stop12h 40m

$674

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 4/13

11:25 am-11:40 pm

2 stops17h 15m

Washington, D.C. Reagan-National

Sun 4/26

5:00 pm-3:25 pm

2 stops17h 25m

$678

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Mon 4/27

6:00 am-10:48 pm

2 stops21h 48m

Washington, D.C. Reagan-National

Mon 5/4

4:35 pm-3:40 pm

2 stops18h 05m

$695

Quickest round-trip

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 9/3

11:50 am-9:48 pm

1 stop14h 58m

Washington, D.C. Reagan-National

Sun 9/6

3:05 pm-6:55 am

1 stop10h 50m

$713

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

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

You could potentially save up to 2% 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	11h 46m
Direct flights	None

The fastest flight from Porto to District of Columbia takes 11h 46m

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

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 many operators does momondo search for flights from Porto Airport to District of Columbia?
There is 1 operator available for flights from Porto Airport to District of Columbia as of March 2026.
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.

Best airlines flying from Porto to District of Columbia

Compare and see reviews for airlines that fly from Porto to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $492	Free Cancellation	Rating 7.1 2,185 reviews		Search TAP AIR PORTUGAL flights

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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.

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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.