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

TAP AIR PORTUGAL 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 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.

$352 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.

12:10 pm - 8:00 pm

OPO

IAD

12h 50m

1 stop

3:25 pm - 11:15 am

IAD

OPO

14h 50m

1 stop

$615Lufthansa

Thu, Jun 4 - Sun, Jun 14

7:20 pm - 4:45 pm

OPO

IAD

26h 25m

1 stop

8:20 pm - 6:30 pm

IAD

OPO

17h 10m

1 stop

$652SWISS

Fri, Sep 25 - Wed, Sep 30

6:00 am - 3:50 pm

OPO

IAD

14h 50m

1 stop

6:00 pm - 10:25 pm

IAD

OPO

23h 25m

1 stop

$659Lufthansa

Sun, Nov 1 - Mon, Nov 30

6:00 am - 4:05 pm

OPO

IAD

15h 05m

1 stop

5:25 pm - 12:40 pm

IAD

OPO

14h 15m

1 stop

$676Multiple Airlines

Fri, Aug 28 - Mon, Aug 31

6:00 am - 4:05 pm

OPO

IAD

15h 05m

1 stop

5:55 pm - 11:15 am

IAD

OPO

12h 20m

1 stop

$677Lufthansa

Tue, Sep 1 - Mon, Sep 7

6:00 am - 4:05 pm

OPO

IAD

15h 05m

1 stop

12:35 pm - 9:30 am

IAD

OPO

16h 55m

1 stop

$691United Airlines

Thu, Oct 22 - Mon, Oct 26

4:50 pm - 1:30 pm

OPO

IAD

25h 40m

1 stop

5:35 pm - 4:00 pm

IAD

OPO

17h 25m

1 stop

$693Brussels Airlines

Fri, Jun 12 - Sun, Jun 14

6:00 am - 3:50 pm

OPO

IAD

14h 50m

1 stop

8:15 am - 9:30 am

IAD

OPO

20h 15m

1 stop

$696United Airlines

Fri, Nov 6 - Mon, Nov 9

6:00 am - 8:00 pm

OPO

DCA

19h 00m

2 stops

11:00 am - 11:15 am

DCA

OPO

20h 15m

2 stops

$703Air Canada

Thu, Oct 22 - Mon, Oct 26

6:00 am - 10:34 pm

OPO

DCA

21h 34m

2 stops

6:00 am - 6:30 pm

DCA

OPO

32h 30m

2 stops

$707Air Canada

Thu, Oct 22 - Mon, Oct 26

SWISS flights from Porto to District of Columbia

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

SWISS

Sep 25

OPO7:20 pmPorto

26h 25m

1 stop

IAD4:45 pmWashington, D.C. Dulles Intl

Sep 30

IAD8:20 pmWashington, D.C. Dulles Intl

17h 10m

1 stop

OPO6:30 pmPorto

$652

SWISS

Jun 1

OPO7:20 pmPorto

24h 00m

2 stops

IAD2:20 pmWashington, D.C. Dulles Intl

Jun 14

IAD5:40 pmWashington, D.C. Dulles Intl

15h 05m

2 stops

OPO1:45 pmPorto

$762

SWISS

Jun 1

OPO7:20 pmPorto

24h 00m

2 stops

IAD2:20 pmWashington, D.C. Dulles Intl

Jun 14

IAD10:15 pmWashington, D.C. Dulles Intl

15h 00m

2 stops

OPO6:15 pmPorto

$775

United Airlines flights from Porto to District of Columbia

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

United Airlines

Oct 22

OPO6:00 amPorto

15h 05m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

Oct 26

IAD12:35 pmWashington, D.C. Dulles Intl

16h 55m

1 stop

OPO9:30 amPorto

$691

United Airlines

Nov 6

OPO6:00 amPorto

14h 50m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

Nov 9

IAD8:15 amWashington, D.C. Dulles Intl

20h 15m

1 stop

OPO9:30 amPorto

$696

United Airlines

May 29

OPO6:00 amPorto

14h 15m

1 stop

IAD3:15 pmWashington, D.C. Dulles Intl

Jun 14

IAD6:33 amWashington, D.C. Dulles Intl

19h 22m

1 stop

OPO6:55 amPorto

$697

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 6/4

12:10 pm-8:00 pm

1 stop12h 50m

Washington, D.C. Dulles Intl

Sun 6/14

3:25 pm-11:15 am

1 stop14h 50m

$615

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 9/25

7:20 pm-4:45 pm

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 9/30

8:20 pm-6:30 pm

1 stop17h 10m

$652

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 11/1

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Mon 11/30

6:00 pm-10:25 pm

1 stop23h 25m

$659

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 8/28

6:00 am-4:05 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

Mon 8/31

5:25 pm-12:40 pm

1 stop14h 15m

$676

Quickest round-trip

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 9/1

6:00 am-4:05 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

Mon 9/7

5:55 pm-11:15 am

1 stop12h 20m

$677

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 10/22

6:00 am-4:05 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

Mon 10/26

12:35 pm-9:30 am

1 stop16h 55m

$691

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 6/12

4:50 pm-1:30 pm

1 stop25h 40m

Washington, D.C. Dulles Intl

Sun 6/14

5:35 pm-4:00 pm

1 stop17h 25m

$693

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 11/6

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Mon 11/9

8:15 am-9:30 am

1 stop20h 15m

$696

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 10/22

6:00 am-8:00 pm

2 stops19h 00m

Washington, D.C. Reagan-National

Mon 10/26

11:00 am-11:15 am

2 stops20h 15m

$703

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 10/22

6:00 am-10:34 pm

2 stops21h 34m

Washington, D.C. Reagan-National

Mon 10/26

6:00 am-6:30 pm

2 stops32h 30m

$707

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 $467.

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

You could potentially save up to 26% 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	12h 13m
Direct flights	None

The fastest flight from Porto to District of Columbia takes 12h 13m

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.