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Cheap flights from Porto to District of Columbia from $335

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to District of Columbia departing on 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Porto to District of Columbia

Cheap round-trip flights

TAP AIR PORTUGAL Logo
7:00 am - 3:20 pmOPO-IAD
13h 20m1 stop
TAP AIR PORTUGAL Logo
5:00 pm - 8:00 amIAD-OPO
10h 00m1 stop
$489TAP AIR PORTUGAL
Find Deal
Wed, Oct 8 - Tue, Oct 21
TAP AIR PORTUGAL Logo
8:50 am - 3:20 pmOPO-IAD
11h 30m1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 5:00 pmIAD-OPO
13h 25m1 stop
$496TAP AIR PORTUGAL
Find Deal
Fri, Aug 29 - Sat, Sep 13
Delta Logo
6:30 am - 3:35 pmOPO-IAD
14h 05m1 stop
Delta Logo
8:17 pm - 3:30 pmIAD-OPO
14h 13m2 stops
$551Delta
Find Deal
Thu, Sep 4 - Sat, Sep 20
Logo
4:20 pm - 3:35 pmOPO-IAD
28h 15m1 stop
Logo
7:59 pm - 3:30 pmIAD-OPO
14h 31m2 stops
$553
Find Deal
Wed, Oct 8 - Tue, Oct 21
Delta Logo
6:30 am - 3:35 pmOPO-IAD
14h 05m1 stop
Delta Logo
8:17 pm - 3:30 pmIAD-OPO
14h 13m2 stops
$556Delta
Find Deal
Thu, Sep 4 - Sat, Sep 20
Lufthansa Logo
6:00 am - 8:15 pmOPO-IAD
19h 15m1 stop
Lufthansa Logo
11:10 pm - 11:45 pmIAD-OPO
19h 35m1 stop
$560Lufthansa
Find Deal
Wed, Dec 24 - Sat, Jan 3
Lufthansa Logo
6:00 am - 3:50 pmOPO-IAD
14h 50m1 stop
Lufthansa Logo
11:10 pm - 11:45 pmIAD-OPO
19h 35m1 stop
$565Lufthansa
Find Deal
Wed, Dec 24 - Sat, Jan 3
KLM Logo
4:20 pm - 3:35 pmOPO-IAD
28h 15m1 stop
KLM Logo
5:25 pm - 10:15 pmIAD-OPO
23h 50m1 stop
$602KLM
Find Deal
Mon, Sep 1 - Mon, Sep 8
Logo
7:20 pm - 2:55 pmOPO-IAD
24h 35m2 stops
Logo
11:10 pm - 11:45 pmIAD-OPO
19h 35m1 stop
$603
Find Deal
Wed, Dec 24 - Sat, Jan 3
KLM Logo
6:40 am - 3:35 pmOPO-IAD
13h 55m1 stop
KLM Logo
5:25 pm - 3:35 pmIAD-OPO
17h 10m1 stop
$631KLM
Find Deal
Fri, Aug 22 - Mon, Sep 8

Lufthansa flights from Porto to District of Columbia

Our best Lufthansa deals on Porto to District of Columbia flight tickets
Lufthansa
Dec 24
OPO6:00 amPorto
19h 15m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Jan 3
IAD11:10 pmWashington, D.C. Dulles Intl
19h 35m
1 stop
OPO11:45 pmPorto
$560
Find similar
Lufthansa
Dec 24
OPO6:00 amPorto
14h 50m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Jan 3
IAD11:10 pmWashington, D.C. Dulles Intl
19h 35m
1 stop
OPO11:45 pmPorto
$565
Find similar
Lufthansa
Dec 24
OPO6:00 amPorto
14h 50m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Jan 3
IAD6:00 pmWashington, D.C. Dulles Intl
16h 05m
1 stop
OPO3:05 pmPorto
$567
Find similar

United Airlines flights from Porto to District of Columbia

Our best United Airlines deals on Porto to District of Columbia flight tickets
United Airlines
Sep 4
OPO6:00 amPorto
16h 42m
2 stops
DCA5:42 pmWashington, D.C. Reagan-National
Sep 20
DCA6:00 amWashington, D.C. Reagan-National
19h 55m
1 stop
OPO6:55 amPorto
$567
Find similar
United Airlines
Dec 24
OPO6:00 amPorto
30h 27m
2 stops
IAD7:27 amWashington, D.C. Dulles Intl
Jan 3
IAD5:15 pmWashington, D.C. Dulles Intl
37h 25m
2 stops
OPO11:40 amPorto
$570
Find similar
United Airlines
Dec 24
OPO6:00 amPorto
30h 06m
2 stops
IAD7:06 amWashington, D.C. Dulles Intl
Jan 3
IAD6:00 pmWashington, D.C. Dulles Intl
16h 05m
1 stop
OPO3:05 pmPorto
$575
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Porto to District of Columbia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 4, 2025.
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

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 10/8

7:00 am-3:20 pm

1 stop13h 20m

Washington, D.C. Dulles Intl

Tue 10/21

5:00 pm-8:00 am

1 stop10h 00m

$489

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 8/29

8:50 am-3:20 pm

1 stop11h 30m

Washington, D.C. Dulles Intl

Sat 9/13

10:35 pm-5:00 pm

1 stop13h 25m

$496

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/4

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Sat 9/20

8:17 pm-3:30 pm

2 stops14h 13m

$551

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 10/8

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Tue 10/21

7:59 pm-3:30 pm

2 stops14h 31m

$553

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/4

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Sat 9/20

8:17 pm-3:30 pm

2 stops14h 13m

$556

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 12/24

6:00 am-8:15 pm

1 stop19h 15m

Washington, D.C. Dulles Intl

Sat 1/3

11:10 pm-11:45 pm

1 stop19h 35m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 12/24

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Sat 1/3

11:10 pm-11:45 pm

1 stop19h 35m

$565

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 9/1

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Mon 9/8

5:25 pm-10:15 pm

1 stop23h 50m

$602

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 12/24

7:20 pm-2:55 pm

2 stops24h 35m

Washington, D.C. Dulles Intl

Sat 1/3

11:10 pm-11:45 pm

1 stop19h 35m

$603

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 8/22

6:40 am-3:35 pm

1 stop13h 55m

Washington, D.C. Dulles Intl

Mon 9/8

5:25 pm-3:35 pm

1 stop17h 10m

$631

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to District of Columbia from

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

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $616. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from Porto because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,018.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Porto in the morning is the least expensive time of day to depart. momondo users have found prices as low as $735 when looking at flights departing in the morning. Flights to District of Columbia are more costly in the afternoon, with an average ticket price of $1,068. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You could potentially save up to 7% 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

$335

Fastest flight time

11h 05m

Direct flights

None

Airports in District of Columbia

2 airports
The best one-way flight to District of Columbia from Porto in the past 72 hours is $335. The best round-trip flight deal from Porto to District of Columbia found on momondo in the last 72 hours is $489.
The fastest flight from Porto to District of Columbia takes 11h 05m
There are no direct flights from Porto to District of Columbia. Popular non-direct routes for this connection are Porto Airport - Washington, D.C. Reagan-National Airport and Porto Airport - Washington, D.C. Dulles Intl Airport.
There are 2 airports near District of Columbia: Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD)
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  • 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?

  • 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 PORTUGALPriceFrom $492Free CancellationRating
7.1
1,942 reviews
Search TAP AIR PORTUGAL flights

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.

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