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District of Columbia

$360+ Cheap flights from Porto (OPO) to District of Columbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — IAD
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Porto to District of Columbia

Keep the following information in mind while searching for Porto to District of Columbia flight deals. Data was last updated April 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$543
(United Airlines)

One-way from

$360
(Kiwi.com)

Popular in

January

Cheapest in

May

Average price

$632
Provider with most accurate pricing for Porto-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Porto-Washington, D.C. (WAS) flights.
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From Porto to District of Columbia
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One-way flight from Porto to District of Columbia
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Highest demand for flights based on searches. 7% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Porto to District of Columbia

Cheapest flights from Porto to District of Columbia
Explore the most affordable flight options available from Porto to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/811:20 amOPO - DCA
1 stop27h 59mUnited Airlines
Sun 6/229:33 amDCA - OPO
1 stop16h 22mUnited Airlines
Deal found 4/29$543
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1212:10 pmOPO - IAD
1 stop28h 04mUnited Airlines
Wed 6/259:00 amIAD - OPO
1 stop17h 05mUnited Airlines
Deal found 4/29$543
This KLM deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/86:20 pmOPO - IAD
1 stop26h 15mKLM
Sat 6/215:25 pmIAD - OPO
1 stop19h 15mKLM
Deal found 4/29$557
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amOPO - DCA
2 stops20h 51mAir Canada
Tue 10/2111:00 amDCA - OPO
2 stops19h 30mAir Canada
Deal found 4/29$560
This British Airways deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/89:25 pmOPO - IAD
1 stop25h 10mBritish Airways
Sun 6/2210:40 pmIAD - OPO
1 stop16h 40mBritish Airways
Deal found 4/29$561
This British Airways deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/88:15 amOPO - DCA
2 stops28h 35mBritish Airways
Sun 6/226:59 pmDCA - OPO
2 stops20h 21mBritish Airways
Deal found 4/29$564
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/85:00 amOPO - IAD
1 stop15h 35mDelta
Sat 6/2112:13 pmIAD - OPO
2 stops17h 27mDelta
Deal found 4/29$607
This Lufthansa deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/86:15 amOPO - IAD
2 stops36h 15mLufthansa
Sun 6/2210:20 pmIAD - OPO
1 stop17h 40mLufthansa
Deal found 4/29$610
This Iberia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/208:15 amOPO - IAD
1 stop11h 45mIberia
Wed 10/14:35 pmIAD - OPO
1 stop18h 20mIberia
Deal found 4/29$638
This Lufthansa deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:00 amOPO - DCA
2 stops18h 03mMultiple Airlines
Wed 10/19:40 amDCA - OPO
2 stops20h 45mMultiple Airlines
Deal found 4/29$669
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/811:20 amOPO - IAD
2 stops27h 21mMultiple Airlines
Sat 6/213:30 pmIAD - OPO
2 stops14h 45mMultiple Airlines
Deal found 4/29$693
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/88:15 amOPO - DCA
2 stops19h 52mAmerican Airlines
Sat 6/212:54 pmDCA - OPO
2 stops15h 46mAmerican Airlines
Deal found 4/29$700

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from Porto to District of Columbia that are best for you.

Fly from

Porto

Fly to

District of Columbia

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 6/8

11:20 am-10:19 am

1 stop27h 59m

Washington, D.C. Reagan-National

Sun 6/22

9:33 am-6:55 am

1 stop16h 22m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 6/12

12:10 pm-11:14 am

1 stop28h 04m

Washington, D.C. Dulles Intl

Wed 6/25

9:00 am-7:05 am

1 stop17h 05m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

6:20 pm-3:35 pm

1 stop26h 15m

Washington, D.C. Dulles Intl

Sat 6/21

5:25 pm-5:40 pm

1 stop19h 15m

$557

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 10/8

6:00 am-9:51 pm

2 stops20h 51m

Washington, D.C. Reagan-National

Tue 10/21

11:00 am-11:30 am

2 stops19h 30m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

9:25 pm-5:35 pm

1 stop25h 10m

Washington, D.C. Dulles Intl

Sun 6/22

10:40 pm-8:20 pm

1 stop16h 40m

$561

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Sun 6/8

8:15 am-7:50 am

2 stops28h 35m

Washington, D.C. Reagan-National

Sun 6/22

6:59 pm-8:20 pm

2 stops20h 21m

$564

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sat 6/21

12:13 pm-10:40 am

2 stops17h 27m

$607

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 6/8

6:15 am-1:30 pm

2 stops36h 15m

Washington, D.C. Dulles Intl

Sun 6/22

10:20 pm-9:00 pm

1 stop17h 40m

$610

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 8/20

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 10/1

4:35 pm-3:55 pm

1 stop18h 20m

$638

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Wed 8/20

6:00 am-7:03 pm

2 stops18h 03m

Washington, D.C. Reagan-National

Wed 10/1

9:40 am-11:25 am

2 stops20h 45m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 38 results
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Best time to book a flight from Porto to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Porto with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto to District of Columbia

What is the cheapest time of day to fly from OPO to DC?

Find hourly flight availability from Porto to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

When flying from Porto to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to District of Columbia. Reviews last updated April 30, 2025.
Read reviews from past customers who have flown Emirates, Delta and KLM from Porto to District of Columbia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Emirates
8.0
Very good
3,213 reviews
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Delta
8.0
Very good
7,929 reviews
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
KLM
7.8
Good
1,334 reviews
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
SWISS
7.5
Good
1,588 reviews
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Air France
7.4
Good
1,446 reviews
Emirates
8.0
Very good
3,213 reviews

Boarding

8.1

Crew

8.3

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Related info for your journey

Find useful and relevant information for your journey from Porto to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to District of Columbia?

    For a flight from Porto to District of Columbia, you will be flying from Porto. Porto (OPO) is just 6.8 mi from the center of the city.

  • What are the cheapest airlines to fly from Porto to District of Columbia one-way?

    To fly one-way, consider booking your trip with Royal Air Maroc, which is currently one of the cheapest options available, starting at $384. TAP AIR PORTUGAL flights start at $418 while deals on Iberia start at $535 one-way.

  • Can I find deals for flights from Porto to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Porto to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to District of Columbia.

  • Can I find deals for business class flights from Porto to District of Columbia?

    Yes. Cheapflights offers flight deals from Porto to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Porto to District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Porto to District of Columbia (average of $309). Flying from Porto to District of Columbia in June is currently the most expensive (average of $373). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Porto to District of Columbia

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Top airline flying from Porto to District of Columbia

Discover the top airline that operate flights from Porto to District of Columbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$480Average$812FlexibilityNo cancel feeOn-timeN/A

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