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District of Columbia

$352+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — IAD
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$503
(American Airlines)

One-way from

$352
(oojo)

Popular in

January

Cheapest in

March
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. 8% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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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 February 22, 2025.

This American Airlines deal was found by Cheapflights users on 2/21. 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 4/138:15 amOPO - IAD
1 stop11h 45mAmerican Airlines
Sun 4/274:35 pmIAD - OPO
1 stop14h 05mAmerican Airlines
Deal found 2/21$503
This British Airways deal was found by Cheapflights users on 2/21. 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.
Sat 4/128:35 pmOPO - IAD
1 stop23h 25mIberia
Sat 4/194:35 pmIAD - OPO
1 stop10h 00mIberia
Deal found 2/21$513
This KLM deal was found by Cheapflights users on 2/21. 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 3/234:10 pmOPO - IAD
1 stop28h 35mKLM
Sun 3/307:40 pmIAD - OPO
1 stop14h 50mKLM
Deal found 2/21$521
This British Airways deal was found by Cheapflights users on 2/21. 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.
Thu 4/39:40 amOPO - IAD
1 stop15h 30mBritish Airways
Sat 4/197:25 pmIAD - OPO
1 stop20h 05mBritish Airways
Deal found 2/21$524
This Flightnetwork deal was found by Cheapflights users on 2/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/46:00 amOPO - IAD
2 stops39h 19mMultiple Airlines
Wed 6/1110:20 pmIAD - OPO
1 stop20h 00mMultiple Airlines
Deal found 2/22$526
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/236:00 amOPO - IAD
2 stops42h 41mUnited Airlines
Sun 3/3010:10 pmIAD - OPO
1 stop12h 30mUnited Airlines
Deal found 2/21$540
This Delta deal was found by Cheapflights users on 2/21. 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.
Thu 4/36:30 amOPO - DCA
2 stops21h 12mDelta
Sat 4/196:15 pmDCA - OPO
2 stops16h 20mDelta
Deal found 2/21$575
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/311:05 amOPO - IAD
1 stop13h 20mLufthansa
Sat 4/195:35 pmIAD - OPO
2 stops24h 10mLufthansa
Deal found 2/21$584
This SWISS deal was found by Cheapflights users on 2/21. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/317:20 pmOPO - IAD
2 stops23h 55mSWISS
Thu 5/158:45 pmIAD - OPO
1 stop16h 45mSWISS
Deal found 2/21$589
This Air Canada deal was found by Cheapflights users on 2/22. 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.
Mon 3/316:00 amOPO - IAD
2 stops32h 41mAir Canada
Thu 5/152:15 pmIAD - OPO
2 stops16h 50mAir Canada
Deal found 2/22$772
This United Airlines deal was found by Cheapflights users on 2/21. 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 4/312:35 pmOPO - DCA
1 stop12h 07mUnited Airlines
Sat 4/193:01 pmDCA - OPO
1 stop13h 44mUnited Airlines
Deal found 2/21$974

Find flights from Porto to District of Columbia within your budget

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 February 22, 2025.

Fly from

Porto

Fly to

District of Columbia

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 4/13

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Sun 4/27

4:35 pm-11:40 am

1 stop14h 05m

$503

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sat 4/12

8:35 pm-3:00 pm

1 stop23h 25m

Washington, D.C. Dulles Intl

Sat 4/19

4:35 pm-7:35 am

1 stop10h 00m

$513

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 3/23

4:10 pm-4:45 pm

1 stop28h 35m

Washington, D.C. Dulles Intl

Sun 3/30

7:40 pm-3:30 pm

1 stop14h 50m

$521

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/3

9:40 am-8:10 pm

1 stop15h 30m

Washington, D.C. Dulles Intl

Sat 4/19

7:25 pm-8:30 pm

1 stop20h 05m

$524

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 6/4

6:00 am-4:19 pm

2 stops39h 19m

Washington, D.C. Dulles Intl

Wed 6/11

10:20 pm-11:20 pm

1 stop20h 00m

$526

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 3/23

6:00 am-8:41 pm

2 stops42h 41m

Washington, D.C. Dulles Intl

Sun 3/30

10:10 pm-3:40 pm

1 stop12h 30m

$540

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 4/3

6:30 am-10:42 pm

2 stops21h 12m

Washington, D.C. Reagan-National

Sat 4/19

6:15 pm-3:35 pm

2 stops16h 20m

$575

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/3

11:05 am-7:25 pm

1 stop13h 20m

Washington, D.C. Dulles Intl

Sat 4/19

5:35 pm-10:45 pm

2 stops24h 10m

$584

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 3/31

7:20 pm-2:15 pm

2 stops23h 55m

Washington, D.C. Dulles Intl

Thu 5/15

8:45 pm-6:30 pm

1 stop16h 45m

$589

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 3/31

6:00 am-9:41 am

2 stops32h 41m

Washington, D.C. Dulles Intl

Thu 5/15

2:15 pm-12:05 pm

2 stops16h 50m

$772

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 27 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.

Travel insights for flights from Porto to District of Columbia

Get recent, data-driven insights about flights from Porto to District of Columbia including ideal travel times, pricing trends, and more.

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 February 22, 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 February 22, 2025.
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,332 reviews
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,566 reviews
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,754 reviews
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Turkish Airlines
7.3
Good
3,825 reviews
Delta
8.0
Very good
8,203 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $352. Iberia flights start at $490 while deals on British Airways start at $496 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 $389). 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.

See more FAQs

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Alternative routes for Porto to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$480Average$812FlexibilityNo cancel feeOn-timeN/A
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