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District of Columbia

$368+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — IAD
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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 abril 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$542
(Mytrip)

One-way from

$368
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$629
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. 6% potential increase in price ($51 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 abril 17, 2025.

This Mytrip deal was found by Cheapflights users on 4/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/186:35 pmOPO - IAD
1 stop25h 00mMultiple Airlines
lun. 6/28:45 pmIAD - OPO
1 stop30h 10mMultiple Airlines
Deal found 4/17$542
This United Airlines deal was found by Cheapflights users on 4/17. 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.
dom. 6/811:20 amOPO - DCA
1 stop15h 33mUnited Airlines
sáb. 6/217:00 amDCA - OPO
1 stop18h 55mUnited Airlines
Deal found 4/17$543
This KLM deal was found by Cheapflights users on 4/17. 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.
mié. 5/74:20 pmOPO - IAD
1 stop28h 15mKLM
mar. 5/136:30 pmIAD - OPO
1 stop16h 00mKLM
Deal found 4/17$545
This Delta deal was found by Cheapflights users on 4/17. 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.
mié. 5/76:20 amOPO - IAD
2 stops18h 19mDelta
mar. 5/139:25 pmIAD - OPO
1 stop13h 05mDelta
Deal found 4/17$553
This Air Canada deal was found by Cheapflights users on 4/17. 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.
mié. 10/86:00 amOPO - DCA
2 stops18h 44mAir Canada
mar. 10/2111:00 amDCA - OPO
2 stops19h 30mAir Canada
Deal found 4/17$567
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/86:15 amOPO - IAD
2 stops14h 35mLufthansa
mar. 10/2110:20 pmIAD - OPO
2 stops19h 30mLufthansa
Deal found 4/17$642
This Gotogate deal was found by Cheapflights users on 4/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/82:35 pmOPO - IAD
2 stops30h 40mSWISS
sáb. 6/218:45 pmIAD - OPO
1 stop16h 45mSWISS
Deal found 4/17$717
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/710:50 amOPO - IAD
1 stop29h 55mTurkish Airlines
mié. 5/211:30 pmIAD - OPO
1 stop21h 20mTurkish Airlines
Deal found 4/17$780
This American Airlines deal was found by Cheapflights users on 4/17. 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.
dom. 5/188:15 amOPO - DCA
2 stops15h 52mAmerican Airlines
lun. 6/212:35 pmDCA - OPO
2 stops14h 00mAmerican Airlines
Deal found 4/17$794
This Iberia deal was found by Cheapflights users on 4/17. 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.
dom. 5/188:35 pmOPO - DCA
2 stops31h 01mIberia
lun. 6/21:15 pmDCA - OPO
2 stops13h 20mIberia
Deal found 4/17$799
This United Airlines deal was found by Cheapflights users on 4/17. 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.
dom. 6/296:00 amOPO - IAD
1 stop14h 50mUnited Airlines
dom. 6/2910:15 pmIAD - OPO
2 stops30h 20mUnited Airlines
Deal found 4/17$906
This Mytrip deal was found by Cheapflights users on 4/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/86:00 pmOPO - DCA
3 stops32h 53mMultiple Airlines
sáb. 6/218:40 pmDCA - OPO
2 stops31h 20mMultiple Airlines
Deal found 4/17$980

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 abril 17, 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 - IAD

OPOIAD

Porto

dom. 5/18

6:35 pm-2:35 pm

1 stop25h 00m

Washington, D.C. Dulles Intl

lun. 6/2

8:45 pm-7:55 am

1 stop30h 10m

$542

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 6/8

11:20 am-9:53 pm

1 stop15h 33m

Washington, D.C. Reagan-National

sáb. 6/21

7:00 am-6:55 am

1 stop18h 55m

$543

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

mié. 5/7

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

mar. 5/13

6:30 pm-3:30 pm

1 stop16h 00m

$545

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

mié. 5/7

6:20 am-7:39 pm

2 stops18h 19m

Washington, D.C. Dulles Intl

mar. 5/13

9:25 pm-3:30 pm

1 stop13h 05m

$553

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

mié. 10/8

6:00 am-7:44 pm

2 stops18h 44m

Washington, D.C. Reagan-National

mar. 10/21

11:00 am-11:30 am

2 stops19h 30m

$567

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

mié. 10/8

6:15 am-3:50 pm

2 stops14h 35m

Washington, D.C. Dulles Intl

mar. 10/21

10:20 pm-10:50 pm

2 stops19h 30m

$642

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

dom. 6/8

2:35 pm-4:15 pm

2 stops30h 40m

Washington, D.C. Dulles Intl

sáb. 6/21

8:45 pm-6:30 pm

1 stop16h 45m

$717

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

mié. 5/7

10:50 am-11:45 am

1 stop29h 55m

Washington, D.C. Dulles Intl

mié. 5/21

1:30 pm-3:50 pm

1 stop21h 20m

$780

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 5/18

8:15 am-7:07 pm

2 stops15h 52m

Washington, D.C. Reagan-National

lun. 6/2

12:35 pm-7:35 am

2 stops14h 00m

$794

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 5/18

8:35 pm-10:36 pm

2 stops31h 01m

Washington, D.C. Reagan-National

lun. 6/2

1:15 pm-7:35 am

2 stops13h 20m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 32 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 abril 17, 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 abril 17, 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS from Porto to District of Columbia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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
1,580 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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
3,769 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

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 $383. TAP AIR PORTUGAL flights start at $416 while deals on British Airways start at $533 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 $383). 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

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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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$480Average$812FlexibilityNo cancel feeOn-timeN/A

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