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$257+ Cheap flights from District of Columbia to Porto (OPO)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — OPO
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from District of Columbia to Porto

Keep the following information in mind while searching for District of Columbia to Porto flight deals. Data was last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$620
(Mytrip)

One-way from

$368
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$596
Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.
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From District of Columbia to Porto
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One-way flight from District of Columbia to Porto
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Highest demand for flights based on searches. 21% potential increase in price ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from District of Columbia to Porto

Cheapest flights from District of Columbia to Porto
Explore the most affordable flight options available from District of Columbia to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This United Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 11/121:05 pmIAD - OPO
2 stops21h 10mUnited Airlines
Sun 11/1612:30 pmOPO - IAD
2 stops32h 31mUnited Airlines
Deal found 3/30$618
This FlightHub deal was found by Cheapflights users on 3/30. 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.
Thu 9/255:50 pmIAD - OPO
1 stop24h 10mTAP AIR PORTUGAL
Sun 10/59:15 pmOPO - IAD
1 stop28h 35mTAP AIR PORTUGAL
Deal found 3/30$619
This Delta deal was found by Cheapflights users on 3/31. 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 9/1412:30 pmIAD - OPO
2 stops22h 00mDelta
Tue 12/2311:15 amOPO - IAD
1 stop33h 30mDelta
Deal found 3/31$626
This Mytrip deal was found by Cheapflights users on 3/30. 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.
Tue 5/65:00 pmIAD - OPO
2 stops17h 00mMultiple Airlines
Tue 5/1310:50 pmOPO - IAD
2 stops21h 30mMultiple Airlines
Deal found 3/30$629
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:05 pmIAD - OPO
1 stop32h 05mScandinavian Airlines
Mon 9/812:00 pmOPO - IAD
1 stop12h 59mScandinavian Airlines
Deal found 3/30$651
This SWISS deal was found by Cheapflights users on 3/31. 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.
Thu 11/138:45 pmIAD - OPO
2 stops32h 05mSWISS
Sun 11/166:35 pmOPO - IAD
2 stops50h 55mSWISS
Deal found 3/31$663
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/231:30 pmIAD - OPO
1 stop21h 20mTurkish Airlines
Thu 5/811:05 amOPO - IAD
1 stop37h 40mTurkish Airlines
Deal found 3/30$671
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Tue 5/66:00 amDCA - OPO
2 stops28h 00mMultiple Airlines
Tue 5/137:35 amOPO - DCA
2 stops19h 18mMultiple Airlines
Deal found 3/31$675
This Air Canada deal was found by Cheapflights users on 3/30. 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 9/241:00 pmIAD - OPO
1 stop15h 25mAir Canada
Tue 10/76:00 amOPO - IAD
2 stops20h 01mAir Canada
Deal found 3/30$681
This Air Canada deal was found by Cheapflights users on 3/30. 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 9/244:35 pmDCA - OPO
1 stop11h 50mAir Canada
Tue 10/76:00 amOPO - DCA
2 stops20h 06mAir Canada
Deal found 3/30$681
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:15 pmDCA - OPO
1 stop9h 30mUnited Airlines
Tue 8/512:50 pmOPO - DCA
2 stops35h 40mUnited Airlines
Deal found 3/31$688
This KLM deal was found by Cheapflights users on 3/31. 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.
Mon 3/317:59 pmIAD - OPO
2 stops14h 31mKLM
Tue 4/86:20 amOPO - IAD
2 stops14h 58mKLM
Deal found 3/31$706

Cheapflights Fare Finder

Customize your flight search to find flights from District of Columbia to Porto 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 March 31, 2025.
Use the filters below to find and compare flights from District of Columbia to Porto that are best for you.

Fly from

District of Columbia

Fly to

Porto

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 9/25

5:50 pm-11:00 pm

1 stop24h 10m

Porto

Sun 10/5

9:15 pm-8:50 pm

1 stop28h 35m

$619

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 9/14

5:20 pm-9:45 am

1 stop11h 25m

Porto

Tue 12/23

6:00 am-3:50 pm

1 stop14h 50m

$625

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 9/14

12:30 pm-3:30 pm

2 stops22h 00m

Porto

Tue 12/23

11:15 am-3:45 pm

1 stop33h 30m

$626

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 5/6

5:00 pm-3:00 pm

2 stops17h 00m

Porto

Tue 5/13

10:50 pm-3:20 pm

2 stops21h 30m

$629

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 8/30

10:05 pm-11:10 am

1 stop32h 05m

Porto

Mon 9/8

12:00 pm-7:59 pm

1 stop12h 59m

$651

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/23

1:30 pm-3:50 pm

1 stop21h 20m

Porto

Thu 5/8

11:05 am-7:45 pm

1 stop37h 40m

$671

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 5/6

6:00 am-3:00 pm

2 stops28h 00m

Porto

Tue 5/13

7:35 am-9:53 pm

2 stops19h 18m

$675

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 9/24

1:00 pm-9:25 am

1 stop15h 25m

Porto

Tue 10/7

6:00 am-9:01 pm

2 stops20h 01m

$681

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 9/24

12:55 pm-9:25 am

2 stops15h 30m

Porto

Tue 10/7

6:00 am-9:06 pm

2 stops20h 06m

$681

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/8

5:15 pm-7:45 am

1 stop9h 30m

Porto

Tue 8/5

12:50 pm-7:30 pm

2 stops35h 40m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 42 results
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Best time to book a flight from District of Columbia to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from District of Columbia 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 District of Columbia to Porto

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

Currently, January is the cheapest month in which you can book a flight from District of Columbia to Porto (average of $523). Flying from District of Columbia to Porto in June is currently the most expensive (average of $1,084). 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.

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

Find hourly flight availability from District of Columbia to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to Porto as you normally would.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated March 31, 2025.
Read through reviews of airlines operating flights from District of Columbia to Porto, such as Delta, KLM and Austrian Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
770 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Porto. 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 into for flights to Porto from District of Columbia?

    Porto (OPO) is the airport you will fly into if you book a flight from District of Columbia to Porto. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.

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

    $390 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Lufthansa and Air Canada, with prices starting from $544 and $549, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from District of Columbia to Porto 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 District of Columbia to Porto?

    Currently, January is the cheapest month in which you can book a flight from District of Columbia to Porto (average of $523). Flying from District of Columbia to Porto in June is currently the most expensive (average of $1,084). 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

Traveling to a place near District of Columbia?

Book flights to District of Columbia if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for District of Columbia to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from District of Columbia to Porto

Discover the top 8 airlines that operate flights from District of Columbia to Porto. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$422Average$818FlexibilityNo cancel feeOn-time77%
DeltaCheapest$423Average$754FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$435Average$689FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$458Average$755FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$538Average$954FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$538Average$696FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$567Average$828FlexibilityNo cancel feeOn-time71%
IberiaCheapest$579Average$798FlexibilityNo cancel feeOn-time77%
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