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

$438 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 Air Canada and United Airlines, with prices starting from $549 and $554, respectively.

What are the most popular airlines that fly from District of Columbia to Porto?

Consider American Airlines, Air France or Delta when booking your flight. These represent the most popular airlines when flying from District of Columbia to Porto.

How far in advance should I book a flight from District of Columbia to Porto?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 28 days in advance, which can save you up to 61% on flights from District of Columbia to Porto compared to booking the week you need them. Waiting 28 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $625. For sooner than that we have options available in the next 3 days from $729.

What is the cheapest month to fly from District of Columbia to Porto?

Our data shows that November tends to be the cheapest month to fly to Porto from District of Columbia. Users have commonly found prices around $672 for the month, but tickets can be as low as $417. Due to multiple factors, prepare for potentially higher prices in June.

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.

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.

$352+ Flights from District of Columbia to Porto

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from District of Columbia to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from District of Columbia to Porto

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$675 (Mytrip)
One-way from	$352 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$702

Provider with most accurate pricing for Washington, D.C. (WAS)-Porto flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Porto flights.

Search Deals

From District of Columbia to Porto

Search Deals

One-way flight from District of Columbia to Porto

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($180 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 30, 2025.

Fri 10/1710:45 pmIAD - OPO

2 stops27h 50mIberia

Fri 10/248:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/28

$672

Mon 5/1210:25 amIAD - OPO

3 stops31h 00mMultiple Airlines

Wed 5/217:15 amOPO - IAD

2 stops32h 59mMultiple Airlines

Deal found 4/28

$675

Sat 8/1610:35 pmIAD - OPO

1 stop13h 25mTAP AIR PORTUGAL

Sun 8/316:00 pmOPO - IAD

1 stop26h 20mTAP AIR PORTUGAL

Deal found 4/27

$677

Mon 7/145:31 pmIAD - OPO

1 stop11h 04mUnited Airlines

Tue 7/2212:50 pmOPO - IAD

2 stops28h 03mUnited Airlines

Deal found 4/28

$686

Tue 9/1612:55 pmDCA - OPO

2 stops39h 25mAir Canada

Tue 9/2312:50 pmOPO - DCA

1 stop26h 30mAir Canada

Deal found 4/29

$687

Tue 8/55:15 pmDCA - OPO

1 stop9h 30mUnited Airlines

Tue 8/1212:50 pmOPO - DCA

2 stops28h 30mUnited Airlines

Deal found 4/28

$690

Wed 7/167:00 amDCA - OPO

1 stop21h 45mMultiple Airlines

Thu 7/2412:10 pmOPO - DCA

1 stop27h 08mMultiple Airlines

Deal found 4/28

$691

Tue 9/165:22 pmIAD - OPO

2 stops34h 58mAir Canada

Tue 9/2312:50 pmOPO - IAD

1 stop27h 23mAir Canada

Deal found 4/29

$694

Wed 10/227:50 pmIAD - OPO

2 stops14h 45mDelta

Fri 10/3111:45 amOPO - IAD

2 stops15h 15mDelta

Deal found 4/28

$706

Mon 5/128:45 pmIAD - OPO

1 stop30h 10mSWISS

Wed 5/2112:20 pmOPO - IAD

1 stop32h 55mSWISS

Deal found 4/27

$711

Wed 10/85:44 pmDCA - OPO

2 stops12h 56mAmerican Airlines

Wed 10/228:15 amOPO - DCA

2 stops15h 22mAmerican Airlines

Deal found 4/29

$717

Mon 8/46:30 pmIAD - OPO

1 stop16h 00mKLM

Mon 8/116:25 pmOPO - IAD

1 stop26h 10mKLM

Deal found 4/28

$725

Best flights from District of Columbia to Porto
Discover carefully curated flight deals from District of Columbia to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2025.

Mon 5/1210:25 amIAD - OPO

3 stops31h 00mMultiple Airlines

Wed 5/217:15 amOPO - IAD

2 stops32h 59mMultiple Airlines

Deal found 4/28

$675

Sun 7/135:05 pmDCA - OPO

2 stops13h 35mAmerican Airlines

Wed 7/2312:20 pmOPO - DCA

2 stops15h 51mAmerican Airlines

Deal found 4/29

$678

Wed 6/259:40 amDCA - OPO

1 stop18h 40mUnited Airlines

Thu 7/312:10 pmOPO - DCA

2 stops27h 17mUnited Airlines

Deal found 4/28

$696

Mon 7/145:31 pmIAD - OPO

1 stop11h 04mAir Canada

Tue 7/2212:50 pmOPO - IAD

1 stop13h 11mAir Canada

Deal found 4/29

$698

Mon 5/128:45 pmIAD - OPO

1 stop30h 10mSWISS

Wed 5/2112:20 pmOPO - IAD

1 stop32h 55mSWISS

Deal found 4/28

$711

Mon 5/1212:25 pmIAD - OPO

2 stops14h 55mDelta

Wed 5/216:15 amOPO - IAD

1 stop14h 20mDelta

Deal found 4/28

$719

Tue 6/35:00 pmIAD - OPO

1 stop21h 00mTAP AIR PORTUGAL

Tue 6/107:00 amOPO - IAD

1 stop13h 20mTAP AIR PORTUGAL

Deal found 4/29

$751

Mon 5/1212:35 pmDCA - OPO

2 stops14h 00mIberia

Wed 5/2112:20 pmOPO - DCA

2 stops15h 16mIberia

Deal found 4/29

$785

Thu 5/155:25 pmIAD - OPO

1 stop21h 15mKLM

Thu 5/226:30 amOPO - IAD

2 stops15h 14mKLM

Deal found 4/29

$790

Fri 6/2011:10 amDCA - OPO

1 stop14h 40mBrussels Airlines

Fri 6/279:00 amOPO - DCA

1 stop13h 49mBrussels Airlines

Deal found 4/29

$790

Tue 7/110:20 pmIAD - OPO

2 stops19h 30mLufthansa

Wed 7/96:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 4/29

$797

Sun 5/111:30 pmIAD - OPO

1 stop21h 20mTurkish Airlines

Sun 5/2510:45 amOPO - IAD

1 stop30h 00mTurkish Airlines

Deal found 4/29

$897

Last-minute flights from District of Columbia to Porto
Discover last-minute flight deals from District of Columbia to Porto. Data last updated April 30, 2025 and is based on user searches.

Sun 5/48:45 pmIAD - OPO

1 stop16h 30mSWISS

Fri 5/168:40 amOPO - IAD

1 stop12h 35mSWISS

Deal found 4/27

$857

Sun 5/41:30 pmIAD - OPO

1 stop21h 20mTurkish Airlines

Sun 5/1810:45 amOPO - IAD

1 stop30h 00mTurkish Airlines

Deal found 4/29

$1,003

Sun 5/49:45 amIAD - OPO

2 stops21h 15mAir Canada

Sun 5/186:15 amOPO - IAD

2 stops30h 40mAir Canada

Deal found 4/29

$1,131

Sun 5/412:45 pmDCA - OPO

2 stops23h 15mTAP AIR PORTUGAL

Sun 5/186:00 pmOPO - DCA

1 stop20h 20mTAP AIR PORTUGAL

Deal found 4/29

$1,305

Mon 5/58:30 pmIAD - OPO

2 stops22h 10mMultiple Airlines

Wed 5/145:35 pmOPO - IAD

2 stops26h 45mMultiple Airlines

Deal found 4/28

$722

Mon 5/57:25 pmIAD - OPO

1 stop19h 25mBritish Airways

Wed 5/148:15 amOPO - IAD

1 stop11h 45mBritish Airways

Deal found 4/28

$851

Mon 5/56:00 amDCA - OPO

2 stops24h 15mAir Canada

Wed 5/146:00 amOPO - DCA

2 stops20h 53mAir Canada

Deal found 4/28

$859

Mon 5/52:00 pmDCA - OPO

2 stops16h 15mUnited Airlines

Wed 5/1412:35 pmOPO - DCA

1 stop12h 06mUnited Airlines

Deal found 4/28

$977

Tue 5/610:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

Tue 5/1310:30 pmOPO - IAD

1 stop21h 50mTAP AIR PORTUGAL

Deal found 4/29

$723

Tue 5/611:00 amDCA - OPO

3 stops23h 00mMultiple Airlines

Tue 5/1310:50 pmOPO - DCA

3 stops24h 17mMultiple Airlines

Deal found 4/28

$800

Tue 5/610:05 pmIAD - OPO

2 stops16h 10mScandinavian Airlines

Sun 5/115:00 amOPO - IAD

2 stops43h 59mScandinavian Airlines

Deal found 4/29

$1,666

Tue 5/612:35 pmDCA - OPO

2 stops18h 05mAmerican Airlines

Sun 5/118:15 amOPO - DCA

2 stops15h 36mAmerican Airlines

Deal found 4/29

$1,827

One-way flights from District of Columbia to Porto
Search for one-way flight options from District of Columbia to Porto. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Mon 6/301:29 pmIAD - OPO

2 stops27h 26mMultiple Airlines

Deal found 4/29

$352

Mon 6/165:45 pmIAD - OPO

1 stop20h 15mTAP AIR PORTUGAL

Deal found 4/28

$438

Wed 6/258:18 amIAD - OPO

2 stops20h 02mAir Canada

Deal found 4/29

$549

Wed 6/2512:55 pmDCA - OPO

2 stops15h 25mAir Canada

Deal found 4/29

$549

Sun 6/293:05 pmDCA - OPO

1 stop10h 50mUnited Airlines

Deal found 4/29

$554

Tue 5/205:35 pmIAD - OPO

1 stop17h 50mBrussels Airlines

Deal found 4/28

$567

Tue 7/19:20 pmIAD - OPO

1 stop13h 10mAir France

Deal found 4/29

$572

Tue 6/1710:20 pmIAD - OPO

1 stop20h 00mLufthansa

Deal found 4/28

$610

Wed 6/411:10 amDCA - OPO

1 stop18h 20mTAP AIR PORTUGAL

Deal found 4/29

$626

Sat 5/176:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 4/29

$632

Sat 5/39:40 amDCA - OPO

3 stops24h 30mMultiple Airlines

Deal found 4/29

$643

Tue 5/64:31 pmDCA - OPO

2 stops17h 59mDelta

Deal found 4/29

$651

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 5/12

10:25 am-10:25 pm

3 stops31h 00m

Porto

Wed 5/21

7:15 am-11:14 am

2 stops32h 59m

$675

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 7/23

5:50 pm-10:55 am

1 stop12h 05m

Porto

Fri 8/8

9:05 am-3:20 pm

1 stop11h 15m

$678

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 7/14

5:31 pm-9:35 am

1 stop11h 04m

Porto

Tue 7/22

12:50 pm-11:53 am

2 stops28h 03m

$686

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 7/16

7:00 am-9:45 am

1 stop21h 45m

Porto

Thu 7/24

12:10 pm-10:18 am

1 stop27h 08m

$691

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 6/25

9:40 am-9:20 am

1 stop18h 40m

Porto

Thu 7/3

12:10 pm-10:27 am

2 stops27h 17m

$696

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 7/14

4:30 pm-9:35 am

1 stop12h 05m

Porto

Tue 7/22

12:50 pm-9:48 pm

1 stop13h 58m

$698

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 7/13

5:12 pm-9:35 am

2 stops35h 23m

Porto

Thu 7/24

12:10 pm-9:01 pm

1 stop13h 51m

$705

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 5/12

8:45 pm-7:55 am

1 stop30h 10m

Porto

Wed 5/21

12:20 pm-4:15 pm

1 stop32h 55m

$711

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 5/12

12:25 pm-8:20 am

2 stops14h 55m

Porto

Wed 5/21

6:15 am-3:35 pm

1 stop14h 20m

$719

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/1

2:54 pm-7:30 pm

2 stops23h 36m

Porto

Tue 7/8

12:20 pm-11:11 pm

2 stops15h 51m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 34 results

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 $1,071). 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?

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

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

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

Read through reviews of airlines operating flights from District of Columbia to Porto, such as Delta, KLM and SWISS. 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

7,929 reviews

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

7,929 reviews

Delta

8.0

Very good

7,929 reviews

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

1,334 reviews

Delta

8.0

Very good

7,929 reviews

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

1,588 reviews

Delta

8.0

Very good

7,929 reviews

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

1,446 reviews

Delta

8.0

Very good

7,929 reviews

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.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,929 reviews

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

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?
$438 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 Air Canada and United Airlines, with prices starting from $549 and $554, 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 $1,071). 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

Aveiro

Coimbra

Matosinhos

Arcos de Valdevez

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for District of Columbia to Porto

John F Kennedy Intl to Lisbon flights

Newark to Lisbon flights

Boston to Lisbon flights

LaGuardia to Lisbon flights

Dulles Intl to Lisbon flights

Newark to Porto flights

Miami to Lisbon flights

O'Hare Intl to Lisbon flights

San Francisco to Lisbon flights

John F Kennedy Intl to Porto flights

Boston to Ponta Delgada flights

Reagan-National to Lisbon flights

Los Angeles to Lisbon flights

Baltimore to Lisbon flights

Dallas/Fort Worth to Lisbon flights

Philadelphia to Lisbon flights

John F Kennedy Intl to Ponta Delgada flights

Boston to Porto flights

Seattle to Lisbon flights

LaGuardia to Porto flights

Newark to Ponta Delgada flights

Atlanta to Lisbon flights

Hobby to Lisbon flights

Denver to Lisbon flights

Midway to Lisbon flights

Newark to Funchal flights

Love Field to Lisbon flights

John F Kennedy Intl to Faro flights

Dulles Intl to Porto flights

Newark to Faro flights

John F Kennedy Intl to Funchal flights

George Bush Intcntl to Lisbon flights

Reagan-National to Porto flights

Minneapolis to Lisbon flights

Orlando to Lisbon flights

Charlotte to Lisbon flights

Sky Harbor Intl to Lisbon flights

Portland to Lisbon flights

Raleigh to Lisbon flights

Baltimore to Porto flights

O'Hare Intl to Porto flights

San Diego to Lisbon flights

Stewart to Lisbon flights

LaGuardia to Funchal flights

Tampa to Lisbon flights

Detroit to Lisbon flights

San Francisco to Porto flights

Los Angeles to Porto flights

Dallas/Fort Worth to Porto flights

Boston to Funchal flights

Other flights to Porto

Porto to Bilbao flights

Porto to Faro flights

Porto to Málaga flights

Porto to Luxembourg flights

Porto to Seville flights

Porto to Valencia flights

Porto to Marrakech flights

Porto to Faro flights

Porto to Funchal flights

Porto to Madrid flights

Porto to Lisbon flights

Porto to Geneva flights

Porto to Barcelona-El Prat Airport flights

Porto to Paris Orly Airport flights

Porto to Berlin flights

Porto to Milan Malpensa Airport flights

Porto to Oslo Gardermoen Airport flights

Porto to Ibiza flights

Top 8 airlines flying from District of Columbia to Porto

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest$422	Average$818	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$423	Average$754	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$435	Average$684	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$457	Average$738	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$538	Average$934	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$567	Average$828	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$579	Average$798	FlexibilityNo cancel fee	On-time77%
Lufthansa	Cheapest$603	Average$754	FlexibilityNo cancel fee	On-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$352+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 April 30, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from District of Columbia to Porto

Cheapest flights from District of Columbia to PortoExplore 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 April 30, 2025.

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 April 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Porto that are best for you.

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.

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?

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 April 30, 2025.

Rainfall in Porto by month

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

Temperature in Porto by month

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

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 April 30, 2025.

Read through reviews of airlines operating flights from District of Columbia to Porto, such as Delta, KLM and SWISS. 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.

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?

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

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

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

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

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

Traveling to a place near District of Columbia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for District of Columbia to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from District of Columbia to Porto

100% Free

Book with Flexibility

Travel Smart

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 April 30, 2025.