What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Porto round-trip?

Currently priced at $625, Lufthansa will fly you from Washington, D.C. Dulles Intl Airport to Porto and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and United Airlines - these airlines can fly you to your destination from $629 and $630, respectively. These flights start at 12% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Porto one-way?

$258 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 $354 and $359, respectively.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Porto?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Porto flight should consider departing on Friday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Porto?

Consider American Airlines, Delta or Iberia when booking your flight. These represent the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Porto.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Porto?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Porto. Check prices with Cheapflights to find a great deal for your trip.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Porto?

November is one of the best times of the year to fly to Porto from Washington, D.C. Dulles Intl Airport. Prices for November average $682 per person but you can even find prices for as low as $420. The most expensive prices can be found in the month of June. Opting for a November flight can save you 29% on your journey compared to booking in June

What airport do you fly into for flights to Porto from Washington, D.C. Dulles Intl?

Located just 6.8 mi from the city center, Porto is the airport most travelers will use when flying to Porto from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Porto (OPO) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 8 different airlines.

Can I find deals for flights from Dulles Intl to Porto that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Porto?

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

Can I find deals for business class flights from Dulles Intl to Porto?

Yes. Cheapflights offers flight deals from Dulles Intl 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.

$250+ Flights from Washington, D.C. Dulles Intl Airport to Porto

Q: How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Porto?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 41 days in advance, which can save you up to 52% on flights from Washington, D.C. Dulles Intl Airport to Porto compared to booking the week you need them. Waiting 41 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 $648. For sooner than that we have options available in the next 3 days from $729.

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Find cheap flights from Dulles Intl 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”

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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.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Porto are usually found in February or October, booked 58 days in advance, depart on a Sunday or Saturday and return on a Monday

Cheap flight deals from Dulles Intl to Porto

Round-trip from	$625 (Lufthansa)
One-way from	$250 (Mytrip)
Popular in	December
Cheapest in	February
Average price	$883

From Washington, D.C. Dulles Intl to Porto

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One-way flight from Washington, D.C. Dulles Intl to Porto

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Highest demand for flights based on searches. 0% potential increase in price ($5 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Dulles Intl to Porto

Cheapest flights from Dulles Intl to Porto
Explore the most affordable flight options available from Dulles Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

dom. 9/216:10 pmIAD - OPO

1 stop16h 30mLufthansa

vie. 10/106:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 7/10

$625

vie. 8/2210:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

vie. 8/298:50 amOPO - IAD

1 stop11h 30mTAP AIR PORTUGAL

Deal found 7/7

$629

jue. 8/215:53 pmIAD - OPO

1 stop10h 52mUnited Airlines

jue. 8/2812:10 pmOPO - IAD

2 stops30h 39mUnited Airlines

Deal found 7/8

$630

jue. 8/285:50 pmIAD - OPO

2 stops17h 15mMultiple Airlines

lun. 9/110:00 pmOPO - IAD

2 stops27h 50mMultiple Airlines

Deal found 7/9

$631

lun. 9/228:17 pmIAD - OPO

2 stops14h 13mKLM

mié. 10/88:10 pmOPO - IAD

1 stop24h 25mKLM

Deal found 7/8

$636

mar. 7/1512:12 pmIAD - OPO

2 stops15h 13mAir France

mar. 7/226:35 amOPO - IAD

1 stop17h 40mAir France

Deal found 7/10

$638

lun. 9/228:17 pmIAD - OPO

2 stops14h 13mDelta

jue. 10/94:20 pmOPO - IAD

2 stops29h 16mDelta

Deal found 7/8

$640

mar. 9/238:45 pmIAD - OPO

1 stop30h 00mSWISS

mié. 10/87:50 pmOPO - IAD

2 stops25h 25mSWISS

Deal found 7/10

$644

jue. 9/254:35 pmIAD - OPO

1 stop10h 00mIberia

jue. 10/98:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 7/9

$654

mar. 8/194:35 pmIAD - OPO

1 stop10h 00mBritish Airways

dom. 8/2412:20 pmOPO - IAD

1 stop31h 40mBritish Airways

Deal found 7/9

$659

dom. 9/215:13 pmIAD - OPO

2 stops35h 22mAir Canada

vie. 10/1011:05 amOPO - IAD

2 stops29h 08mAir Canada

Deal found 7/8

$666

Best flights from Dulles Intl to Porto
Discover carefully curated flight deals from Dulles Intl to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 11, 2025.

dom. 9/216:10 pmIAD - OPO

1 stop16h 30mLufthansa

jue. 10/96:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 7/10

$625

vie. 8/2210:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

vie. 8/298:50 amOPO - IAD

1 stop11h 30mTAP AIR PORTUGAL

Deal found 7/7

$629

jue. 8/215:53 pmIAD - OPO

1 stop10h 52mUnited Airlines

jue. 8/2812:10 pmOPO - IAD

2 stops30h 39mUnited Airlines

Deal found 7/8

$630

jue. 8/285:50 pmIAD - OPO

2 stops17h 15mMultiple Airlines

lun. 9/110:00 pmOPO - IAD

2 stops27h 50mMultiple Airlines

Deal found 7/9

$631

lun. 9/228:17 pmIAD - OPO

2 stops14h 13mKLM

mié. 10/88:10 pmOPO - IAD

1 stop24h 25mKLM

Deal found 7/8

$636

lun. 9/228:17 pmIAD - OPO

2 stops14h 13mDelta

jue. 10/94:20 pmOPO - IAD

2 stops29h 16mDelta

Deal found 7/8

$640

mar. 9/238:45 pmIAD - OPO

1 stop30h 00mSWISS

mié. 10/87:50 pmOPO - IAD

2 stops25h 25mSWISS

Deal found 7/10

$644

jue. 9/254:35 pmIAD - OPO

1 stop10h 00mIberia

jue. 10/98:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 7/9

$654

mar. 8/194:35 pmIAD - OPO

1 stop10h 00mBritish Airways

dom. 8/2412:20 pmOPO - IAD

1 stop31h 40mBritish Airways

Deal found 7/9

$659

dom. 9/215:13 pmIAD - OPO

2 stops35h 22mAir Canada

vie. 10/1011:05 amOPO - IAD

2 stops29h 08mAir Canada

Deal found 7/8

$666

Last-minute flights from Dulles Intl to Porto
Discover last-minute flight deals from Dulles Intl to Porto. Data last updated julio 11, 2025 and is based on user searches.

mar. 7/1512:12 pmIAD - OPO

2 stops15h 13mAir France

mar. 7/226:35 amOPO - IAD

1 stop17h 40mAir France

Deal found 7/10

$638

mar. 7/153:25 pmIAD - OPO

1 stop19h 20mMultiple Airlines

mié. 7/2312:20 pmOPO - IAD

1 stop32h 55mMultiple Airlines

Deal found 7/8

$681

mar. 7/159:20 pmIAD - OPO

1 stop13h 10mKLM

mar. 7/226:35 amOPO - IAD

1 stop17h 40mKLM

Deal found 7/10

$734

mié. 7/169:35 amIAD - OPO

1 stop18h 45mAir Canada

jue. 7/2412:10 pmOPO - IAD

2 stops26h 27mAir Canada

Deal found 7/10

$730

dom. 7/209:20 pmIAD - OPO

1 stop19h 15mDelta

mar. 7/296:35 amOPO - IAD

2 stops18h 16mDelta

Deal found 7/9

$643

dom. 7/205:31 pmIAD - OPO

1 stop11h 14mUnited Airlines

lun. 7/289:00 amOPO - IAD

1 stop12h 20mUnited Airlines

Deal found 7/10

$684

dom. 7/204:35 pmIAD - OPO

1 stop18h 20mBritish Airways

dom. 7/279:25 pmOPO - IAD

1 stop27h 45mBritish Airways

Deal found 7/10

$733

mar. 8/54:35 pmIAD - OPO

1 stop18h 20mIberia

lun. 8/188:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 7/9

$685

jue. 8/75:35 pmIAD - OPO

1 stop17h 25mBrussels Airlines

jue. 8/214:25 pmOPO - IAD

1 stop26h 05mBrussels Airlines

Deal found 7/9

$722

lun. 8/188:23 pmIAD - OPO

2 stops14h 07mDelta

mar. 8/266:15 amOPO - IAD

1 stop14h 20mDelta

Deal found 7/10

$636

mar. 8/194:35 pmIAD - OPO

1 stop10h 00mBritish Airways

dom. 8/2412:20 pmOPO - IAD

1 stop31h 40mBritish Airways

Deal found 7/9

$659

jue. 8/215:53 pmIAD - OPO

1 stop10h 52mUnited Airlines

jue. 8/2812:10 pmOPO - IAD

2 stops30h 39mUnited Airlines

Deal found 7/8

$630

One-way flights from Dulles Intl to Porto
Search for one-way flight options from Dulles Intl to Porto. Find affordable one-way fares based on user searches. Data last updated julio 11, 2025.

mar. 8/125:00 pmIAD - OPO

2 stops22h 20mMultiple Airlines

Deal found 7/10

$250

lun. 8/1810:20 pmIAD - OPO

1 stop19h 35mTAP AIR PORTUGAL

Deal found 7/9

$258

mié. 9/38:16 amIAD - OPO

2 stops20h 04mAir Canada

Deal found 7/9

$354

mar. 9/95:53 pmIAD - OPO

1 stop10h 52mUnited Airlines

Deal found 7/10

$359

dom. 11/166:20 pmIAD - OPO

2 stops20h 40mIberia

Deal found 7/9

$377

dom. 11/166:50 pmIAD - OPO

1 stop11h 00mAir France

Deal found 7/9

$379

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

dom. 9/21

6:10 pm-3:40 pm

1 stop16h 30m

Porto

jue. 10/9

6:15 am-3:50 pm

2 stops14h 35m

$625

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

vie. 8/22

10:20 pm-7:00 pm

1 stop15h 40m

Porto

vie. 8/29

8:50 am-3:20 pm

1 stop11h 30m

$629

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

jue. 8/21

5:53 pm-9:45 am

1 stop10h 52m

Porto

jue. 8/28

12:10 pm-11:55 am

2 stops28h 45m

$630

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

jue. 8/28

5:50 pm-4:05 pm

2 stops17h 15m

Porto

lun. 9/1

10:00 pm-8:50 pm

2 stops27h 50m

$631

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

lun. 9/22

8:17 pm-3:30 pm

2 stops14h 13m

Porto

mié. 10/8

8:10 pm-3:35 pm

1 stop24h 25m

$636

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

dom. 7/20

9:20 pm-9:35 pm

1 stop19h 15m

Porto

mar. 7/29

6:35 am-7:51 pm

2 stops18h 16m

$643

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 9/23

8:45 pm-7:45 am

1 stop30h 00m

Porto

mié. 10/8

7:50 pm-4:15 pm

2 stops25h 25m

$644

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

jue. 9/25

4:35 pm-7:35 am

1 stop10h 00m

Porto

jue. 10/9

8:15 am-3:00 pm

1 stop11h 45m

$654

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 8/19

4:35 pm-7:35 am

1 stop10h 00m

Porto

dom. 8/24

12:20 pm-3:00 pm

1 stop31h 40m

$659

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

dom. 9/21

5:13 pm-9:35 am

2 stops35h 22m

Porto

vie. 10/10

11:05 am-11:13 am

2 stops29h 08m

$666

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 16 results

Best time to book a flight from Dulles Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Porto

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Porto?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Porto, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Porto?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Porto (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Porto in June is currently the most expensive (average of $1,032). 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 IAD to OPO?

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Porto in the morning. Doing so could potentially save you 23% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Porto?

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta, KLM, and Air France from Washington, D.C. Dulles Intl Airport to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,951 reviews

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,467 reviews

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,655 reviews

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,846 reviews

Delta

8.0

Very good

7,951 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Porto from Washington, D.C. Dulles Intl?
Located just 6.8 mi from the city center, Porto is the airport most travelers will use when flying to Porto from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Porto (OPO) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 8 different airlines.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Porto round-trip?
Currently priced at $625, Lufthansa will fly you from Washington, D.C. Dulles Intl Airport to Porto and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and United Airlines - these airlines can fly you to your destination from $629 and $630, respectively. These flights start at 12% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Porto one-way?
$258 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 $354 and $359, respectively.
Can I find deals for flights from Dulles Intl to Porto that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Porto.
Can I find deals for business class flights from Dulles Intl to Porto?
Yes. Cheapflights offers flight deals from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Porto?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Porto (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Porto in June is currently the most expensive (average of $1,032). 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 Dulles Intl to Porto

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Other flights to Porto

Top 8 airlines flying from Dulles Intl to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$418	Average$820	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$430	Average$690	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$460	Average$758	FlexibilityNo cancel fee	On-timeN/A
Iberia	Cheapest$515	Average$736	FlexibilityNo cancel fee	On-time77%
SWISS	Cheapest$542	Average$666	FlexibilityNo cancel fee	On-time79%
United Airlines	Cheapest$543	Average$795	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$573	Average$736	FlexibilityNo cancel fee	On-time71%
Lufthansa	Cheapest$603	Average$696	FlexibilityNo cancel fee	On-time76%

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$250+ Cheap flights from Dulles Intl (IAD) 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Porto are usually found in February or October, booked 58 days in advance, depart on a Sunday or Saturday and return on a Monday

Cheap flight deals from Dulles Intl to Porto

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Porto

Cheapest flights from Dulles Intl to PortoExplore the most affordable flight options available from Dulles Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Explore the most affordable flight options available from Dulles Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Porto that are best for you.

Best time to book a flight from Dulles Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Porto

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Porto. Price data was last updated on June 27, 2025.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Porto?

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

Find hourly flight availability from Dulles Intl 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 julio 11, 2025.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Porto?

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 julio 11, 2025.

Get a feel of what it's like to fly with Delta, KLM, and Air France from Washington, D.C. Dulles Intl Airport to Porto by reading reviews from past customers. Users have also rated airlines 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 Dulles Intl 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 Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Porto round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Porto one-way?

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Alternative routes for Dulles Intl to Porto

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Top 8 airlines flying from Dulles Intl to Porto

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Cheapest flights from Dulles Intl to Porto
Explore the most affordable flight options available from Dulles Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.