What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to Porto?

Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $689.

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Porto?

Flights via Lisbon (LIS) have the shortest average one-way travel time for 1-stop routes: 10h 20m.

What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Porto?

Frankfurt am Main (FRA) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Porto on Cheapflights.

Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to Porto?

Flights via Lisbon (LIS) offer the fastest connection on this route, with an average layover time of 1h 50m.

How long is the flight from Washington, D.C. Dulles Intl Airport to Porto?

Departing from Washington, D.C. Dulles Intl Airport to Porto will take you 11h 25m. The distance from Washington, D.C. Dulles Intl Airport to Porto is about 3537 mi. This flight may include one or multiple stops.

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

Currently priced at $418, Delta will fly you from Washington, D.C. Dulles Intl Airport to Porto and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and TAP AIR PORTUGAL - these airlines can fly you to your destination from $430 and $469, respectively. These flights start at 43% lower than the current average price 3 months from now.

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 Delta, Iberia or KLM 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 $696 per person but you can even find prices for as low as $423. The most expensive prices can be found in the month of June. Opting for a November flight can save you 30% 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 6 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.

$237+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Porto

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Porto are usually found in February or October, booked 78 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	$538 (Delta)
One-way from	$237 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$694

From Washington, D.C. Dulles Intl to Porto

Search Deals

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

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($29 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in September 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 September 11, 2025.

Sun 11/238:30 pmIAD - OPO

2 stops30h 55mSWISS

Sun 11/306:35 pmOPO - IAD

2 stops51h 05mSWISS

Deal found 9/9

$541

Wed 10/221:00 pmIAD - OPO

2 stops17h 25mAir Canada

Fri 10/316:00 amOPO - IAD

2 stops19h 20mAir Canada

Deal found 9/11

$543

Mon 10/1310:20 pmIAD - OPO

1 stop20h 00mLufthansa

Tue 10/216:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$544

Thu 11/1310:55 pmIAD - OPO

2 stops18h 30mLufthansa

Thu 11/276:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$545

Sun 10/58:30 pmIAD - OPO

3 stops30h 20mMultiple Airlines

Thu 10/910:25 pmOPO - IAD

3 stops28h 45mMultiple Airlines

Deal found 9/10

$548

Tue 10/78:45 pmIAD - OPO

1 stop30h 00mSWISS

Wed 11/57:20 pmOPO - IAD

1 stop26h 20mSWISS

Deal found 9/10

$549

Fri 11/78:30 pmIAD - OPO

1 stop33h 20mSWISS

Sat 11/1512:00 pmOPO - IAD

1 stop33h 40mSWISS

Deal found 9/11

$551

Tue 10/148:45 pmIAD - OPO

1 stop30h 00mMultiple Airlines

Thu 10/236:00 amOPO - IAD

2 stops20h 05mMultiple Airlines

Deal found 9/10

$555

Tue 10/78:45 pmIAD - OPO

1 stop30h 00mSWISS

Mon 11/37:20 pmOPO - IAD

1 stop26h 20mSWISS

Deal found 9/10

$556

Tue 10/149:45 amIAD - OPO

3 stops28h 15mMultiple Airlines

Tue 10/2110:50 pmOPO - IAD

2 stops27h 15mMultiple Airlines

Deal found 9/11

$557

Fri 11/710:55 pmIAD - OPO

2 stops18h 30mLufthansa

Tue 11/111:45 pmOPO - IAD

1 stop35h 20mLufthansa

Deal found 9/11

$562

Tue 10/710:20 pmIAD - OPO

1 stop20h 00mLufthansa

Tue 11/46:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$563

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 September 11, 2025.

Thu 2/126:05 pmIAD - OPO

1 stop11h 25mDelta

Wed 2/186:00 amOPO - IAD

2 stops22h 35mDelta

Deal found 9/10

$538

Tue 10/1410:20 amIAD - OPO

2 stops20h 10mAir Canada

Thu 10/236:00 amOPO - IAD

2 stops20h 05mAir Canada

Deal found 9/11

$543

Wed 11/199:45 amIAD - OPO

2 stops20h 55mUnited Airlines

Sat 12/136:00 amOPO - IAD

2 stops16h 30mUnited Airlines

Deal found 9/11

$548

Tue 10/149:45 amIAD - OPO

3 stops28h 15mMultiple Airlines

Tue 10/2110:50 pmOPO - IAD

2 stops27h 15mMultiple Airlines

Deal found 9/11

$557

Fri 11/710:55 pmIAD - OPO

2 stops18h 30mLufthansa

Sat 11/156:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$584

Thu 10/231:00 pmIAD - OPO

2 stops16h 40mDelta

Tue 11/411:10 amOPO - IAD

1 stop13h 05mDelta

Deal found 9/11

$571

Wed 11/194:25 pmIAD - OPO

2 stops15h 50mAir Canada

Fri 11/286:00 amOPO - IAD

2 stops19h 26mAir Canada

Deal found 9/11

$572

Thu 11/1310:55 pmIAD - OPO

1 stop19h 45mMultiple Airlines

Sun 11/166:00 amOPO - IAD

2 stops19h 26mMultiple Airlines

Deal found 9/11

$579

Fri 10/316:30 amIAD - OPO

2 stops25h 10mUnited Airlines

Tue 11/46:00 amOPO - IAD

2 stops44h 20mUnited Airlines

Deal found 9/11

$598

Tue 10/147:59 pmIAD - OPO

2 stops14h 31mDelta

Thu 10/236:30 amOPO - IAD

2 stops20h 01mDelta

Deal found 9/10

$587

Sun 11/238:45 amIAD - OPO

1 stop19h 45mMultiple Airlines

Sun 11/301:45 pmOPO - IAD

1 stop35h 20mMultiple Airlines

Deal found 9/9

$602

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

Sun 10/58:30 pmIAD - OPO

3 stops30h 20mMultiple Airlines

Thu 10/910:25 pmOPO - IAD

3 stops28h 45mMultiple Airlines

Deal found 9/10

$548

Tue 10/78:45 pmIAD - OPO

1 stop30h 00mSWISS

Wed 11/57:20 pmOPO - IAD

1 stop26h 20mSWISS

Deal found 9/10

$549

Tue 10/78:45 pmIAD - OPO

1 stop30h 00mSWISS

Mon 11/37:20 pmOPO - IAD

1 stop26h 20mSWISS

Deal found 9/10

$556

Tue 10/710:20 pmIAD - OPO

1 stop20h 00mLufthansa

Tue 11/46:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$563

Mon 10/1310:20 pmIAD - OPO

1 stop20h 00mLufthansa

Tue 10/216:00 amOPO - IAD

1 stop14h 50mLufthansa

Deal found 9/10

$544

Tue 10/148:45 pmIAD - OPO

1 stop30h 00mMultiple Airlines

Thu 10/236:00 amOPO - IAD

2 stops20h 05mMultiple Airlines

Deal found 9/10

$555

Tue 10/149:45 amIAD - OPO

3 stops28h 15mMultiple Airlines

Tue 10/2110:50 pmOPO - IAD

2 stops27h 15mMultiple Airlines

Deal found 9/11

$557

Fri 10/1710:20 pmIAD - OPO

2 stops19h 25mMultiple Airlines

Tue 10/211:30 pmOPO - IAD

1 stop30h 05mMultiple Airlines

Deal found 9/9

$569

Mon 10/209:45 amIAD - OPO

3 stops32h 10mMultiple Airlines

Wed 11/54:05 pmOPO - IAD

2 stops29h 35mMultiple Airlines

Deal found 9/10

$565

Wed 10/221:00 pmIAD - OPO

2 stops17h 25mAir Canada

Fri 10/316:00 amOPO - IAD

2 stops19h 20mAir Canada

Deal found 9/11

$543

Fri 10/246:30 pmIAD - OPO

1 stop21h 05mMultiple Airlines

Sun 11/25:00 amOPO - IAD

1 stop16h 05mMultiple Airlines

Deal found 9/10

$564

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 September 11, 2025.

Fri 10/3111:30 pmIAD - OPO

2 stops27h 20mMultiple Airlines

Deal found 9/10

$237

Mon 10/135:45 pmIAD - OPO

2 stops23h 40mMultiple Airlines

Deal found 9/11

$240

Mon 10/610:20 pmIAD - OPO

2 stops27h 30mMultiple Airlines

Deal found 9/11

$247

Thu 10/306:30 pmIAD - OPO

2 stops32h 20mMultiple Airlines

Deal found 9/10

$251

Mon 10/610:20 pmIAD - OPO

1 stop13h 40mTAP AIR PORTUGAL

Deal found 9/10

$256

Sun 11/1610:30 pmIAD - OPO

1 stop13h 30mTAP AIR PORTUGAL

Deal found 9/10

$257

Thu 10/306:30 pmIAD - OPO

1 stop12h 30mTAP AIR PORTUGAL

Deal found 9/10

$258

Wed 10/1510:20 pmIAD - OPO

2 stops18h 45mMultiple Airlines

Deal found 9/11

$259

Tue 11/185:30 pmIAD - OPO

2 stops32h 20mMultiple Airlines

Deal found 9/10

$288

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

Thu 2/12

6:05 pm-10:30 am

1 stop11h 25m

Porto

Wed 2/18

6:00 am-11:35 pm

2 stops22h 35m

$538

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/14

10:20 am-11:30 am

2 stops20h 10m

Porto

Thu 10/23

6:00 am-9:05 pm

2 stops20h 05m

$543

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 11/19

9:45 am-11:40 am

2 stops20h 55m

Porto

Sat 12/13

6:00 am-5:30 pm

2 stops16h 30m

$548

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/14

9:45 am-7:00 pm

3 stops28h 15m

Porto

Tue 10/21

10:50 pm-9:05 pm

2 stops27h 15m

$557

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 10/23

1:00 pm-10:40 am

2 stops16h 40m

Porto

Tue 11/4

11:10 am-7:15 pm

1 stop13h 05m

$571

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 11/19

4:25 pm-1:15 pm

2 stops15h 50m

Porto

Fri 11/28

6:00 am-8:26 pm

2 stops19h 26m

$572

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 11/13

10:55 pm-11:40 pm

1 stop19h 45m

Porto

Sun 11/16

6:00 am-8:26 pm

2 stops19h 26m

$579

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 11/7

10:55 pm-10:25 pm

2 stops18h 30m

Porto

Sat 11/15

6:00 am-3:50 pm

1 stop14h 50m

$584

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 10/14

7:59 pm-3:30 pm

2 stops14h 31m

Porto

Thu 10/23

6:30 am-9:31 pm

2 stops20h 01m

$587

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 10/31

6:30 am-11:40 am

2 stops25h 10m

Porto

Tue 11/4

6:00 am-9:20 pm

2 stops44h 20m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 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

Prices

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 78 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 $1,027). 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.

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta, KLM, and United Airlines 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

7,960 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

7,960 reviews

Delta

8.0

Very good

7,960 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

1,385 reviews

Delta

8.0

Very good

7,960 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

8,937 reviews

Delta

8.0

Very good

7,960 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!

TAP AIR PORTUGAL

7.1

Good

1,977 reviews

Delta

8.0

Very good

7,960 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!

Iberia

7.0

Good

2,929 reviews

Delta

8.0

Very good

7,960 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 6 different airlines.
How long is the flight from Washington, D.C. Dulles Intl Airport to Porto?
Departing from Washington, D.C. Dulles Intl Airport to Porto will take you 11h 25m. The distance from Washington, D.C. Dulles Intl Airport to Porto is about 3537 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Porto round-trip?
Currently priced at $418, Delta will fly you from Washington, D.C. Dulles Intl Airport to Porto and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and TAP AIR PORTUGAL - these airlines can fly you to your destination from $430 and $469, respectively. These flights start at 43% lower than the current average price 3 months from now.
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 $1,027). 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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Coimbra

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Other flights to Porto

Top 6 airlines flying from Dulles Intl to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$418	Average$825	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$430	Average$731	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$469	Average$782	FlexibilityNo cancel fee	On-timeN/A
Iberia	Cheapest$515	Average$672	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$543	Average$791	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$629	Average$693	FlexibilityNo cancel fee	On-time76%

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$237+ 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 10/31. 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 78 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 September 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 September 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?

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?

What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Porto?

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Porto?

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Porto?

Which airport typically offers the quickest layover for flights 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 United Airlines 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?

How long is the flight from Washington, D.C. Dulles Intl Airport to Porto?

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

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

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

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Alternative routes for Dulles Intl to Porto

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Top 6 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 September 11, 2025.