HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Dulles Intl (IAD) to Porto (OPO) from $422

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IAD — OPO
May 2 — May 91
From?
To?
Thu 5/2
Thu 5/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

The best prices from Washington, D.C. Dulles Intl to Porto are usually found in January or February, booked 11 days in advance, depart on a Sunday or Saturday and return on a Tuesday

Cheap flight deals from Dulles Intl to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 27, 2024.

Popular in

July

Cheapest in

January

Round-trip from

$523

One-way from

$515
High demand for flights, 36% potential price rise
Search Deals
Best time to find cheap flights, 35% potential price drop
Search Deals
From Washington, D.C. Dulles Intl to Porto
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Porto
Search Deals

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

Flying to your destination on a Tuesday 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.

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 36 days in advance, which can save you up to 4% on flights from Washington, D.C. Dulles Intl Airport to Porto compared to booking the week you need them. Waiting 36 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 $501. For sooner than that we have options available in the next 3 days from $501.

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

January is one of the best times of the year to fly to Porto from Washington, D.C. Dulles Intl Airport. Prices for January average $638 per person but you can even find prices for as low as $175. The most expensive prices can be found in the month of July. Opting for a January flight can save you 34% on your journey compared to booking in July

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Porto (IAD - OPO)?

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Porto at noon. Doing so could potentially save you 42% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap Air France flights from Dulles Intl to Porto

Explore cheap flight options specifically provided by Air France for the route between Dulles Intl and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 27, 2024.
Peruse some of the lowest-priced Air France flights we've found from Washington, D.C. to Porto. Deals update often to give you more flight options matching your criteria
Wed 10/21:15 pmIAD - OPO
2 stops21h 15mAir France
Mon 10/144:20 pmOPO - IAD
1 stop28h 50mAir France
Deal found 4/26$672
Thu 8/86:25 pmIAD - OPO
1 stop16h 05mAir France
Tue 8/139:15 amOPO - IAD
1 stop11h 55mAir France
Deal found 4/26$687
Tue 5/149:20 pmIAD - OPO
1 stop13h 10mAir France
Wed 5/224:20 pmOPO - IAD
2 stops30h 01mAir France
Deal found 4/26$721
Fri 10/41:15 pmIAD - OPO
2 stops38h 10mAir France
Tue 10/84:20 pmOPO - IAD
2 stops53h 10mAir France
Deal found 4/26$729
Tue 5/149:20 pmIAD - OPO
1 stop13h 10mAir France
Sun 5/269:15 amOPO - IAD
1 stop11h 55mAir France
Deal found 4/26$789
Wed 5/19:20 pmIAD - OPO
1 stop13h 10mAir France
Wed 6/59:15 amOPO - IAD
2 stops16h 18mAir France
Deal found 4/26$795
Sun 5/269:20 pmIAD - OPO
1 stop13h 10mAir France
Sun 6/99:15 amOPO - IAD
2 stops17h 12mAir France
Deal found 4/26$832
Thu 5/25:05 pmIAD - OPO
2 stops41h 25mAir France
Mon 5/134:20 pmOPO - IAD
2 stops30h 01mAir France
Deal found 4/26$916
Fri 5/39:20 pmIAD - OPO
1 stop13h 10mAir France
Fri 5/319:15 amOPO - IAD
1 stop11h 55mAir France
Deal found 4/26$974

Cheap TAP AIR PORTUGAL flights from Dulles Intl to Porto

Explore cheap flight options specifically provided by TAP AIR PORTUGAL for the route between Dulles Intl and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 27, 2024.
Some of the best deals we've found on TAP AIR PORTUGAL flights traveling from Washington, D.C. to Porto. Deals frequently update to provide users with more options.
Mon 10/75:35 pmIAD - OPO
1 stop10h 25mTAP AIR PORTUGAL
Wed 10/237:00 amOPO - IAD
1 stop13h 15mTAP AIR PORTUGAL
Deal found 4/26$521
Wed 10/210:20 pmIAD - OPO
1 stop19h 10mTAP AIR PORTUGAL
Mon 10/148:55 amOPO - IAD
1 stop11h 20mTAP AIR PORTUGAL
Deal found 4/26$551
Fri 10/410:15 pmIAD - OPO
1 stop19h 20mTAP AIR PORTUGAL
Tue 10/810:55 pmOPO - IAD
1 stop21h 20mTAP AIR PORTUGAL
Deal found 4/26$579
Wed 9/2510:20 pmIAD - OPO
1 stop19h 10mTAP AIR PORTUGAL
Sun 9/2910:55 pmOPO - IAD
1 stop21h 20mTAP AIR PORTUGAL
Deal found 4/26$606
Thu 5/25:20 pmIAD - OPO
1 stop12h 45mTAP AIR PORTUGAL
Tue 5/710:10 pmOPO - IAD
1 stop27h 10mTAP AIR PORTUGAL
Deal found 4/26$633
Mon 9/210:25 pmIAD - OPO
1 stop17h 05mTAP AIR PORTUGAL
Mon 9/1610:55 pmOPO - IAD
1 stop21h 25mTAP AIR PORTUGAL
Deal found 4/26$641
Sun 9/110:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Wed 9/119:00 amOPO - IAD
1 stop11h 15mTAP AIR PORTUGAL
Deal found 4/26$643
Thu 5/25:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Thu 5/308:55 amOPO - IAD
1 stop11h 25mTAP AIR PORTUGAL
Deal found 4/26$655
Thu 5/25:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Wed 6/57:00 amOPO - IAD
1 stop13h 15mTAP AIR PORTUGAL
Deal found 4/26$682

Cheap Dulles Intl to Porto flights in April & May 2024

Find cheap flight options from Dulles Intl to Porto specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,068,117 searches. Prices were last updated on April 27, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Porto in April and May 2024. For more flight deals, be sure to check back very soon.
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Tue 5/712:15 pmOPO - IAD
1 stop33h 00mSWISS
Deal found 4/26$566
Wed 5/15:50 pmIAD - OPO
1 stop11h 50mKLM
Mon 5/65:00 amOPO - IAD
1 stop15h 35mKLM
Deal found 4/26$567
Wed 5/15:50 pmIAD - OPO
1 stop11h 50mKLM
Mon 5/65:00 amOPO - IAD
2 stops17h 03mKLM
Deal found 4/26$577
Thu 5/28:45 pmIAD - OPO
1 stop33h 35mSWISS
Sun 5/57:20 pmOPO - IAD
1 stop25h 55mSWISS
Deal found 4/26$578
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Tue 5/72:35 pmOPO - IAD
2 stops30h 40mSWISS
Deal found 4/26$586
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Wed 5/88:40 amOPO - IAD
1 stop12h 35mSWISS
Deal found 4/26$592
Thu 5/28:45 pmIAD - OPO
1 stop33h 35mSWISS
Sun 5/52:35 pmOPO - IAD
2 stops30h 40mSWISS
Deal found 4/26$598
Thu 5/25:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Wed 5/89:30 pmOPO - IAD
1 stop22h 50mTAP AIR PORTUGAL
Deal found 4/26$606
Fri 5/36:00 pmIAD - OPO
1 stop23h 45mLufthansa
Wed 5/86:15 amOPO - IAD
1 stop18h 10mLufthansa
Deal found 4/26$609

Dulles Intl to Porto 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Porto in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 27, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Porto in April and May 2024. For more flight deals, be sure to check back very soon.
Sat 10/196:50 pmIAD - OPO
1 stop20h 10mPLAY
Sun 10/278:10 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 4/26$422
Mon 11/115:40 pmIAD - OPO
1 stop16h 45mKLM
Mon 11/1811:45 amOPO - IAD
1 stop12h 40mKLM
Deal found 4/26$434
Sat 11/26:40 pmIAD - OPO
1 stop14h 20mKLM
Sat 11/95:00 amOPO - IAD
1 stop15h 45mKLM
Deal found 4/25$517
Mon 10/75:35 pmIAD - OPO
1 stop10h 25mTAP AIR PORTUGAL
Wed 10/237:00 amOPO - IAD
1 stop13h 15mTAP AIR PORTUGAL
Deal found 4/26$521
Mon 11/47:15 pmIAD - OPO
1 stop16h 45mTAP AIR PORTUGAL
Sun 11/104:00 pmOPO - IAD
1 stop26h 00mTAP AIR PORTUGAL
Deal found 4/26$524
Wed 10/210:20 pmIAD - OPO
1 stop19h 10mTAP AIR PORTUGAL
Mon 10/148:55 amOPO - IAD
1 stop11h 20mTAP AIR PORTUGAL
Deal found 4/26$551
Mon 8/196:25 pmIAD - OPO
1 stop16h 05mDelta
Wed 8/286:30 amOPO - IAD
1 stop14h 30mDelta
Deal found 4/26$555
Mon 10/74:55 pmIAD - OPO
2 stops17h 35mDelta
Wed 10/239:15 amOPO - IAD
1 stop14h 55mDelta
Deal found 4/26$557
Mon 8/197:50 pmIAD - OPO
2 stops14h 40mDelta
Wed 8/286:30 amOPO - IAD
1 stop14h 30mDelta
Deal found 4/26$559

Dulles Intl to Porto flights leaving soon

Find last-minute flight options from Dulles Intl to Porto for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 27, 2024.
Book one of these great deals on flights from Washington, D.C. to Porto. It's wise to confirm all flight details are correct before booking.
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Tue 5/712:15 pmOPO - IAD
1 stop33h 00mSWISS
Deal found 4/26$566
Wed 5/15:50 pmIAD - OPO
1 stop11h 50mKLM
Mon 5/65:00 amOPO - IAD
1 stop15h 35mKLM
Deal found 4/26$567
Wed 5/15:50 pmIAD - OPO
1 stop11h 50mKLM
Mon 5/65:00 amOPO - IAD
2 stops17h 03mKLM
Deal found 4/26$577
Thu 5/28:45 pmIAD - OPO
1 stop33h 35mSWISS
Sun 5/57:20 pmOPO - IAD
1 stop25h 55mSWISS
Deal found 4/26$578
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Tue 5/72:35 pmOPO - IAD
2 stops30h 40mSWISS
Deal found 4/26$586
Thu 5/28:45 pmIAD - OPO
1 stop16h 45mSWISS
Wed 5/88:40 amOPO - IAD
1 stop12h 35mSWISS
Deal found 4/26$592
Thu 5/28:45 pmIAD - OPO
1 stop33h 35mSWISS
Sun 5/52:35 pmOPO - IAD
2 stops30h 40mSWISS
Deal found 4/26$598
Thu 5/25:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Wed 5/89:30 pmOPO - IAD
1 stop22h 50mTAP AIR PORTUGAL
Deal found 4/26$606
Fri 5/36:00 pmIAD - OPO
1 stop23h 45mLufthansa
Wed 5/86:15 amOPO - IAD
1 stop18h 10mLufthansa
Deal found 4/26$609

One-way flights to Porto from Dulles Intl

Search for one-way flight options from Dulles Intl to Porto. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 27, 2024.
Users in need of a one-way flight from Washington, D.C. to Porto can choose from these deals. Those seeking round-trip flights from Washington, D.C. to Porto should utilize the search form at the the top of the page.
Fri 5/105:20 pmIAD - OPO
2 stops33h 30mMultiple Airlines
Deal found 4/26$512
Mon 5/610:25 pmIAD - OPO
1 stop15h 20mTAP AIR PORTUGAL
Deal found 4/26$515
Sat 6/152:50 pmIAD - OPO
2 stops24h 40mMultiple Airlines
Deal found 4/26$518
Tue 6/181:00 pmIAD - OPO
2 stops21h 00mMultiple Airlines
Deal found 4/26$519
Sat 5/119:55 amIAD - OPO
2 stops20h 35mAir Canada
Deal found 4/26$529
Tue 4/305:15 pmIAD - OPO
1 stop35h 10mMultiple Airlines
Deal found 4/26$533
Mon 6/176:50 pmIAD - OPO
3 stops24h 30mMultiple Airlines
Deal found 4/26$534
Tue 5/218:45 pmIAD - OPO
3 stops31h 10mMultiple Airlines
Deal found 4/26$536
Sun 7/217:13 pmIAD - OPO
2 stops15h 17mDelta
Deal found 4/26$539

Find flights from Dulles Intl to Porto within your budget

Customize your flight search to find flights from Dulles Intl 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 3,068,117 searches. Data last updated April 27, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$422 - $672

Route

Depart

Return

Price

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 10/19

1 stop20h 10m

Porto

Sun 10/27

1 stop25h 45m

$422

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 10/7

1 stop10h 25m

Porto

Wed 10/23

1 stop13h 15m

$521

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 8/19

1 stop16h 05m

Porto

Wed 8/28

1 stop14h 30m

$555

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 9/27

2 stops27h 50m

Porto

Sat 10/5

1 stop11h 55m

$565

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 9/28

1 stop21h 25m

Porto

Fri 10/4

1 stop14h 05m

$567

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 8/20

2 stops15h 35m

Porto

Thu 8/29

1 stop12h 35m

$630

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sat 6/8

2 stops16h 25m

Porto

Fri 6/14

2 stops15h 30m

$636

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 10/7

2 stops19h 30m

Porto

Wed 10/23

2 stops14h 50m

$664

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 10/2

2 stops21h 15m

Porto

Mon 10/14

1 stop28h 50m

$672

Flights are sorted by cheapest first

Deals found on 4/26

When is the best time to 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 January 28, 2024.
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 11 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.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Porto. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Porto flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Porto by month

Plan your trip from Dulles Intl to Porto by taking into account the cheapest months to travel. The average price of a one-way flight from Dulles Intl to Porto is currently $526 while a round-trip flight costs $581. Price data was last updated on April 21, 2024.

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.

January

$523

February

$581

March

$599

April

$742

May

$888

June

$1,027

July

$980

August

$869

September

$760

October

$694

November

$554

December

$643

Temperature and rainfall in Porto by month

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

OPO

Temperature

48.2 - 68 °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 April 27, 2024.
To help decide which airline to fly from Washington, D.C. to Porto, see what other customers have to say about Air France, TAP AIR PORTUGAL and Iberia. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,966 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,626 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

SWISS
7.8
Good
2,061 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Air France
7.6
Good
1,809 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Turkish Airlines
7.5
Good
3,695 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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?

    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 11 different airlines.

  • Can I find flights from Washington, D.C. Dulles Intl Airport to Porto for under $500 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Porto for under $500. The cheapest flight booked recently is on PLAY for just $422, but on average you can expect to pay $578.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Porto for under $600?

    There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Porto within the next 7 days for less than $600.

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

    Currently priced at $422, PLAY will fly you from Washington, D.C. Dulles Intl Airport to Porto and back. In addition to PLAY, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and Delta - these airlines can fly you to your destination from $521 and $555, respectively. These flights start at 36% 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?

    $515 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 Delta, with prices starting from $529 and $539, respectively.

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

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

  • What does IAD to OPO mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Washington, D.C. Dulles Intl Airport to Porto Airport flight would often be abbreviated as a IAD to OPO flight.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Porto?

    Flights departing from Washington, D.C. Dulles Intl Airport and landing in Porto layover in Lisbon most frequently.

  • What are some popular things to do or see while on a layover in Lisbon?

    Most Lisbon visitors opt to spend their time experiencing Chiado, Praça do Príncipe Real, and Praça de D. Pedro IV. Travelers on a layover in Lisbon can visit Chiado, Praça do Príncipe Real, and Praça de D. Pedro IV, by traveling 4.5 mi, 4.2 mi, and 4.3 mi, respectively after landing at Lisbon Humberto Delgado. Travelers can book a car rental at Lisbon Humberto Delgado for about $27 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Porto flights?

    Washington, D.C. Dulles Intl Airport to Porto flights have a layover in Madrid least often.

  • Can I find deals for flights from Dulles Intl to Porto that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Porto flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Dulles Intl to Porto with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Porto flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by 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.

  • Can I find deals for flights from Dulles Intl to Porto that allow pets onboard?

    Many airlines flying from Dulles Intl to Porto offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Dulles Intl to Porto?

    Yes, you can often find last-minute deals on Dulles Intl to Porto flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Dulles Intl Airport to Porto flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Porto flight deals you see on this page were last updated on 4/26.

See more FAQs

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 Dulles Intl to Porto
See prices for flight routes from nearby airports that may be better suited for you.

Dulles Intl to Lisbon flights
Reagan-National to Lisbon flights
Baltimore to Lisbon flights
Reagan-National to Porto flights
Baltimore to Porto flights
Dulles Intl to Ponta Delgada flights
Dulles Intl to Faro flights
Reagan-National to Ponta Delgada flights
Baltimore to Faro flights
Reagan-National to Faro flights
Dulles Intl to Funchal flights
Baltimore to Ponta Delgada flights
Reagan-National to Funchal flights
Dulles Intl to Lajes flights
Baltimore to Funchal flights
Dulles Intl to Horta flights
Dulles Intl to Pico Island flights
Baltimore to Lajes flights
Dulles Intl to Porto Santo flights

Top 10 airlines flying from Dulles Intl to Porto

Discover the top 10 airlines that operate flights from Dulles Intl 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 3,068,117 searches. Data last updated April 27, 2024.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$413Average$476FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Air FranceCheapest$418Average$570FlexibilityNo cancel feeOn-time77%
Search Air France flights
DeltaCheapest$420Average$608FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
LufthansaCheapest$423Average$538FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest$428Average$568FlexibilityNo cancel feeOn-time75%
Search KLM flights
Brussels AirlinesCheapest$432Average$462FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
IberiaCheapest$457Average$673FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest$485Average$1,008FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest$511Average$641FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapest$524Average$936FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Baltimore to Las Vegas flights
Los Angeles to Orlando flights
Chicago to Nashville flights
Los Angeles to Dubai flights
Atlanta to Nashville flights
Los Angeles to Honolulu flights
Seattle to Tokyo flights
Seattle to Sacramento flights
New York to West Palm Beach flights
Baltimore to Orlando flights
Boston to Baltimore flights
Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport flights

Search flights from Dulles Intl to Porto by cabin class

Find flights from Dulles Intl to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Perugia Sant Egidio
Flights to Biarritz Parme
Flights to Argostoli Cephalonia
Flights to Melilla
Flights to Milas–Bodrum
Flights to Girona Costa Brava
Flights to Fez Sais
Flights to Zakynthos Dionsios Salomos
Flights to Bourgas
Flights to Bodø
Flights to Reggio Calabria Tito Menniti
Flights to Bastia Poretta
Flights to Skiathos
Flights to Kalamata
Flights to Batumi
Flights to Menorca/Mahon
Flights to Kristiansand Kjevik
Flights to Champaign University-Willard
Flights to Kagoshima
Flights to Ohrid
Flights to Clermont-Ferrand Aulnat
Flights to Parikia Paros
Flights to Lanzhou Arpt
Flights to Mason City

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Porto?

Cheapflights makes it easy to find Dulles Intl to Porto flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Porto?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to Porto for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dulles Intl to Porto with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dulles Intl to Porto, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Dulles Intl to Porto become cheaper?

Yes! Start tracking prices for Dulles Intl to Porto flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.
View all available airlines