Cheap flights from Dulles Intl (IAD) to Porto (OPO) from $412

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. Click the price to replicate the search for this deal.
IAD — OPO
May 11 — May 181

The best prices from Washington, D.C. Dulles Intl to Porto are usually found in January or February, booked 35 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 May 6, 2024.

Popular in

December

Cheapest in

January

Round-trip from

$523

One-way from

$506
High demand for flights, 30% potential price rise
Best time to find cheap flights, 36% potential price drop
From Washington, D.C. Dulles Intl to Porto
One-way flight from Washington, D.C. Dulles Intl 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 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 14 days in advance, which can save you up to 35% on flights from Washington, D.C. Dulles Intl Airport to Porto compared to booking the week you need them. Waiting 14 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 $430. For sooner than that we have options available in the next 3 days from $604.

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 $618 per person but you can even find prices for as low as $417. The most expensive prices can be found in the month of June. Opting for a January flight can save you 35% on your journey compared to booking in June

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 PLAY flights from Dulles Intl to Porto

Explore cheap flight options specifically provided by PLAY 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 2,689,106 searches. Data last updated May 6, 2024.
Peruse some of the lowest-priced PLAY flights we've found from Washington, D.C. to Porto. Deals update often to give you more flight options matching your criteria
Fri 8/26:50 pmIAD - OPO
1 stop20h 10mPLAY
Sat 8/178:55 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 5/5$674
Mon 7/156:50 pmIAD - OPO
1 stop20h 10mPLAY
Tue 8/68:55 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 5/5$749
Mon 7/226:50 pmIAD - OPO
1 stop20h 10mPLAY
Tue 8/68:55 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 5/5$817
Wed 5/156:50 pmIAD - OPO
1 stop20h 25mPLAY
Sun 5/199:10 pmOPO - IAD
1 stop25h 30mPLAY
Deal found 5/6$826

Cheap KLM flights from Dulles Intl to Porto

Explore cheap flight options specifically provided by KLM 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 2,689,106 searches. Data last updated May 6, 2024.
Some of the best deals we've found on KLM flights traveling from Washington, D.C. to Porto. Deals frequently update to provide users with more options.
Tue 5/145:50 pmIAD - OPO
1 stop11h 50mKLM
Wed 5/225:00 amOPO - IAD
1 stop16h 00mKLM
Deal found 5/6$702
Tue 5/145:50 pmIAD - OPO
1 stop23h 25mKLM
Wed 5/225:00 amOPO - IAD
2 stops16h 17mKLM
Deal found 5/6$712
Thu 6/205:25 pmIAD - OPO
1 stop23h 50mKLM
Fri 9/209:15 amOPO - IAD
1 stop11h 55mKLM
Deal found 5/5$830
Thu 6/65:25 pmIAD - OPO
1 stop23h 50mKLM
Wed 6/129:15 amOPO - IAD
1 stop14h 55mKLM
Deal found 5/6$835

Cheap Dulles Intl to Porto flights in May & June 2024

Find cheap flight options from Dulles Intl to Porto specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,689,106 searches. Prices were last updated on May 6, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Porto in May and June 2024. For more flight deals, be sure to check back very soon.
Tue 5/145:50 pmIAD - OPO
1 stop11h 50mKLM
Wed 5/225:00 amOPO - IAD
1 stop16h 00mKLM
Deal found 5/6$702
Tue 5/145:50 pmIAD - OPO
1 stop23h 25mKLM
Wed 5/225:00 amOPO - IAD
2 stops16h 17mKLM
Deal found 5/6$712
Sun 6/238:45 pmIAD - OPO
1 stop16h 30mSWISS
Wed 9/188:40 amOPO - IAD
1 stop12h 35mSWISS
Deal found 5/5$774
Mon 6/2410:20 pmIAD - OPO
1 stop20h 05mLufthansa
Wed 9/186:15 amOPO - IAD
1 stop18h 10mLufthansa
Deal found 5/5$778
Tue 6/181:08 pmIAD - OPO
2 stops14h 17mDelta
Fri 9/209:15 amOPO - IAD
1 stop11h 55mDelta
Deal found 5/5$787
Tue 6/181:08 pmIAD - OPO
2 stops14h 17mDelta
Mon 9/2311:25 amOPO - IAD
1 stop33h 35mDelta
Deal found 5/5$788
Tue 6/188:45 pmIAD - OPO
1 stop30h 00mSWISS
Tue 9/2412:15 pmOPO - IAD
1 stop33h 00mSWISS
Deal found 5/5$795
Sun 6/235:25 pmIAD - OPO
1 stop12h 15mDelta
Mon 9/2311:25 amOPO - IAD
1 stop33h 35mDelta
Deal found 5/5$796
Tue 6/181:08 pmIAD - OPO
2 stops14h 17mDelta
Thu 9/194:20 pmOPO - IAD
1 stop28h 50mDelta
Deal found 5/5$798

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 2,689,106 searches. Data last updated May 6, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Porto in May and June 2024. For more flight deals, be sure to check back very soon.
Sun 8/185:25 pmIAD - OPO
1 stop23h 50mKLM
Thu 8/296:30 amOPO - IAD
1 stop14h 05mKLM
Deal found 5/5$567
Sat 8/176:25 pmIAD - OPO
1 stop16h 05mDelta
Fri 8/306:30 amOPO - IAD
1 stop14h 05mDelta
Deal found 5/5$569
Thu 10/313:45 pmIAD - OPO
2 stops15h 50mAir Canada
Tue 11/56:00 amOPO - IAD
2 stops33h 32mAir Canada
Deal found 5/5$571
Mon 8/197:50 pmIAD - OPO
2 stops14h 50mDelta
Wed 8/286:30 amOPO - IAD
1 stop14h 30mDelta
Deal found 5/5$572
Wed 9/1810:20 pmIAD - OPO
1 stop20h 00mLufthansa
Thu 10/36:15 amOPO - IAD
1 stop18h 10mLufthansa
Deal found 5/5$577
Tue 8/209:20 pmIAD - OPO
1 stop13h 10mDelta
Thu 8/2911:25 amOPO - IAD
2 stops17h 50mDelta
Deal found 5/5$579
Mon 10/710:45 pmIAD - OPO
2 stops16h 10mIberia
Mon 10/148:35 pmOPO - IAD
2 stops24h 00mIberia
Deal found 5/5$580
Tue 9/245:50 pmIAD - OPO
1 stop23h 25mDelta
Mon 9/3011:25 amOPO - IAD
1 stop33h 35mDelta
Deal found 5/5$581
Tue 9/248:45 pmIAD - OPO
1 stop9h 55mIberia
Sat 10/128:35 pmOPO - IAD
2 stops24h 00mIberia
Deal found 5/5$582

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 2,689,106 searches. Data last updated May 6, 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.
Tue 5/145:50 pmIAD - OPO
1 stop11h 50mKLM
Wed 5/225:00 amOPO - IAD
1 stop16h 00mKLM
Deal found 5/6$702
Tue 5/145:50 pmIAD - OPO
1 stop23h 25mKLM
Wed 5/225:00 amOPO - IAD
2 stops16h 17mKLM
Deal found 5/6$712
Wed 5/156:50 pmIAD - OPO
1 stop20h 25mPLAY
Sun 5/199:10 pmOPO - IAD
1 stop25h 30mPLAY
Deal found 5/6$826
Tue 5/145:50 pmIAD - OPO
1 stop11h 50mKLM
Sun 5/269:15 amOPO - IAD
1 stop14h 55mKLM
Deal found 5/6$835
Tue 5/145:50 pmIAD - OPO
1 stop11h 50mDelta
Sun 5/265:00 amOPO - IAD
2 stops17h 21mDelta
Deal found 5/6$847
Wed 5/154:30 pmIAD - OPO
2 stops21h 50mMultiple Airlines
Sun 5/199:10 pmOPO - IAD
1 stop25h 30mMultiple Airlines
Deal found 5/6$918
Wed 5/1512:35 pmIAD - OPO
3 stops25h 45mMultiple Airlines
Sun 5/199:10 pmOPO - IAD
1 stop25h 30mMultiple Airlines
Deal found 5/6$919
Wed 5/154:30 pmIAD - OPO
2 stops21h 50mMultiple Airlines
Sun 5/199:50 amOPO - IAD
3 stops36h 50mMultiple Airlines
Deal found 5/6$1,015
Tue 5/144:59 pmIAD - OPO
2 stops17h 31mDelta
Wed 5/225:00 amOPO - IAD
2 stops16h 17mDelta
Deal found 5/6$1,104

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 2,689,106 searches. Data last updated May 6, 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.
Sun 6/306:50 pmIAD - OPO
3 stops41h 15mMultiple Airlines
Deal found 5/5$412
Tue 7/26:50 pmIAD - OPO
3 stops32h 10mMultiple Airlines
Deal found 5/5$421
Fri 7/56:50 pmIAD - OPO
1 stop20h 10mPLAY
Deal found 5/5$445
Sun 6/306:50 pmIAD - OPO
2 stops38h 55mMultiple Airlines
Deal found 5/5$446
Wed 7/318:30 pmIAD - OPO
3 stops29h 20mMultiple Airlines
Deal found 5/5$450
Wed 7/315:40 pmIAD - OPO
1 stop22h 30mTAP AIR PORTUGAL
Deal found 5/5$459
Tue 7/26:50 pmIAD - OPO
3 stops32h 10mMultiple Airlines
Deal found 5/5$464
Wed 7/3110:20 pmIAD - OPO
2 stops27h 30mMultiple Airlines
Deal found 5/5$468
Tue 7/26:50 pmIAD - OPO
2 stops23h 05mMultiple Airlines
Deal found 5/5$471

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 2,689,106 searches. Data last updated May 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$674 - $802

Route

Depart

Return

Price

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Fri 8/2

1 stop20h 10m

Porto

Sat 8/17

1 stop25h 45m

$674

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 5/14

1 stop11h 50m

Porto

Wed 5/22

1 stop16h 00m

$702

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 7/14

1 stop13h 10m

Porto

Wed 7/24

1 stop14h 55m

$731

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 7/29

2 stops15h 35m

Porto

Sat 8/24

2 stops18h 25m

$741

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 7/29

1 stop17h 05m

Porto

Sun 8/25

1 stop22h 55m

$752

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 8/1

1 stop27h 30m

Porto

Sat 8/24

2 stops18h 25m

$766

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 6/24

1 stop20h 05m

Porto

Wed 9/18

1 stop18h 10m

$778

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 6/18

2 stops14h 17m

Porto

Fri 9/20

1 stop11h 55m

$787

Washington, D.C. Dulles IntlPorto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 6/24

1 stop13h 05m

Porto

Sat 9/21

1 stop25h 30m

$802

Flights are sorted by cheapest first

Deals found on 5/5

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 May 3, 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 35 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 28, 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 $448 while a round-trip flight costs $748. Price data was last updated on April 28, 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

$883

June

$1,027

July

$985

August

$866

September

$759

October

$698

November

$548

December

$645

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 May 6, 2024.
To help decide which airline to fly from Washington, D.C. to Porto, see what other customers have to say about PLAY, KLM and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.1
Very good
10,818 reviews
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.9
Good
1,602 reviews
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.8
Good
2,013 reviews
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.5
Good
1,783 reviews
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.4
Good
11,090 reviews
8.1
Very good
10,818 reviews

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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 $700 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Porto for under $700. The cheapest flight booked recently is on PLAY for just $674, but on average you can expect to pay $764.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Porto for under $800?

    There are currently 11+ open flights from Washington, D.C. Dulles Intl Airport to Porto within the next 7 days for less than $800.

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

    Currently priced at $674, 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 KLM and Air France - these airlines can fly you to your destination from $702 and $731, respectively. These flights start at 1% 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?

    $445 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on TAP AIR PORTUGAL and Air Canada, with prices starting from $459 and $505, respectively.

  • What are the most popular airlines that fly 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?

  • 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 $25 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?

  • 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 5/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 2,689,106 searches. Data last updated May 6, 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$612FlexibilityNo 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$431Average$462FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
IberiaCheapest$457Average$673FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest$485Average$1,048FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest$510Average$599FlexibilityNo cancel feeOn-time70%
Search British Airways flights
TAP AIR PORTUGALCheapest$535Average$948FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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.

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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.

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