Cheap flights from Porto (OPO) to Dulles Intl (IAD) from $308

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 10/27. 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.
OPO — IAD
May 21 — May 281

Cheap flight deals from Porto to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Dulles Intl (IAD). 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 16, 2024.

Popular in

July

Cheapest in

January

Average price

$759

Round-trip from

$235
High demand for flights, 33% potential price rise
Best time to find cheap flights, 26% potential price drop
Average for round-trip flights in May 2024
From Porto to Washington, D.C. Dulles Intl

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

Flying to your destination on a Tuesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C. Dulles Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

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

Travelers have found it’s best to book a flight 45 days in advance to save up to 9% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Porto to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $539, or $768 for flights within the next 24 hours.

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

The best pricing can be found in the month of April. Prices to Washington, D.C. Dulles Intl Airport from Porto average $668. You can even find prices in April for less than $668, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $470. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Porto. Flying in the targeted month can save you up to 55%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Washington, D.C. Dulles Intl Airport as you normally would.

Cheap SWISS flights from Porto to Dulles Intl

Explore cheap flight options specifically provided by SWISS for the route between Porto and Dulles Intl. 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 2,637,452 searches. Data last updated May 16, 2024.
Find some of the cheapest SWISS flights traveling from Porto to Washington, D.C.. Come back soon if you're not finding the exact deal you're looking for.
Fri 9/208:40 amOPO - IAD
1 stop12h 35mSWISS
Sun 10/610:25 pmIAD - OPO
2 stops38h 00mSWISS
Deal found 5/15$570
Sat 6/87:20 pmOPO - IAD
1 stop25h 55mSWISS
Sun 6/168:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/14$573
Sat 9/288:40 amOPO - IAD
2 stops34h 35mSWISS
Sun 10/205:45 pmIAD - OPO
1 stop19h 30mSWISS
Deal found 5/15$622
Sat 9/288:40 amOPO - IAD
2 stops34h 35mSWISS
Sun 10/2010:25 pmIAD - OPO
2 stops52h 30mSWISS
Deal found 5/15$625
Sat 5/258:40 amOPO - IAD
1 stop12h 35mSWISS
Thu 1/165:50 pmIAD - OPO
2 stops19h 50mSWISS
Deal found 5/16$659
Sat 6/87:20 pmOPO - IAD
2 stops23h 55mSWISS
Sun 6/165:45 pmIAD - OPO
1 stop33h 10mSWISS
Deal found 5/14$705
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/15$758
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/16$777
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/55:45 pmIAD - OPO
2 stops33h 10mSWISS
Deal found 5/15$836

Cheap British Airways flights from Porto to Dulles Intl

Explore cheap flight options specifically provided by British Airways for the route between Porto and Dulles Intl. 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 2,637,452 searches. Data last updated May 16, 2024.
Take a gander at the lowest prices we've found on British Airways flights from Porto to Washington, D.C.. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Sat 5/2510:35 amOPO - IAD
1 stop14h 55mBritish Airways
Thu 1/1610:00 pmIAD - OPO
1 stop13h 45mBritish Airways
Deal found 5/16$573
Thu 5/2310:15 amOPO - IAD
1 stop15h 15mBritish Airways
Wed 1/155:56 pmIAD - OPO
2 stops17h 09mBritish Airways
Deal found 5/16$576
Sun 6/28:35 pmOPO - IAD
1 stop28h 55mBritish Airways
Wed 6/510:45 pmIAD - OPO
1 stop30h 25mBritish Airways
Deal found 5/16$1,791

Cheap Porto to Dulles Intl flights in May & June 2024

Find cheap flight options from Porto to Dulles Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Listed are some of the best fares we've found on flights departing from Porto to Washington, D.C. in 2024. Check back regularly for other flight deals.
Sat 6/87:20 pmOPO - IAD
1 stop25h 55mSWISS
Sun 6/168:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/14$573
Sat 6/87:20 pmOPO - IAD
2 stops23h 55mSWISS
Sun 6/165:45 pmIAD - OPO
1 stop33h 10mSWISS
Deal found 5/14$705
Sun 6/168:40 amOPO - IAD
1 stop12h 35mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/15$728
Sun 6/1612:55 pmOPO - IAD
1 stop29h 35mBrussels Airlines
Mon 8/56:00 pmIAD - OPO
1 stop13h 05mBrussels Airlines
Deal found 5/16$735
Sun 6/212:55 pmOPO - IAD
1 stop29h 35mMultiple Airlines
Sun 6/95:45 pmIAD - OPO
1 stop33h 10mMultiple Airlines
Deal found 5/15$756
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/15$758
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/16$777
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/55:45 pmIAD - OPO
2 stops33h 10mSWISS
Deal found 5/15$836
Sun 6/162:35 pmOPO - IAD
2 stops30h 40mSWISS
Mon 8/55:45 pmIAD - OPO
2 stops33h 10mSWISS
Deal found 5/16$837

Porto to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Porto and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Listed are some of the best fares we've found on flights departing from Porto to Washington, D.C. in 2024. Check back regularly for other flight deals.
Fri 9/2011:55 amOPO - IAD
1 stop11h 30mTAP AIR PORTUGAL
Sun 10/610:20 pmIAD - OPO
1 stop10h 50mTAP AIR PORTUGAL
Deal found 5/15$499
Fri 9/208:40 amOPO - IAD
1 stop12h 35mSWISS
Sun 10/610:25 pmIAD - OPO
2 stops38h 00mSWISS
Deal found 5/15$570
Sat 6/87:20 pmOPO - IAD
1 stop25h 55mSWISS
Sun 6/168:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/14$573
Sat 9/285:00 pmOPO - IAD
1 stop25h 30mMultiple Airlines
Sun 10/2010:20 pmIAD - OPO
1 stop20h 00mMultiple Airlines
Deal found 5/15$580
Fri 9/207:20 pmOPO - IAD
2 stops47h 55mSWISS
Sun 10/610:25 pmIAD - OPO
2 stops34h 20mSWISS
Deal found 5/15$592
Sat 9/288:40 amOPO - IAD
2 stops34h 35mSWISS
Sun 10/205:45 pmIAD - OPO
1 stop19h 30mSWISS
Deal found 5/15$622
Sat 9/288:40 amOPO - IAD
2 stops34h 35mSWISS
Sun 10/2010:25 pmIAD - OPO
2 stops52h 30mSWISS
Deal found 5/15$625
Sat 6/87:20 pmOPO - IAD
2 stops23h 55mSWISS
Sun 6/165:45 pmIAD - OPO
1 stop33h 10mSWISS
Deal found 5/14$705
Sun 6/168:40 amOPO - IAD
1 stop12h 35mSWISS
Mon 8/58:45 pmIAD - OPO
1 stop30h 10mSWISS
Deal found 5/15$728

Porto to Dulles Intl flights leaving soon

Find last-minute flight options from Porto to Dulles Intl 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 2,637,452 searches. Data last updated May 16, 2024.
Users seeking a last-minute flight from Porto to Washington, D.C. should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.
Thu 5/2312:20 pmOPO - IAD
1 stop11h 55mMultiple Airlines
Tue 1/1410:00 pmIAD - OPO
1 stop13h 45mMultiple Airlines
Deal found 5/16$544
Thu 5/2312:20 pmOPO - IAD
1 stop11h 55mIberia
Fri 1/176:20 pmIAD - OPO
2 stops16h 40mIberia
Deal found 5/16$549
Sat 5/2512:35 pmOPO - IAD
1 stop13h 10mUnited Airlines
Fri 1/176:05 pmIAD - OPO
1 stop12h 30mUnited Airlines
Deal found 5/16$564
Sat 5/2510:35 amOPO - IAD
1 stop14h 55mBritish Airways
Thu 1/1610:00 pmIAD - OPO
1 stop13h 45mBritish Airways
Deal found 5/16$573
Thu 5/2310:15 amOPO - IAD
1 stop15h 15mBritish Airways
Wed 1/155:56 pmIAD - OPO
2 stops17h 09mBritish Airways
Deal found 5/16$576
Thu 5/2312:20 pmOPO - IAD
1 stop11h 55mIberia
Tue 1/146:20 pmIAD - OPO
2 stops16h 40mIberia
Deal found 5/16$614
Sat 5/2512:35 pmOPO - IAD
1 stop13h 10mUnited Airlines
Wed 1/156:05 pmIAD - OPO
1 stop16h 40mUnited Airlines
Deal found 5/16$646
Sat 5/258:40 amOPO - IAD
1 stop12h 35mSWISS
Thu 1/165:50 pmIAD - OPO
2 stops19h 50mSWISS
Deal found 5/16$659
Sun 5/269:15 amOPO - IAD
1 stop11h 55mMultiple Airlines
Tue 1/146:45 pmIAD - OPO
1 stop11h 05mMultiple Airlines
Deal found 5/16$665

One-way flights to Dulles Intl from Porto

Search for one-way flight options from Porto to Dulles Intl. 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 2,637,452 searches. Data last updated May 16, 2024.
Take a look at some of the one-way flights we've detected from Porto to Washington, D.C.. Those needing a return flight from Porto to Washington, D.C. can use the search form above.
Sun 10/278:10 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 5/16$308
Sun 10/2711:00 amOPO - IAD
3 stops34h 55mMultiple Airlines
Deal found 5/16$429
Tue 10/16:30 amOPO - IAD
2 stops16h 10mMultiple Airlines
Deal found 5/15$454
Tue 10/17:00 pmOPO - IAD
1 stop29h 20mRoyal Air Maroc
Deal found 5/15$462
Wed 9/189:00 amOPO - IAD
1 stop11h 15mTAP AIR PORTUGAL
Deal found 5/16$478
Mon 7/228:25 pmOPO - IAD
2 stops26h 15mMultiple Airlines
Deal found 5/15$489
Sat 7/278:55 pmOPO - IAD
1 stop25h 45mPLAY
Deal found 5/16$496
Mon 10/218:35 pmOPO - IAD
2 stops28h 55mIberia
Deal found 5/15$499
Mon 7/228:25 pmOPO - IAD
2 stops26h 15mMultiple Airlines
Deal found 5/16$507

Find flights from Porto to Dulles Intl within your budget

Customize your flight search to find flights from Porto to Dulles Intl 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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$499 - $714

Route

Depart

Return

Price

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Fri 9/20

1 stop11h 30m

Washington, D.C. Dulles Intl

Sun 10/6

1 stop10h 50m

$499

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Tue 5/28

1 stop13h 10m

Washington, D.C. Dulles Intl

Mon 1/13

1 stop16h 40m

$564

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Fri 9/20

1 stop12h 35m

Washington, D.C. Dulles Intl

Sun 10/6

2 stops38h 00m

$570

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Thu 6/13

1 stop16h 00m

Washington, D.C. Dulles Intl

Thu 6/20

1 stop10h 00m

$575

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Sat 9/28

1 stop25h 30m

Washington, D.C. Dulles Intl

Sun 10/20

1 stop20h 00m

$580

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Thu 6/13

2 stops37h 10m

Washington, D.C. Dulles Intl

Thu 6/20

1 stop29h 50m

$592

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Sun 5/26

1 stop14h 55m

Washington, D.C. Dulles Intl

Wed 1/15

1 stop11h 50m

$677

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Sun 5/26

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 1/16

2 stops17h 20m

$687

PortoWashington, D.C. Dulles Intl

OPO - IAD

OPOIAD

Porto

Sun 5/26

1 stop12h 30m

Washington, D.C. Dulles Intl

Sun 1/12

1 stop12h 40m

$714

Flights are sorted by cheapest first

Deals found on 5/15

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

Use this chart to determine the cheapest time to fly round-trip from Porto to Dulles Intl. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Porto to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Dulles Intl by month

Plan your trip from Porto to Dulles Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Porto to Dulles Intl is currently $458 while a round-trip flight costs $606. Price data was last updated on May 12, 2024.

Currently, September is the cheapest month in which you can book a flight from Porto to Washington, D.C. Dulles Intl Airport (average of $280). Flying from Porto to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $397). 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

$308

February

$303

March

$358

April

$337

May

$336

June

$397

July

$376

August

$298

September

$280

October

$303

November

$328

December

$293

Temperature and rainfall in Dulles Intl by month

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

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated May 16, 2024.
To help decide which airline to fly from Porto to Washington, D.C., see what other customers have to say about SWISS, British Airways and Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

8.0
Very good
10,673 reviews
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.9
Good
1,568 reviews
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.8
Good
1,994 reviews
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.6
Good
1,764 reviews
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.4
Good
10,924 reviews
8.0
Very good
10,673 reviews

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Porto to Dulles Intl. 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 from for flights from Porto to Washington, D.C. Dulles Intl?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to Washington, D.C. Dulles Intl. 2 airlines have flights from Porto to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Porto to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

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

    Yes, there are multiple flights from Porto to Washington, D.C. Dulles Intl Airport for under $500. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $499, but on average you can expect to pay $622.

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

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

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

    TAP AIR PORTUGAL, at $499, was found to be the cheapest airline from Porto to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include United Airlines and SWISS. TAP AIR PORTUGAL is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with PLAY, which is currently one of the cheapest options available, starting at $308. Royal Air Maroc flights start at $462 while deals on TAP AIR PORTUGAL start at $478 one-way.

  • What does OPO to IAD mean?

    OPO stands for Porto Airport, while IAD stands for Washington, D.C. Dulles Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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

    The amount of baggage you can bring on your Porto to Dulles Intl 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 Porto to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to Dulles Intl 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 Porto to Dulles Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to Dulles Intl 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 Porto to Dulles Intl that allow pets onboard?

    Many airlines flying from Porto to Dulles Intl 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 Porto to Dulles Intl?

    Yes, you can often find last-minute deals on Porto to Dulles Intl 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 Porto to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Porto to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 5/16.

See more FAQs

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

Top 2 airlines flying from Porto to Dulles Intl

Discover the top 2 airlines that operate flights from Porto to Dulles Intl. 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$488Average$540FlexibilityNo cancel feeOn-time75%
Search KLM flights
TAP AIR PORTUGALCheapest$501Average$697FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Search flights from Porto to Dulles Intl by cabin class

Find flights from Porto to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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 Porto to Dulles Intl?

Cheapflights helps you search for flights from Porto to Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Porto to Dulles Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Dulles Intl from Porto shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Porto today and book when prices fit your budget.

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