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$296+ Cheap flights from Washington 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OPO
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Washington to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) 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 November 21, 2024.

Find flight deals from Washington to Porto

Cheapest flights from Washington to Porto
Explore the most affordable flight options available from Washington to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSEA - OPO
2 stops33h 15mMultiple Airlines
Wed 12/116:05 amOPO - SEA
2 stops24h 05mMultiple Airlines
Deal found 11/20$755
This Gotogate deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/47:00 pmSEA - OPO
1 stop36h 25mTurkish Airlines
Wed 12/1111:00 amOPO - SEA
1 stop38h 05mTurkish Airlines
Deal found 11/19$800
This lol.travel deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/42:00 pmSEA - OPO
2 stops20h 40mSWISS
Wed 12/117:25 pmOPO - SEA
2 stops35h 21mSWISS
Deal found 11/20$850
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/42:00 pmSEA - OPO
1 stop17h 15mUnited Airlines
Wed 12/116:00 amOPO - SEA
2 stops48h 10mUnited Airlines
Deal found 11/20$871
This Kiwi.com deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:30 pmPDX - OPO
1 stop33h 40mMultiple Airlines
Sun 12/298:50 amOPO - PDX
2 stops41h 32mMultiple Airlines
Deal found 11/20$1,312
This KAYAK deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/136:30 pmPDX - OPO
2 stops29h 10mBritish Airways
Fri 12/208:20 amOPO - PDX
2 stops23h 24mBritish Airways
Deal found 11/20$1,444
This KAYAK deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/243:10 pmSEA - OPO
2 stops23h 15mLufthansa
Tue 1/71:45 pmOPO - SEA
2 stops54h 25mLufthansa
Deal found 11/21$1,480
This FlightHub deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:30 pmPDX - OPO
2 stops17h 30mIberia
Fri 12/278:20 amOPO - PDX
2 stops22h 00mIberia
Deal found 11/20$1,722
This Air Canada deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/137:05 pmPDX - OPO
2 stops36h 05mAir Canada
Fri 12/209:00 amOPO - PDX
3 stops21h 09mAir Canada
Deal found 11/20$1,727
This KLM deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/279:18 amPDX - OPO
2 stops17h 32mKLM
Sat 12/284:10 pmOPO - PDX
1 stop27h 15mKLM
Deal found 11/20$1,752
This Lufthansa deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/249:00 amPDX - OPO
2 stops19h 50mLufthansa
Fri 12/2712:30 pmOPO - PDX
2 stops18h 56mLufthansa
Deal found 11/20$1,760
This KLM deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/262:13 pmSEA - OPO
1 stop36h 17mKLM
Mon 12/306:20 amOPO - SEA
2 stops22h 26mKLM
Deal found 11/20$1,819

Find flights from Washington to Porto within your budget

Customize your flight search to find flights from Washington 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/18

10:35 am-3:15 pm

2 stops20h 40m

Porto

Fri 2/28

6:00 am-9:30 pm

2 stops23h 30m

$615

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 1/12

12:35 pm-10:55 am

1 stop14h 20m

Porto

Mon 1/27

11:15 am-11:50 am

1 stop32h 35m

$617

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/18

6:15 am-3:15 pm

3 stops25h 00m

Porto

Thu 2/27

6:00 am-9:30 pm

2 stops47h 30m

$619

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 1/12

3:25 pm-11:15 am

2 stops35h 50m

Porto

Mon 1/27

12:00 pm-9:20 pm

2 stops41h 20m

$630

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 3/5

7:46 am-3:15 pm

3 stops23h 29m

Porto

Wed 3/12

6:00 am-9:00 pm

2 stops22h 00m

$636

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Fri 1/24

1:45 pm-4:00 pm

2 stops18h 15m

Porto

Fri 1/31

8:20 am-11:11 pm

2 stops22h 51m

$670

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 2/13

3:25 pm-11:35 pm

2 stops48h 10m

Porto

Fri 2/21

6:05 am-6:24 pm

2 stops20h 19m

$671

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 2/2

10:16 am-10:55 am

2 stops16h 39m

Porto

Sat 2/8

4:10 pm-11:25 am

1 stop27h 15m

$673

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/18

10:24 am-8:00 pm

2 stops25h 36m

Porto

Thu 2/27

8:20 am-8:35 pm

2 stops20h 15m

$723

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sat 3/1

2:00 pm-10:25 pm

1 stop24h 25m

Porto

Sat 3/15

6:00 am-6:45 pm

2 stops19h 45m

$732

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 29 results
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Best time to book a flight from Washington to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Washington 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.

Travel insights for flights from Washington to Porto

Get recent, data-driven insights about flights from Washington to Porto including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from State of Washington to Porto?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Porto (average of $517). Flying from State of Washington to Porto in June is currently the most expensive (average of $993). 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 WA to OPO?

Find hourly flight availability from Washington to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

When flying from State of Washington to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Porto by month

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

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.

Temperature in Porto by month

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

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).

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 November 21, 2024.
See what other customers who have flown with Air Canada, KLM and United Airlines from Washington to Porto have to say. 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.
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,759 reviews
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,637 reviews
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,525 reviews
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,173 reviews
Delta
8.0
Very good
8,759 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Porto (OPO) is the airport you will fly into if you book a flight from Washington to Porto. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.

  • What are the cheapest airlines to fly from State of Washington to Porto one-way?

    For one-way options, check prices for KLM. According to our data, you can fly for as low as $514. Users have also found prices from $542 and $656 on Scandinavian Airlines and United Airlines, respectively.

  • Can I find deals for flights from Washington to Porto that include hotel bookings?

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

  • How can I find direct flights from Washington to Porto?

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Porto?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Porto (average of $517). Flying from State of Washington to Porto in June is currently the most expensive (average of $993). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington to Porto

Discover the top 6 airlines that operate flights from Washington 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$544Average$771FlexibilityNo cancel feeOn-time71%
DeltaCheapest$635Average$1,093FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$753Average$1,133FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$759Average$967FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$769Average$1,209FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$851Average$1,326FlexibilityNo cancel feeOn-time69%
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