What are the cheapest flights from Portsmouth to State of Washington?

Looking for the cheapest flight from Portsmouth to State of Washington? While on average our users pay £1,371, our data indicates the cheapest price to be £473. The most popular route (Southampton Eastleigh - Seattle/Tacoma Intl), is priced around £600.

What are the most reliable airlines from Portsmouth to State of Washington?

Consider Singapore Airlines (94%), Aeromexico (92%) or KLM (91%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to State of Washington.

What are the most popular airlines that fly from Portsmouth to State of Washington?

Air Canada, Air France and Finnair are the most popular airlines when flying from Portsmouth to State of Washington.

How far in advance should I book a flight from Portsmouth to State of Washington?

To save up to 40% on this flight, we recommend booking at least 44 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portsmouth to State of Washington from £575 1-2 weeks out and tickets from £773 for flights departing within the next 72 hours.

What is the cheapest month to fly from Portsmouth to State of Washington?

The best pricing can be found in the month of January. Prices to State of Washington from Portsmouth average £572. You can even find prices in January for less than £572, as users have found deals to State of Washington from as low as £326. The month of August appears to be one of the more expensive times to travel to State of Washington from Portsmouth. Flying in the targeted month can save you up to 33%.

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

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

How can I find direct flights from Portsmouth to Washington?

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

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

Yes. Cheapflights offers flight deals from Portsmouth to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£454+ Flights from Portsmouth to Washington

Cheap flight deals from Portsmouth to Washington

Round-trip from	£532
One-way from	£454
Popular in	August
Cheapest in	January
Average price	£529

KLM
15/5-19/5
2 total stops
40h 58m total
Portsmouth to Washington

Search Deals

Aer Lingus
7/9
1 total stop
29h 50m total
Portsmouth to Washington

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£81 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Portsmouth to Washington

Cheapest flights from Portsmouth to Washington
Explore the most affordable flight options available from Portsmouth to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Thu 15/517:35SOU - SEA

1 stop26h 05mKLM

Mon 19/518:07SEA - SOU

1 stop14h 53mKLM

Deal found 30/4£532

Thu 15/509:20SOU - SEA

2 stops19h 30mDelta

Mon 19/507:16SEA - SOU

2 stops17h 34mDelta

Deal found 29/4£600

Tue 3/609:20SOU - SEA

2 stops21h 23mVirgin Atlantic

Tue 10/607:50SEA - SOU

2 stops16h 55mVirgin Atlantic

Deal found 29/4£647

Thu 15/509:40SOU - SEA

2 stops19h 00mMultiple Airlines

Mon 19/515:45SEA - SOU

3 stops33h 00mMultiple Airlines

Deal found 29/4£783

Sat 14/609:40SOU - SEA

1 stop16h 10mAer Lingus

Fri 20/600:05SEA - SOU

2 stops24h 30mAer Lingus

Deal found 29/4£873

Best flights from Portsmouth to Washington
Discover carefully curated flight deals from Portsmouth to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Thu 15/517:35SOU - SEA

1 stop26h 05mKLM

Mon 19/518:07SEA - SOU

1 stop14h 53mKLM

Deal found 30/4£532

Thu 15/509:20SOU - SEA

2 stops19h 30mDelta

Mon 19/507:16SEA - SOU

2 stops17h 34mDelta

Deal found 29/4£600

Tue 3/609:20SOU - SEA

2 stops21h 23mVirgin Atlantic

Tue 10/607:50SEA - SOU

2 stops16h 55mVirgin Atlantic

Deal found 29/4£647

Thu 15/509:40SOU - SEA

2 stops19h 00mMultiple Airlines

Mon 19/515:45SEA - SOU

3 stops33h 00mMultiple Airlines

Deal found 29/4£783

Sat 14/609:40SOU - SEA

1 stop16h 10mAer Lingus

Fri 20/600:05SEA - SOU

2 stops24h 30mAer Lingus

Deal found 29/4£873

Last-minute flights from Portsmouth to Washington
Discover last-minute flight deals from Portsmouth to Washington. Data last updated 30 April 2025 and is based on user searches.

Sat 10/509:20SOU - SEA

2 stops18h 35mKLM

Tue 13/507:16SEA - SOU

2 stops17h 29mKLM

Deal found 28/4£605

Thu 15/517:35SOU - SEA

1 stop26h 05mKLM

Mon 19/518:07SEA - SOU

1 stop14h 53mKLM

Deal found 30/4£532

Thu 15/509:20SOU - SEA

2 stops19h 30mDelta

Mon 19/507:16SEA - SOU

2 stops17h 34mDelta

Deal found 29/4£600

Thu 15/509:40SOU - SEA

2 stops19h 00mMultiple Airlines

Mon 19/515:45SEA - SOU

3 stops33h 00mMultiple Airlines

Deal found 29/4£783

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 15/5

17:35-11:40

1 stop26h 05m

Seattle/Tacoma Intl

Mon 19/5

18:07-17:00

1 stop14h 53m

£532

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 15/5

09:20-20:50

2 stops19h 30m

Seattle/Tacoma Intl

Mon 19/5

07:16-08:50

2 stops17h 34m

£600

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 3/6

09:20-22:43

2 stops21h 23m

Seattle/Tacoma Intl

Tue 10/6

07:50-08:45

2 stops16h 55m

£647

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 15/5

09:40-20:40

2 stops19h 00m

Seattle/Tacoma Intl

Mon 19/5

15:45-08:45

3 stops33h 00m

£783

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sat 14/6

09:40-17:50

1 stop16h 10m

Seattle/Tacoma Intl

Fri 20/6

00:05-08:35

2 stops24h 30m

£873

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Sun 7/9

20:00-17:50

1 stop29h 50m

£454

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Best time to book a flight from Portsmouth to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Portsmouth with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Washington

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to State of Washington (average of £622). Flying from Portsmouth to State of Washington in July is currently the most expensive (average of £946). 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 P0R to WA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to State of Washington as you normally would.

Weekly flight availability from Portsmouth to State of Washington

The most flights from P0R to USWA are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Washington by month

In terms of precipitation, rainfall in State of Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.

Temperature in Washington by month

If weather is an important factor for your trip to State of Washington, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Washington

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.4

Good

643 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus

7.0

Good

1,076 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the most reliable airlines from Portsmouth to State of Washington?
Consider Singapore Airlines (94%), Aeromexico (92%) or KLM (91%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to State of Washington.
What are the cheapest flights from Portsmouth to State of Washington?
Looking for the cheapest flight from Portsmouth to State of Washington? While on average our users pay £1,371, our data indicates the cheapest price to be £473. The most popular route (Southampton Eastleigh - Seattle/Tacoma Intl), is priced around £600.
Can I find deals for flights from Portsmouth to Washington that include hotel bookings?
Yes. In addition to deals on Portsmouth to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Washington.
Can I find deals for business class flights from Portsmouth to Washington?
Yes. Cheapflights offers flight deals from Portsmouth to Washington 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 Portsmouth to State of Washington?
Currently, January is the cheapest month in which you can book a flight from Portsmouth to State of Washington (average of £622). Flying from Portsmouth to State of Washington in July is currently the most expensive (average of £946). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portsmouth to Washington

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Complete your trip

State of Washington car hire

Seattle/Tacoma Intl Airport car hire

Spokane Airport car hire

Wenatchee Pangborn Field Airport car hire

Pasco Tri Cities Airport car hire

Bellingham Airport car hire

Pullman Moscow Regional Airport car hire

Yakima Air Terminal Airport car hire

Walla Walla Airport car hire

Kenmore Air Harbor Airport car hire

Seattle car hire

Bellingham car hire

Direct flights to United States

Top 10 airlines flying from Portsmouth to Washington

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£8	Average£672	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£326	Average£507	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£386	Average£574	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Lufthansa	Cheapest£396	Average£572	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£399	Average£609	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£407	Average£618	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£415	Average£568	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£433	Average£1,015	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Delta	Cheapest£445	Average£828	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Virgin Atlantic	Cheapest£450	Average£719	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portsmouth to Washington?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington from Portsmouth today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Washington?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portsmouth to Washington.

Can Cheapflights find flights from Portsmouth to Washington with no change fees?

Yes, we can. To see specific flights from Portsmouth to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portsmouth to Washington become cheaper?

Of course! You can now track prices for flights from Portsmouth to Washington and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Portsmouth to Washington from £454

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Washington

Keep the following information in mind while searching for Portsmouth to Washington flight deals. Data was last updated 30 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to Washington

Cheapest flights from Portsmouth to WashingtonExplore the most affordable flight options available from Portsmouth to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Explore the most affordable flight options available from Portsmouth to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Washington that are best for you.

Best time to book a flight from Portsmouth to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Portsmouth with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Washington

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

What is the cheapest time of day to fly from P0R to WA?

Find hourly flight availability from Portsmouth to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Weekly flight availability from Portsmouth to State of Washington

Explore weekly flight availability from Portsmouth to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 30 April 2025.

Rainfall in Washington by month

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

Temperature in Washington by month

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

Reviews of airlines servicing Washington

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the most reliable airlines from Portsmouth to State of Washington?

What are the cheapest flights from Portsmouth to State of Washington?

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

How can I find direct flights from Portsmouth to Washington?

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

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

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 Portsmouth to Washington

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Washington

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How does Cheapflights help users find flights from Portsmouth to Washington?

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Washington?

Can Cheapflights find flights from Portsmouth to Washington with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Washington become cheaper?

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Cheapest flights from Portsmouth to Washington
Explore the most affordable flight options available from Portsmouth to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.