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Cheap flights from Portsmouth to Seattle from £747

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/6. 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.
LHR — SEA
27 May — 3 Jun1
1 adult
Mon 27/5
Mon 3/6

Cheap flight deals from Portsmouth to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Portsmouth (P0R) to Seattle (SEA). 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 22 May 2024.

Round-trip from

£453
From Portsmouth to Seattle/Tacoma Intl
Search Deals

How far in advance should I book a flight from Portsmouth to Seattle?

Travelers have found it’s best to book a flight 44 days in advance to save up to 35% 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 44 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 Portsmouth to Seattle 1-2 weeks in advance for as low as £530, or £727 for flights within the next 24 hours.

What is the cheapest month to fly from Portsmouth to Seattle?

November can be a great time to fly to Seattle from Portsmouth with a flight ticket averaging about £546. Cheapflights users have found deals in the month of November for as cheap as £300. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from Portsmouth to Seattle (P0R - SEA)?

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

Cheap Delta flights from Portsmouth to Seattle

Explore cheap flight options specifically provided by Delta for the route between Portsmouth and Seattle. 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 863,249 searches. Data last updated 22 May 2024.
Take a peek at the cheapest Delta flights we've detected travelling from Portsmouth to Seattle. Make sure to check back often as deals are often changing.
Thu 6/619:40SOU - SEA
1 stop22h 40mDelta
Mon 10/613:30SEA - SOU
1 stop21h 40mDelta
Deal found 22/5£779
Thu 6/607:55SOU - SEA
2 stops22h 29mDelta
Mon 10/613:45SEA - SOU
2 stops21h 25mDelta
Deal found 22/5£799

Cheap British Airways flights from Portsmouth to Seattle

Explore cheap flight options specifically provided by British Airways for the route between Portsmouth and Seattle. 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 863,249 searches. Data last updated 22 May 2024.
Have a look at some of the cheapest available British Airways flights departing from Portsmouth and landing in Seattle. Make sure to examine the flight information before completing your reservation.
Wed 26/616:30SOU - SEA
2 stops27h 00mBritish Airways
Wed 3/719:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£879
Mon 3/619:55SOU - SEA
2 stops23h 40mBritish Airways
Tue 11/619:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£982
Mon 3/609:40SOU - SEA
1 stop15h 21mBritish Airways
Tue 11/619:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£1,021
Mon 3/609:40SOU - SEA
1 stop15h 21mBritish Airways
Tue 11/618:45SEA - SOU
1 stop16h 45mBritish Airways
Deal found 21/5£1,083
Mon 10/609:40SOU - SEA
1 stop15h 21mBritish Airways
Mon 10/619:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 20/5£2,959

Cheap Portsmouth to Seattle flights in May & June 2024

Find cheap flight options from Portsmouth to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 863,249 searches. Prices were last updated on 22 May 2024.
Scroll through some of the best deals on flights from Portsmouth to Seattle in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Thu 6/619:40SOU - SEA
1 stop22h 40mKLM
Mon 10/613:30SEA - SOU
1 stop21h 40mKLM
Deal found 22/5£747
Thu 6/607:55SOU - SEA
2 stops20h 19mKLM
Mon 10/618:05SEA - SOU
1 stop17h 05mKLM
Deal found 22/5£751
Thu 6/607:55SOU - SEA
2 stops20h 19mKLM
Mon 10/618:20SEA - SOU
2 stops16h 50mKLM
Deal found 22/5£767
Thu 6/619:40SOU - SEA
1 stop22h 40mDelta
Mon 10/613:30SEA - SOU
1 stop21h 40mDelta
Deal found 22/5£779
Thu 6/607:55SOU - SEA
2 stops22h 29mDelta
Mon 10/613:45SEA - SOU
2 stops21h 25mDelta
Deal found 22/5£799
Wed 26/616:30SOU - SEA
2 stops27h 00mBritish Airways
Wed 3/719:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£879
Wed 26/607:55SOU - SEA
1 stop16h 40mKLM
Wed 3/708:30SEA - SOU
2 stops15h 30mKLM
Deal found 22/5£944
Mon 3/619:55SOU - SEA
2 stops23h 40mBritish Airways
Tue 11/619:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£982
Mon 3/609:40SOU - SEA
1 stop15h 21mBritish Airways
Tue 11/619:40SEA - SOU
2 stops15h 45mBritish Airways
Deal found 21/5£1,021

Portsmouth to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Portsmouth and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 863,249 searches. Data last updated 22 May 2024.
Scroll through some of the best deals on flights from Portsmouth to Seattle in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Thu 6/619:40SOU - SEA
1 stop22h 40mKLM
Mon 10/613:30SEA - SOU
1 stop21h 40mKLM
Deal found 22/5£747
Thu 6/607:55SOU - SEA
2 stops20h 19mKLM
Mon 10/618:05SEA - SOU
1 stop17h 05mKLM
Deal found 22/5£751
Thu 6/607:55SOU - SEA
2 stops20h 19mKLM
Mon 10/618:20SEA - SOU
2 stops16h 50mKLM
Deal found 22/5£767
Mon 23/1219:55SOU - SEA
2 stops28h 50mBritish Airways
Mon 6/118:45SEA - SOU
2 stops16h 40mBritish Airways
Deal found 21/5£778
Thu 6/619:40SOU - SEA
1 stop22h 40mDelta
Mon 10/613:30SEA - SOU
1 stop21h 40mDelta
Deal found 22/5£779
Mon 23/1219:55SOU - SEA
2 stops28h 50mBritish Airways
Mon 30/1220:05SEA - SOU
1 stop15h 35mBritish Airways
Deal found 21/5£790
Thu 6/607:55SOU - SEA
2 stops22h 29mDelta
Mon 10/613:45SEA - SOU
2 stops21h 25mDelta
Deal found 22/5£799
Thu 26/1219:55SOU - SEA
2 stops28h 50mBritish Airways
Wed 8/118:45SEA - SOU
2 stops16h 40mBritish Airways
Deal found 21/5£808
Thu 26/1219:55SOU - SEA
2 stops28h 50mBritish Airways
Mon 30/1220:05SEA - SOU
1 stop15h 35mBritish Airways
Deal found 21/5£820

One-way flights to Seattle from Portsmouth

Search for one-way flight options from Portsmouth to Seattle. 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 863,249 searches. Data last updated 22 May 2024.
Users in need of a one-way flight from Portsmouth to Seattle can choose from these deals. Users can also find round-trip Portsmouth to Seattle flights by using the search form above.
Thu 20/609:40SOU - SEA
1 stop15h 21mBritish Airways
Deal found 21/5£2,143
Thu 20/619:55SOU - SEA
2 stops23h 40mBritish Airways
Deal found 21/5£2,159

Find flights from Portsmouth to Seattle within your budget

Customise your flight search to find flights from Portsmouth to Seattle 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 863,249 searches. Data last updated 22 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£747 - £1,021

Route

Depart

Return

Price

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 6/6

1 stop22h 40m

Seattle/Tacoma Intl

Mon 10/6

1 stop21h 40m

£747

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 6/6

2 stops20h 19m

Seattle/Tacoma Intl

Mon 10/6

1 stop17h 05m

£751

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 6/6

2 stops20h 19m

Seattle/Tacoma Intl

Mon 10/6

2 stops16h 50m

£767

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 6/6

1 stop22h 40m

Seattle/Tacoma Intl

Mon 10/6

1 stop21h 40m

£779

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Thu 6/6

2 stops22h 29m

Seattle/Tacoma Intl

Mon 10/6

2 stops21h 25m

£799

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 26/6

2 stops27h 00m

Seattle/Tacoma Intl

Wed 3/7

2 stops15h 45m

£879

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 26/6

1 stop16h 40m

Seattle/Tacoma Intl

Wed 3/7

1 stop14h 40m

£944

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Mon 3/6

2 stops23h 40m

Seattle/Tacoma Intl

Tue 11/6

2 stops15h 45m

£982

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Mon 3/6

1 stop15h 21m

Seattle/Tacoma Intl

Tue 11/6

2 stops15h 45m

£1,021

Flights are sorted by cheapest first

Deals found on 22/5

No data available for this route at this time. Please check back soon.

Best time to book a flight from Portsmouth to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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.

Temperature and rainfall in Seattle by month

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

SEA

Temperature

5 - 19 °C

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 22 May 2024.
Read through reviews of airlines operating flights from Portsmouth to Seattle, such as Delta, British Airways and KLM. 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
8.0
Very Good
10,585 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Entertainment

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.

Delta
8.0
Very Good
10,585 reviews
Delta
8.0
Very Good
10,585 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Entertainment

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.

KLM
7.9
Good
1,555 reviews
Delta
8.0
Very Good
10,585 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Entertainment

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.

British Airways
6.8
Okay
6,794 reviews
Delta
8.0
Very Good
10,585 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Entertainment

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 Portsmouth to Seattle. 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 Seattle from Portsmouth?

    For a flight from Portsmouth to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Portsmouth per day. 14 airlines have flights to Seattle/Tacoma Intl from Portsmouth on a regular basis.

  • Can I find flights from Portsmouth to Seattle for under £800 on Cheapflights?

    Yes, there are multiple flights from Portsmouth to Seattle for under £800. The cheapest flight booked recently is on KLM for just £747, but on average you can expect to pay £1,064.

  • What are the most reliable airlines from Portsmouth to Seattle?

    Before booking your flight to Seattle from Portsmouth, check out the most reliable airlines to get you to your destination on time: KLM (75%), American Airlines (73%), Aer Lingus( 73%).

  • What are the cheapest flights from Portsmouth to Seattle?

    Looking for the cheapest flight from Portsmouth to Seattle? While on average our users pay £1,933, our data indicates the cheapest price to be £494. The most popular route (Southampton Eastleigh - Seattle/Tacoma Intl), is priced around £879.

  • What does LHR to SEA mean?

    London Heathrow Airport is LHR and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), Southampton Eastleigh Airport (SOU) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Portsmouth to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Portsmouth to Seattle 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 Portsmouth to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portsmouth to Seattle 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 Portsmouth to Seattle that include hotel bookings?

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

  • How can I find direct flights from Portsmouth to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Seattle 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 Portsmouth to Seattle that allow pets onboard?

    Many airlines flying from Portsmouth to Seattle 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 Portsmouth to Seattle?

    Yes, you can often find last-minute deals on Portsmouth to Seattle 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 Portsmouth to Seattle flight deals updated?

    The Portsmouth to Seattle flight deals you see on this page were last updated on 22/5.

  • What are the most popular airlines that fly from Portsmouth to Seattle?

    When booking a flight from Portsmouth to Seattle, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

  • When is the best time to book a flight from Portsmouth to Seattle?

    Currently, December is the cheapest month in which you can book a flight from Portsmouth to Seattle (average of £576). Flying from Portsmouth to Seattle in July is currently the most expensive (average of £805). 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 Portsmouth to Seattle
See prices for flight routes from nearby airports that may be better suited for you.

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Top 10 airlines flying from Portsmouth to Seattle

Discover the top 10 airlines that operate flights from Portsmouth to Seattle. 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 863,249 searches. Data last updated 22 May 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£254Average£529FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest£336Average£521FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£388Average£609FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£394Average£561FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£427Average£504FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£429Average£577FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£434Average£571FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£437Average£510FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£440Average£614FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£442Average£578FlexibilityNo cancel feeOn-time76%
Search Finnair flights
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Belfast Intl Airport to Tenerife flights
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Search flights from Portsmouth to Seattle by cabin class

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

Hourly flight availability from Portsmouth to Seattle

Find hourly flight availability from Portsmouth to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
43%of flight departuresMorning6 am to noon
56%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

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Fly with Cheapflights

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

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 Seattle from Portsmouth today with Cheapflights!

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

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

Yes, we can. To see specific flights from Portsmouth to Seattle 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 Seattle become cheaper?

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

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