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Cheap flights from Portsmouth to Seattle from £512

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight to Seattle departing on 7/3. 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
3 Mar — 10 Mar1
1 adult
Sun 3/3
Sun 10/3

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

Travelers have found it’s best to book a flight 49 days in advance to save up to 24% 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 49 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 £552, or £679 for flights within the next 24 hours.

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

February can be a great time to fly to Seattle from Portsmouth with a flight ticket averaging about £525. Cheapflights users have found deals in the month of February for as cheap as £341. 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 KLM flights from Portsmouth to Seattle

Explore cheap flight options specifically provided by KLM 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 930,223 searches. Data last updated 28 February 2024.
Take a peek at the cheapest KLM flights we've detected travelling from Portsmouth to Seattle. Make sure to check back often as deals are often changing.
Wed 24/407:55SOU - SEA
1 stop16h 45mKLM
Wed 17/718:10SEA - SOU
1 stop14h 40mKLM
Deal found 27/2£516
Sun 12/519:40SOU - SEA
1 stop22h 35mKLM
Mon 27/518:10SEA - SOU
1 stop14h 40mKLM
Deal found 26/2£542
Sun 12/519:40SOU - SEA
1 stop22h 35mKLM
Mon 27/518:15SEA - SOU
2 stops14h 35mKLM
Deal found 26/2£555

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 930,223 searches. Data last updated 28 February 2024.
Have a look at some of the cheapest available Delta flights departing from Portsmouth and landing in Seattle. Make sure to examine the flight information before completing your reservation.
Thu 7/317:20SOU - SEA
1 stop26h 45mDelta
Mon 11/315:20SEA - SOU
1 stop18h 30mDelta
Deal found 26/2£512
Thu 7/309:20SOU - SEA
2 stops21h 52mDelta
Mon 11/312:00SEA - SOU
2 stops21h 50mDelta
Deal found 26/2£516
Wed 24/407:55SOU - SEA
1 stop16h 45mDelta
Wed 17/711:45SEA - SOU
2 stops21h 05mDelta
Deal found 27/2£519
Wed 24/407:55SOU - SEA
2 stops22h 30mDelta
Wed 17/711:45SEA - SOU
2 stops21h 05mDelta
Deal found 27/2£524
Tue 26/309:20SOU - SEA
2 stops20h 05mDelta
Tue 2/418:10SEA - SOU
1 stop17h 00mDelta
Deal found 27/2£721
Thu 8/808:30SOU - SEA
1 stop16h 05mDelta
Fri 16/818:10SEA - SOU
1 stop14h 40mDelta
Deal found 27/2£2,252
Sat 10/808:30SOU - SEA
1 stop16h 05mDelta
Sun 18/818:10SEA - SOU
1 stop14h 40mDelta
Deal found 27/2£4,094

Cheap Portsmouth to Seattle flights in February & March 2024

Find cheap flight options from Portsmouth to Seattle specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 930,223 searches. Prices were last updated on 28 February 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 7/309:20SOU - SEA
1 stop34h 45mDelta
Mon 11/308:15SEA - SOU
2 stops17h 35mDelta
Deal found 26/2£512
Thu 7/309:20SOU - SEA
2 stops21h 52mDelta
Mon 11/312:00SEA - SOU
2 stops21h 50mDelta
Deal found 26/2£516
Tue 26/309:20SOU - SEA
2 stops20h 05mDelta
Tue 2/418:10SEA - SOU
1 stop17h 00mDelta
Deal found 27/2£721
Tue 26/317:20SOU - SEA
2 stops31h 41mVirgin Atlantic
Tue 2/407:25SEA - SOU
2 stops25h 25mVirgin Atlantic
Deal found 27/2£743

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 930,223 searches. Data last updated 28 February 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 7/309:20SOU - SEA
1 stop34h 45mDelta
Mon 11/308:15SEA - SOU
2 stops17h 35mDelta
Deal found 26/2£512
Thu 7/309:20SOU - SEA
2 stops21h 52mDelta
Mon 11/312:00SEA - SOU
2 stops21h 50mDelta
Deal found 26/2£516
Wed 24/407:55SOU - SEA
1 stop16h 45mDelta
Wed 17/711:45SEA - SOU
2 stops21h 05mDelta
Deal found 27/2£519
Wed 24/407:55SOU - SEA
2 stops22h 30mDelta
Wed 17/711:45SEA - SOU
2 stops21h 05mDelta
Deal found 27/2£524
Sun 12/519:40SOU - SEA
1 stop22h 35mKLM
Mon 27/518:10SEA - SOU
1 stop14h 40mKLM
Deal found 26/2£542
Sun 12/519:40SOU - SEA
1 stop22h 35mKLM
Mon 27/518:15SEA - SOU
2 stops14h 35mKLM
Deal found 26/2£555
Sun 12/519:40SOU - SEA
2 stops28h 35mVirgin Atlantic
Mon 27/522:55SEA - SOU
2 stops24h 30mVirgin Atlantic
Deal found 26/2£563
Tue 26/309:20SOU - SEA
2 stops20h 05mDelta
Tue 2/418:10SEA - SOU
1 stop17h 00mDelta
Deal found 27/2£721
Tue 26/317:20SOU - SEA
2 stops31h 41mVirgin Atlantic
Tue 2/407:25SEA - SOU
2 stops25h 25mVirgin Atlantic
Deal found 27/2£743

Portsmouth to Seattle flights leaving soon

Find last-minute flight options from Portsmouth to Seattle 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 930,223 searches. Data last updated 28 February 2024.
Have a look at some of the last-minute flights available departing from Portsmouth to Seattle. Users should examine the flight details to ensure there are no surprises.
Thu 7/317:20SOU - SEA
1 stop26h 45mDelta
Mon 11/315:20SEA - SOU
1 stop18h 30mDelta
Deal found 26/2£512
Thu 7/309:20SOU - SEA
2 stops21h 52mDelta
Mon 11/312:00SEA - SOU
2 stops21h 50mDelta
Deal found 26/2£516

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 930,223 searches. Data last updated 28 February 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.
Mon 24/607:55SOU - SEA
1 stop16h 40mDelta
Deal found 26/2£1,265
Sat 22/607:55SOU - SEA
1 stop16h 40mDelta
Deal found 26/2£1,306
Sun 23/609:25SOU - SEA
1 stop15h 10mDelta
Deal found 26/2£1,366
Sun 23/619:55SOU - SEA
2 stops23h 40mBritish Airways
Deal found 26/2£1,369
Sat 29/609:40SOU - SEA
1 stop15h 21mBritish Airways
Deal found 26/2£1,399
Sat 22/609:55SOU - SEA
2 stops15h 35mBritish Airways
Deal found 26/2£1,413
Sun 28/719:55SOU - SEA
2 stops23h 40mBritish Airways
Deal found 26/2£1,667
Sun 28/709:40SOU - SEA
1 stop15h 21mBritish Airways
Deal found 26/2£1,697
Wed 15/507:55SOU - SEA
1 stop16h 45mDelta
Deal found 25/2£9,028

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 930,223 searches. Data last updated 28 February 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£516 - £743

Route

Depart

Return

Price

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 24/4

1 stop16h 45m

Seattle/Tacoma Intl

Wed 17/7

1 stop14h 40m

£516

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 24/4

1 stop16h 45m

Seattle/Tacoma Intl

Wed 17/7

2 stops21h 05m

£519

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Wed 24/4

2 stops22h 30m

Seattle/Tacoma Intl

Wed 17/7

2 stops21h 05m

£524

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Sun 12/5

1 stop22h 35m

Seattle/Tacoma Intl

Mon 27/5

1 stop14h 40m

£542

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Sun 12/5

1 stop22h 35m

Seattle/Tacoma Intl

Mon 27/5

2 stops14h 35m

£555

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Sun 12/5

2 stops28h 35m

Seattle/Tacoma Intl

Mon 27/5

2 stops24h 30m

£563

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 12/3

2 stops28h 50m

Seattle/Tacoma Intl

Tue 19/3

2 stops18h 38m

£638

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 26/3

2 stops20h 05m

Seattle/Tacoma Intl

Tue 2/4

1 stop17h 00m

£721

Southampton EastleighSeattle/Tacoma Intl

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 26/3

2 stops31h 41m

Seattle/Tacoma Intl

Tue 2/4

2 stops25h 25m

£743

Flights are sorted by cheapest first

Deals found on 27/2

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 28 February 2024.
Read through reviews of airlines operating flights from Portsmouth to Seattle, such as KLM, Delta and British Airways. 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
11,830 reviews

Boarding

8.2

Overall

8.1

Food

7.5

Crew

8.6

Entertainment

8.1

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very Good
11,830 reviews
8.1
Very Good
11,830 reviews

Boarding

8.2

Overall

8.1

Food

7.5

Crew

8.6

Entertainment

8.1

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
1,761 reviews
8.1
Very Good
11,830 reviews

Boarding

8.2

Overall

8.1

Food

7.5

Crew

8.6

Entertainment

8.1

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
769 reviews
8.1
Very Good
11,830 reviews

Boarding

8.2

Overall

8.1

Food

7.5

Crew

8.6

Entertainment

8.1

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

6.9
Okay
7,017 reviews
8.1
Very Good
11,830 reviews

Boarding

8.2

Overall

8.1

Food

7.5

Crew

8.6

Entertainment

8.1

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

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 £600 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Seattle for under £600. The cheapest flight booked recently is on KLM for just £516, but on average you can expect to pay £905.

Are there last-minute flights available from Portsmouth to Seattle for under £600?

There are currently 2+ open flights from Portsmouth to Seattle within the next 7 days for less than £600.

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

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 (76%), Air France (76%), Delta( 76%).

What are the cheapest flights from Portsmouth to Seattle?

Looking for the cheapest flight from Portsmouth to Seattle? While on average our users pay £1,755, our data indicates the cheapest price to be £449. The most popular route (Southampton Eastleigh - Seattle/Tacoma Intl), is priced around £512.

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.

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.

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 930,223 searches. Data last updated 28 February 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£278Average£538FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest£344Average£531FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£370Average£581FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£403Average£601FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£413Average£567FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest£426Average£498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapest£433Average£579FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£434Average£574FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£438Average£562FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest£442Average£580FlexibilityNo cancel feeOn-time77%
Search Air France flights

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.

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 28 February 2024.
1%of flight departuresEarly morningMidnight to 6 am
52%of flight departuresMorning6 am to noon
47%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Seattle for you. Better yet — we are completely free to use.

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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