Cheap flights from Portsmouth to Seattle

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How to find the cheapest flight from
Portsmouth to Seattle (SEA)

All the information you need to plan the best null to SEA flight in 2021: compare Portsmouth to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
How far in advance should I book a flight from Portsmouth to Seattle?

Travellers have found it’s best to book a flight 52 days in advance to save up to 51% 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 52 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 £450, or £589 for flights within the next 24 hours.

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

Our data shows that February tends to be the cheapest month to fly to Seattle from Portsmouth. Users have commonly found prices around £397 for the month, but tickets can be as low as £262. Due to multiple factors, prepare for potentially higher prices in July.

Portsmouth to Seattle 2021 flight deals

Cheap flights to Seattle from Portsmouth found for this year
15 Dec - 22 Dec
£541pp
SOU
Southampton Eastleigh
KLM
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
 
1 STOP
SOU
Southampton Eastleigh
15 Dec - 22 Dec
£544pp
SOU
Southampton Eastleigh
KLM
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
   
2 STOPS
SOU
Southampton Eastleigh
23 Dec - 3 Jan
£815pp
SOU
Southampton Eastleigh
KLM
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
 
1 STOP
SOU
Southampton Eastleigh

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Portsmouth</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Portsmouth to Seattle

Are flight prices decreasing from Portsmouth to Seattle due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Portsmouth and Seattle for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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 centre vof the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Portsmouth per day. 18 airlines have flights to Seattle/Tacoma Intl from Portsmouth on a regular basis.

Can I find flights from Portsmouth to Seattle for under £509 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Seattle for under £509. The cheapest flight booked recently is on KLM for just £476, but on average you can expect to pay £601.

Are there direct flights from Portsmouth to Seattle for under £509 on Cheapflights?

There are no direct flights from Portsmouth to Seattle, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Is Portsmouth weather warmer or cooler than Seattle?

With an average temperature of 25 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in Seattle are hotter than in Portsmouth.

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

The most popular airlines flying from Portsmouth to Seattle are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

What are the cheapest flights from Portsmouth to Seattle?

The cheapest flight price from Portsmouth to Seattle is £284. On average you can expect to pay £1,209. The most popular route, (Southampton Eastleigh - Seattle/Tacoma Intl), can usually be booked for £477.

What are the most reliable airlines from Portsmouth to Seattle?

No one likes to see their flight delayed. When booking a flight from Portsmouth to Seattle consider choosing Alaska Airlines(94%), Air France(91%) or Delta(91%), as they are the most reliable in getting you off to your destination on time.

How long does is the flight from Portsmouth to Seattle?

There are many flights that can get you from Portsmouth to Seattle in 20h 15m. Fly via KLM or Delta to get the fastest option.

What are the cheapest airlines to flying from Portsmouth to Seattle return?

Cheapflights users have booked flights from Portsmouth to Seattle from £476 return. Another airline that can offer you cheap pricing is Delta.

Alternative routes for Portsmouth to Seattle

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

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Portsmouth to Seattle.
Today's exchange rate
£1 = $1.38
Average temperature for July in Seattle
25.0 °C
Avg rainfall for July in Seattle
18.0 mm

Airports servicing Portsmouth

Airports servicing Seattle

Top 10 airlines flying from Portsmouth to Seattle

The chart below displays the airlines Cheapflights users travelling from Portsmouth to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Austrian Airlines
£311 £439 No cancel fee 78%
Search Austrian Airlines flights
Norwegian
£426 £582 No cancel fee 74%
Search Norwegian flights
Lufthansa
£374 £625 No cancel fee 76%
Search Lufthansa flights
Air Canada
£358 £634 No cancel fee 67%
Search Air Canada flights
SWISS
£510 £666 No cancel fee 79%
Search SWISS flights
Iberia
£402 £690 No cancel fee 77%
Search Iberia flights
KLM
£388 £697 No cancel fee 75%
Search KLM flights
Norwegian Air UK
£386 £707 No cancel fee N/A
Search Norwegian Air UK flights
Icelandair
£444 £750 No cancel fee 76%
Search Icelandair flights
Air France
£415 £762 No cancel fee 77%
Search Air France flights

Hourly flight availability from Portsmouth to Seattle

See what time of day planes typically take off from Portsmouth towards Seattle.
Afternoon Midday to 6 PM 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Morning 6 AM to midday 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
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6 PM
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