How does KAYAK find such low prices on flights from Portsmouth to Washington?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portsmouth to Washington. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portsmouth to Washington?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington from Portsmouth is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Portsmouth to Washington?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington with an airline and back to Portsmouth with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portsmouth to Washington?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

£442 CHEAP FLIGHTS from Portsmouth to Washington

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

...and more

Travellers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info

Low season	January
High season	August
Cheapest flight	£442

Best time to beat the crowds but there is an average 1% increase in price.

Most popular time to fly (26% more expensive on average)

Flight from Southampton to Seattle

How does KAYAK find such low prices on flights from Portsmouth to Washington?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portsmouth to Washington.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portsmouth to Washington?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington from Portsmouth is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Portsmouth to Washington?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington with an airline and back to Portsmouth with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portsmouth to Washington?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Book cheap flights from Portsmouth to Washington

Recent return flight deals

26/7Sat

1 stopDelta

14h 30mSOU-SEA

2/8Sat

1 stopDelta

18h 50mSEA-SOU

£806

26/7Sat

2 stopsDelta

21h 28mSOU-SEA

2/8Sat

1 stopDelta

18h 50mSEA-SOU

£810

26/7Sat

2 stopsDelta

21h 28mSOU-SEA

2/8Sat

2 stopsDelta

22h 55mSEA-SOU

£820

27/7Sun

1 stopDelta

14h 30mSOU-SEA

3/8Sun

2 stopsDelta

17h 35mSEA-SOU

£848

26/7Sat

1 stopKLM

30h 15mSOU-SEA

2/8Sat

1 stopKLM

15h 20mSEA-SOU

£872

27/7Sun

2 stopsDelta

21h 24mSOU-SEA

3/8Sun

2 stopsDelta

18h 35mSEA-SOU

£920

27/7Sun

3 stops

43h 33mSOU-SEA

3/8Sun

3 stops

19h 45mSEA-SOU

£952

26/7Sat

3 stops

44h 03mSOU-SEA

2/8Sat

3 stops

33h 00mSEA-SOU

£1,038

26/7Sat

2 stops

19h 00mSOU-SEA

2/8Sat

3 stops

33h 00mSEA-SOU

£1,064

Recent one-way flight deals

7/9Sun

1 stopAer Lingus

29h 50mSOU-SEA

£442

7/9Sun

1 stopAer Lingus

29h 50mSOU-SEA

£446

7/9Sun

1 stopAer Lingus

29h 50mSOU-SEA

£447

7/9Sun

2 stopsAer Lingus

32h 09mSOU-SEA

£478

7/9Sun

2 stopsAer Lingus

32h 04mSOU-SEA

£482

7/9Sun

2 stopsAer Lingus

32h 04mSOU-SEA

£483

Everything you need to know for your flight to Washington

Cabin class

Complete your trip

Flights to other cities

Origins

Popular routes

Cabin class types available on flights to Portsmouth

First Class flights to Washingtonfrom £291

Business Class flights to Washingtonfrom £269

Prem Econ Class flights to Washingtonfrom £352

Economy class flights to Washingtonfrom £51

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.

£442 Find Cheap Flights from Portsmouth to Washington

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

Good to know - Cheap tickets from Portsmouth to Washington

FAQs for booking flights from Portsmouth to Washington

How does KAYAK find such low prices on flights from Portsmouth to Washington?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portsmouth to Washington.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portsmouth to Washington?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington from Portsmouth is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Portsmouth to Washington?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington with an airline and back to Portsmouth with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portsmouth to Washington?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Book cheap flights from Portsmouth to Washington

Recent return flight deals

Search by stops

Search by airline

Search by price

Recent one-way flight deals

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Washington

Cabin class types available on flights to Portsmouth

Complete your trip to Washington with a hotel stay or car hire

Flights to other popular destinations

Flights from domestic origins to Portsmouth

Flights to popular cities in Washington