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£67+ Cheap flights from Seattle

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 3/9. 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.
SEA — LHR
31 Aug — 7 Sep1
1 adult

What to know about flights from Seattle

Discover essential information about flights departing from Seattle, including flight schedules, destinations, airlines operating at the Seattle airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 26 August 2025.

Cheapest round-trip flight

£351

Cheapest airline

Alaska Airlines

Good round-trip deal

£141 or less

Good one-way deal

£57 or less
The cheapest round-trip flight from Seattle/Tacoma Intl is currently to London Heathrow.
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On average, Alaska Airlines currently has the cheapest one-way flight from Seattle/Tacoma Intl (avg. price of £175).
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Price to beat on a round-trip flight from Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl.
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Find flights from Seattle

Cheapest flights from Seattle
Explore the most affordable flight options available from Seattle. Find the lowest fares based on data from user searches, with prices last updated on 26 August 2025.

Mon 29/906:12SEA - LAX
1 stop11h 06mFrontier
Tue 30/913:37LAX - SEA
1 stop9h 22mFrontier
Deal found 25/8£107
Wed 17/910:08SEA - LAX
Nonstop2h 58mAlaska Airlines
Wed 17/916:41LAX - SEA
1 stop7h 01mAlaska Airlines
Deal found 25/8£112
Thu 9/1013:02SEA - LAX
1 stop18h 33mFrontier
Thu 16/1015:26LAX - SEA
1 stop26h 18mFrontier
Deal found 25/8£113
Tue 16/920:08SEA - LAX
1 stop11h 20mAlaska Airlines
Wed 17/910:00LAX - SEA
Nonstop2h 54mAlaska Airlines
Deal found 25/8£116
Fri 5/918:24SEA - LAX
Nonstop2h 50mFrontier
Wed 10/913:37LAX - SEA
1 stop9h 22mFrontier
Deal found 25/8£118
Wed 29/1005:20SEA - LAX
2 stops6h 51mAlaska Airlines
Wed 29/1015:58LAX - SEA
Nonstop2h 59mAlaska Airlines
Deal found 25/8£119
Wed 1/1016:59SEA - LAX
Nonstop2h 49mAlaska Airlines
Wed 1/1022:34LAX - SEA
1 stop11h 46mAlaska Airlines
Deal found 24/8£124
Wed 24/906:25SEA - LAX
Nonstop2h 45mUnited Airlines
Sat 27/918:58LAX - SEA
Nonstop2h 55mUnited Airlines
Deal found 25/8£125
Tue 23/918:50SEA - LAX
1 stop12h 31mAlaska Airlines
Wed 24/910:00LAX - SEA
Nonstop2h 54mAlaska Airlines
Deal found 25/8£131
Sat 6/906:25SEA - LAX
Nonstop2h 45mUnited Airlines
Sat 6/919:22LAX - SEA
Nonstop2h 53mUnited Airlines
Deal found 26/8£133
Tue 23/912:19SEA - LGA
1 stop8h 26mAmerican Airlines
Tue 30/912:20LGA - SEA
1 stop8h 53mAmerican Airlines
Deal found 25/8£145
Sat 20/905:55SEA - LGA
1 stop7h 00mSouthwest
Tue 23/917:00LGA - SEA
1 stop9h 10mSouthwest
Deal found 25/8£146

Find flights from Seattle within your budget

 
Find flights departing from Seattle that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 26 August 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 5/9

18:24-21:14

Nonstop2h 50m

Los Angeles

Wed 10/9

13:37-22:59

1 stop9h 22m

£109

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 6/9

07:00-20:13

1 stop13h 13m

Los Angeles

Wed 10/9

13:37-22:59

1 stop9h 22m

£115

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 28/10

11:30-12:11

1 stop24h 41m

Los Angeles

Wed 29/10

15:58-18:57

Nonstop2h 59m

£116

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 16/9

19:05-07:28

1 stop12h 23m

Los Angeles

Wed 17/9

10:00-12:54

Nonstop2h 54m

£116

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 5/9

18:24-21:14

Nonstop2h 50m

Los Angeles

Tue 9/9

13:37-22:59

1 stop9h 22m

£118

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 29/10

05:20-12:11

2 stops6h 51m

Los Angeles

Wed 29/10

15:58-18:57

Nonstop2h 59m

£119

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 4/11

11:32-17:01

1 stop5h 29m

Los Angeles

Tue 4/11

20:30-23:34

Nonstop3h 04m

£119

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 1/10

16:59-19:48

Nonstop2h 49m

Los Angeles

Wed 1/10

22:34-10:20

1 stop11h 46m

£124

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 14/10

17:26-20:11

Nonstop2h 45m

Los Angeles

Sat 18/10

09:00-11:56

Nonstop2h 56m

£125

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 11/10

06:35-09:20

Nonstop2h 45m

Los Angeles

Tue 14/10

18:58-21:53

Nonstop2h 55m

£125

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 60 results
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Best time to book a flight from Seattle

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

Travel insights for flights from Seattle

Get recent, data-driven insights about flights from Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Seattle to Heathrow. Price data was last updated on 22 August 2025.

Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle?

Currently, November is the cheapest month in which you can book a flight from Seattle (average of £359). Flying from Seattle in June will prove the most costly (average of £588). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Seattle?

Many airlines operate round-trip flights from Seattle: Virgin Atlantic, British Airways, Icelandair. These airlines fly to the following popular destinations: London.

Alaska Airlines
Alaska Airlines
From £85
Virgin Atlantic
Virgin Atlantic
From £544
British Airways
British Airways
From £474
Icelandair
Icelandair
From £498

What are popular destinations to fly to from Seattle?

If you’re flying from Seattle, these routes are more frequently taken by airlines Chicago (776 flights per day), Los Angeles (627 flights per day) and San Francisco (485 flights per day).

London
London
From £391
Vancouver Intl
Vancouver Intl
From £100
San Francisco
San Francisco
From £83
Calgary
Calgary
From £77

What is the cheapest place to fly to from Seattle?

The cheapest city to fly to from Seattle is Las Vegas Harry Reid Intl, with prices starting at £51. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From £68
Calgary
Calgary
From £77
Boise Air Term. Gowen Fld
Boise Air Term. Gowen Fld
From £77
San Francisco
San Francisco
From £83

Airline reviews for flights from Seattle

Get insights into the airlines that provide service from Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Seattle. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Check out reviews from past customers who have flown Virgin Atlantic, Icelandair, andBritish Airways from Seattle to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.4
Good
658 reviews
Check prices

Entertainment

7.5

Food

6.9

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row
Virgin Atlantic
7.4
Good
658 reviews
Virgin Atlantic
7.4
Good
658 reviews
Check prices

Entertainment

7.5

Food

6.9

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row
Icelandair
7.0
Good
533 reviews
Virgin Atlantic
7.4
Good
658 reviews
Check prices

Entertainment

7.5

Food

6.9

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row
British Airways
6.7
Okay
7,305 reviews
Virgin Atlantic
7.4
Good
658 reviews
Check prices

Entertainment

7.5

Food

6.9

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row

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Related info for your journey

Access useful and relevant information related to your journey from Seattle. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 26 August 2025.

  • What are the most popular destinations to fly to from Seattle?

    This month, the top selected destinations from Seattle are Boston, Atlanta, Bangkok Suvarnabhumi Airport. Throughout the year, Boston, Mumbai, Bangkok Suvarnabhumi Airport are some of the top choices made by users flying from Seattle.

  • What is the cheapest flight from Seattle to anywhere?

    Users have flown out of Seattle for as low as £51 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for £405 to fly from Seattle.

  • What are the cheapest airlines flying from Seattle to anywhere?

    Over the past few days, we've found that Alaska Airlines, Delta, and Aer Lingus have the cheapest prices from Seattle. Alaska Airlines flights from Seattle to Anchorage (£63), Delta flights from Seattle to Denver Intl (£65), and Aer Lingus flights from Seattle to Dublin (£247).

  • What is the cheapest premium economy flight from Seattle?

    Here are some of the cheapest offers we have found for the cheapest premium economy flights from Seattle.
    Seattle/Tacoma Intl to San Francisco from £341
    Seattle/Tacoma Intl to Anchorage from £665
    Seattle/Tacoma Intl to Houston George Bush Intcntl Airport from £833
    Seattle/Tacoma Intl to Frankfurt am Main Airport from £844

  • What is the cheapest first class flight from Seattle?

    If you’re looking for a cheap first-class flight from Seattle, consider Missoula. Prices start at £147 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from Seattle?

    At the present moment the cheapest month to fly from Seattle is currently November; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Seattle?

    Check out the cheapest flights from Seattle to embark to:
    Travel from Seattle to London from £348 round trip
    Travel from Seattle to Manchester from £396 round trip
    Travel from Seattle to Edinburgh from £405 round trip

  • How does Cheapflights help users find flights from Seattle?

    Cheapflights helps you search for flights from Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

  • Can Cheapflights find flights from Seattle with no change fees?

    Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle flexibly with Cheapflights today.

  • Can Cheapflights notify me if prices for flights from Seattle become cheaper?

    Not ready to book yet? You can track prices for flights from Seattle on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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How does Cheapflights help users find flights from Seattle?

Cheapflights helps you search for flights from Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

Can Cheapflights find flights from Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Seattle on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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