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£37+ 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 11/12. 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
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

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 11 November 2025.

Cheapest one-way flight

£244

Cheapest round-trip flight

£445

Cheapest airline

Alaska Airlines

Most popular destination

Manila Ninoy Aquino Intl (MNL)

Good round-trip deal

£172 or less

Good one-way deal

£59 or less
The cheapest one-way flight from Seattle/Tacoma Intl is currently to Manila Ninoy Aquino Intl.
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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 £180).
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Manila Ninoy Aquino Intl (MNL) is currently the most popular flight destination from Seattle/Tacoma Intl (average return price of £288).
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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

Enter your travel dates to find the best prices.

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 11 November 2025.

Wed 10/1207:55SEA - DEN
Nonstop2h 49mAlaska Airlines
Wed 10/1215:42DEN - SEA
Nonstop3h 08mAlaska Airlines
Deal found 9/11£71
Wed 10/1207:40SEA - DEN
Nonstop2h 52mDelta
Wed 10/1219:45DEN - SEA
Nonstop3h 16mDelta
Deal found 10/11£74
Wed 3/1207:55SEA - DEN
Nonstop2h 49mAlaska Airlines
Wed 10/1206:45DEN - SEA
Nonstop3h 13mAlaska Airlines
Deal found 10/11£75
Mon 15/1207:55SEA - DEN
Nonstop2h 49mAlaska Airlines
Sat 20/1220:22DEN - SEA
Nonstop3h 08mAlaska Airlines
Deal found 9/11£78
Tue 2/1219:35SEA - DEN
Nonstop2h 46mDelta
Thu 11/1219:45DEN - SEA
Nonstop3h 16mDelta
Deal found 10/11£81
Wed 3/1207:55SEA - DEN
Nonstop2h 49mAlaska Airlines
Tue 9/1206:45DEN - SEA
Nonstop3h 13mAlaska Airlines
Deal found 10/11£83
Thu 4/1219:35SEA - DEN
Nonstop2h 46mDelta
Sun 7/1206:05DEN - SEA
Nonstop3h 10mDelta
Deal found 9/11£84
Tue 2/1219:35SEA - DEN
Nonstop2h 46mDelta
Sat 6/1212:25DEN - SEA
Nonstop3h 09mDelta
Deal found 10/11£86
Sun 1/319:40SEA - DEN
Nonstop2h 45mDelta
Tue 3/312:30DEN - SEA
Nonstop3h 13mDelta
Deal found 10/11£89
Mon 2/320:14SEA - DEN
Nonstop2h 45mHawaiian Airlines
Wed 4/312:34DEN - SEA
Nonstop3h 07mHawaiian Airlines
Deal found 10/11£90
Wed 3/1215:15SEA - DEN
Nonstop2h 39mDelta
Sat 6/1205:30DEN - SEA
1 stop4h 55mDelta
Deal found 10/11£93
Mon 8/1214:35SEA - KEF
Nonstop7h 40mIcelandair
Mon 15/1217:00KEF - SEA
Nonstop8h 00mIcelandair
Deal found 9/11£362

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 11 November 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 3/12

07:55-11:44

Nonstop2h 49m

Denver Intl

Wed 10/12

06:45-08:58

Nonstop3h 13m

£75

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 3/12

07:55-11:44

Nonstop2h 49m

Denver Intl

Fri 12/12

06:00-08:10

Nonstop3h 10m

£75

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 3/12

07:55-11:44

Nonstop2h 49m

Denver Intl

Thu 11/12

20:20-22:30

Nonstop3h 10m

£75

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 3/12

07:55-11:44

Nonstop2h 49m

Denver Intl

Wed 3/12

15:42-17:50

Nonstop3h 08m

£78

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 15/12

07:40-11:32

Nonstop2h 52m

Denver Intl

Thu 1/1

06:05-08:20

Nonstop3h 15m

£81

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 6/12

07:40-11:32

Nonstop2h 52m

Denver Intl

Sat 6/12

19:45-22:01

Nonstop3h 16m

£83

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 8/12

19:35-23:21

Nonstop2h 46m

Denver Intl

Tue 9/12

06:05-08:15

Nonstop3h 10m

£83

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 7/12

20:14-23:59

Nonstop2h 45m

Denver Intl

Tue 9/12

12:40-14:46

Nonstop3h 06m

£83

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 13/2

16:30-20:00

Nonstop2h 30m

Denver Intl

Mon 16/2

21:55-00:10

Nonstop3h 15m

£89

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 3/3

17:40-21:23

Nonstop2h 43m

Denver Intl

Wed 4/3

12:34-14:41

Nonstop3h 07m

£89

Flights are sorted by cheapest return flights first.

Deals found on 8/11

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 7 November 2025.

Booking 65 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, October is the cheapest month in which you can book a flight from Seattle (average of £377). Flying from Seattle in June will prove the most costly (average of £601). 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. These airlines fly to the following popular destinations: London.

Alaska Airlines
Alaska Airlines
From £65
Virgin Atlantic
Virgin Atlantic
From £375
British Airways
British Airways
From £360
Icelandair
Icelandair
From £373

What are popular destinations to fly to from Seattle?

If you’re flying from Seattle, these routes are more frequently taken by airlines Los Angeles (585 flights per day), San Francisco (445 flights per day) and Spokane (396 flights per day).

London
London
From £391
Manila Ninoy Aquino Intl
Manila Ninoy Aquino Intl
From £244
Vancouver Intl
Vancouver Intl
From £53
New York
New York
From £140

What is the cheapest place to fly to from Seattle?

The cheapest city to fly to from Seattle is Vancouver Intl, with prices starting at £53. Explore other affordable destinations below.

Vancouver Intl
Vancouver Intl
From £53
Boise Air Term. Gowen Fld
Boise Air Term. Gowen Fld
From £59
San Francisco
San Francisco
From £70

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 and British 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
7.5
Good
673 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
673 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,511 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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Direct flights from Washington

Book a direct flight from one of these other cities located in Washington.
Direct flights from Spokane
Direct flights from Pasco
Direct flights from Bellingham
Direct flights from Pullman

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 11 November 2025.

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

    This month, the top selected destinations from Seattle are Mumbai, Bangkok Suvarnabhumi Airport, Atlanta. Throughout the year, Boston, Bangkok Suvarnabhumi Airport, Mumbai 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 £53 to Vancouver Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for £366 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 Air Canada have the cheapest prices from Seattle. Alaska Airlines flights from Seattle to Anchorage (£65), Delta flights from Seattle to Denver Intl (£67), and Air Canada flights from Seattle to Vancouver Intl (£129).

  • 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 £349
    Seattle/Tacoma Intl to Kahului from £414
    Seattle/Tacoma Intl to Anchorage from £682
    Seattle/Tacoma Intl to Frankfurt am Main Airport from £865

  • 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 £151 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 October; 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 £356 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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