Direct flights from Seattle | Cheapflights

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Cheapest return flight

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Fri 18/9

10:30-13:10

Nonstop1h 40m

Calgary

Tue 22/9

17:50-18:45

Nonstop1h 55m

£208

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Thu 8/10

10:30-13:10

Nonstop1h 40m

Calgary

Sun 11/10

08:45-09:40

Nonstop1h 55m

£211

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Wed 9/9

19:35-22:15

Nonstop1h 40m

Calgary

Sat 12/9

08:45-09:40

Nonstop1h 55m

£218

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Sun 25/10

15:30-18:10

Nonstop1h 40m

Calgary

Thu 29/10

13:45-14:40

Nonstop1h 55m

£238

Fastest return journey

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Sun 25/10

15:35-18:10

Nonstop1h 35m

Calgary

Thu 29/10

19:00-19:49

Nonstop1h 49m

£239

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Sat 12/9

19:35-22:15

Nonstop1h 40m

Calgary

Sun 13/9

08:45-09:40

Nonstop1h 55m

£246

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Sat 28/11

17:48-22:30

Nonstop2h 42m

Calgary

Mon 30/11

09:00-07:57

Nonstop0h 57m

£270

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Thu 22/10

15:35-18:10

Nonstop1h 35m

Calgary

Mon 26/10

19:00-19:49

Nonstop1h 49m

£307

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Sun 11/10

08:02-10:43

Nonstop1h 41m

Calgary

Sun 18/10

19:00-19:49

Nonstop1h 49m

£317

SeattleCalgary

SEA Seattle/Tacoma Intl - YYC Calgary

SEAYYC

Seattle/Tacoma Intl

Thu 8/10

10:30-13:10

Nonstop1h 40m

Calgary

Sun 11/10

08:45-09:40

Nonstop1h 55m

£325

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 44 resultsSorted by cheapest first

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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.

SEA-LHR

SEA-YYC

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.

Reviews of airlines flying non-stop to Seattle

Check out reviews from past customers who have flown Alaska Airlines,Virgin Atlantic, 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.

Alaska Airlines

7.9

Good

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

Alaska Airlines

7.9

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

Virgin Atlantic

7.4

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

British Airways

6.7

Okay

Alaska Airlines

7.9

Good

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

Related info for your journey

Where can you fly direct from Seattle?
Currently, the most popular direct flight destination from Seattle is London Heathrow Airport.
How much are direct flights from Seattle?
On average, a one-way direct flight from Seattle will cost users approximately £252. If you're looking for a direct round-trip flight from Seattle, you can expect to pay around £338.
How long is a direct flight from Seattle?
While the flight duration depends heavily on the destination, on average, travelers can expect non-stop flights from Seattle to last approximately 3h 39m on average. The quickest direct flight from Seattle at this time departs from Seattle (1h 00m), while the longest leaves from Seattle (9h 15m).
What is the best time of year to fly direct from Seattle?
If you're seeking the lowest price on a direct flight from Seattle, January is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

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