$153+ Cheap flights from Calgary (YYC) to Seattle (SEA)
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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — SEA
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Calgary to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Calgary to Seattle/Tacoma Intl are usually found in November or January, booked 56 days in advance, depart on a Thursday or Saturday and return on a Friday
Cheap flight deals from Calgary to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Calgary to SeattleExplore the most affordable flight options available from Calgary to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from Calgary to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:45 am -
Nonstop1h 55m
Sat 9/127:35 pm -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:50 pm -
Nonstop1h 55m
Sun 9/2710:30 am -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$262
This Super.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:45 am -
Nonstop1h 55m
Fri 10/237:35 pm -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$264
This Vliegwinkel deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 05m
Sun 9/275:50 am -
1 stop6h 19m
Deal found 8/18![Air Canada logo]()
$265
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:50 pm -
Nonstop1h 55m
Tue 9/228:10 pm -
Nonstop1h 36m
Deal found 8/18![Multiple Airlines logo]()
$266
This Justfly.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:50 pm -
Nonstop1h 55m
Sun 9/67:00 am -
Nonstop1h 50m
Deal found 8/18![WestJet logo]()
$267
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
1 stop8h 22m
Tue 9/225:00 am -
1 stop7h 53m
Deal found 8/18![United Airlines logo]()
$269
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:50 pm -
Nonstop1h 55m
Sun 9/138:10 pm -
Nonstop1h 36m
Deal found 8/16![Multiple Airlines logo]()
$270
This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop5h 05m
Wed 9/2310:30 am -
Nonstop1h 40m
Deal found 8/14![Multiple Airlines logo]()
$271
This Air Canada deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:05 pm -
1 stop5h 27m
Mon 10/127:20 pm -
1 stop5h 19m
Deal found 8/17![Air Canada logo]()
$274
Best flights from Calgary to SeattleDiscover carefully curated flight deals from Calgary to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from Calgary to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:45 am -
Nonstop1h 55m
Sun 9/208:10 pm -
Nonstop1h 36m
Deal found 8/14![Multiple Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:22 pm -
1 stop10h 53m
Mon 10/268:35 pm -
1 stop14h 51m
Deal found 8/17![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:50 pm -
Nonstop1h 55m
Mon 9/285:30 pm -
1 stop4h 25m
Deal found 8/14![Delta logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:10 am -
Nonstop0h 50m
Wed 1/275:57 pm -
Nonstop2h 30m
Deal found 8/15![Alaska Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
1 stop16h 31m
Sat 9/195:00 am -
1 stop7h 53m
Deal found 8/15![United Airlines logo]()
$293
This United deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:22 pm -
1 stop9h 04m
Fri 10/1610:30 am -
1 stop6h 39m
Deal found 8/17![Multiple Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:15 pm -
1 stop5h 34m
Tue 11/242:30 pm -
Nonstop2h 40m
Deal found 8/16![Delta logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/248:10 am -
Nonstop0h 50m
Wed 1/275:57 pm -
Nonstop2h 30m
Deal found 8/15![Alaska Airlines logo]()
$342
This United deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:00 am -
1 stop6h 57m
Fri 9/183:00 pm -
1 stop5h 59m
Deal found 8/16![Multiple Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:30 am -
1 stop8h 25m
Tue 9/87:35 pm -
Nonstop1h 40m
Deal found 8/17![Delta logo]()
$334
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:50 pm -
Nonstop1h 55m
Mon 10/261:40 pm -
1 stop4h 50m
Deal found 8/17![Delta logo]()
$343
Last-minute flights from Calgary to SeattleDiscover last-minute flight deals from Calgary to Seattle. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to Seattle. Data last updated August 19, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:50 pm -
Nonstop1h 55m
Sun 9/67:00 am -
Nonstop1h 50m
Deal found 8/18![WestJet logo]()
$267
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:50 pm -
Nonstop1h 55m
Sun 9/138:10 pm -
Nonstop1h 36m
Deal found 8/16![Multiple Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:45 am -
Nonstop1h 55m
Sat 9/127:35 pm -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$260
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:50 pm -
Nonstop1h 55m
Tue 9/228:10 pm -
Nonstop1h 36m
Deal found 8/18![Multiple Airlines logo]()
$266
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
1 stop8h 22m
Tue 9/225:00 am -
1 stop7h 53m
Deal found 8/18![United Airlines logo]()
$269
This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop5h 05m
Wed 9/2310:30 am -
Nonstop1h 40m
Deal found 8/14![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:50 pm -
Nonstop1h 55m
Sun 9/2710:30 am -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$262
This Vliegwinkel deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 05m
Sun 9/275:50 am -
1 stop6h 19m
Deal found 8/18![Air Canada logo]()
$265
This Cheapflightsfares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:50 pm -
Nonstop1h 55m
Sat 9/267:35 pm -
Nonstop1h 40m
Deal found 8/18![WestJet logo]()
$276
One-way flights from Calgary to SeattleSearch for one-way flight options from Calgary to Seattle. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from Calgary to Seattle. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Air Canada deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:05 pm -
1 stop4h 42m
Deal found 8/17![Air Canada logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:45 am -
Nonstop1h 55m
Deal found 8/18![WestJet logo]()
$155
This Air Canada deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:30 pm -
1 stop3h 27m
Deal found 8/16![Air Canada logo]()
$156
This Expedia deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:45 pm -
Nonstop1h 55m
Deal found 8/16![WestJet logo]()
$158
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
1 stop8h 22m
Deal found 8/18![United Airlines logo]()
$160
This SmartFares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am -
1 stop5h 05m
Deal found 8/18![Air Canada logo]()
$161
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:41 pm -
1 stop10h 45m
Deal found 8/18![United Airlines logo]()
$163
This Travelocity deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:25 pm -
Nonstop1h 55m
Deal found 8/14![WestJet logo]()
$164
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:45 am -
Nonstop1h 55m
Deal found 8/17![Delta logo]()
$165
This Air Canada deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:05 pm -
1 stop5h 27m
Deal found 8/14![Air Canada logo]()
$167
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:30 pm -
2 stops19h 46m
Deal found 8/16![United Airlines logo]()
$170
Find flight deals from Calgary to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Calgary (YYC) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $262 (Kiwi.com) |
One-way from | $153 (Air Canada) |
Popular in | August |
Cheapest in | November |
Average price | $353 |
Good round-trip deal | $350 or less |
Good one-way deal | $282 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Calgary to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2026.
Use the filters below to find and compare flights from Calgary to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sun 9/13
8:45 am-9:40 am
Nonstop1h 55m
Seattle/Tacoma Intl
Sun 9/20
8:10 pm-10:46 pm
Nonstop1h 36m
$277
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Thu 10/22
3:22 pm-1:15 am
1 stop10h 53m
Seattle/Tacoma Intl
Mon 10/26
8:35 pm-12:26 pm
1 stop14h 51m
$285
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sat 9/12
6:00 am-9:31 pm
1 stop16h 31m
Seattle/Tacoma Intl
Sat 9/19
5:00 am-1:53 pm
1 stop7h 53m
$293
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sat 9/26
5:50 pm-6:45 pm
Nonstop1h 55m
Seattle/Tacoma Intl
Mon 9/28
5:30 pm-10:55 pm
1 stop4h 25m
$302
Quickest round-trip
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Fri 1/22
8:10 am-7:00 am
Nonstop0h 50m
Seattle/Tacoma Intl
Wed 1/27
5:57 pm-10:27 pm
Nonstop2h 30m
$320
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Thu 10/15
3:22 pm-11:26 pm
1 stop9h 04m
Seattle/Tacoma Intl
Fri 10/16
10:30 am-6:09 pm
1 stop6h 39m
$320
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sun 9/13
6:00 am-11:57 am
1 stop6h 57m
Seattle/Tacoma Intl
Fri 9/18
3:00 pm-9:59 pm
1 stop5h 59m
$321
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sat 11/21
4:15 pm-7:49 pm
1 stop5h 34m
Seattle/Tacoma Intl
Tue 11/24
2:30 pm-7:10 pm
Nonstop2h 40m
$330
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Fri 9/4
9:30 am-4:55 pm
1 stop8h 25m
Seattle/Tacoma Intl
Tue 9/8
7:35 pm-10:15 pm
Nonstop1h 40m
$334
CalgarySeattle
YYC Calgary - SEA Seattle/Tacoma Intl
YYCSEA
Calgary
Sun 1/24
8:10 am-7:00 am
Nonstop0h 50m
Seattle/Tacoma Intl
Wed 1/27
5:57 pm-10:27 pm
Nonstop2h 30m
$342
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Calgary to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Calgary to Seattle in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Calgary-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Calgary-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Calgary-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Calgary-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Calgary-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Calgary to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Calgary with our price prediction graph.
YYC-SEA
Estimated round-trip 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.
Cheapflights Insights
Everything you need to know about your flight from Calgary to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from Calgary to Seattle?
The price you pay for your flight from Calgary to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Calgary to Seattle?
Currently, November is the cheapest month in which you can book a flight from Calgary to Seattle (average of $194). Flying from Calgary to Seattle in August is currently the most expensive (average of $353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YYC to SEA?
Find hourly flight availability from Calgary to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2026.
When flying from Calgary to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 75% versus a flight at noon.
What is the cheapest day to fly from Calgary to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Calgary to Seattle. Price data was last updated on August 15, 2026.
Travelers seeking maximum savings on their Calgary to Seattle flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Calgary to Seattle delayed?
About 16% of weekly flights between Calgary and Seattle have experienced delays in the past year, with the average delay time being 117 minutes.
What is the most punctual flight time for Calgary to Seattle flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Calgary to Seattle flights?
Over the last year, Alaska Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.
The best insider tips for Calgary to Seattle flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Calgary to Seattle trip
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Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 19, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andWestJet from Calgary to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Related info for your journey
Find useful and relevant information for your journey from Calgary to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Tukwila
Olympia
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Kent
Marysville
Ellensburg
Ocean Shores
Lakewood
Fife
Poulsbo
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Calgary and Seattle flights
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Top 4 airlines flying from Calgary to Seattle
Discover the top 4 airlines that operate flights from Calgary to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$297 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$149 | Average$307 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$182 | Average$398 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$343 | Average$487 | FlexibilityNo cancel fee | On-timeN/A |