Cheap flights from Calgary to Seattle from C$411 YYC → SEA
Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA)
The cheapest return found recently is C$411 (US$288) with Air Canada, 17 Dec – 21 Dec, found today.
- Cheapest return found recently
- C$411 (US$288), 17 Dec to 21 Dec
- Usual return price
- C$476 (US$334) to C$577 (US$405)
Return
The cheapest return fare on each of 3 departure dates is usually C$476 (US$334) to C$577 (US$405).
Cheapest return found recently
C$411 (US$288)
17 Dec – 21 Dec · Air Canada
Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA)
Leaves 4:55 p.m. · Return leaves 5:52 p.m. · 6 h 8 min of travel, both ways together
out 1 stop, back nonstop
found today
Cheapest nonstop return
C$560 (US$393)
17 Dec – 19 Dec · WestJet
Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA)
Leaves 2:45 p.m. · Return leaves 5:52 p.m. · 3 h 36 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
C$411 (US$288) 17 Dec – 21 Decfound todaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 37 days, 24 Sept to 12 Nov, the cheapest return we saw each day was C$298 (US$209) to C$754 (US$529).
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 16 Dec to 27 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 4-night return fares leaving within 3 days of 17 Dec to compare.
Every date we hold
6 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Dec – 22 Dec | C$542 (US$380) | Air Canada | Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back nonstop | found today | See prices for these dates |
| 17 Dec – 21 Dec | C$411 (US$288) | Air Canada | Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back nonstop | found today | See prices for these dates |
| 27 Dec – 8 Jan 2027 | C$612 (US$429) | WestJet | Calgary International Airport (YYC) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
Airlines on the cheapest dates: Air Canada, WestJet.
Premium cabin fares from Calgary to Seattle
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 17 Dec – 21 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Calgary to Seattle?
Return
Fares 14 to 29 days before departure were typically 39% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (37 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | C$754 (US$529) | C$754 (US$529) | +64% | 7 |
| 14–29 days | C$460 (US$323) | C$450 (US$316) | Cheapest seen | 13 |
| 30–59 days | C$560 (US$393) | C$298 (US$209) | +22% | 17 |
| 60–89 days | C$468 (US$328) | C$408 (US$286) | +2% | 15 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Calgary → Victoria
119 km from Seattle
C$182 (US$128)
C$228 (US$160) less than flying to Seattle
30 Apr 2027 – 2 May 2027 · YYC → YYJ · out nonstop, back nonstop
found today
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Calgary → Victoria
119 km from Seattle
C$160 (US$112)
12 Jun 2027 · YYC → YYJ · nonstop
found today
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 17 Dec – 21 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Calgary to Seattle?
The cheapest return found recently is C$411 (US$288) with Air Canada, 17 Dec to 21 Dec, found today. The cheapest return fare on each of 3 departure dates is usually C$476 (US$334) to C$577 (US$405).
How far ahead should I book a flight from Calgary to Seattle?
In 37 days of prices between 24 Sept and 12 Nov, return fares 14 to 29 days before departure were typically 39% lower than 7 to 13 days before departure.
Is there a direct flight from Calgary to Seattle?
Yes, the cheapest nonstop return found recently is C$560 (US$393) with WestJet, 17 Dec to 19 Dec, found yesterday.
Which airlines have the cheapest flights from Calgary to Seattle?
Between 16 Dec and 27 Dec, Air Canada has the cheapest return on 2 of the 3 departure dates we hold, and WestJet on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days: the price the seller showed on Aviasales; bags may cost extra. Canadian dollars at the Bank of Canada rate of 2026-11-12, US dollars in brackets. Fares change, so check today's price before you book. How our prices work