AirHint found the following cheapest one-way flights from Waterloo (YKF) to Seattle (SEA) in June 2026 (see full year).
One-Way flights
| 07 Jun | WestJet | ||
| 08 Jun | WestJet | ||
| 10 Jun | WestJet | ||
| 09 Jun | WestJet | ||
| 30 Jun | WestJet | ||
| 16 Jun | WestJet | ||
| 12 Jun | WestJet | ||
| 14 Jun | WestJet | ||
| 23 Jun | WestJet | ||
| 22 Jun | WestJet |
Also check the deals for return flights from Waterloo to Seattle in June.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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