Seattle to Waterloo Flights (SEA-ITH) from $158

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Selected fares from Seattle to Waterloo

The cheapest prices found with in the last 7 days for return flights were $526 and $158 for one-way flights to Waterloo for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
United
United