$438 Find cheap flights from Waterloo to Seattle

In the last 3 days, the lowest price for a flight from Waterloo to Seattle was $438 for a one-way ticket and $595 for a round-trip.

No, a passport isn't needed to fly from Waterloo to Seattle. However, local authorities might ask for an official ID.

Waterloo and Seattle are both served by 1 main airport. You will leave Waterloo from Waterloo and will be arriving at Seattle/Tacoma Intl.

We unfortunately don’t have that data for this specific route.

oneworld is the only airline alliance operating flights between Waterloo and Seattle.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Waterloo to Seattle.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Waterloo is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Waterloo with another airline. Booking your flights between Waterloo and SEA can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Waterloo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.