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Ontario Seattle - Cheap flights
Thu 08 JanONT - SEA · Direct
Sun 11 JanSEA - ONT · Direct
Wed 14 JanONT - SEA · Direct
Wed 28 JanSEA - ONT · Direct
Mon 22 DecONT - SEA · Direct
Fri 02 JanSEA - ONT · Direct
Tue 16 DecONT - SFO - SEA · 1 stop
Wed 17 DecSEA - SFO - ONT · 1 stop
Wed 17 DecONT - SFO - SEA · 1 stop
Wed 07 JanSEA - SFO - ONT · 1 stop
Fri 05 DecONT - SEA · Direct
Sun 07 DecSEA - ONT · Direct
Sat 13 DecONT - DEN - SEA · 1 stop
Wed 17 DecSEA - SFO - ONT · 1 stop
Why is it worth booking flights with eSky?
Find the best time to book cheap flights to Seattle
Flexible on travel dates? Discover the cheapest month to fly to Seattle
Cheapest round-trip flight
from 64 USDCheapest month to travel
JanuaryThe cheapest day to fly
SundayLowest prices
30 days before
When is the best time to buy flight tickets?
Find out how far in advance it's worth booking round-trip flights.6 months before
from
357 USD
3 months before
from
417 USD
30 days before
from
316 USD
7 days before
from
558 USD
1 day before
from
522 USD
Discover the cheapest day to fly
Discover on which day of the week flights are usually the most affordable.335 USD
335 USD
Mon364 USD
364 USD
Tue420 USD
420 USD
Wed399 USD
399 USD
Thu486 USD
486 USD
Fri513 USD
513 USD
Sat320 USD
320 USD
SunGeneral information
Local time (UTC-8)
Local currency
USD
Seattle
Seattle, the largest city in the state of Washington, is situated between Puget Sound and Lake Washington, about 175 km from the Canadian border. Home to about 684,451 people in 2015, it is known as the "Emerald City" and serves as an important seaport and air gateway for trade with Asia. Seattle attracts visitors with the Space Needle, Pike Place Market, and the Museum of Pop Culture. The climate is temperate, with mild winters and cool summers. The best time to visit is summer, when temperatures are pleasant.



