Flight information for Ontario to Seattle
(ONT to SEA)
Find info about flight duration, direct flights, and airports for your flight from Ontario to Seattle
| Best Price Found | $83 | The best flight deal from Ontario to Seattle found on momondo in the last 72 hours is $83 |
| Fastest flight time | 2h 45m | The fastest flight from Ontario to Seattle takes 2h 45m |
| Direct flights | Fri | Direct flights go from Ontario to Seattle on Friday. The only airline offering direct flights is Alaska Airlines. |
| Airports in Seattle | 3 airports | There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA) |
How to get the cheapest flight ticket from Ontario to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from Ontario to Seattle?
January
The cheapest time of year to fly to Seattle from Ontario is January. Most expensive is November
What is the cheapest day to depart Ontario for Seattle?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly from Ontario to Seattle?
at noon
Ontario to Seattle flights are approximately 20% more expensive in the morning than at noon
What is the cheapest airline that flies to Seattle from Ontario?
Frontier
Alaska Airlines, Delta, and Frontier are the most popular carriers operating from Ontario to Seattle
What is the cheapest Ontario to Seattle flight route?
Ontario - Seattle/Tacoma Intl
Fly from Ontario to Seattle/Tacoma Intl for the best Ontario - Seattle flight prices
How far in advance should you book Ontario to Seattle flights?
50 days before
The cheapest time to buy a flight from Ontario to Seattle is approximately 50 days to departure
Easily compare round-trip flights from Ontario to Seattle
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to Seattle by changing tabs
Find the cheapest one-way flights from Ontario to Seattle
If you're looking for one-way flights from Ontario to Seattle, view some of our deals below provided by Alaska Airlines, Delta and Frontier
Search last-minute flights to Seattle from Ontario
Find and compare flight prices for your last-minute flight from Ontario to Seattle
Best airlines flying from Ontario to Seattle
Compare and see reviews for airlines that fly from Ontario to Seattle with momondo
Reviews
Outdated media
Reviews
Pros: Everything! From ticketing agent to all the crew on our flight back were awesome. Thank you!
Reviews
Great
Reviews
Flight attendant for first class is definitely not a morning person. Oh and the WiFi DID NOT WORK!
Reviews
Great service
Reviews
They cancel our flight for next day, refund $25 until September 28 (ridiculous) and for the terrible time that I pass and lost money on Friday because I suppose to work
Reviews
Flight delay for 5 hrs agent not helpful. Make me late for other plans. Very disappointed.
Are airlines flying from Ontario to Seattle/Tacoma Intl offering flexible cancellation due to COVID-19?
To ease the stress of booking flights, some of our airline partners flying from Ontario to Seattle/Tacoma Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: Alaska Airlines, United Airlines, and Delta.
How far is Ontario to Seattle/Tacoma Intl by plane?
The straight-line distance from Ontario to Seattle/Tacoma Intl is 966.6 mi. By plane, this route typically takes 2h 43m.
Can I fly to Seattle/Tacoma Intl from Ontario right now?
Most visitors from Ontario need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.
COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.
Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Seattle/Tacoma Intl.
Can I fly back to Ontario from Seattle/Tacoma Intl?
COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.
Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Ontario.