$100+ Cheap flights from Ontario to Washington
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ontario to Washington with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Washington
Keep the following information in mind while searching for Ontario to Washington flight deals. Data was last updated abril 17, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $154 (Trip.com) |
One-way from | $100 (Justfly.com) |
Popular in | July |
Cheapest in | February |
Average price | $396 |
Good round-trip deal | $336 or less |
Good one-way deal | $176 or less |
Find flight deals from Ontario to Washington
Cheapest flights from Ontario to WashingtonExplore the most affordable flight options available from Ontario to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.
Explore the most affordable flight options available from Ontario to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Justfly.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This lastminute.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 17, 2025.
Use the filters below to find and compare flights from Ontario to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
HamiltonPortland
YHM - PDX
YHMPDX
Hamilton
mar. 7/15
6:00 am-12:52 pm
1 stop9h 52m
Portland
dom. 7/20
1:45 pm-12:41 am
1 stop7h 56m
HamiltonSeattle
YHM - SEA
YHMSEA
Hamilton
sáb. 5/3
6:00 am-12:58 pm
1 stop9h 58m
Seattle/Tacoma Intl
mié. 5/7
1:50 pm-12:41 am
1 stop7h 51m
HamiltonSeattle
YHM - SEA
YHMSEA
Hamilton
sáb. 5/3
6:00 am-12:58 pm
1 stop9h 58m
Seattle/Tacoma Intl
mar. 5/13
6:00 am-12:41 am
2 stops15h 41m
TorontoPortland
YYZ - PDX
YYZPDX
Toronto Pearson Intl
vie. 7/11
6:30 am-12:52 pm
1 stop9h 22m
Portland
lun. 7/14
1:45 pm-6:12 am
1 stop13h 27m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
dom. 7/27
6:30 am-12:58 pm
1 stop9h 28m
Seattle/Tacoma Intl
lun. 8/4
2:05 pm-12:24 am
1 stop7h 19m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
mié. 5/28
8:00 am-12:58 pm
1 stop7h 58m
Seattle/Tacoma Intl
mié. 6/4
6:00 am-10:54 pm
2 stops13h 54m
TorontoSeattle
YKF - SEA
YKFSEA
Toronto Region of Waterloo Intl
sáb. 7/12
6:00 am-12:31 pm
2 stops33h 31m
Seattle/Tacoma Intl
dom. 7/20
7:05 am-12:46 am
1 stop14h 41m
TorontoSeattle
YKF - SEA
YKFSEA
Toronto Region of Waterloo Intl
mié. 5/7
6:00 am-2:25 pm
3 stops35h 25m
Seattle/Tacoma Intl
lun. 5/12
3:20 pm-12:46 am
2 stops30h 26m
MontrealPortland
YUL - PDX
YULPDX
Montreal Pierre Elliott Trudeau Intl
lun. 5/26
7:00 am-12:52 pm
1 stop8h 52m
Portland
dom. 6/1
1:45 pm-12:43 am
1 stop7h 58m
OttawaSeattle
YOW - SEA
YOWSEA
Ottawa
sáb. 5/31
6:10 am-12:58 pm
2 stops9h 48m
Seattle/Tacoma Intl
sáb. 6/7
7:05 am-6:21 pm
1 stop8h 16m
Best time to book a flight from Ontario to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Washington
What is the cheapest month to book a flight from Region of Ontario to State of Washington?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to State of Washington (average of $238). Flying from Region of Ontario to State of Washington in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ON to WA?
Find hourly flight availability from Ontario to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 17, 2025.
When flying from Region of Ontario to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Region of Ontario to State of Washington
Explore weekly flight availability from Ontario to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 17, 2025.
The most flights from CAON to USWA are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Washington by month
Plan your trip to Washington by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.
Temperature in Washington by month
Plan your trip to Washington by taking into account the average temperature totals by month.
If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated abril 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Ontario to Washington. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Boarding
Comfort
Crew
Entertainment
Food
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Related info for your journey
Find useful and relevant information for your journey from Ontario to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Ontario to Washington
Discover the top 6 airlines that operate flights from Ontario to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$122 | Average$450 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$141 | Average$375 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$239 | Average$412 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$240 | Average$442 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$292 | Average$421 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$393 | Average$653 | FlexibilityNo cancel fee | On-time71% |