Cheap flights from Washington (WA) to Ontario (ONT)

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How to find the cheapest flight from
Washington to Ontario (ONT)

All the information you need to plan the best null to ONT flight in 2021: compare Washington to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
How far in advance should I book a flight from Washington to Ontario?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 17 days in advance, which can save you up to 20% on flights from Washington to Ontario compared to booking the week you need them. Waiting 17 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $75. For sooner than that we have options available in the next 3 days from $95.

What is the cheapest month to fly from Washington to Ontario?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Ontario. Flights to Ontario from Washington in April are about $86 on average during April, but can be found for as low as $43.

Cheap flights from Washington to Ontario in July, August 2021

The best prices found for Washington to ONT flights for July, August
27 Aug - 30 Aug
$116pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
17 Aug - 14 Sep
$129pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
18 Aug - 18 Aug
$132pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Washington to Ontario 2021 flight deals

Cheap flights to Ontario from Washington found for this year
28 Oct - 1 Nov
$113pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
2 Sep - 9 Sep
$115pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
27 Aug - 30 Aug
$116pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Non-stop flights to Ontario from Washington

Save time with Washington to Ontario direct flight deals
28 Oct - 1 Nov
$113pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
2 Sep - 9 Sep
$115pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
27 Aug - 30 Aug
$116pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Washington to Ontario

Late deals on round-trip flights to Ontario from Washington, departing today and this week
5 Aug - 17 Aug
$159pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
7 Aug - 23 Aug
$171pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
7 Aug - 22 Aug
$172pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Ontario from Washington

The cheapest one-way flights from Washington to Ontario
1:35 am - 8:25 am
Delta
1 Stop
6h 50m
SEA - ONT
Delta
$78
Delta
4:44 pm - 8:57 am
Frontier
1 Stop
16h 13m
GEG - ONT
Frontier
$83
Kiwi.com
3:20 am - 5:47 am
Alaska Airlines
Nonstop
2h 27m
SEA - ONT
Alaska Airlines
$85
SmartFares

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Washington</span> to <span class="emphasized">Ontario</span> flights.

Flight FAQs

From Washington to Ontario

Are flight prices decreasing from Washington to Ontario due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Washington and Ontario for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Washington to Ontario have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Alaska Airlines, Delta, and United Airlines flying from Washington to Ontario have implemented new flexible cancellation policies.

What airport do you fly into for flights to Ontario from Washington?

Most people fly into Ontario (ONT) if they book a flight to Ontario from Washington. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

Can I find flights from Washington to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Washington to Ontario for under $200. The cheapest flight booked recently is on Alaska Airlines for just $113, but on average you can expect to pay $137.

Are there nonstop flights from Washington to Ontario for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington to Ontario under $200. A good price for a nonstop flight from Washington to Ontario is less than $145.

Are there last-minute flights available from Washington to Ontario for under $200?

There are currently 20+ open flights from Washington to Ontario within the next 7 days for less than $200.

What days are nonstop flights available from Washington to Ontario?

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

How popular is this flight route?

This flight path from Washington to Ontario was viewed by 1,087 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the most popular airlines that fly from Washington to Ontario?

When booking a flight from Washington to Ontario, you may want to consider flying on Major Airline, American Airlines or Alaska Airlines as they are the most popular for this route.

What are the most popular routes from Washington to Ontario?

When deciding which route to take from Washington to Ontario consider Seattle/Tacoma Intl - Ontario, Spokane - Ontario or Bellingham - Ontario as they are the most popular.

What are the cheapest Flights from Washington to Ontario?

The cheapest flight price from Washington to Ontario is $79. On average you can expect to pay $454. The most popular route, (Seattle/Tacoma Intl - Ontario), can usually be booked for $133.

What are the most reliable airlines from Washington to Ontario?

Consider Virgin Atlantic (96%), KLM (92%) or Qatar Airways (89%) when booking your flight. These represent the most reliable airlines when flying from Washington to Ontario.

How long is the flight from Washington to Ontario?

A quick flight from Washington to Ontario can take about 2h 27m. Alaska Airlines provides one of the quickest options available for as low as $115. This flight may include one or multiple stops.

What are the cheapest airlines flying from Washington to Ontario round-trip?

Currently priced at $113, Alaska Airlines will fly you from Washington to Ontario and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $132 and $146, respectively.

What are the cheapest airlines to fly from Washington to Ontario one-way?

One-way options have recently been found by users for as low as $42 on Alaska Airlines. Other airlines that offer cheap prices include Frontier from $63 and Delta from $78 one-way.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

Do I need a COVID test to fly to Ontario from Washington?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Washington need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Washington must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from Washington are not required to quarantine after entering Ontario.

Do I need a test to fly back to Washington from Ontario?

Returning to Washington from Ontario

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 Washington.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Washington.

Hide COVID Travel Restrictions for Ontario, CA

Departure points for flights from Washington to Ontario

Select to see more specific information for flights to Ontario from all departure points in Washington.

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from Washington to Ontario.
Flight duration
2h 37m

Airports servicing

Seattle King County/Boeing (BFI)
Bellingham (BLI)
Deer Harbor (DHB)
Wenatchee (EAT)
Eastsound Orcas Island (ESD)
Friday Harbor SPB (FBS)

Airports servicing Ontario

Top 8 airlines flying from Washington to Ontario

The chart below displays the airlines Cheapflights users traveling from Washington to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$91 $162 No cancel fee 65%
JetBlue
$95 $208 No cancel fee 62%
Frontier
$106 $220 No cancel fee 62%
Delta
$87 $241 No cancel fee N/A
United Airlines
$77 $264 No cancel fee 69%
American Airlines
$97 $315 No cancel fee 71%
Alaska Airlines
$88 $316 No cancel fee 75%
Southwest
$258 $360 No cancel fee 63%
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